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yulichang 2021-02-01 01:23:30 +08:00
parent fb89f5d84c
commit 99890d94dd
33 changed files with 1490 additions and 1861 deletions
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2
README.md
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@ -191,7 +191,7 @@ ORDER BY addr.id DESC
## MyLambdaQueryWrapper用法
### MyLambdaQueryWrapper更符合面向对象(OOP),没有难以理解的常量(魔术值),全部基于lambda,但好像不那么好理解
### MyLambdaQueryWrapper更符合面向对象(OOP),没有难以理解的常量(魔术值),全部基于lambda,但灵活性不如上面的
#### 简单的3表查询

37
src/main/java/com/github/mybatisplus/base/MyBaseMapper.java
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@ -1,10 +1,10 @@
package com.github.mybatisplus.base;
import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Constants;
import com.github.mybatisplus.toolkit.Constant;
import com.github.mybatisplus.wrapper.MyWrapper;
import org.apache.ibatis.annotations.Param;
import java.util.List;
@ -19,48 +19,51 @@ public interface MyBaseMapper<T> extends BaseMapper<T> {
/**
* 连表查询返回一条记录
*
* @param queryWrapper joinWrapper
* @param clazz resultType
* @param myWrapper joinWrapper
* @param clazz resultType
*/
<DTO> DTO selectJoinOne(@Param(Constant.CLAZZ) Class<DTO> clazz, @Param(Constants.WRAPPER) Wrapper<?> queryWrapper);
<DTO> DTO selectJoinOne(@Param(Constant.CLAZZ) Class<DTO> clazz,
@Param(Constants.WRAPPER) MyWrapper<?> myWrapper);
/**
* 连表查询返回Map
*
* @param queryWrapper joinWrapper
* @param myWrapper joinWrapper
*/
Map<String, Object> selectJoinMap(@Param(Constants.WRAPPER) Wrapper<?> queryWrapper);
Map<String, Object> selectJoinMap(@Param(Constants.WRAPPER) MyWrapper<?> myWrapper);
/**
* 连表查询返回记录集合
*
* @param queryWrapper joinWrapper
* @param clazz resultType
* @param myWrapper joinWrapper
* @param clazz resultType
*/
<DTO> List<DTO> selectJoinList(@Param(Constant.CLAZZ) Class<DTO> clazz, @Param(Constants.WRAPPER) Wrapper<?> queryWrapper);
<DTO> List<DTO> selectJoinList(@Param(Constant.CLAZZ) Class<DTO> clazz,
@Param(Constants.WRAPPER) MyWrapper<?> myWrapper);
/**
* 连表查询返回Map集合
*
* @param queryWrapper joinWrapper
* @param myWrapper joinWrapper
*/
List<Map<String, Object>> selectJoinMaps(@Param(Constants.WRAPPER) Wrapper<?> queryWrapper);
List<Map<String, Object>> selectJoinMaps(@Param(Constants.WRAPPER) MyWrapper<?> myWrapper);
/**
* 连表查询返回记录集合并分页
*
* @param queryWrapper joinWrapper
* @param clazz resultType
* @param <DTO> 分页返回对象
* @param myWrapper joinWrapper
* @param clazz resultType
* @param <DTO> 分页返回对象
*/
<DTO, P extends IPage<?>> IPage<DTO> selectJoinPage(P page,
@Param(Constant.CLAZZ) Class<DTO> clazz,
@Param(Constants.WRAPPER) Wrapper<?> queryWrapper);
@Param(Constants.WRAPPER) MyWrapper<?> myWrapper);
/**
* 连表查询返回Map集合并分页
*
* @param queryWrapper joinWrapper
* @param myWrapper joinWrapper
*/
<P extends IPage<?>> IPage<Map<String, Object>> selectJoinMapsPage(P page, @Param(Constants.WRAPPER) Wrapper<?> queryWrapper);
<P extends IPage<?>> IPage<Map<String, Object>> selectJoinMapsPage(P page,
@Param(Constants.WRAPPER) MyWrapper<?> myWrapper);
}

59
src/main/java/com/github/mybatisplus/base/MyBaseService.java
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@ -2,8 +2,7 @@ package com.github.mybatisplus.base;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.IService;
import com.github.mybatisplus.func.MyWrapperFunc;
import com.github.mybatisplus.wrapper.MyLambdaQueryWrapper;
import com.github.mybatisplus.wrapper.MyWrapper;
import java.util.List;
import java.util.Map;
@ -14,78 +13,34 @@ import java.util.Map;
*/
public interface MyBaseService<T> extends IService<T> {
/**
* ignore
*/
default <DTO> DTO selectJoinOne(Class<DTO> clazz, MyWrapperFunc<T> wrapperFunc) {
return selectJoinOne(clazz, wrapperFunc.apply(new MyLambdaQueryWrapper<>()));
}
/**
* 连接查询返回一条记录
*/
<DTO> DTO selectJoinOne(Class<DTO> clazz, MyLambdaQueryWrapper<T> wrapper);
/**
* ignore
*/
default <DTO> List<DTO> selectJoinList(Class<DTO> clazz, MyWrapperFunc<T> wrapperFunc) {
return selectJoinList(clazz, wrapperFunc.apply(new MyLambdaQueryWrapper<>()));
}
<DTO> DTO selectJoinOne(Class<DTO> clazz, MyWrapper<T> wrapper);
/**
* 连接查询返回集合
*/
<DTO> List<DTO> selectJoinList(Class<DTO> clazz, MyLambdaQueryWrapper<T> wrapper);
/**
* ignore
*/
default <DTO, P extends IPage<?>> IPage<DTO> selectJoinListPage(P page, Class<DTO> clazz, MyWrapperFunc<T> wrapperFunc) {
return selectJoinListPage(page, clazz, wrapperFunc.apply(new MyLambdaQueryWrapper<>()));
}
<DTO> List<DTO> selectJoinList(Class<DTO> clazz, MyWrapper<T> wrapper);
/**
* 连接查询返回集合并分页
*/
<DTO, P extends IPage<?>> IPage<DTO> selectJoinListPage(P page, Class<DTO> clazz, MyLambdaQueryWrapper<T> wrapper);
/**
* ignore
*/
default Map<String, Object> selectJoinMap(MyWrapperFunc<T> wrapperFunc) {
return selectJoinMap(wrapperFunc.apply(new MyLambdaQueryWrapper<>()));
}
<DTO, P extends IPage<?>> IPage<DTO> selectJoinListPage(P page, Class<DTO> clazz, MyWrapper<T> wrapper);
/**
* 连接查询返回Map
*/
Map<String, Object> selectJoinMap(MyLambdaQueryWrapper<T> wrapper);
/**
* ignore
*/
default List<Map<String, Object>> selectJoinMaps(MyWrapperFunc<T> wrapperFunc) {
return selectJoinMaps(wrapperFunc.apply(new MyLambdaQueryWrapper<>()));
}
Map<String, Object> selectJoinMap(MyWrapper<T> wrapper);
/**
* 连接查询返回Map集合
*/
List<Map<String, Object>> selectJoinMaps(MyLambdaQueryWrapper<T> wrapper);
List<Map<String, Object>> selectJoinMaps(MyWrapper<T> wrapper);
/**
* ignore
*/
default IPage<Map<String, Object>> selectJoinMapsPage(IPage<Map<String, Object>> page, MyWrapperFunc<T> wrapperFunc) {
return selectJoinMapsPage(page, wrapperFunc.apply(new MyLambdaQueryWrapper<>()));
}
/**
* 连接查询返回Map集合并分页
*/
IPage<Map<String, Object>> selectJoinMapsPage(IPage<Map<String, Object>> page, MyLambdaQueryWrapper<T> wrapper);
IPage<Map<String, Object>> selectJoinMapsPage(IPage<Map<String, Object>> page, MyWrapper<T> wrapper);
}

13
src/main/java/com/github/mybatisplus/base/MyBaseServiceImpl.java
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@ -3,6 +3,7 @@ package com.github.mybatisplus.base;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.github.mybatisplus.wrapper.MyLambdaQueryWrapper;
import com.github.mybatisplus.wrapper.MyWrapper;
import java.util.List;
import java.util.Map;
@ -15,33 +16,33 @@ public class MyBaseServiceImpl<M extends MyBaseMapper<T>, T> extends ServiceImpl
@Override
public <DTO> DTO selectJoinOne(Class<DTO> clazz, MyLambdaQueryWrapper<T> wrapper) {
public <DTO> DTO selectJoinOne(Class<DTO> clazz, MyWrapper<T> wrapper) {
return baseMapper.selectJoinOne(clazz, wrapper);
}
@Override
public <DTO> List<DTO> selectJoinList(Class<DTO> clazz, MyLambdaQueryWrapper<T> wrapper) {
public <DTO> List<DTO> selectJoinList(Class<DTO> clazz, MyWrapper<T> wrapper) {
return baseMapper.selectJoinList(clazz, wrapper);
}
@Override
public <DTO, P extends IPage<?>> IPage<DTO> selectJoinListPage(P page, Class<DTO> clazz, MyLambdaQueryWrapper<T> wrapper) {
public <DTO, P extends IPage<?>> IPage<DTO> selectJoinListPage(P page, Class<DTO> clazz, MyWrapper<T> wrapper) {
return baseMapper.selectJoinPage(page, clazz, wrapper);
}
@Override
public Map<String, Object> selectJoinMap(MyLambdaQueryWrapper<T> wrapper) {
public Map<String, Object> selectJoinMap(MyWrapper<T> wrapper) {
return baseMapper.selectJoinMap(wrapper);
}
@Override
public List<Map<String, Object>> selectJoinMaps(MyLambdaQueryWrapper<T> wrapper) {
public List<Map<String, Object>> selectJoinMaps(MyWrapper<T> wrapper) {
return baseMapper.selectJoinMaps(wrapper);
}
@Override
public IPage<Map<String, Object>> selectJoinMapsPage(IPage<Map<String, Object>> page, MyLambdaQueryWrapper<T> wrapper) {
public IPage<Map<String, Object>> selectJoinMapsPage(IPage<Map<String, Object>> page, MyWrapper<T> wrapper) {
return baseMapper.selectJoinMapsPage(page, wrapper);
}

15
src/main/java/com/github/mybatisplus/func/MySFunction.java
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@ -1,15 +0,0 @@
package com.github.mybatisplus.func;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
/**
* 支持别名的 SFunction
*
* @author yulichang
* @see SFunction
*/
@FunctionalInterface
public interface MySFunction<T, R> extends SFunction<T, R> {
}

12
src/main/java/com/github/mybatisplus/func/MyWrapperFunc.java
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@ -1,12 +0,0 @@
package com.github.mybatisplus.func;
import com.github.mybatisplus.wrapper.MyLambdaQueryWrapper;
/**
* @author yulichang
*/
@FunctionalInterface
public interface MyWrapperFunc<T> {
MyLambdaQueryWrapper<T> apply(MyLambdaQueryWrapper<T> wrapper);
}

2
src/main/java/com/github/mybatisplus/method/SelectJoinList.java
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@ -16,7 +16,7 @@ public class SelectJoinList extends MyAbstractMethod {
public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
SqlMethod sqlMethod = SqlMethod.SELECT_JOIN_LIST;
String sql = String.format(sqlMethod.getSql(), sqlSelectColumns(tableInfo, true),
tableInfo.getTableName(), Constant.TABLE_ALIAS, sqlWhereEntityWrapper(true, tableInfo), sqlComment());
tableInfo.getTableName(), sqlWhereEntityWrapper(true, tableInfo), sqlComment());
SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
return this.addSelectMappedStatementForOther(mapperClass, sqlMethod.getMethod(), sqlSource, Map.class);
}

3
src/main/java/com/github/mybatisplus/method/SelectJoinMap.java
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@ -1,7 +1,6 @@
package com.github.mybatisplus.method;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import com.github.mybatisplus.toolkit.Constant;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlSource;
@ -16,7 +15,7 @@ public class SelectJoinMap extends MyAbstractMethod {
public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
SqlMethod sqlMethod = SqlMethod.SELECT_JOIN_MAP;
String sql = String.format(sqlMethod.getSql(), sqlSelectColumns(tableInfo, true),
tableInfo.getTableName(), Constant.TABLE_ALIAS, sqlWhereEntityWrapper(true, tableInfo), sqlComment());
tableInfo.getTableName(), sqlWhereEntityWrapper(true, tableInfo), sqlComment());
SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
return this.addSelectMappedStatementForOther(mapperClass, sqlMethod.getMethod(), sqlSource, Map.class);
}

2
src/main/java/com/github/mybatisplus/method/SelectJoinMaps.java
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@ -16,7 +16,7 @@ public class SelectJoinMaps extends MyAbstractMethod {
public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
SqlMethod sqlMethod = SqlMethod.SELECT_JOIN_MAPS;
String sql = String.format(sqlMethod.getSql(), sqlSelectColumns(tableInfo, true),
tableInfo.getTableName(), Constant.TABLE_ALIAS, sqlWhereEntityWrapper(true, tableInfo), sqlComment());
tableInfo.getTableName(), sqlWhereEntityWrapper(true, tableInfo), sqlComment());
SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
return this.addSelectMappedStatementForOther(mapperClass, sqlMethod.getMethod(), sqlSource, Map.class);
}

2
src/main/java/com/github/mybatisplus/method/SelectJoinMapsPage.java
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@ -16,7 +16,7 @@ public class SelectJoinMapsPage extends MyAbstractMethod {
public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
SqlMethod sqlMethod = SqlMethod.SELECT_JOIN_MAPS_PAGE;
String sql = String.format(sqlMethod.getSql(), sqlSelectColumns(tableInfo, true),
tableInfo.getTableName(), Constant.TABLE_ALIAS, sqlWhereEntityWrapper(true, tableInfo), sqlComment());
tableInfo.getTableName(), sqlWhereEntityWrapper(true, tableInfo), sqlComment());
SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
return this.addSelectMappedStatementForOther(mapperClass, sqlMethod.getMethod(), sqlSource, Map.class);
}

2
src/main/java/com/github/mybatisplus/method/SelectJoinOne.java
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@ -16,7 +16,7 @@ public class SelectJoinOne extends MyAbstractMethod {
public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
SqlMethod sqlMethod = SqlMethod.SELECT_JOIN_ONE;
String sql = String.format(sqlMethod.getSql(), sqlSelectColumns(tableInfo, true),
tableInfo.getTableName(), Constant.TABLE_ALIAS, sqlWhereEntityWrapper(true, tableInfo), sqlComment());
tableInfo.getTableName(), sqlWhereEntityWrapper(true, tableInfo), sqlComment());
SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
return this.addSelectMappedStatementForOther(mapperClass, sqlMethod.getMethod(), sqlSource, Map.class);
}

