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MPJLambdaWrapper支持select子查询

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This commit is contained in:
bjdys 2021-08-14 14:35:33 +08:00
parent 55d4a9eb59
commit 626a98601d
8 changed files with 118 additions and 234 deletions
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5
src/main/java/com/baomidou/mybatisplus/core/metadata/MPJTableInfo.java
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@ -29,6 +29,11 @@ public class MPJTableInfo {
*/
private String alias;
/**
* 前缀
*/
private String aliasDOT;
/**
* 是否包含映射注解
*/

4
src/main/java/com/baomidou/mybatisplus/core/metadata/MPJTableInfoHelper.java
View File

@ -5,6 +5,7 @@ import com.baomidou.mybatisplus.core.config.GlobalConfig;
import com.baomidou.mybatisplus.core.toolkit.*;
import com.github.yulichang.annotation.MPJMapping;
import com.github.yulichang.annotation.MPJTableAlias;
import com.github.yulichang.toolkit.Constant;
import org.apache.ibatis.builder.MapperBuilderAssistant;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
@ -167,7 +168,8 @@ public class MPJTableInfoHelper {
tableInfo.setAlias(tableAlias.value());
return;
}
tableInfo.setAlias("t" + index.getAndIncrement());
tableInfo.setAlias(Constant.TABLE_ALIAS + index.getAndIncrement());
tableInfo.setAliasDOT(tableInfo.getAlias() + StringPool.DOT);
}
/**

3
src/main/java/com/github/yulichang/annotation/MPJTableAlias.java
View File

@ -5,6 +5,9 @@ import java.lang.annotation.*;
/**
* 关联查询时的表别名
* 框架默认会随机生成 一般是 t1 t2 t3 ...
* 不要在程序中使用随机别名，运行期间是不变的，但是重启就不一定了
* 如需使用请配合此注解一起使用
* <p>
* 这个注解定义的表别名或者随机生成的别名只对MPJLambdaWrapper生效
* 对MPJQueryWrapper不生效,
*

23
src/main/java/com/github/yulichang/wrapper/MPJAbstractLambdaWrapper.java
View File

@ -9,7 +9,6 @@ import com.github.yulichang.toolkit.LambdaUtils;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import static java.util.stream.Collectors.joining;
@ -27,7 +26,13 @@ public abstract class MPJAbstractLambdaWrapper<T, Children extends MPJAbstractLa
@Override
protected <X> String columnToString(X column) {
return columnToString((SFunction<?, ?>) column);
return columnToString((SFunction<?, ?>) column, hasAlias || entityClass !=
LambdaUtils.getEntityClass((SFunction<?, ?>) column));
}
@Override
protected <X> String columnToString(X column, boolean hasAlias) {
return columnToString((SFunction<?, ?>) column, hasAlias);
}
@Override
@ -36,9 +41,9 @@ public abstract class MPJAbstractLambdaWrapper<T, Children extends MPJAbstractLa
return Arrays.stream(columns).map(i -> columnToString((SFunction<?, ?>) i)).collect(joining(StringPool.COMMA));
}
protected String columnToString(SFunction<?, ?> column) {
return MPJTableInfoHelper.getTableInfo(LambdaUtils.getEntityClass(column)).getAlias() + StringPool.DOT +
getCache(column).getColumn();
protected String columnToString(SFunction<?, ?> column, boolean hasAlias) {
return (hasAlias ? MPJTableInfoHelper.getTableInfo(LambdaUtils.getEntityClass(column)).getAliasDOT() :
StringPool.EMPTY) + getCache(column).getColumn();
}
protected ColumnCache getCache(SFunction<?, ?> fn) {
@ -50,12 +55,4 @@ public abstract class MPJAbstractLambdaWrapper<T, Children extends MPJAbstractLa
}
return cacheMap.get(LambdaUtils.formatKey(LambdaUtils.getName(fn)));
}
protected String getDefault(Integer i) {
if (Objects.nonNull(i)) {
return i.toString();
}
return StringPool.EMPTY;
}
}