2
src/main/java/com/github/mybatisplus/method/SelectJoinPage.java
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@ -16,7 +16,7 @@ public class SelectJoinPage extends MyAbstractMethod {
public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
SqlMethod sqlMethod = SqlMethod.SELECT_JOIN_PAGE;
String sql = String.format(sqlMethod.getSql(), sqlSelectColumns(tableInfo, true),
tableInfo.getTableName(), Constant.TABLE_ALIAS, sqlWhereEntityWrapper(true, tableInfo), sqlComment());
tableInfo.getTableName(), sqlWhereEntityWrapper(true, tableInfo), sqlComment());
SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
return this.addSelectMappedStatementForOther(mapperClass, sqlMethod.getMethod(), sqlSource, Map.class);
}

12
src/main/java/com/github/mybatisplus/method/SqlMethod.java
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@ -15,22 +15,22 @@ public enum SqlMethod {
* 连表查询
*/
SELECT_JOIN_ONE("selectJoinOne", "返回一条记录",
"<script>\nSELECT %s FROM %s %s <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
"<script>\nSELECT %s FROM %s <if test=\"ew.alias != null and ew.alias != ''\">${ew.alias}</if> <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
SELECT_JOIN_LIST("selectJoinList", "返回List集合",
"<script>\nSELECT %s FROM %s %s <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
"<script>\nSELECT %s FROM %s <if test=\"ew.alias != null and ew.alias != ''\">${ew.alias}</if> <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
SELECT_JOIN_MAP("selectJoinMap", "返回一个Map",
"<script>\nSELECT %s FROM %s %s <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
"<script>\nSELECT %s FROM %s <if test=\"ew.alias != null and ew.alias != ''\">${ew.alias}</if> <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
SELECT_JOIN_MAPS("selectJoinMaps", "返回Map集合",
"<script>\nSELECT %s FROM %s %s <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
"<script>\nSELECT %s FROM %s <if test=\"ew.alias != null and ew.alias != ''\">${ew.alias}</if> <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
SELECT_JOIN_PAGE("selectJoinPage", "连表查询并分页",
"<script>\nSELECT %s FROM %s %s <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
"<script>\nSELECT %s FROM %s <if test=\"ew.alias != null and ew.alias != ''\">${ew.alias}</if> <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>"),
SELECT_JOIN_MAPS_PAGE("selectJoinMapsPage", "返回Map集合并分页",
"<script>\nSELECT %s FROM %s %s <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>");
"<script>\nSELECT %s FROM %s <if test=\"ew.from != null and ew.from != ''\">${ew.from}</if> %s %s\n</script>");
private final String method;
private final String desc;

2
src/main/java/com/github/mybatisplus/query/MyAbstractLambda.java
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@ -32,7 +32,7 @@ public abstract class MyAbstractLambda<T, Children extends MyAbstractLambda<T, C
@SuppressWarnings("unchecked")
protected String columnsToString(boolean onlyColumn, SFunction<T, ?>... columns) {
return Arrays.stream(columns).map(i -> Constant.TABLE_ALIAS + StringPool.DOT + columnToString(i, onlyColumn)).collect(joining(StringPool.COMMA));
return Arrays.stream(columns).map(i -> columnToString(i, onlyColumn)).collect(joining(StringPool.COMMA));
}
@Override

30
src/main/java/com/github/mybatisplus/query/MyAbstractWrapper.java
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@ -16,6 +16,7 @@ import com.baomidou.mybatisplus.core.toolkit.sql.SqlUtils;
import com.baomidou.mybatisplus.core.toolkit.sql.StringEscape;
import com.github.mybatisplus.query.interfaces.MyJoin;
import com.github.mybatisplus.toolkit.Constant;
import com.github.mybatisplus.wrapper.MyWrapper;
import java.util.Arrays;
import java.util.Collection;
@ -33,8 +34,8 @@ import static java.util.stream.Collectors.joining;
* copy {@link com.baomidou.mybatisplus.core.conditions.AbstractWrapper}
*/
@SuppressWarnings({"serial", "unchecked"})
public abstract class MyAbstractWrapper<T, R, Children extends MyAbstractWrapper<T, R, Children>> extends Wrapper<T>
implements Compare<Children, R>, Nested<Children, Children>, Join<Children>, Func<Children, R>, MyJoin<Children> {
public abstract class MyAbstractWrapper<T, R, Children extends MyAbstractWrapper<T, R, Children>> extends MyWrapper<T>
implements Compare<Children, R>, Nested<Children, Children>, Join<Children>, Func<Children, R> {
/**
* 占位符
@ -94,31 +95,6 @@ public abstract class MyAbstractWrapper<T, R, Children extends MyAbstractWrapper
return typedThis;
}
@Override
public Children leftJoin(boolean condition, String joinSql) {
if (condition) {
from.setStringValue(from.getStringValue() + Constant.LEFT_JOIN + joinSql);
}
return typedThis;
}
@Override
public Children rightJoin(boolean condition, String joinSql) {
if (condition) {
from.setStringValue(from.getStringValue() + Constant.RIGHT_JOIN + joinSql);
}
return typedThis;
}
@Override
public Children innerJoin(boolean condition, String joinSql) {
if (condition) {
from.setStringValue(from.getStringValue() + Constant.INNER_JOIN + joinSql);
}
return typedThis;
}
@Override
public <V> Children allEq(boolean condition, Map<R, V> params, boolean null2IsNull) {
if (condition && CollectionUtils.isNotEmpty(params)) {

22
src/main/java/com/github/mybatisplus/query/MyLambdaQuery.java
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@ -11,6 +11,7 @@ import com.baomidou.mybatisplus.core.toolkit.Assert;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.github.mybatisplus.query.interfaces.MyJoin;
import com.github.mybatisplus.toolkit.Constant;
import java.util.ArrayList;
@ -28,13 +29,18 @@ import java.util.stream.Collectors;
*/
@SuppressWarnings("serial")
public class MyLambdaQuery<T> extends MyAbstractLambda<T, MyLambdaQuery<T>>
implements Query<MyLambdaQuery<T>, T, SFunction<T, ?>> {
implements Query<MyLambdaQuery<T>, T, SFunction<T, ?>>, MyJoin<MyLambdaQuery<T>> {
/**
* 查询字段
*/
private SharedString sqlSelect = new SharedString();
/**
* 主表别名
*/
private SharedString alias = new SharedString(Constant.TABLE_ALIAS);
/**
* 不建议直接 new 该实例，使用 Wrappers.lambdaQuery(entity)
@ -170,6 +176,11 @@ public class MyLambdaQuery<T> extends MyAbstractLambda<T, MyLambdaQuery<T>>
return from.getStringValue();
}
public String getAlias() {
return alias.getStringValue();
}
/**
* 用于生成嵌套 sql
* <p>故 sqlSelect from不向下传递</p>
@ -185,4 +196,13 @@ public class MyLambdaQuery<T> extends MyAbstractLambda<T, MyLambdaQuery<T>>
super.clear();
sqlSelect.toNull();
}
@Override
public MyLambdaQuery<T> join(String keyWord, boolean condition, String joinSql) {
if (condition) {
from.setStringValue(from.getStringValue() + keyWord + joinSql);
}
return typedThis;
}
}

10
src/main/java/com/github/mybatisplus/query/MyQuery.java
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@ -7,6 +7,7 @@ import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
import com.baomidou.mybatisplus.core.toolkit.ArrayUtils;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.github.mybatisplus.toolkit.Constant;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
@ -24,6 +25,11 @@ public class MyQuery<T> extends MyAbstractWrapper<T, String, MyQuery<T>>
*/
private SharedString sqlSelect = new SharedString();
/**
* 主表别名
*/
private SharedString alias = new SharedString(Constant.TABLE_ALIAS);
public MyQuery() {
this(null);
}
@ -84,6 +90,10 @@ public class MyQuery<T> extends MyAbstractWrapper<T, String, MyQuery<T>>
return from.getStringValue();
}
public String getAlias() {
return alias.getStringValue();
}
/**
* 返回一个支持 lambda 函数写法的 wrapper
*/

16
src/main/java/com/github/mybatisplus/query/interfaces/MyJoin.java
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@ -1,22 +1,32 @@
package com.github.mybatisplus.query.interfaces;
import com.github.mybatisplus.toolkit.Constant;
public interface MyJoin<Children> {
default Children leftJoin(String joinSql) {
return leftJoin(true, joinSql);
}
Children leftJoin(boolean condition, String joinSql);
default Children leftJoin(boolean condition, String joinSql) {
return join(Constant.LEFT_JOIN, condition, joinSql);
}
default Children rightJoin(String joinSql) {
return rightJoin(true, joinSql);
}
Children rightJoin(boolean condition, String joinSql);
default Children rightJoin(boolean condition, String joinSql){
return join(Constant.RIGHT_JOIN, condition, joinSql);
}
default Children innerJoin(String joinSql) {
return innerJoin(true, joinSql);
}
Children innerJoin(boolean condition, String joinSql);
default Children innerJoin(boolean condition, String joinSql){
return join(Constant.INNER_JOIN, condition, joinSql);
}
Children join(String keyWord, boolean condition, String joinSql);
}

2
src/main/java/com/github/mybatisplus/toolkit/Constant.java
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@ -11,8 +11,6 @@ public interface Constant {
*/
String TABLE_ALIAS = "t";
String AS = " AS ";
String ON = " ON ";
String EQUALS = " = ";

12
src/main/java/com/github/mybatisplus/toolkit/MyLambdaUtils.java
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@ -3,7 +3,6 @@ package com.github.mybatisplus.toolkit;
import com.baomidou.mybatisplus.core.toolkit.LambdaUtils;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.github.mybatisplus.func.MySFunction;
import org.apache.ibatis.reflection.property.PropertyNamer;
/**
@ -11,17 +10,20 @@ import org.apache.ibatis.reflection.property.PropertyNamer;
* @see LambdaUtils
* @see PropertyNamer
*/
public class MyLambdaUtils {
@SuppressWarnings("all")
public final class MyLambdaUtils {
public static <T> String getName(SFunction<T, ?> fn) {
return PropertyNamer.methodToProperty(LambdaUtils.resolve(fn).getImplMethodName());
}
public static <T> String getColumn(MySFunction<T, ?> fn) {
public static <T> String getColumn(SFunction<T, ?> fn) {
return StringUtils.camelToUnderline(getName(fn));
}
public static <T> Class<T> getEntityClass(MySFunction<T, ?> fn) {
return (Class<T>) LambdaUtils.resolve(fn).getImplClass();
public static <T> Class<T> getEntityClass(SFunction<T, ?> fn) {
return (Class<T>) LambdaUtils.resolve(fn).getInstantiatedType();
}
}

106
src/main/java/com/github/mybatisplus/wrapper/MyAbstractLambdaWrapper.java
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@ -1,39 +1,80 @@
/*
* Copyright (c) 2011-2021, baomidou (jobob@qq.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.mybatisplus.wrapper;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
import com.baomidou.mybatisplus.core.toolkit.Assert;
import com.baomidou.mybatisplus.core.toolkit.LambdaUtils;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.support.ColumnCache;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.baomidou.mybatisplus.core.toolkit.support.SerializedLambda;
import com.github.mybatisplus.toolkit.MyLambdaUtils;
import org.apache.ibatis.reflection.property.PropertyNamer;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import static java.util.stream.Collectors.joining;
/**
* copy {@link com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper}
* Lambda 语法使用 Wrapper
* <p>统一处理解析 lambda 获取 column</p>
*
* @author hubin miemie HCL
* @since 2017-05-26
*/
@SuppressWarnings("serial")
public abstract class MyAbstractLambdaWrapper<T, Children extends MyAbstractLambdaWrapper<T, Children>>
extends MyAbstractWrapper<T, SFunction<T, ?>, Children> {
extends MyAbstractWrapper<T, Children> {
private Map<String, ColumnCache> columnMap = null;
private boolean initColumnMap = false;
/**
* 参与连接的表<class,别名>
*/
protected Map<Class<?>, SubClass<?, ?>> subTable = new HashMap<>();
@SuppressWarnings("unchecked")
protected <X> String columnsToString(SFunction<X, ?>... columns) {
return columnsToString(true, columns);
}
@Override
protected String columnToString(SFunction<T, ?> column) {
return columnToString(column, true);
protected <X> String columnToString(X column) {
return columnToString((SFunction<?, ?>) column, true);
}
protected String columnToString(SFunction<T, ?> column, boolean onlyColumn) {
return getColumn(LambdaUtils.resolve(column), onlyColumn);
@SuppressWarnings("unchecked")
protected <X> String columnsToString(boolean onlyColumn, SFunction<X, ?>... columns) {
return Arrays.stream(columns).map(i -> columnToString(i, onlyColumn)).collect(joining(StringPool.COMMA));
}
protected String column2String(SFunction<?, ?> column, boolean onlyColumn) {
return getColumn(LambdaUtils.resolve(column), onlyColumn);
@Override
protected <X> String columnsToString(X... columns) {
return Arrays.stream(columns).map(i -> columnToString((SFunction<?, ?>) i, true)).collect(joining(StringPool.COMMA));
}
protected String columnToString(SFunction<?, ?> column, boolean onlyColumn) {
TableInfo info = TableInfoHelper.getTableInfo(MyLambdaUtils.getEntityClass(column));
Assert.notNull(info, "can not find table for lambda");
return info.getTableName() + StringPool.DOT + getColumn(LambdaUtils.resolve(column), onlyColumn);
}
@ -58,7 +99,14 @@ public abstract class MyAbstractLambdaWrapper<T, Children extends MyAbstractLamb
}
private void tryInitCache(Class<?> lambdaClass) {
columnMap = LambdaUtils.getColumnMap(lambdaClass);
if (!initColumnMap) {
final Class<T> entityClass = getEntityClass();
if (entityClass != null) {
lambdaClass = entityClass;
}
columnMap = LambdaUtils.getColumnMap(lambdaClass);
initColumnMap = true;
}
Assert.notNull(columnMap, "can not find lambda cache for this entity [%s]", lambdaClass.getName());
}
@ -68,4 +116,44 @@ public abstract class MyAbstractLambdaWrapper<T, Children extends MyAbstractLamb
fieldName, lambdaClass.getName());
return columnCache;
}
public static class SubClass<L, R> {
private String tableAlias;
private SFunction<L, ?> left;
private SFunction<R, ?> right;
public SubClass(String tableAlias, SFunction<L, ?> left, SFunction<R, ?> right) {
this.tableAlias = tableAlias;
this.left = left;
this.right = right;
}
public String getTableAlias() {
return tableAlias;
}
public void setTableAlias(String tableAlias) {
this.tableAlias = tableAlias;
}
public SFunction<L, ?> getLeft() {
return left;
}
public void setLeft(SFunction<L, ?> left) {
this.left = left;
}
public SFunction<R, ?> getRight() {
return right;
}
public void setRight(SFunction<R, ?> right) {
this.right = right;
}
}
}

350
src/main/java/com/github/mybatisplus/wrapper/MyAbstractWrapper.java
View File

@ -1,24 +1,56 @@
/*
* Copyright (c) 2011-2021, baomidou (jobob@qq.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.mybatisplus.wrapper;
import com.baomidou.mybatisplus.core.conditions.ISqlSegment;
import com.baomidou.mybatisplus.core.conditions.SharedString;
import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.interfaces.Join;
import com.baomidou.mybatisplus.core.conditions.interfaces.Nested;
import com.baomidou.mybatisplus.core.conditions.segments.MergeSegments;
import com.baomidou.mybatisplus.core.enums.SqlKeyword;
import com.baomidou.mybatisplus.core.enums.SqlLike;
import com.baomidou.mybatisplus.core.toolkit.*;
import com.baomidou.mybatisplus.core.toolkit.sql.SqlUtils;
import com.baomidou.mybatisplus.core.toolkit.sql.StringEscape;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.github.mybatisplus.wrapper.interfaces.MyCompare;
import com.github.mybatisplus.wrapper.interfaces.MyFunc;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.BiPredicate;
import java.util.function.Consumer;
import static com.baomidou.mybatisplus.core.enums.SqlKeyword.*;
import static com.baomidou.mybatisplus.core.enums.WrapperKeyword.APPLY;
import static java.util.stream.Collectors.joining;
/**
* copy {@link com.baomidou.mybatisplus.core.conditions.AbstractWrapper}
* 查询条件封装
*
* @author hubin miemie HCL
* @since 2017-05-26
*/
@SuppressWarnings({"serial", "unchecked"})
public abstract class MyAbstractWrapper<T, R, Children extends MyAbstractWrapper<T, R, Children>> extends Wrapper<T> {
public abstract class MyAbstractWrapper<T, Children extends MyAbstractWrapper<T, Children>> extends MyWrapper<T>
implements MyCompare<Children>, Nested<Children, Children>, Join<Children>, MyFunc<Children> {
/**
* 占位符
@ -73,6 +105,280 @@ public abstract class MyAbstractWrapper<T, R, Children extends MyAbstractWrapper
return typedThis;
}
@Override
public <X, V> Children allEq(boolean condition, Map<SFunction<X, ?>, V> params, boolean null2IsNull) {
if (condition && CollectionUtils.isNotEmpty(params)) {
params.forEach((k, v) -> {
if (StringUtils.checkValNotNull(v)) {
eq(k, v);
} else {
if (null2IsNull) {
isNull(k);
}
}
});
}
return typedThis;
}
@Override
public <X, V> Children allEq(boolean condition, BiPredicate<SFunction<X, ?>, V> filter, Map<SFunction<X, ?>, V> params, boolean null2IsNull) {
if (condition && CollectionUtils.isNotEmpty(params)) {
params.forEach((k, v) -> {
if (filter.test(k, v)) {
if (StringUtils.checkValNotNull(v)) {
eq(k, v);
} else {
if (null2IsNull) {
isNull(k);
}
}
}
});
}
return typedThis;
}
@Override
public <X> Children eq(boolean condition, SFunction<X, ?> column, Object val) {
return addCondition(condition, column, EQ, val);
}
@Override
public <X> Children ne(boolean condition, SFunction<X, ?> column, Object val) {
return addCondition(condition, column, NE, val);
}
@Override
public <X> Children gt(boolean condition, SFunction<X, ?> column, Object val) {
return addCondition(condition, column, GT, val);
}
@Override
public <X> Children ge(boolean condition, SFunction<X, ?> column, Object val) {
return addCondition(condition, column, GE, val);
}
@Override
public <X> Children lt(boolean condition, SFunction<X, ?> column, Object val) {
return addCondition(condition, column, LT, val);
}
@Override
public <X> Children le(boolean condition, SFunction<X, ?> column, Object val) {
return addCondition(condition, column, LE, val);
}
@Override
public <X> Children like(boolean condition, SFunction<X, ?> column, Object val) {
return likeValue(condition, LIKE, column, val, SqlLike.DEFAULT);
}
@Override
public <X> Children notLike(boolean condition, SFunction<X, ?> column, Object val) {
return likeValue(condition, NOT_LIKE, column, val, SqlLike.DEFAULT);
}
@Override
public <X> Children likeLeft(boolean condition, SFunction<X, ?> column, Object val) {
return likeValue(condition, LIKE, column, val, SqlLike.LEFT);
}
@Override
public <X> Children likeRight(boolean condition, SFunction<X, ?> column, Object val) {
return likeValue(condition, LIKE, column, val, SqlLike.RIGHT);
}
@Override
public <X> Children between(boolean condition, SFunction<X, ?> column, Object val1, Object val2) {
return doIt(condition, () -> columnToString(column), BETWEEN, () -> formatSql("{0}", val1), AND,
() -> formatSql("{0}", val2));
}
@Override
public <X> Children notBetween(boolean condition, SFunction<X, ?> column, Object val1, Object val2) {
return doIt(condition, () -> columnToString(column), NOT_BETWEEN, () -> formatSql("{0}", val1), AND,
() -> formatSql("{0}", val2));
}
@Override
public Children and(boolean condition, Consumer<Children> consumer) {
return and(condition).addNestedCondition(condition, consumer);
}
@Override
public Children or(boolean condition, Consumer<Children> consumer) {
return or(condition).addNestedCondition(condition, consumer);
}
@Override
public Children nested(boolean condition, Consumer<Children> consumer) {
return addNestedCondition(condition, consumer);
}
@Override
public Children not(boolean condition, Consumer<Children> consumer) {
return not(condition).addNestedCondition(condition, consumer);
}
@Override
public Children or(boolean condition) {
return doIt(condition, OR);
}
@Override
public Children apply(boolean condition, String applySql, Object... value) {
return doIt(condition, APPLY, () -> formatSql(applySql, value));
}
@Override
public Children last(boolean condition, String lastSql) {
if (condition) {
this.lastSql.setStringValue(StringPool.SPACE + lastSql);
}
return typedThis;
}
@Override
public Children comment(boolean condition, String comment) {
if (condition) {
this.sqlComment.setStringValue(comment);
}
return typedThis;
}
@Override
public Children first(boolean condition, String firstSql) {
if (condition) {
this.sqlFirst.setStringValue(firstSql);
}
return typedThis;
}
@Override
public Children exists(boolean condition, String existsSql) {
return doIt(condition, EXISTS, () -> String.format("(%s)", existsSql));
}
@Override
public Children notExists(boolean condition, String existsSql) {
return not(condition).exists(condition, existsSql);
}
@Override
public <X> Children isNull(boolean condition, SFunction<X, ?> column) {
return doIt(condition, () -> columnToString(column), IS_NULL);
}
@Override
public <X> Children isNotNull(boolean condition, SFunction<X, ?> column) {
return doIt(condition, () -> columnToString(column), IS_NOT_NULL);
}
@Override
public <X> Children in(boolean condition, SFunction<X, ?> column, Collection<?> coll) {
return doIt(condition, () -> columnToString(column), IN, inExpression(coll));
}
@Override
public <X> Children notIn(boolean condition, SFunction<X, ?> column, Collection<?> coll) {
return doIt(condition, () -> columnToString(column), NOT_IN, inExpression(coll));
}
@Override
public <X> Children inSql(boolean condition, SFunction<X, ?> column, String inValue) {
return doIt(condition, () -> columnToString(column), IN, () -> String.format("(%s)", inValue));
}
@Override
public <X> Children notInSql(boolean condition, SFunction<X, ?> column, String inValue) {
return doIt(condition, () -> columnToString(column), NOT_IN, () -> String.format("(%s)", inValue));
}
@Override
public <X> Children groupBy(boolean condition, SFunction<X, ?>... columns) {
if (ArrayUtils.isEmpty(columns)) {
return typedThis;
}
return doIt(condition, GROUP_BY,
() -> columns.length == 1 ? columnToString(columns[0]) : columnsToString(columns));
}
@Override
public <X> Children orderBy(boolean condition, boolean isAsc, SFunction<X, ?>... columns) {
if (ArrayUtils.isEmpty(columns)) {
return typedThis;
}
SqlKeyword mode = isAsc ? ASC : DESC;
for (SFunction<X, ?> column : columns) {
doIt(condition, ORDER_BY, () -> columnToString(column), mode);
}
return typedThis;
}
@Override
public Children having(boolean condition, String sqlHaving, Object... params) {
return doIt(condition, HAVING, () -> formatSqlIfNeed(condition, sqlHaving, params));
}
@Override
public Children func(boolean condition, Consumer<Children> consumer) {
if (condition) {
consumer.accept(typedThis);
}
return typedThis;
}
/**
* 内部自用
* <p>NOT 关键词</p>
*/
protected Children not(boolean condition) {
return doIt(condition, NOT);
}
/**
* 内部自用
* <p>拼接 AND</p>
*/
protected Children and(boolean condition) {
return doIt(condition, AND);
}
/**
* 内部自用
* <p>拼接 LIKE 以及 值</p>
*/
protected <X> Children likeValue(boolean condition, SqlKeyword keyword, SFunction<X, ?> column, Object val, SqlLike sqlLike) {
return doIt(condition, () -> columnToString(column), keyword, () -> formatSql("{0}", SqlUtils.concatLike(val, sqlLike)));
}
/**
* 普通查询条件
*
* @param condition 是否执行
* @param column 属性
* @param sqlKeyword SQL 关键词
* @param val 条件值
*/
protected <X> Children addCondition(boolean condition, SFunction<X, ?> column, SqlKeyword sqlKeyword, Object val) {
return doIt(condition, () -> columnToString(column), sqlKeyword, () -> formatSql("{0}", val));
}
/**
* 多重嵌套查询条件
*
* @param condition 查询条件值
*/
protected Children addNestedCondition(boolean condition, Consumer<Children> consumer) {
if (condition) {
final Children instance = instance();
consumer.accept(instance);
return doIt(true, APPLY, instance);
}
return typedThis;
}
/**
* 子类返回一个自己的新对象
*/
@ -122,6 +428,16 @@ public abstract class MyAbstractWrapper<T, R, Children extends MyAbstractWrapper
return sqlStr;
}
/**
* 获取in表达式 包含括号
*
* @param value 集合
*/
private ISqlSegment inExpression(Collection<?> value) {
return () -> value.stream().map(i -> formatSql("{0}", i))
.collect(joining(StringPool.COMMA, StringPool.LEFT_BRACKET, StringPool.RIGHT_BRACKET));
}
/**
* 必要的初始化
*/
@ -145,6 +461,20 @@ public abstract class MyAbstractWrapper<T, R, Children extends MyAbstractWrapper
sqlFirst.toEmpty();
}
/**
* 对sql片段进行组装
*
* @param condition 是否执行
* @param sqlSegments sql片段数组
* @return children
*/
protected Children doIt(boolean condition, ISqlSegment... sqlSegments) {
if (condition) {
expression.add(sqlSegments);
}
return typedThis;
}
@Override
public String getSqlSegment() {
return expression.getSqlSegment() + lastSql.getStringValue();
@ -171,14 +501,26 @@ public abstract class MyAbstractWrapper<T, R, Children extends MyAbstractWrapper
return expression;
}
public Map<String, Object> getParamNameValuePairs() {
return paramNameValuePairs;
}
/**
* 获取 columnName
*/
protected String columnToString(R column) {
protected <X> String columnToString(X column) {
return (String) column;
}
/**
* 多字段转换为逗号 "," 分割字符串
*
* @param columns 多字段
*/
protected <X> String columnsToString(X... columns) {
return Arrays.stream(columns).map(this::columnToString).collect(joining(StringPool.COMMA));
}
@Override
@SuppressWarnings("all")
public Children clone() {

354
src/main/java/com/github/mybatisplus/wrapper/MyJoinLambdaQueryWrapper.java
View File