83
src/main/java/com/github/yulichang/wrapper/MPJAbstractWrapper.java
View File

@ -11,6 +11,7 @@ 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.yulichang.toolkit.LambdaUtils;
import com.github.yulichang.toolkit.sql.SqlScriptUtils;
import com.github.yulichang.wrapper.interfaces.Compare;
import com.github.yulichang.wrapper.interfaces.Func;
@ -35,10 +36,17 @@ import static java.util.stream.Collectors.joining;
*
* @author yulichang
*/
@SuppressWarnings("ALL")
//@SuppressWarnings("ALL")
@SuppressWarnings({"unchecked", "unused"})
public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<T, Children>> extends Wrapper<T>
implements Compare<Children>, Nested<Children, Children>, Join<Children>, Func<Children>, OnCompare<Children> {
/**
* 是否使用别名
*/
protected boolean hasAlias;
/**
* 占位符
*/
@ -51,7 +59,7 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
/**
* 其他
*/
/* mybatis plus 3.4.3新增 这个时wrapper的别名 不是MPJ的别名 */
/* mybatis plus 3.4.3新增 这个是wrapper的别名 不是MPJ的别名 */
protected SharedString paramAlias;
protected SharedString lastSql;
/**
@ -71,32 +79,13 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
/**
* 实体类型(主要用于确定泛型以及取TableInfo缓存)
*/
private Class<T> entityClass;
protected Class<?> entityClass;
@Override
public T getEntity() {
return entity;
}
public Children setEntity(T entity) {
this.entity = entity;
return typedThis;
}
public Class<T> getEntityClass() {
if (entityClass == null && entity != null) {
entityClass = (Class<T>) entity.getClass();
}
return entityClass;
}
public Children setEntityClass(Class<T> entityClass) {
if (entityClass != null) {
this.entityClass = entityClass;
}
return typedThis;
}
@Override
public <X, V> Children allEq(boolean condition, Map<SFunction<X, ?>, V> params, boolean null2IsNull) {
if (condition && CollectionUtils.isNotEmpty(params)) {
@ -329,7 +318,6 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
* 字段 SQL 注入过滤处理，子类重写实现过滤逻辑
*
* @param column 字段内容
* @return
*/
protected <X> SFunction<X, ?> columnSqlInjectFilter(SFunction<X, ?> column) {
return column;
@ -384,9 +372,11 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
() -> formatParam(null, val)));
}
protected <X, S> Children addCondition(boolean condition, SFunction<X, ?> column, SqlKeyword sqlKeyword, SFunction<S, ?> val) {
return maybeDo(condition, () -> appendSqlSegments(columnToSqlSegment(column), sqlKeyword,
columnToSqlSegment(val)));
protected <X, S> Children addCondition(boolean condition, SFunction<X, ?> column, SqlKeyword sqlKeyword,
SFunction<S, ?> val) {
return maybeDo(condition, () -> appendSqlSegments(columnToSqlSegment(column, hasAlias || entityClass !=
LambdaUtils.getEntityClass(column)), sqlKeyword, columnToSqlSegment(val, hasAlias ||
entityClass != LambdaUtils.getEntityClass(val))));
}
/**
@ -417,6 +407,7 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
* @param params 参数
* @return sql片段
*/
@SuppressWarnings("SameParameterValue")
protected final String formatSqlMaybeWithParam(String sqlStr, String mapping, Object... params) {
if (StringUtils.isBlank(sqlStr)) {
// todo 何时会这样?
@ -572,6 +563,10 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
return () -> columnToString(column);
}
protected final <X> ISqlSegment columnToSqlSegment(SFunction<X, ?> column, boolean hasAlias) {
return () -> columnToString(column, hasAlias);
}
/**
* 获取 columnName
*/
@ -579,6 +574,10 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
return (String) column;
}
protected <X> String columnToString(X column, boolean hasAlias) {
return (String) column;
}
/**
* 多字段转换为逗号 "," 分割字符串
*
@ -634,36 +633,4 @@ public abstract class MPJAbstractWrapper<T, Children extends MPJAbstractWrapper<
public <R, S> Children le(boolean condition, SFunction<R, ?> column, SFunction<S, ?> val) {
return addCondition(condition, column, LE, val);
}
@Override
public <R, S, U> Children between(boolean condition, SFunction<R, ?> column, SFunction<S, ?> val1, SFunction<U, ?> val2) {
return maybeDo(condition, () -> appendSqlSegments(columnToSqlSegment(column), BETWEEN,
columnToSqlSegment(val1), AND, columnToSqlSegment(val2)));
}
public <R, S> Children between(boolean condition, SFunction<R, ?> column, Object val1, SFunction<S, ?> val2) {
return maybeDo(condition, () -> appendSqlSegments(columnToSqlSegment(column), BETWEEN,
() -> formatParam(null, val1), AND, columnToSqlSegment(val2)));
}
public <R, S> Children between(boolean condition, SFunction<R, ?> column, SFunction<S, ?> val1, Object val2) {
return maybeDo(condition, () -> appendSqlSegments(columnToSqlSegment(column), BETWEEN,
columnToSqlSegment(val1), AND, () -> formatParam(null, val2)));
}
@Override
public <R, S, U> Children notBetween(boolean condition, SFunction<R, ?> column, SFunction<S, ?> val1, SFunction<U, ?> val2) {
return maybeDo(condition, () -> appendSqlSegments(columnToSqlSegment(column), NOT_BETWEEN,
columnToSqlSegment(val1), AND, columnToSqlSegment(val2)));
}
public <R, U> Children notBetween(boolean condition, SFunction<R, ?> column, Object val1, SFunction<U, ?> val2) {
return maybeDo(condition, () -> appendSqlSegments(columnToSqlSegment(column), NOT_BETWEEN,
() -> formatParam(null, val1), AND, columnToSqlSegment(val2)));
}
public <R, S> Children notBetween(boolean condition, SFunction<R, ?> column, SFunction<S, ?> val1, Object val2) {
return maybeDo(condition, () -> appendSqlSegments(columnToSqlSegment(column), NOT_BETWEEN,
columnToSqlSegment(val1), AND, () -> formatParam(null, val2)));
}
}