@ -1,354 +0,0 @@
package com.github.mybatisplus.wrapper;
import com.baomidou.mybatisplus.core.conditions.SharedString;
import com.baomidou.mybatisplus.core.conditions.query.Query;
import com.baomidou.mybatisplus.core.conditions.segments.MergeSegments;
import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
import com.baomidou.mybatisplus.core.toolkit.ArrayUtils;
import com.baomidou.mybatisplus.core.toolkit.Assert;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.github.mybatisplus.func.MySFunction;
import com.github.mybatisplus.toolkit.MyLambdaUtils;
import com.github.mybatisplus.wrapper.interfaces.MyJoin;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Collectors;
/**
* 链接查询子Query
*
* @author yulichang
* @see com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper
* @since 2021/01/19
*/
@SuppressWarnings("all")
public class MyJoinLambdaQueryWrapper<T> extends MyAbstractLambdaWrapper<T, MyJoinLambdaQueryWrapper<T>>
implements Query<MyJoinLambdaQueryWrapper<T>, T, SFunction<T, ?>>, MyJoin<MyJoinLambdaQueryWrapper<T>, T> {
protected SharedString sqlSelect = new SharedString();
/**
* select字段
*/
protected List<SelectColumn> selectColumnList = new ArrayList<>();
/**
* 表名
*/
protected SharedString from = new SharedString();
/**
* 子表列表
*/
protected List<SubTable> classList = new ArrayList<>();
/**
* 表序号
*/
protected int rUid = 1;
public MyJoinLambdaQueryWrapper() {
setEntity(null);
super.initNeed();
}
public MyJoinLambdaQueryWrapper(int rUid) {
this.rUid = rUid;
setEntity(null);
super.initNeed();
}
public MyJoinLambdaQueryWrapper(T entity, Class<T> entityClass, SharedString sqlSelect, AtomicInteger paramNameSeq,
Map<String, Object> paramNameValuePairs, MergeSegments mergeSegments,
SharedString lastSql, SharedString sqlComment) {
setEntity(entity);
setEntityClass(entityClass);
this.paramNameSeq = paramNameSeq;
this.paramNameValuePairs = paramNameValuePairs;
this.expression = mergeSegments;
this.sqlSelect = sqlSelect;
this.lastSql = lastSql;
this.sqlComment = sqlComment;
}
@Override
protected MyJoinLambdaQueryWrapper<T> instance() {
return new MyJoinLambdaQueryWrapper<>(getEntity(), getEntityClass(), null, paramNameSeq, paramNameValuePairs,
new MergeSegments(), SharedString.emptyString(), SharedString.emptyString());
}
@Override
public void clear() {
super.clear();
this.sqlSelect.toNull();
this.selectColumnList.clear();
this.from.toNull();
this.classList.clear();
this.rUid = 1;
}
@SafeVarargs
@Override
public final MyJoinLambdaQueryWrapper<T> select(SFunction<T, ?>... columns) {
if (ArrayUtils.isNotEmpty(columns)) {
for (SFunction<T, ?> str : columns) {
selectColumnList.add(new SelectColumn(rUid, columnToString(str), null, null));
}
}
return typedThis;
}
/**
* 查询所有字段 (后置处理)
*/
public MyJoinLambdaQueryWrapper<T> selectAll(Class<T> clazz) {
setEntityClass(clazz);
TableInfo info = TableInfoHelper.getTableInfo(getEntityClass());
Assert.notNull(info, "can not find table to entity %s", clazz);
info.getFieldList().forEach(s ->
selectColumnList.add(new SelectColumn(this.rUid, s.getColumn(), null, null)));
if (StringUtils.isNotBlank(info.getKeyColumn())) {
selectColumnList.add(new SelectColumn(this.rUid, info.getKeyColumn(), null, null));
}
return typedThis;
}
/**
* 字段去重(同时使用select和as的情况下去除select中重复查询的列,优先使用as列作为查询字段)
* 注意:
* 只对selectDistinct前面的 select selectAll as(asCount ...)有效
* 只对当前的表去重,对连接查询的其他表不生效,如需要在对应的表下使用此方法
*/
public MyJoinLambdaQueryWrapper<T> selectDistinct() {
List<SelectColumn> collect = selectColumnList.stream().filter(i -> i.getUid() == rUid).collect(Collectors.toList());
List<SelectColumn> distinctList = new ArrayList<>();
List<SelectColumn> collect1 = collect.stream().distinct().collect(Collectors.toList());
if (collect.size() != collect1.size()) {
collect.forEach(i -> {
if (!collect1.contains(i)) {
distinctList.add(i);
}
});
}
for (SelectColumn x : collect1) {
if (x.getAs() != null) {
for (SelectColumn y : collect1) {
if (x.getUid() == y.getUid() && x.getColumn().equals(y.getColumn()) && y.getAs() == null) {
distinctList.add(y);
}
}
}
}
selectColumnList.removeIf(distinctList::contains);
return this;
}
@Override
public MyJoinLambdaQueryWrapper<T> select(Predicate<TableFieldInfo> predicate) {
return select(getEntityClass(), predicate);
}
@Override
public MyJoinLambdaQueryWrapper<T> select(Class<T> entityClass, Predicate<TableFieldInfo> predicate) {
setEntityClass(entityClass);
TableInfo info = TableInfoHelper.getTableInfo(getEntityClass());
Assert.notNull(info, "can not find table to entity %s", entityClass);
info.getFieldList().stream().filter(predicate).forEach(s ->
selectColumnList.add(new SelectColumn(this.rUid, s.getColumn(), null, null)));
return typedThis;
}
@Override
public <R, TE, RE> MyJoinLambdaQueryWrapper<T> join(boolean condition,
String alias,
String keyWord,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
if (condition) {
setEntityClass(MyLambdaUtils.getEntityClass(leftCondition));
int childrenId = rUid + 1;
Class<R> clazz = MyLambdaUtils.getEntityClass(rightCondition);
TableInfo info = TableInfoHelper.getTableInfo(clazz);
Assert.notNull(info, "can not find table to entity %s", clazz);
classList.add(new SubTable(alias, keyWord, rUid, MyLambdaUtils.getColumn(leftCondition), childrenId, MyLambdaUtils.getColumn(rightCondition), info.getTableName()));
MyJoinLambdaQueryWrapper<R> apply = (MyJoinLambdaQueryWrapper<R>) rightWrapper.apply(new MyJoinLambdaQueryWrapper<>(childrenId));
classList.addAll(apply.classList);
this.selectColumnList.addAll(apply.selectColumnList);
}
return this;
}
/**
* 连表条件
*/
public static class SubTable {
private String alias;
private String keyWord;
private int leftUid;
private String leftColumn;
private int rightUid;
private String rightColumn;
private String rightTableName;
public SubTable(String alias, String keyWord, int leftUid, String leftColumn, int rightUid, String rightColumn, String rightTableName) {
this.alias = alias;
this.keyWord = keyWord;
this.leftUid = leftUid;
this.leftColumn = leftColumn;
this.rightUid = rightUid;
this.rightColumn = rightColumn;
this.rightTableName = rightTableName;
}
public String getAlias() {
return alias;
}
public void setAlias(String alias) {
this.alias = alias;
}
public String getKeyWord() {
return keyWord;
}
public void setKeyWord(String keyWord) {
this.keyWord = keyWord;
}
public int getLeftUid() {
return leftUid;
}
public void setLeftUid(int leftUid) {
this.leftUid = leftUid;
}
public String getLeftColumn() {
return leftColumn;
}
public void setLeftColumn(String leftColumn) {
this.leftColumn = leftColumn;
}
public int getRightUid() {
return rightUid;
}
public void setRightUid(int rightUid) {
this.rightUid = rightUid;
}
public String getRightColumn() {
return rightColumn;
}
public void setRightColumn(String rightColumn) {
this.rightColumn = rightColumn;
}
public String getRightTableName() {
return rightTableName;
}
public void setRightTableName(String rightTableName) {
this.rightTableName = rightTableName;
}
}
/**
* select查询字段
*/
public static class SelectColumn {
private int uid;
private String column;
private String as;
private SelectFunc function;
public SelectColumn() {
}
public SelectColumn(int uid, String column, String as, SelectFunc function) {
this.uid = uid;
this.column = column;
this.as = as;
this.function = function;
}
public int getUid() {
return uid;
}
public void setUid(int uid) {
this.uid = uid;
}
public String getColumn() {
return column;
}
public void setColumn(String column) {
this.column = column;
}
public String getAs() {
return as;
}
public void setAs(String as) {
this.as = as;
}
public SelectFunc getFunction() {
return function;
}
public void setFunction(SelectFunc function) {
this.function = function;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof SelectColumn)) {
return false;
}
SelectColumn v = (SelectColumn) o;
return v.getUid() == this.uid
&& eq(v.getColumn(), this.column)
&& eq(v.getAs(), this.as)
&& eq(v.getFunction(), this.function);
}
private boolean eq(Object o1, Object o2) {
if (o1 == null && o2 == null) {
return true;
}
if (o1 == null || o2 == null) {
return false;
}
return o1.equals(o2);
}
}
}

575
src/main/java/com/github/mybatisplus/wrapper/MyLambdaQueryWrapper.java
View File

@ -1,506 +1,233 @@
/*
* Copyright (c) 2011-2021, baomidou (jobob@qq.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.mybatisplus.wrapper;
import com.baomidou.mybatisplus.core.conditions.ISqlSegment;
import com.baomidou.mybatisplus.core.conditions.SharedString;
import com.baomidou.mybatisplus.core.conditions.query.Query;
import com.baomidou.mybatisplus.core.conditions.segments.MergeSegments;
import com.baomidou.mybatisplus.core.enums.SqlKeyword;
import com.baomidou.mybatisplus.core.enums.SqlLike;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
import com.baomidou.mybatisplus.core.toolkit.*;
import com.baomidou.mybatisplus.core.toolkit.sql.SqlUtils;
import com.baomidou.mybatisplus.core.toolkit.ArrayUtils;
import com.baomidou.mybatisplus.core.toolkit.Assert;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.github.mybatisplus.func.MySFunction;
import com.github.mybatisplus.wrapper.interfaces.MyLambdaJoin;
import com.github.mybatisplus.wrapper.interfaces.MySFunctionQuery;
import com.github.mybatisplus.toolkit.Constant;
import com.github.mybatisplus.toolkit.MyLambdaUtils;
import com.github.mybatisplus.wrapper.interfaces.*;
import java.util.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;
import static com.baomidou.mybatisplus.core.enums.SqlKeyword.*;
import static com.baomidou.mybatisplus.core.enums.WrapperKeyword.APPLY;
import static java.util.stream.Collectors.joining;
import java.util.stream.Collectors;
/**
* 连接查询Query
* 只允许主表有条件查询,内部的表只允许select和继续连表的功能,
* 所以将条件查询接口在此实现 结构臃肿,有待进一步优化
* Lambda 语法使用 Wrapper
*
* @author yulichang
* @see com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper
* @see com.baomidou.mybatisplus.core.conditions.interfaces.Compare
* @see com.baomidou.mybatisplus.core.conditions.interfaces.Join
* @see com.baomidou.mybatisplus.core.conditions.interfaces.Nested
* @see com.baomidou.mybatisplus.core.conditions.interfaces.Func
* @since 2021/01/19
* @author hubin miemie HCL
* @since 2017-05-26
*/
@SuppressWarnings("all")
@SuppressWarnings("serial")
public class MyLambdaQueryWrapper<T> extends MyAbstractLambdaWrapper<T, MyLambdaQueryWrapper<T>>
implements
Query<MyLambdaQueryWrapper<T>, T, SFunction<T, ?>>,
MyJoin<MyLambdaQueryWrapper<T>, T>,
MyCompare<MyLambdaQueryWrapper<T>>,
MyNested<MyLambdaQueryWrapper<T>, MyLambdaQueryWrapper<T>>,
MyFunc<MyLambdaQueryWrapper<T>>,
MyMPJoin<MyLambdaQueryWrapper<T>> {
implements MySFunctionQuery<MyLambdaQueryWrapper<T>>, MyLambdaJoin<MyLambdaQueryWrapper<T>> {
/**
* 查询字段
*/
private SharedString sqlSelect = new SharedString();
private MyJoinLambdaQueryWrapper<T> wrapper = new MyJoinLambdaQueryWrapper<>();
/**
* 查询表
*/
private SharedString from = new SharedString();
/**
* 表别名初始序号
* 主表别名
*/
public static final int TABLE_ALIAS_INDEX = 0;
private SharedString alias = new SharedString();
private List<SelectColumn> selectColumns = new ArrayList<>();
/**
* 不建议直接 new 该实例，使用 Wrappers.lambdaQuery(entity)
*/
public MyLambdaQueryWrapper() {
this(null);
this((T) null);
}
/**
* 不建议直接 new 该实例，使用 Wrappers.lambdaQuery(entity)
*/
public MyLambdaQueryWrapper(T entity) {
wrapper.rUid = TABLE_ALIAS_INDEX;
wrapper.setEntity(entity);
super.setEntity(entity);
super.initNeed();
}
/**
* 不建议直接 new 该实例，使用 Wrappers.lambdaQuery(entity)
*/
public MyLambdaQueryWrapper(Class<T> entityClass) {
super.setEntityClass(entityClass);
super.initNeed();
}
/**
* 不建议直接 new 该实例，使用 Wrappers.lambdaQuery(...)
*/
MyLambdaQueryWrapper(T entity, Class<T> entityClass, SharedString sqlSelect, AtomicInteger paramNameSeq,
Map<String, Object> paramNameValuePairs, MergeSegments mergeSegments,
SharedString lastSql, SharedString sqlComment, SharedString sqlFirst,
int rUid, List<MyJoinLambdaQueryWrapper.SelectColumn> selectColumns, List<MyJoinLambdaQueryWrapper.SubTable> classList) {
SharedString lastSql, SharedString sqlComment, SharedString sqlFirst) {
super.setEntity(entity);
super.setEntityClass(entityClass);
this.paramNameSeq = paramNameSeq;
this.paramNameValuePairs = paramNameValuePairs;
this.expression = mergeSegments;
this.wrapper.sqlSelect = sqlSelect;
this.sqlSelect = sqlSelect;
this.lastSql = lastSql;
this.sqlComment = sqlComment;
this.sqlFirst = sqlFirst;
wrapper.rUid = rUid;
wrapper.selectColumnList = selectColumns;
wrapper.classList = classList;
}
@Override
protected MyLambdaQueryWrapper<T> instance() {
return new MyLambdaQueryWrapper<>(getEntity(), getEntityClass(), null, paramNameSeq, paramNameValuePairs,
new MergeSegments(), SharedString.emptyString(), SharedString.emptyString(), SharedString.emptyString(),
wrapper.rUid, wrapper.selectColumnList, wrapper.classList);
}
@Override
public <R, TE, RE> MyLambdaQueryWrapper<T> join(boolean condition,
String alias,
String keyWord,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
if (condition) {
setEntityClass(MyLambdaUtils.getEntityClass(leftCondition));
Class<R> clazz = MyLambdaUtils.getEntityClass(rightCondition);
TableInfo info = TableInfoHelper.getTableInfo(clazz);
Assert.notNull(info, "can not find table to entity %s", clazz);
wrapper.classList.add(new MyJoinLambdaQueryWrapper.SubTable(alias,
keyWord,
wrapper.rUid,
MyLambdaUtils.getColumn(leftCondition),
wrapper.classList.size() + 1,
MyLambdaUtils.getColumn(rightCondition),
info.getTableName()));
MyJoinLambdaQueryWrapper<R> apply = rightWrapper.apply(new MyJoinLambdaQueryWrapper<>(wrapper.classList.size()));
wrapper.classList.addAll(apply.classList);
wrapper.selectColumnList.addAll(apply.selectColumnList);
}
return this;
}
/**
* SELECT 部分 SQL 设置
*
* @param columns 查询字段
*/
@SafeVarargs
@Override
public final MyLambdaQueryWrapper<T> select(SFunction<T, ?>... columns) {
wrapper.select(columns);
return this;
public final <S> MyLambdaQueryWrapper<T> select(SFunction<S, ?>... columns) {
if (ArrayUtils.isNotEmpty(columns)) {
for (SFunction<S, ?> s : columns) {
Class<S> clazz = MyLambdaUtils.getEntityClass(s);
TableInfo info = TableInfoHelper.getTableInfo(clazz);
selectColumns.add(new SelectColumn(clazz, info.getTableName(), MyLambdaUtils.getColumn(s)));
}
}
return typedThis;
}
@Override
public MyLambdaQueryWrapper<T> select(Predicate<TableFieldInfo> predicate) {
wrapper.select(predicate);
return this;
public <E> MyLambdaQueryWrapper<T> select(Class<E> entityClass, Predicate<TableFieldInfo> predicate) {
TableInfo info = TableInfoHelper.getTableInfo(entityClass);
Assert.notNull(info, "table can not be find");
info.getFieldList().stream().filter(predicate).collect(Collectors.toList()).forEach(
i -> selectColumns.add(new SelectColumn(entityClass, info.getTableName(), i.getColumn())));
return typedThis;
}
@Override
public MyLambdaQueryWrapper<T> select(Class<T> entityClass, Predicate<TableFieldInfo> predicate) {
wrapper.select(entityClass, predicate);
return this;
}
public MyLambdaQueryWrapper<T> selectAll(Class<T> clazz) {
wrapper.selectAll(clazz);
return this;
}
public MyLambdaQueryWrapper<T> selectDistinct() {
wrapper.selectDistinct();
return this;
}
@Override
public String getSqlSelect() {
if (StringUtils.isBlank(wrapper.sqlSelect.getStringValue()) && CollectionUtils.isNotEmpty(wrapper.selectColumnList)) {
List<String> collect = new ArrayList<>();
wrapper.selectColumnList.forEach(c -> {
String s = Constant.TABLE_ALIAS + (c.getUid() == TABLE_ALIAS_INDEX ? "" : c.getUid()) + StringPool.DOT + c.getColumn();
if (c.getFunction() != null) {
s = String.format(c.getFunction().getSql(), s);
}
if (Objects.isNull(c.getAs())) {
collect.add(s);
} else {
collect.add(s + Constant.AS + c.getAs());
}
});
wrapper.sqlSelect.setStringValue(String.join(StringPool.COMMA, collect));
if (StringUtils.isBlank(sqlSelect.getStringValue())) {
String s = selectColumns.stream().map(i -> i.getTableName() + StringPool.DOT + i.getColumnName()).collect(Collectors.joining(StringPool.COMMA));
sqlSelect.setStringValue(s);
}
return wrapper.sqlSelect.getStringValue();
return sqlSelect.getStringValue();
}
public String getFrom() {
return from.getStringValue();
}
public String getAlias() {
return alias.getStringValue();
}
/**
* 用于生成嵌套 sql
* <p>故 sqlSelect 不向下传递</p>
*/
@Override
protected MyLambdaQueryWrapper<T> instance() {
return new MyLambdaQueryWrapper<>(getEntity(), getEntityClass(), null, paramNameSeq, paramNameValuePairs,
new MergeSegments(), SharedString.emptyString(), SharedString.emptyString(), SharedString.emptyString());
}
@Override
public void clear() {
super.clear();
sqlSelect.toNull();
}
public String getFrom() {
if (StringUtils.isNotBlank(wrapper.from.getStringValue())) {
return wrapper.from.getStringValue();
@Override
public <L, X> MyLambdaQueryWrapper<T> join(String keyWord, boolean condition, Class<L> clazz, SFunction<L, ?> left, SFunction<X, ?> right) {
if (condition) {
TableInfo leftInfo = TableInfoHelper.getTableInfo(clazz);
TableInfo rightInfo = TableInfoHelper.getTableInfo(MyLambdaUtils.getEntityClass(right));
String s = keyWord + leftInfo.getTableName() + Constant.ON + leftInfo.getTableName() + StringPool.DOT
+ MyLambdaUtils.getColumn(left) + Constant.EQUALS + rightInfo.getTableName() + StringPool.DOT
+ MyLambdaUtils.getColumn(right);
if (StringUtils.isBlank(from.getStringValue())) {
from.setStringValue(s);
} else {
from.setStringValue(from.getStringValue() + s);
}
}
StringBuilder sb = new StringBuilder();
wrapper.classList.forEach(right ->
sb.append(right.getKeyWord()).append(right.getRightTableName())
.append(StringPool.SPACE)
.append(Constant.TABLE_ALIAS)
.append(right.getRightUid() == TABLE_ALIAS_INDEX ? StringPool.EMPTY : right.getRightUid())
.append(Constant.ON)
.append(Constant.TABLE_ALIAS)
.append(right.getLeftUid() == TABLE_ALIAS_INDEX ? StringPool.EMPTY : right.getLeftUid())
.append(StringPool.DOT)
.append(right.getLeftColumn())
.append(Constant.EQUALS)
.append(Constant.TABLE_ALIAS)
.append(right.getRightUid() == TABLE_ALIAS_INDEX ? StringPool.EMPTY : right.getRightUid())
.append(StringPool.DOT)
.append(right.getRightColumn())
.append(StringPool.SPACE)
);
wrapper.from.setStringValue(sb.toString());
return wrapper.from.getStringValue();
return typedThis;
}
/**
* 获取表前缀
* select字段
*/
private String getClassTablePrefix(Class<?> clazz) {
if (getEntityClass() == clazz) {
return Constant.TABLE_ALIAS;
} else {
TableInfo info = TableInfoHelper.getTableInfo(clazz);
Assert.notNull(info, "can not find table to entity %s", clazz);
String tableName = info.getTableName();
for (MyJoinLambdaQueryWrapper.SubTable sub : wrapper.classList) {
if (sub.getRightTableName().equals(tableName)) {
return Constant.TABLE_ALIAS + sub.getRightUid();
}
}
public static class SelectColumn {
private Class<?> clazz;
private String tableName;
private String columnName;
public SelectColumn(Class<?> clazz, String tableName, String columnName) {
this.clazz = clazz;
this.tableName = tableName;
this.columnName = columnName;
}
throw new MybatisPlusException("table not find");
}
/**
* 获取column
*/
private <E, F> String getColumn(MySFunction<E, F> column, String alias) {
if (alias != null) {
if (alias.equals(Constant.TABLE_ALIAS)) {
return Constant.TABLE_ALIAS + StringPool.DOT + column2String(column, true);
}
for (MyJoinLambdaQueryWrapper.SubTable sub : wrapper.classList) {
if (alias.equals(sub.getAlias())) {
return Constant.TABLE_ALIAS + sub.getRightUid() + StringPool.DOT + column2String(column, true);
}
}
public Class<?> getClazz() {
return clazz;
}
return getClassTablePrefix(MyLambdaUtils.getEntityClass(column)) + StringPool.DOT + column2String(column, true);
}
private <E, F> String getColumn(String alias, MySFunction<E, F>... column) {
return Arrays.stream(column).map(i -> getColumn(i, alias)).collect(joining(StringPool.COMMA));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> eq(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return doIt(condition, () -> getColumn(column, alias), EQ,
() -> formatSql("{0}", val));
}
@Override
public <E, F, X, Y> MyLambdaQueryWrapper<T> eq(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return doIt(condition, () -> getColumn(column, alias), EQ, () -> getColumn(val, as));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> ne(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return doIt(condition, () -> getColumn(column, alias), NE, () -> formatSql("{0}", val));
}
@Override
public <E, F, X, Y> MyLambdaQueryWrapper<T> ne(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return doIt(condition, () -> getColumn(column, alias), NE, () -> getColumn(val, as));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> gt(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return doIt(condition, () -> getColumn(column, alias), GT, () -> formatSql("{0}", val));
}
@Override
public <E, F, X, Y> MyLambdaQueryWrapper<T> gt(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return doIt(condition, () -> getColumn(column, alias), GT, () -> getColumn(val, as));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> ge(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return doIt(condition, () -> getColumn(column, alias), GE, () -> formatSql("{0}", val));
}
@Override
public <E, F, X, Y> MyLambdaQueryWrapper<T> ge(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return doIt(condition, () -> getColumn(column, alias), GE, () -> getColumn(val, as));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> lt(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return doIt(condition, () -> getColumn(column, alias), LT, () -> formatSql("{0}", val));
}
@Override
public <E, F, X, Y> MyLambdaQueryWrapper<T> lt(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return doIt(condition, () -> getColumn(column, alias), LT, () -> getColumn(val, as));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> le(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return doIt(condition, () -> getColumn(column, alias), LE, () -> formatSql("{0}", val));
}
@Override
public <E, F, X, Y> MyLambdaQueryWrapper<T> le(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return doIt(condition, () -> getColumn(column, alias), LE, () -> getColumn(val, as));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> between(boolean condition, String alias, MySFunction<E, F> column, Object val1, Object val2) {
return doIt(condition, () -> getColumn(column, alias), BETWEEN, () -> formatSql("{0}", val1), AND,
() -> formatSql("{0}", val2));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> notBetween(boolean condition, String alias, MySFunction<E, F> column, Object val1, Object val2) {
return doIt(condition, () -> getColumn(column, alias), NOT_BETWEEN, () -> formatSql("{0}", val1), AND,
() -> formatSql("{0}", val2));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> like(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return likeValue(condition, LIKE, getColumn(column, alias), val, SqlLike.DEFAULT);
}
@Override
public <E, F> MyLambdaQueryWrapper<T> notLike(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return likeValue(condition, NOT_LIKE, getColumn(column, alias), val, SqlLike.DEFAULT);
}
@Override
public <E, F> MyLambdaQueryWrapper<T> likeLeft(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return likeValue(condition, LIKE, getColumn(column, alias), val, SqlLike.LEFT);
}
@Override
public <E, F> MyLambdaQueryWrapper<T> likeRight(boolean condition, String alias, MySFunction<E, F> column, Object val) {
return likeValue(condition, LIKE, getColumn(column, alias), val, SqlLike.RIGHT);
}
@Override
public MyLambdaQueryWrapper<T> and(boolean condition, Consumer<MyLambdaQueryWrapper<T>> consumer) {
return and(condition).addNestedCondition(condition, consumer);
}
@Override
public MyLambdaQueryWrapper<T> or(boolean condition, Consumer<MyLambdaQueryWrapper<T>> consumer) {
return or(condition).addNestedCondition(condition, consumer);
}
@Override
public MyLambdaQueryWrapper<T> nested(boolean condition, Consumer<MyLambdaQueryWrapper<T>> consumer) {
return addNestedCondition(condition, consumer);
}
@Override
public MyLambdaQueryWrapper<T> not(boolean condition, Consumer<MyLambdaQueryWrapper<T>> consumer) {
return not(condition).addNestedCondition(condition, consumer);
}
private MyLambdaQueryWrapper<T> and(boolean condition) {
return doIt(condition, AND);
}
@Override
public MyLambdaQueryWrapper<T> or(boolean condition) {
return doIt(condition, OR);
}
@Override
public MyLambdaQueryWrapper<T> apply(boolean condition, String applySql, Object... value) {
return doIt(condition, APPLY, () -> formatSql(applySql, value));
}
@Override
public MyLambdaQueryWrapper<T> last(boolean condition, String lastSql) {
if (condition) {
this.lastSql.setStringValue(StringPool.SPACE + lastSql);
public void setClazz(Class<?> clazz) {
this.clazz = clazz;
}
return typedThis;
}
@Override
public MyLambdaQueryWrapper<T> comment(boolean condition, String comment) {
if (condition) {
this.sqlComment.setStringValue(comment);
public String getTableName() {
return tableName;
}
return typedThis;
}
@Override
public MyLambdaQueryWrapper<T> first(boolean condition, String firstSql) {
if (condition) {
this.sqlFirst.setStringValue(firstSql);
public void setTableName(String tableName) {
this.tableName = tableName;
}
return typedThis;
}
@Override
public MyLambdaQueryWrapper<T> exists(boolean condition, String existsSql) {
return doIt(condition, EXISTS, () -> String.format("(%s)", existsSql));
}
@Override
public MyLambdaQueryWrapper<T> notExists(boolean condition, String existsSql) {
return not(condition).exists(condition, existsSql);
}
private MyLambdaQueryWrapper<T> not(boolean condition) {
return doIt(condition, NOT);
}
private MyLambdaQueryWrapper<T> doIt(boolean condition, ISqlSegment... sqlSegments) {
if (condition) {
expression.add(sqlSegments);
public String getColumnName() {
return columnName;
}
return this;
}
private MyLambdaQueryWrapper<T> likeValue(boolean condition, SqlKeyword keyword, String column, Object val, SqlLike sqlLike) {
return doIt(condition, () -> column, keyword, () -> formatSql("{0}", SqlUtils.concatLike(val, sqlLike)));
}
protected MyLambdaQueryWrapper<T> addCondition(boolean condition, String column, SqlKeyword sqlKeyword, Object val) {
return doIt(condition, () -> column, sqlKeyword, () -> formatSql("{0}", val));
}
private MyLambdaQueryWrapper<T> addNestedCondition(boolean condition, Consumer<MyLambdaQueryWrapper<T>> consumer) {
if (condition) {
final MyLambdaQueryWrapper<T> instance = instance();
consumer.accept(instance);
return doIt(true, APPLY, instance);
public void setColumnName(String columnName) {
this.columnName = columnName;
}
return this;
}
private ISqlSegment inExpression(Collection<?> value) {
return () -> value.stream().map(i -> formatSql("{0}", i))
.collect(joining(StringPool.COMMA, StringPool.LEFT_BRACKET, StringPool.RIGHT_BRACKET));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> isNull(boolean condition, String alias, MySFunction<E, F> column) {
return doIt(condition, () -> getColumn(column, alias), IS_NULL);
}
@Override
public <E, F> MyLambdaQueryWrapper<T> isNotNull(boolean condition, String alias, MySFunction<E, F> column) {
return doIt(condition, () -> getColumn(column, alias), IS_NOT_NULL);
}
@Override
public <E, F> MyLambdaQueryWrapper<T> in(boolean condition, String alias, MySFunction<E, F> column, Collection<?> coll) {
return doIt(condition, () -> getColumn(column, alias), IN, inExpression(coll));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> notIn(boolean condition, String alias, MySFunction<E, F> column, Collection<?> coll) {
return doIt(condition, () -> getColumn(column, alias), NOT_IN, inExpression(coll));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> inSql(boolean condition, String alias, MySFunction<E, F> column, String inValue) {
return doIt(condition, () -> getColumn(column, alias), IN, () -> String.format("(%s)", inValue));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> notInSql(boolean condition, String alias, MySFunction<E, F> column, String inValue) {
return doIt(condition, () -> getColumn(column, alias), NOT_IN, () -> String.format("(%s)", inValue));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> groupBy(boolean condition, String alias, MySFunction<E, F>... columns) {
if (ArrayUtils.isEmpty(columns)) {
return this;
}
return doIt(condition, GROUP_BY,
() -> columns.length == 1 ? getColumn(columns[0], alias) : getColumn(alias, columns));
}
@Override
public <E, F> MyLambdaQueryWrapper<T> orderBy(boolean condition, String alias, boolean isAsc, MySFunction<E, F>... columns) {
if (ArrayUtils.isEmpty(columns)) {
return this;
}
SqlKeyword mode = isAsc ? ASC : DESC;
for (MySFunction<E, F> column : columns) {
doIt(condition, ORDER_BY, () -> getColumn(column, alias), mode);
}
return this;
}
@Override
public MyLambdaQueryWrapper<T> having(boolean condition, String alias, String sqlHaving, Object... params) {
return doIt(condition, HAVING, () -> formatSqlIfNeed(condition, sqlHaving, params));
}
@Override
public MyLambdaQueryWrapper<T> func(boolean condition, String alias, Consumer<MyLambdaQueryWrapper<T>> consumer) {
if (condition) {
consumer.accept(this);
}
return this;
}
}