180
src/main/java/com/github/yulichang/wrapper/MPJLambdaWrapper.java
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@ -2,10 +2,7 @@ package com.github.yulichang.wrapper;
import com.baomidou.mybatisplus.core.conditions.SharedString;
import com.baomidou.mybatisplus.core.conditions.segments.MergeSegments;
import com.baomidou.mybatisplus.core.metadata.MPJTableInfoHelper;
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.metadata.*;
import com.baomidou.mybatisplus.core.toolkit.*;
import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.github.yulichang.toolkit.Constant;
@ -14,13 +11,10 @@ import com.github.yulichang.wrapper.enums.BaseFuncEnum;
import com.github.yulichang.wrapper.interfaces.LambdaJoin;
import com.github.yulichang.wrapper.interfaces.Query;
import com.github.yulichang.wrapper.interfaces.on.OnFunction;
import lombok.Data;
import lombok.Getter;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Predicate;
import java.util.stream.Collectors;
@ -34,14 +28,14 @@ import java.util.stream.Collectors;
* @author yulichang
* @see com.github.yulichang.toolkit.Wrappers
*/
@SuppressWarnings("all")
@SuppressWarnings("unused")
public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWrapper<T>>
implements Query<MPJLambdaWrapper<T>>, LambdaJoin<MPJLambdaWrapper<T>> {
/**
* 查询字段 sql
*/
private SharedString sqlSelect = new SharedString();
private final SharedString sqlSelect = new SharedString();
/**
* 查询表
@ -51,34 +45,23 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
/**
* 查询的字段
*/
private final List<SelectColumn> selectColumns = new ArrayList<>();
private final List<String> selectColumns = new ArrayList<>();
/**
* 忽略查询的字段
*/
private final List<SelectColumn> ignoreColumns = new ArrayList<>();
private final List<String> ignoreColumns = new ArrayList<>();
/**
* ON sql wrapper集合
*/
private final List<MPJLambdaWrapper<?>> onWrappers = new ArrayList<>();
/**
* 连表关键字 on 条件 func 使用
*/
@Getter
private String keyWord;
/**
* 连表实体类 on 条件 func 使用
*/
@Getter
private Class<?> joinClass;
private final List<String> joinSql = new ArrayList<>();
/**
* 不建议直接 new 该实例，使用 Wrappers.lambdaQuery()
*/
public MPJLambdaWrapper() {
this.hasAlias = true;
super.initNeed();
}
@ -86,21 +69,27 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
/**
* 不建议直接 new 该实例，使用 Wrappers.lambdaQuery(...)
*/
MPJLambdaWrapper(T entity, Class<T> entityClass, SharedString sqlSelect, AtomicInteger paramNameSeq,
MPJLambdaWrapper(Class<?> entityClass, AtomicInteger paramNameSeq,
Map<String, Object> paramNameValuePairs, MergeSegments mergeSegments,
SharedString lastSql, SharedString sqlComment, SharedString sqlFirst,
String keyWord, Class<?> joinClass) {
super.setEntity(entity);
super.setEntityClass(entityClass);
SharedString lastSql, SharedString sqlComment, SharedString sqlFirst, boolean hasAlias) {
this.entityClass =entityClass;
this.paramNameSeq = paramNameSeq;
this.paramNameValuePairs = paramNameValuePairs;
this.expression = mergeSegments;
this.sqlSelect = sqlSelect;
this.lastSql = lastSql;