170
src/main/java/com/github/mybatisplus/wrapper/MyWrapper.java Normal file
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@ -0,0 +1,170 @@
package com.github.mybatisplus.wrapper;
import com.baomidou.mybatisplus.core.conditions.ISqlSegment;
import com.baomidou.mybatisplus.core.conditions.segments.MergeSegments;
import com.baomidou.mybatisplus.core.conditions.segments.NormalSegmentList;
import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
import com.baomidou.mybatisplus.core.toolkit.*;
import java.util.Objects;
/**
* copy {@link com.baomidou.mybatisplus.core.conditions.Wrapper}
* <p>
* join wrapper的顶级wrapper
* 与mp的Wrapper没做任何改动
* <p>
* 因为单表wrapper与多表wrapper体系不一样,暂时先分开,后续可以统一wrapper
*/
@SuppressWarnings("all")
public abstract class MyWrapper<T> implements ISqlSegment {
/**
* 实体对象（子类实现）
*
* @return 泛型 T
*/
public abstract T getEntity();
public String getSqlSelect() {
return null;
}
public String getSqlSet() {
return null;
}
public String getSqlComment() {
return null;
}
public String getSqlFirst() {
return null;
}
/**
* 获取 MergeSegments
*/
public abstract MergeSegments getExpression();
/**
* 获取自定义SQL 简化自定义XML复杂情况
* <p>
* 使用方法: `select xxx from table` + ${ew.customSqlSegment}
* <p>
* 注意事项:
* 1. 逻辑删除需要自己拼接条件 (之前自定义也同样)
* 2. 不支持wrapper中附带实体的情况 (wrapper自带实体会更麻烦)
* 3. 用法 ${ew.customSqlSegment} (不需要where标签包裹,切记!)
* 4. ew是wrapper定义别名,不能使用其他的替换
*/
public String getCustomSqlSegment() {
MergeSegments expression = getExpression();
if (Objects.nonNull(expression)) {
NormalSegmentList normal = expression.getNormal();
String sqlSegment = getSqlSegment();
if (StringUtils.isNotBlank(sqlSegment)) {
if (normal.isEmpty()) {
return sqlSegment;
} else {
return Constants.WHERE + StringPool.SPACE + sqlSegment;
}
}
}
return StringPool.EMPTY;
}
/**
* 查询条件为空(包含entity)
*/
public boolean isEmptyOfWhere() {
return isEmptyOfNormal() && isEmptyOfEntity();
}
/**
* 查询条件不为空(包含entity)
*/
public boolean nonEmptyOfWhere() {
return !isEmptyOfWhere();
}
/**
* 查询条件为空(不包含entity)
*/
public boolean isEmptyOfNormal() {
return CollectionUtils.isEmpty(getExpression().getNormal());
}
/**
* 查询条件为空(不包含entity)
*/
public boolean nonEmptyOfNormal() {
return !isEmptyOfNormal();
}
/**
* 深层实体判断属性
*
* @return true 不为空
*/
public boolean nonEmptyOfEntity() {
T entity = getEntity();
if (entity == null) {
return false;
}
TableInfo tableInfo = TableInfoHelper.getTableInfo(entity.getClass());
if (tableInfo == null) {
return false;
}
if (tableInfo.getFieldList().stream().anyMatch(e -> fieldStrategyMatch(entity, e))) {
return true;
}
return StringUtils.isNotBlank(tableInfo.getKeyProperty()) ? Objects.nonNull(ReflectionKit.getFieldValue(entity, tableInfo.getKeyProperty())) : false;
}
/**
* 根据实体FieldStrategy属性来决定判断逻辑
*/
private boolean fieldStrategyMatch(T entity, TableFieldInfo e) {
switch (e.getWhereStrategy()) {
case NOT_NULL:
return Objects.nonNull(ReflectionKit.getFieldValue(entity, e.getProperty()));
case IGNORED:
return true;
case NOT_EMPTY:
return StringUtils.checkValNotNull(ReflectionKit.getFieldValue(entity, e.getProperty()));
case NEVER:
return false;
default:
return Objects.nonNull(ReflectionKit.getFieldValue(entity, e.getProperty()));
}
}
/**
* 深层实体判断属性
*
* @return true 为空
*/
public boolean isEmptyOfEntity() {
return !nonEmptyOfEntity();
}
/**
* 获取格式化后的执行sql
*
* @return sql
* @since 3.3.1
*/
public String getTargetSql() {
return getSqlSegment().replaceAll("#\\{.+?}", "?");
}
/**
* 条件清空
*
* @since 3.3.1
*/
abstract public void clear();
}

27
src/main/java/com/github/mybatisplus/wrapper/SelectFunc.java
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@ -1,27 +0,0 @@
package com.github.mybatisplus.wrapper;
public enum SelectFunc {
SUM("SUM( %s )", "求和"),
COUNT("COUNT( %s )", "数量"),
AVG("AVG( %s )", "平均值"),
MAX("MAX( %s )", "最大值"),
MIN("MIN( %s )", "最小值"),
DATE_FORMAT("DATE_FORMAT( %s ,'%Y-%m-%d %H:%i:%s')", "日期格式化");
private final String sql;
private final String desc;
SelectFunc(String sql, String desc) {
this.sql = sql;
this.desc = desc;
}
public String getSql() {
return sql;
}
public String getDesc() {
return desc;
}
}

689
src/main/java/com/github/mybatisplus/wrapper/interfaces/MyCompare.java
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@ -1,422 +1,287 @@
/*
* Copyright (c) 2011-2021, baomidou (jobob@qq.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.mybatisplus.wrapper.interfaces;
import com.github.mybatisplus.func.MySFunction;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import java.io.Serializable;
import java.util.Map;
import java.util.function.BiPredicate;
/**
* copy {@link com.baomidou.mybatisplus.core.conditions.interfaces.Compare}
* 查询条件封装
* <p>比较值</p>
*
* @author hubin miemie HCL
* @since 2017-05-26
*/
public interface MyCompare<Children> extends Serializable {
/* 遗弃allEq */
/* ***************************************** eq start ********************************************* */
<E, F> Children eq(boolean condition, String alias, MySFunction<E, F> column, Object val);
default <E, F> Children eq(boolean condition, MySFunction<E, F> column, Object val) {
return eq(condition, null, column, val);
}
default <E, F> Children eq(String alias, MySFunction<E, F> column, Object val) {
return eq(true, alias, column, val);
}
default <E, F> Children eq(MySFunction<E, F> column, Object val) {
return eq(true, null, column, val);
}
<E, F, X, Y> Children eq(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val);
default <E, F, X, Y> Children eq(MySFunction<E, F> column, MySFunction<X, Y> val) {
return eq(true, null, column, null, val);
}
default <E, F, X, Y> Children eq(Boolean condition, MySFunction<E, F> column, MySFunction<X, Y> val) {
return eq(condition, null, column, null, val);
}
default <E, F, X, Y> Children eq(String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return eq(true, alias, column, null, val);
}
default <E, F, X, Y> Children eq(MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return eq(true, null, column, as, val);
}
default <E, F, X, Y> Children eq(Boolean condition, String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return eq(condition, alias, column, null, val);
}
default <E, F, X, Y> Children eq(Boolean condition, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return eq(condition, null, column, as, val);
}
default <E, F, X, Y> Children eq(String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return eq(true, alias, column, as, val);
}
/* ***************************************** eq end ********************************************* */
/* ***************************************** ne start ********************************************* */
default <E, F> Children ne(MySFunction<E, F> column, Object val) {
return ne(true, null, column, val);
}
default <E, F> Children ne(boolean condition, MySFunction<E, F> column, Object val) {
return ne(condition, null, column, val);
}
default <E, F> Children ne(String alias, MySFunction<E, F> column, Object val) {
return ne(true, alias, column, val);
}
<E, F> Children ne(boolean condition, String alias, MySFunction<E, F> column, Object val);
default <E, F, X, Y> Children ne(MySFunction<E, F> column, MySFunction<X, Y> val) {
return ne(true, null, column, null, val);
}
default <E, F, X, Y> Children ne(boolean condition, MySFunction<E, F> column, MySFunction<X, Y> val) {
return ne(condition, null, column, null, val);
}
default <E, F, X, Y> Children ne(String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return ne(true, alias, column, null, val);
}
default <E, F, X, Y> Children ne(MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return ne(true, null, column, as, val);
}
default <E, F, X, Y> Children ne(boolean condition, String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return ne(condition, alias, column, null, val);
}
default <E, F, X, Y> Children ne(String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return ne(true, alias, column, as, val);
}
default <E, F, X, Y> Children ne(boolean condition, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return ne(condition, null, column, as, val);
}
<E, F, X, Y> Children ne(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val);
/* ***************************************** ne end ********************************************* */
/* ***************************************** gt start ********************************************* */
default <E, F> Children gt(MySFunction<E, F> column, Object val) {
return gt(true, null, column, val);
}
default <E, F> Children gt(boolean condition, MySFunction<E, F> column, Object val) {
return gt(condition, null, column, val);
}
default <E, F> Children gt(String alias, MySFunction<E, F> column, Object val) {
return gt(true, alias, column, val);
}
<E, F> Children gt(boolean condition, String alias, MySFunction<E, F> column, Object val);
default <E, F, X, Y> Children gt(MySFunction<E, F> column, MySFunction<X, Y> val) {
return gt(true, null, column, null, val);
}
default <E, F, X, Y> Children gt(boolean condition, MySFunction<E, F> column, MySFunction<X, Y> val) {
return gt(condition, null, column, null, val);
}
default <E, F, X, Y> Children gt(String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return gt(true, alias, column, null, val);
}
default <E, F, X, Y> Children gt(MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return gt(true, null, column, as, val);
}
default <E, F, X, Y> Children gt(boolean condition, String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return gt(condition, alias, column, null, val);
}
default <E, F, X, Y> Children gt(String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return gt(true, alias, column, as, val);
}
default <E, F, X, Y> Children gt(boolean condition, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return gt(condition, null, column, as, val);
}
<E, F, X, Y> Children gt(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val);
/* ***************************************** gt end ********************************************* */
/* ***************************************** ge start ********************************************* */
default <E, F> Children ge(MySFunction<E, F> column, Object val) {
return ge(true, null, column, val);
}
default <E, F> Children ge(boolean condition, MySFunction<E, F> column, Object val) {
return ge(condition, null, column, val);
}
default <E, F> Children ge(String alias, MySFunction<E, F> column, Object val) {
return ge(true, alias, column, val);
}
<E, F> Children ge(boolean condition, String alias, MySFunction<E, F> column, Object val);
default <E, F, X, Y> Children ge(MySFunction<E, F> column, MySFunction<X, Y> val) {
return ge(true, null, column, null, val);
}
default <E, F, X, Y> Children ge(boolean condition, MySFunction<E, F> column, MySFunction<X, Y> val) {
return ge(condition, null, column, null, val);
}
default <E, F, X, Y> Children ge(String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return ge(true, alias, column, null, val);
}
default <E, F, X, Y> Children ge(MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return ge(true, null, column, as, val);
}
default <E, F, X, Y> Children ge(boolean condition, String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return ge(condition, alias, column, null, val);
}
default <E, F, X, Y> Children ge(String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return ge(true, alias, column, as, val);
}
default <E, F, X, Y> Children ge(boolean condition, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return ge(condition, null, column, as, val);
}
<E, F, X, Y> Children ge(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val);
/* ***************************************** ge end ********************************************* */
/* ***************************************** lt start ********************************************* */
default <E, F> Children lt(MySFunction<E, F> column, Object val) {
return lt(true, null, column, val);
}
default <E, F> Children lt(boolean condition, MySFunction<E, F> column, Object val) {
return lt(condition, null, column, val);
}
default <E, F> Children lt(String alias, MySFunction<E, F> column, Object val) {
return lt(true, alias, column, val);
}
<E, F> Children lt(boolean condition, String alias, MySFunction<E, F> column, Object val);
default <E, F, X, Y> Children lt(MySFunction<E, F> column, MySFunction<X, Y> val) {
return lt(true, null, column, null, val);
}
default <E, F, X, Y> Children lt(boolean condition, MySFunction<E, F> column, MySFunction<X, Y> val) {
return lt(condition, null, column, null, val);
}
default <E, F, X, Y> Children lt(String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return lt(true, alias, column, null, val);
}
default <E, F, X, Y> Children lt(MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return lt(true, null, column, as, val);
}
default <E, F, X, Y> Children lt(boolean condition, String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return lt(condition, alias, column, null, val);
}
default <E, F, X, Y> Children lt(String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return lt(true, alias, column, as, val);
}
default <E, F, X, Y> Children lt(boolean condition, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return lt(condition, null, column, as, val);
}
<E, F, X, Y> Children lt(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val);
/* ***************************************** lt end ********************************************* */
/* ***************************************** lt start ********************************************* */
default <E, F> Children le(MySFunction<E, F> column, Object val) {
return le(true, null, column, val);
}
default <E, F> Children le(boolean condition, MySFunction<E, F> column, Object val) {
return le(condition, null, column, val);
}
default <E, F> Children le(String alias, MySFunction<E, F> column, Object val) {
return le(true, alias, column, val);
}
<E, F> Children le(boolean condition, String alias, MySFunction<E, F> column, Object val);
default <E, F, X, Y> Children le(MySFunction<E, F> column, MySFunction<X, Y> val) {
return le(true, null, column, null, val);
}
default <E, F, X, Y> Children le(boolean condition, MySFunction<E, F> column, MySFunction<X, Y> val) {
return le(condition, null, column, null, val);
}
default <E, F, X, Y> Children le(String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return le(true, alias, column, null, val);
}
default <E, F, X, Y> Children le(MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return le(true, null, column, as, val);
}
default <E, F, X, Y> Children le(boolean condition, String alias, MySFunction<E, F> column, MySFunction<X, Y> val) {
return le(condition, alias, column, null, val);
}
default <E, F, X, Y> Children le(String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return le(true, alias, column, as, val);
}
default <E, F, X, Y> Children le(boolean condition, MySFunction<E, F> column, String as, MySFunction<X, Y> val) {
return le(condition, null, column, as, val);
}
<E, F, X, Y> Children le(boolean condition, String alias, MySFunction<E, F> column, String as, MySFunction<X, Y> val);
/* ***************************************** le end ********************************************* */
/* ***************************************** between start ********************************************* */
default <E, F> Children between(MySFunction<E, F> column, Object val1, Object val2) {
return between(true, null, column, val1, val2);
}
default <E, F> Children between(boolean condition, MySFunction<E, F> column, Object val1, Object val2) {
return between(condition, null, column, val1, val2);
}
default <E, F> Children between(String alias, MySFunction<E, F> column, Object val1, Object val2) {
return between(true, alias, column, val1, val2);
}
<E, F> Children between(boolean condition, String alias, MySFunction<E, F> column, Object val1, Object val2);
/* ***************************************** between end ********************************************* */
/* ***************************************** notBetween start ********************************************* */
default <E, F> Children notBetween(MySFunction<E, F> column, Object val1, Object val2) {
return notBetween(true, null, column, val1, val2);
}
default <E, F> Children notBetween(boolean condition, MySFunction<E, F> column, Object val1, Object val2) {
return notBetween(condition, null, column, val1, val2);
}
default <E, F> Children notBetween(String alias, MySFunction<E, F> column, Object val1, Object val2) {
return notBetween(true, alias, column, val1, val2);
}
<E, F> Children notBetween(boolean condition, String alias, MySFunction<E, F> column, Object val1, Object val2);
/* ***************************************** notBetween end ********************************************* */
/* ***************************************** like start ********************************************* */
default <E, F> Children like(MySFunction<E, F> column, Object val) {
return like(true, null, column, val);
}
default <E, F> Children like(boolean condition, MySFunction<E, F> column, Object val) {
return like(condition, null, column, val);
}
default <E, F> Children like(String alias, MySFunction<E, F> column, Object val) {
return like(true, alias, column, val);
}
<E, F> Children like(boolean condition, String alias, MySFunction<E, F> column, Object val);
/* ***************************************** like end ********************************************* */
/* ***************************************** notLike start ********************************************* */
default <E, F> Children notLike(MySFunction<E, F> column, Object val) {
return notLike(true, null, column, val);
}
default <E, F> Children notLike(boolean condition, MySFunction<E, F> column, Object val) {
return notLike(condition, null, column, val);
}
default <E, F> Children notLike(String alias, MySFunction<E, F> column, Object val) {
return notLike(true, alias, column, val);
}
<E, F> Children notLike(boolean condition, String alias, MySFunction<E, F> column, Object val);
/* ***************************************** notLike end ********************************************* */
/* ***************************************** likeLeft start ********************************************* */
default <E, F> Children likeLeft(MySFunction<E, F> column, Object val) {
return likeLeft(true, null, column, val);
}
default <E, F> Children likeLeft(boolean condition, MySFunction<E, F> column, Object val) {
return likeLeft(condition, null, column, val);
}
default <E, F> Children likeLeft(String alias, MySFunction<E, F> column, Object val) {
return likeLeft(true, alias, column, val);
}
<E, F> Children likeLeft(boolean condition, String alias, MySFunction<E, F> column, Object val);
/* ***************************************** likeLeft end ********************************************* */
/* ***************************************** likeRight start ********************************************* */
default <E, F> Children likeRight(MySFunction<E, F> column, Object val) {
return likeRight(true, null, column, val);
}
default <E, F> Children likeRight(boolean condition, MySFunction<E, F> column, Object val) {
return likeRight(condition, null, column, val);
}
default <E, F> Children likeRight(String alias, MySFunction<E, F> column, Object val) {
return likeRight(true, alias, column, val);
}
<E, F> Children likeRight(boolean condition, String alias, MySFunction<E, F> column, Object val);
/* ***************************************** likeRight end ********************************************* */
/**
* ignore
*/
default <R, V> Children allEq(Map<SFunction<R,?>, V> params) {
return allEq(params, true);
}
/**
* ignore
*/
default <R, V> Children allEq(Map<SFunction<R,?>, V> params, boolean null2IsNull) {
return allEq(true, params, null2IsNull);
}
/**
* map 所有非空属性等于 =
*
* @param condition 执行条件
* @param params map 类型的参数, key 是字段名, value 是字段值
* @param null2IsNull 是否参数为 null 自动执行 isNull 方法, false 则忽略这个字段\
* @return children
*/
<R, V> Children allEq(boolean condition, Map<SFunction<R,?>, V> params, boolean null2IsNull);
/**
* ignore
*/
default <R, V> Children allEq(BiPredicate<SFunction<R,?>, V> filter, Map<SFunction<R,?>, V> params) {
return allEq(filter, params, true);
}
/**
* ignore
*/
default <R, V> Children allEq(BiPredicate<SFunction<R,?>, V> filter, Map<SFunction<R,?>, V> params, boolean null2IsNull) {
return allEq(true, filter, params, null2IsNull);
}
/**
* 字段过滤接口，传入多参数时允许对参数进行过滤
*
* @param condition 执行条件
* @param filter 返回 true 来允许字段传入比对条件中
* @param params map 类型的参数, key 是字段名, value 是字段值
* @param null2IsNull 是否参数为 null 自动执行 isNull 方法, false 则忽略这个字段
* @return children
*/
<R, V> Children allEq(boolean condition, BiPredicate<SFunction<R,?>, V> filter, Map<SFunction<R,?>, V> params, boolean null2IsNull);
/**
* ignore
*/
default <R> Children eq(SFunction<R,?> column, Object val) {
return eq(true, column, val);
}
/**
* 等于 =
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children eq(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children ne(SFunction<R,?> column, Object val) {
return ne(true, column, val);
}
/**
* 不等于 &lt;&gt;
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children ne(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children gt(SFunction<R,?> column, Object val) {
return gt(true, column, val);
}
/**
* 大于 &gt;
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children gt(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children ge(SFunction<R,?> column, Object val) {
return ge(true, column, val);
}
/**
* 大于等于 &gt;=
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children ge(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children lt(SFunction<R,?> column, Object val) {
return lt(true, column, val);
}
/**
* 小于 &lt;
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children lt(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children le(SFunction<R,?> column, Object val) {
return le(true, column, val);
}
/**
* 小于等于 &lt;=
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children le(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children between(SFunction<R,?> column, Object val1, Object val2) {
return between(true, column, val1, val2);
}
/**
* BETWEEN 值1 AND 值2
*
* @param condition 执行条件
* @param column 字段
* @param val1 值1
* @param val2 值2
* @return children
*/
<R> Children between(boolean condition, SFunction<R,?> column, Object val1, Object val2);
/**
* ignore
*/
default <R> Children notBetween(SFunction<R,?> column, Object val1, Object val2) {
return notBetween(true, column, val1, val2);
}
/**
* NOT BETWEEN 值1 AND 值2
*
* @param condition 执行条件
* @param column 字段
* @param val1 值1
* @param val2 值2
* @return children
*/
<R> Children notBetween(boolean condition, SFunction<R,?> column, Object val1, Object val2);
/**
* ignore
*/
default <R> Children like(SFunction<R,?> column, Object val) {
return like(true, column, val);
}
/**
* LIKE '%值%'
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children like(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children notLike(SFunction<R,?> column, Object val) {
return notLike(true, column, val);
}
/**
* NOT LIKE '%值%'
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children notLike(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children likeLeft(SFunction<R,?> column, Object val) {
return likeLeft(true, column, val);
}
/**
* LIKE '%值'
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children likeLeft(boolean condition, SFunction<R,?> column, Object val);
/**
* ignore
*/
default <R> Children likeRight(SFunction<R,?> column, Object val) {
return likeRight(true, column, val);
}
/**
* LIKE '值%'
*
* @param condition 执行条件
* @param column 字段
* @param val 值
* @return children
*/
<R> Children likeRight(boolean condition, SFunction<R,?> column, Object val);
}

397
src/main/java/com/github/mybatisplus/wrapper/interfaces/MyFunc.java
View File

@ -1,6 +1,21 @@
/*
* Copyright (c) 2011-2021, baomidou (jobob@qq.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.mybatisplus.wrapper.interfaces;
import com.github.mybatisplus.func.MySFunction;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import java.io.Serializable;
import java.util.Arrays;
@ -11,203 +26,289 @@ import java.util.function.Consumer;
import static java.util.stream.Collectors.toList;
/**
* copy {@link com.baomidou.mybatisplus.core.conditions.interfaces.Func}
* 查询条件封装
*
* @author hubin miemie HCL
* @since 2017-05-26
*/
@SuppressWarnings("unchecked")
public interface MyFunc<Children> extends Serializable {
default <E, F> Children isNull(MySFunction<E, F> column) {
return isNull(true, null, column);
/**
* ignore
*/
default <R> Children isNull(SFunction<R,?> column) {
return isNull(true, column);
}
default <E, F> Children isNull(boolean condition, MySFunction<E, F> column) {
return isNull(condition, null, column);
}
/**
* 字段 IS NULL
* <p>例: isNull("name")</p>
*
* @param condition 执行条件
* @param column 字段
* @return children
*/
<R> Children isNull(boolean condition, SFunction<R,?> column);
default <E, F> Children isNull(String alias, MySFunction<E, F> column) {
return isNull(true, alias, column);
}
<E, F> Children isNull(boolean condition, String alias, MySFunction<E, F> column);
default <E, F> Children isNotNull(MySFunction<E, F> column) {
/**
* ignore
*/
default <R> Children isNotNull(SFunction<R,?> column) {
return isNotNull(true, column);
}
default <E, F> Children isNotNull(boolean condition, MySFunction<E, F> column) {
return isNotNull(condition, null, column);
/**
* 字段 IS NOT NULL
* <p>例: isNotNull("name")</p>
*
* @param condition 执行条件
* @param column 字段
* @return children
*/
<R> Children isNotNull(boolean condition, SFunction<R,?> column);
/**
* ignore
*/
default <R> Children in(SFunction<R,?> column, Collection<?> coll) {
return in(true, column, coll);
}
default <E, F> Children isNotNull(String alias, MySFunction<E, F> column) {
return isNotNull(true, alias, column);
/**
* 字段 IN (value.get(0), value.get(1), ...)
* <p>例: in("id", Arrays.asList(1, 2, 3, 4, 5))</p>
*
* <li> 如果集合为 empty 则不会进行 sql 拼接 </li>
*
* @param condition 执行条件
* @param column 字段
* @param coll 数据集合
* @return children
*/
<R> Children in(boolean condition, SFunction<R,?> column, Collection<?> coll);
/**
* ignore
*/
default <R> Children in(SFunction<R,?> column, Object... values) {
return in(true, column, values);
}
<E, F> Children isNotNull(boolean condition, String alias, MySFunction<E, F> column);
default <E, F> Children in(MySFunction<E, F> column, Collection<?> coll) {
return in(true, null, column, coll);
}
default <E, F> Children in(boolean condition, MySFunction<E, F> column, Collection<?> coll) {
return in(condition, null, column, coll);
}
default <E, F> Children in(String alias, MySFunction<E, F> column, Collection<?> coll) {
return in(true, alias, column, coll);
}
<E, F> Children in(boolean condition, String alias, MySFunction<E, F> column, Collection<?> coll);
default <E, F> Children in(MySFunction<E, F> column, Object... values) {
return in(true, null, column, values);
}
default <E, F> Children in(boolean condition, MySFunction<E, F> column, Object... values) {
return in(condition, null, column, values);
}
default <E, F> Children in(String alias, MySFunction<E, F> column, Object... values) {
return in(true, alias, column, values);
}
default <E, F> Children in(boolean condition, String alias, MySFunction<E, F> column, Object... values) {
return in(condition, alias, column, Arrays.stream(Optional.ofNullable(values).orElseGet(() -> new Object[]{}))
/**
* 字段 IN (v0, v1, ...)
* <p>例: in("id", 1, 2, 3, 4, 5)</p>
*
* <li> 如果动态数组为 empty 则不会进行 sql 拼接 </li>
*
* @param condition 执行条件
* @param column 字段
* @param values 数据数组
* @return children
*/
default <R> Children in(boolean condition, SFunction<R,?> column, Object... values) {
return in(condition, column, Arrays.stream(Optional.ofNullable(values).orElseGet(() -> new Object[]{}))
.collect(toList()));
}
default <E, F> Children notIn(MySFunction<E, F> column, Collection<?> coll) {
return notIn(true, null, column, coll);
/**
* ignore
*/
default <R> Children notIn(SFunction<R,?> column, Collection<?> coll) {
return notIn(true, column, coll);
}
default <E, F> Children notIn(boolean condition, MySFunction<E, F> column, Collection<?> coll) {
return notIn(condition, null, column, coll);
/**
* 字段 NOT IN (value.get(0), value.get(1), ...)
* <p>例: notIn("id", Arrays.asList(1, 2, 3, 4, 5))</p>
*
* @param condition 执行条件
* @param column 字段
* @param coll 数据集合
* @return children
*/
<R> Children notIn(boolean condition, SFunction<R,?> column, Collection<?> coll);
/**
* ignore
*/
default <R> Children notIn(SFunction<R,?> column, Object... value) {
return notIn(true, column, value);
}
default <E, F> Children notIn(String alias, MySFunction<E, F> column, Collection<?> coll) {
return notIn(true, alias, column, coll);
}
<E, F> Children notIn(boolean condition, String alias, MySFunction<E, F> column, Collection<?> coll);
default <E, F> Children notIn(MySFunction<E, F> column, Object... value) {
return notIn(true, null, column, value);
}
default <E, F> Children notIn(boolean condition, MySFunction<E, F> column, Object... value) {
return notIn(condition, null, column, value);
}
default <E, F> Children notIn(String alias, MySFunction<E, F> column, Object... value) {
return notIn(true, alias, column, value);
}
default <E, F> Children notIn(boolean condition, String alias, MySFunction<E, F> column, Object... values) {
return notIn(condition, alias, column, Arrays.stream(Optional.ofNullable(values).orElseGet(() -> new Object[]{}))
/**
* 字段 NOT IN (v0, v1, ...)
* <p>例: notIn("id", 1, 2, 3, 4, 5)</p>
*
* @param condition 执行条件
* @param column 字段
* @param values 数据数组
* @return children
*/
default <R> Children notIn(boolean condition, SFunction<R,?> column, Object... values) {
return notIn(condition, column, Arrays.stream(Optional.ofNullable(values).orElseGet(() -> new Object[]{}))
.collect(toList()));
}
default <E, F> Children inSql(MySFunction<E, F> column, String inValue) {
return inSql(true, null, column, inValue);
/**
* ignore
*/
default <R> Children inSql(SFunction<R,?> column, String inValue) {
return inSql(true, column, inValue);
}
default <E, F> Children inSql(boolean condition, MySFunction<E, F> column, String inValue) {
return inSql(condition, null, column, inValue);
/**
* 字段 IN ( sql语句 )
* <p>!! sql 注入方式的 in 方法 !!</p>
* <p>例1: inSql("id", "1, 2, 3, 4, 5, 6")</p>
* <p>例2: inSql("id", "select id from table where id &lt; 3")</p>
*
* @param condition 执行条件
* @param column 字段
* @param inValue sql语句
* @return children
*/
<R> Children inSql(boolean condition, SFunction<R,?> column, String inValue);
/**
* ignore
*/
default <R> Children notInSql(SFunction<R,?> column, String inValue) {
return notInSql(true, column, inValue);
}
default <E, F> Children inSql(String alias, MySFunction<E, F> column, String inValue) {
return inSql(true, alias, column, inValue);
/**
* 字段 NOT IN ( sql语句 )
* <p>!! sql 注入方式的 not in 方法 !!</p>
* <p>例1: notInSql("id", "1, 2, 3, 4, 5, 6")</p>
* <p>例2: notInSql("id", "select id from table where id &lt; 3")</p>
*
* @param condition 执行条件
* @param column 字段
* @param inValue sql语句 ---&gt; 1,2,3,4,5,6 或者 select id from table where id &lt; 3
* @return children
*/
<R> Children notInSql(boolean condition, SFunction<R,?> column, String inValue);
/**
* ignore
*/
default <R> Children groupBy(SFunction<R,?> column) {
return groupBy(true, column);
}
<E, F> Children inSql(boolean condition, String alias, MySFunction<E, F> column, String inValue);
default <E, F> Children notInSql(MySFunction<E, F> column, String inValue) {
return notInSql(true, null, column, inValue);
/**
* ignore
*/
default <R> Children groupBy(SFunction<R,?>... columns) {
return groupBy(true, columns);
}
default <E, F> Children notInSql(boolean condition, MySFunction<E, F> column, String inValue) {
return notInSql(condition, null, column, inValue);
/**
* 分组：GROUP BY 字段, ...
* <p>例: groupBy("id", "name")</p>
*
* @param condition 执行条件
* @param columns 字段数组
* @return children
*/
<R> Children groupBy(boolean condition, SFunction<R,?>... columns);
/**
* ignore
*/
default <R> Children orderByAsc(SFunction<R,?> column) {
return orderByAsc(true, column);
}
default <E, F> Children notInSql(String alias, MySFunction<E, F> column, String inValue) {
return notInSql(true, alias, column, inValue);
/**
* ignore
*/
default <R> Children orderByAsc(SFunction<R,?>... columns) {
return orderByAsc(true, columns);
}
<E, F> Children notInSql(boolean condition, String alias, MySFunction<E, F> column, String inValue);
default <E, F> Children groupBy(MySFunction<E, F>... columns) {
return groupBy(true, null, columns);
/**
* 排序：ORDER BY 字段, ... ASC
* <p>例: orderByAsc("id", "name")</p>
*
* @param condition 执行条件
* @param columns 字段数组
* @return children
*/
default <R> Children orderByAsc(boolean condition, SFunction<R,?>... columns) {
return orderBy(condition, true, columns);
}
default <E, F> Children groupBy(boolean condition, MySFunction<E, F>... columns) {
return groupBy(condition, null, columns);
/**
* ignore
*/
default <R> Children orderByDesc(SFunction<R,?> column) {
return orderByDesc(true, column);
}
default <E, F> Children groupBy(String alias, MySFunction<E, F>... columns) {
return groupBy(true, alias, columns);
/**
* ignore
*/
default <R> Children orderByDesc(SFunction<R,?>... columns) {
return orderByDesc(true, columns);
}
<E, F> Children groupBy(boolean condition, String alias, MySFunction<E, F>... columns);
default <E, F> Children orderByAsc(MySFunction<E, F>... columns) {
return orderByAsc(true, null, columns);
/**
* 排序：ORDER BY 字段, ... DESC
* <p>例: orderByDesc("id", "name")</p>
*
* @param condition 执行条件
* @param columns 字段数组
* @return children
*/
default <R> Children orderByDesc(boolean condition, SFunction<R,?>... columns) {
return orderBy(condition, false, columns);
}
default <E, F> Children orderByAsc(boolean condition, MySFunction<E, F>... columns) {
return orderByAsc(condition, null, columns);
}
default <E, F> Children orderByAsc(String alias, MySFunction<E, F>... columns) {
return orderByAsc(true, alias, columns);
}
default <E, F> Children orderByAsc(boolean condition, String alias, MySFunction<E, F>... columns) {
return orderBy(condition, alias, true, columns);
}
default <E, F> Children orderByDesc(MySFunction<E, F>... columns) {
return orderByDesc(true, null, columns);
}
default <E, F> Children orderByDesc(boolean condition, MySFunction<E, F>... columns) {
return orderByDesc(condition, null, columns);
}
default <E, F> Children orderByDesc(String alias, MySFunction<E, F>... columns) {
return orderByDesc(true, alias, columns);
}
default <E, F> Children orderByDesc(boolean condition, String alias, MySFunction<E, F>... columns) {
return orderBy(condition, alias, false, columns);
}
<E, F> Children orderBy(boolean condition, String alias, boolean isAsc, MySFunction<E, F>... columns);
/**
* 排序：ORDER BY 字段, ...
* <p>例: orderBy(true, "id", "name")</p>
*
* @param condition 执行条件
* @param isAsc 是否是 ASC 排序
* @param columns 字段数组
* @return children
*/
<R> Children orderBy(boolean condition, boolean isAsc, SFunction<R,?>... columns);
/**
* ignore
*/
default Children having(String sqlHaving, Object... params) {
return having(true, null, sqlHaving, params);
return having(true, sqlHaving, params);
}
default Children having(boolean condition, String sqlHaving, Object... params) {
return having(condition, null, sqlHaving, params);
}
default Children having(String alias, String sqlHaving, Object... params) {
return having(true, alias, sqlHaving, params);
}
Children having(boolean condition, String alias, String sqlHaving, Object... params);
/**
* HAVING ( sql语句 )
* <p>例1: having("sum(age) &gt; 10")</p>
* <p>例2: having("sum(age) &gt; {0}", 10)</p>
*
* @param condition 执行条件
* @param sqlHaving sql 语句
* @param params 参数数组
* @return children
*/
Children having(boolean condition, String sqlHaving, Object... params);
/**
* ignore
*/
default Children func(Consumer<Children> consumer) {
return func(true, null, consumer);
return func(true, consumer);
}
default Children func(boolean condition, Consumer<Children> consumer) {
return func(condition, null, consumer);
}
default Children func(String alias, Consumer<Children> consumer) {
return func(true, alias, consumer);
}
Children func(boolean condition, String alias, Consumer<Children> consumer);
/**
* 消费函数
*
* @param consumer 消费函数
* @return children
* @since 3.3.1
*/
Children func(boolean condition, Consumer<Children> consumer);
}