this.sqlComment = sqlComment;
this.sqlFirst = sqlFirst;
this.keyWord = keyWord;
this.joinClass = joinClass;
this.hasAlias = hasAlias;
}
@Override
protected MPJLambdaWrapper<T> instance() {
return instance(true, null);
}
protected MPJLambdaWrapper<T> instance(boolean hasAlias, Class<?> entityClass) {
return new MPJLambdaWrapper<>(entityClass, paramNameSeq, paramNameValuePairs, new MergeSegments(),
SharedString.emptyString(), SharedString.emptyString(), SharedString.emptyString(), hasAlias);
}
@Override
@ -108,7 +97,7 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
public final <S> MPJLambdaWrapper<T> select(SFunction<S, ?>... columns) {
if (ArrayUtils.isNotEmpty(columns)) {
for (SFunction<S, ?> s : columns) {
selectColumns.add(SelectColumn.of(LambdaUtils.getEntityClass(s), getCache(s).getColumn()));
selectColumns.add(getThisAlias(s) + getCache(s).getColumn());
}
}
return typedThis;
@ -118,20 +107,23 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
public <E> MPJLambdaWrapper<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(SelectColumn.of(entityClass, i.getColumn())));
MPJTableInfo tableInfo = MPJTableInfoHelper.getTableInfo(entityClass);
info.getFieldList().stream().filter(predicate).collect(Collectors.toList()).forEach(i ->
selectColumns.add((hasAlias ? tableInfo.getAliasDOT() : StringPool.EMPTY) + i.getColumn()));
return typedThis;
}
@Override
public <S> MPJLambdaWrapper<T> selectAs(SFunction<S, ?> column, String alias) {
selectColumns.add(SelectColumn.of(LambdaUtils.getEntityClass(column), getCache(column).getColumn(), alias));
selectColumns.add(getThisAlias(column) + getCache(column).getColumn() + Constants.AS + alias);
return typedThis;
}
public <S> MPJLambdaWrapper<T> selectFunc(boolean condition, BaseFuncEnum funcEnum, SFunction<S, ?> column, String alias) {
public <S> MPJLambdaWrapper<T> selectFunc(boolean condition, BaseFuncEnum funcEnum, SFunction<S, ?> column,
String alias) {
if (condition) {
selectColumns.add(SelectColumn.of(LambdaUtils.getEntityClass(column), getCache(column).getColumn(), alias, funcEnum));
selectColumns.add(String.format(funcEnum.getSql(), getThisAlias(column) + getCache(column).getColumn())
+ Constants.AS + alias);
}
return typedThis;
}
@ -139,7 +131,7 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
@Override
public MPJLambdaWrapper<T> selectFunc(boolean condition, BaseFuncEnum funcEnum, Object column, String alias) {
if (condition) {
selectColumns.add(SelectColumn.of(null, column.toString(), alias, funcEnum));
selectColumns.add(String.format(funcEnum.getSql(), column.toString()) + Constants.AS + alias);
}
return typedThis;
}
@ -147,11 +139,12 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
public final MPJLambdaWrapper<T> selectAll(Class<?> clazz) {
TableInfo info = TableInfoHelper.getTableInfo(clazz);
Assert.notNull(info, "table can not be find -> %s", clazz);
String dot = hasAlias ? MPJTableInfoHelper.getTableInfo(clazz).getAliasDOT() : StringPool.EMPTY;
if (info.havePK()) {