111
src/main/java/com/github/mybatisplus/wrapper/interfaces/MyJoin.java
View File

@ -1,111 +0,0 @@
package com.github.mybatisplus.wrapper.interfaces;
import com.github.mybatisplus.func.MySFunction;
import com.github.mybatisplus.toolkit.Constant;
import com.github.mybatisplus.wrapper.MyJoinLambdaQueryWrapper;
import java.util.function.Function;
/**
* @author yulichang
*/
public interface MyJoin<Children, T> {
default <R, TE, RE> Children leftJoin(boolean condition,
String alias,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return join(condition, alias, Constant.LEFT_JOIN, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children leftJoin(MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return leftJoin(true, null, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children leftJoin(String alias,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return leftJoin(true, alias, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children leftJoin(boolean condition,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return leftJoin(condition, null, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children rightJoin(boolean condition,
String alias,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return join(condition, alias, Constant.RIGHT_JOIN, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children rightJoin(MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return rightJoin(true, null, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children rightJoin(String alias,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return rightJoin(true, alias, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children rightJoin(boolean condition,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return rightJoin(condition, null, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children innerJoin(boolean condition,
String alias,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return join(condition, alias, Constant.INNER_JOIN, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children innerJoin(MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return innerJoin(true, null, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children innerJoin(String alias,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return innerJoin(true, alias, leftCondition, rightCondition, rightWrapper);
}
default <R, TE, RE> Children innerJoin(boolean condition,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper) {
return innerJoin(condition, null, leftCondition, rightCondition, rightWrapper);
}
<R, TE, RE> Children join(boolean condition,
String alias,
String keyWord,
MySFunction<T, TE> leftCondition,
MySFunction<R, RE> rightCondition,
Function<MyJoinLambdaQueryWrapper<R>, MyJoinLambdaQueryWrapper<R>> rightWrapper);
}

35
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package com.github.mybatisplus.wrapper.interfaces;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.github.mybatisplus.toolkit.Constant;
public interface MyLambdaJoin<Children> {
default <T, X> Children leftJoin(Class<T> clazz, SFunction<T, ?> left, SFunction<X, ?> right) {
return leftJoin(true, clazz, left, right);
}
default <T, X> Children leftJoin(boolean condition, Class<T> clazz, SFunction<T, ?> left, SFunction<X, ?> right) {
return join(Constant.LEFT_JOIN, condition, clazz, left, right);
}
default <T, X> Children rightJoin(Class<T> clazz, SFunction<T, ?> left, SFunction<X, ?> right) {
return rightJoin(true, clazz, left, right);
}
default <T, X> Children rightJoin(boolean condition, Class<T> clazz, SFunction<T, ?> left, SFunction<X, ?> right) {
return join(Constant.RIGHT_JOIN, condition, clazz, left, right);
}
default <T, X> Children innerJoin(Class<T> clazz, SFunction<T, ?> left, SFunction<X, ?> right) {
return innerJoin(true, clazz, left, right);
}
default <T, X> Children innerJoin(boolean condition, Class<T> clazz, SFunction<T, ?> left, SFunction<X, ?> right) {
return join(Constant.INNER_JOIN, condition, clazz, left, right);
}
<T, X> Children join(String keyWord, boolean condition, Class<T> clazz, SFunction<T, ?> left, SFunction<X, ?> right);
}

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package com.github.mybatisplus.wrapper.interfaces;
import java.io.Serializable;
/**
* copy {@link com.baomidou.mybatisplus.core.conditions.interfaces.Join}
*/
public interface MyMPJoin<Children> extends Serializable {
/**
* ignore
*/
default Children or() {
return or(true);
}
/**
* 拼接 OR
*
* @param condition 执行条件
* @return children
*/
Children or(boolean condition);
/**
* ignore
*/
default Children apply(String applySql, Object... value) {
return apply(true, applySql, value);
}
/**
* 拼接 sql
* <p>!! 会有 sql 注入风险 !!</p>
* <p>例1: apply("id = 1")</p>
* <p>例2: apply("date_format(dateColumn,'%Y-%m-%d') = '2008-08-08'")</p>
* <p>例3: apply("date_format(dateColumn,'%Y-%m-%d') = {0}", LocalDate.now())</p>
*
* @param condition 执行条件
* @return children
*/
Children apply(boolean condition, String applySql, Object... value);
/**
* ignore
*/
default Children last(String lastSql) {
return last(true, lastSql);
}
/**
* 无视优化规则直接拼接到 sql 的最后(有sql注入的风险,请谨慎使用)
* <p>例: last("limit 1")</p>
* <p>注意只能调用一次,多次调用以最后一次为准</p>
*
* @param condition 执行条件
* @param lastSql sql语句
* @return children
*/
Children last(boolean condition, String lastSql);
/**
* ignore
*/
default Children comment(String comment) {
return comment(true, comment);
}
/**
* sql 注释(会拼接在 sql 的最后面)
*
* @param condition 执行条件
* @param comment sql注释
* @return children
*/
Children comment(boolean condition, String comment);
/**
* ignore
*/
default Children first(String firstSql) {
return first(true, firstSql);
}
/**
* sql 起始句（会拼接在SQL语句的起始处）
*
* @param condition 执行条件
* @param firstSql 起始语句
* @return children
* @since 3.3.1
*/
Children first(boolean condition, String firstSql);
/**
* ignore
*/
default Children exists(String existsSql) {
return exists(true, existsSql);
}
/**
* 拼接 EXISTS ( sql语句 )
* <p>!! sql 注入方法 !!</p>
* <p>例: exists("select id from table where age = 1")</p>
*
* @param condition 执行条件
* @param existsSql sql语句
* @return children
*/
Children exists(boolean condition, String existsSql);
/**
* ignore
*/
default Children notExists(String existsSql) {
return notExists(true, existsSql);
}
/**
* 拼接 NOT EXISTS ( sql语句 )
* <p>!! sql 注入方法 !!</p>
* <p>例: notExists("select id from table where age = 1")</p>
*
* @param condition 执行条件
* @param existsSql sql语句
* @return children
*/
Children notExists(boolean condition, String existsSql);
}

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package com.github.mybatisplus.wrapper.interfaces;
import java.io.Serializable;
import java.util.function.Consumer;
/**
* copy {@link com.baomidou.mybatisplus.core.conditions.interfaces.Nested}
*/
public interface MyNested<Param, Children> extends Serializable {
/**
* ignore
*/
default Children and(Consumer<Param> consumer) {
return and(true, consumer);
}
/**
* AND 嵌套
* <p>
* 例: and(i -&gt; i.eq("name", "李白").ne("status", "活着"))
* </p>
*
* @param condition 执行条件
* @param consumer 消费函数
* @return children
*/
Children and(boolean condition, Consumer<Param> consumer);
/**
* ignore
*/
default Children or(Consumer<Param> consumer) {
return or(true, consumer);
}
/**
* OR 嵌套
* <p>
* 例: or(i -&gt; i.eq("name", "李白").ne("status", "活着"))
* </p>
*
* @param condition 执行条件
* @param consumer 消费函数
* @return children
*/
Children or(boolean condition, Consumer<Param> consumer);
/**
* ignore
*/
default Children nested(Consumer<Param> consumer) {
return nested(true, consumer);
}
/**
* 正常嵌套 不带 AND 或者 OR
* <p>
* 例: nested(i -&gt; i.eq("name", "李白").ne("status", "活着"))
* </p>
*
* @param condition 执行条件
* @param consumer 消费函数
* @return children
*/
Children nested(boolean condition, Consumer<Param> consumer);
/**
* ignore
*/
default Children not(Consumer<Param> consumer) {
return not(true, consumer);
}
/**
* not嵌套
* <p>
* 例: not(i -&gt; i.eq("name", "李白").ne("status", "活着"))
* </p>
*
* @param condition 执行条件
* @param consumer 消费函数
* @return children
*/
Children not(boolean condition, Consumer<Param> consumer);
}

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/*
* Copyright (c) 2011-2021, baomidou (jobob@qq.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.mybatisplus.wrapper.interfaces;
import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import java.io.Serializable;
import java.util.function.Predicate;
/**
* copy {@link com.baomidou.mybatisplus.core.conditions.query.Query}
*/
public interface MySFunctionQuery<Children> extends Serializable {
/**
* 设置查询字段
*
* @param columns 字段数组
* @return children
*/
@SuppressWarnings("unchecked")
<E> Children select(SFunction<E, ?>... columns);
/**
* ignore
* <p>注意只有内部有 entity 才能使用该方法</p>
*/
default Children select(Predicate<TableFieldInfo> predicate) {
return select(null, predicate);
}
/**
* 过滤查询的字段信息(主键除外!)
* <p>例1: 只要 java 字段名以 "test" 开头的 -> select(i -> i.getProperty().startsWith("test"))</p>
* <p>例2: 只要 java 字段属性是 CharSequence 类型的 -> select(TableFieldInfo::isCharSequence)</p>
* <p>例3: 只要 java 字段没有填充策略的 -> select(i -> i.getFieldFill() == FieldFill.DEFAULT)</p>
* <p>例4: 要全部字段 -> select(i -> true)</p>
* <p>例5: 只要主键字段 -> select(i -> false)</p>
*
* @param predicate 过滤方式
* @return children
*/
<E>Children select(Class<E> entityClass, Predicate<TableFieldInfo> predicate);
/**
* 查询条件 SQL 片段
*/
String getSqlSelect();
}