selectColumns.add(SelectColumn.of(clazz, info.getKeyColumn()));
selectColumns.add(dot + info.getKeyColumn());
}
info.getFieldList().stream().filter(TableFieldInfo::isSelect).forEach(c ->
selectColumns.add(SelectColumn.of(clazz, c.getColumn())));
selectColumns.add(dot + c.getColumn()));
return typedThis;
}
@ -160,12 +153,21 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
public final <S> MPJLambdaWrapper<T> selectIgnore(SFunction<S, ?>... columns) {
if (ArrayUtils.isNotEmpty(columns)) {
for (SFunction<S, ?> s : columns) {
ignoreColumns.add(SelectColumn.of(LambdaUtils.getEntityClass(s), getCache(s).getColumn()));
ignoreColumns.add(getThisAlias(s) + getCache(s).getColumn());
}
}
return typedThis;
}
@Override
public MPJLambdaWrapper<T> selectQuery(Class<?> clazz, OnFunction function, String alias) {
MPJLambdaWrapper<?> apply = function.apply(instance(false, clazz));
selectColumns.add(String.format("(SELECT %s FROM %s %s)", apply.getSqlSelect(),
TableInfoHelper.getTableInfo(clazz).getTableName(), apply.getCustomSqlSegment()) + Constants.AS + alias);
return this;
}
/**
* 查询条件 SQL 片段
*/
@ -173,15 +175,9 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
public String getSqlSelect() {
if (StringUtils.isBlank(sqlSelect.getStringValue())) {
if (CollectionUtils.isNotEmpty(ignoreColumns)) {
selectColumns.removeIf(c -> c.getFuncEnum() == null && ignoreColumns.stream().anyMatch(i ->
i.getClazz() == c.getClazz() && Objects.equals(c.getColumnName(), i.getColumnName())));
selectColumns.removeIf(ignoreColumns::contains);
}
String s = selectColumns.stream().map(i -> {
String str = MPJTableInfoHelper.getTableInfo(i.getClazz()).getAlias() + StringPool.DOT + i.getColumnName();
return (i.getFuncEnum() == null ? str : String.format(i.getFuncEnum().getSql(), str)) +
(StringUtils.isBlank(i.getAlias()) ? StringPool.EMPTY : (Constant.AS + i.getAlias()));
}).collect(Collectors.joining(StringPool.COMMA));
sqlSelect.setStringValue(s);
sqlSelect.setStringValue(String.join(StringPool.COMMA, selectColumns));
}
return sqlSelect.getStringValue();
}
@ -191,17 +187,7 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
*/
public String getFrom() {
if (StringUtils.isBlank(from.getStringValue())) {
StringBuilder value = new StringBuilder();
for (MPJLambdaWrapper<?> wrapper : onWrappers) {
String tableName = TableInfoHelper.getTableInfo(wrapper.getJoinClass()).getTableName();
value.append(wrapper.getKeyWord())
.append(tableName)
.append(Constants.SPACE)
.append(MPJTableInfoHelper.getTableInfo(wrapper.getJoinClass()).getAlias())
.append(Constant.ON)
.append(wrapper.getExpression().getNormal().getSqlSegment());
}
from.setStringValue(value.toString());
from.setStringValue(String.join(StringPool.SPACE, joinSql));
}
return from.getStringValue();
}
@ -210,20 +196,6 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
return true;
}
/**
* 用于生成嵌套 sql
* <p>故 sqlSelect 不向下传递</p>
*/
@Override
protected MPJLambdaWrapper<T> instance() {
return instance(null, null);
}
protected MPJLambdaWrapper<T> instance(String keyWord, Class<?> joinClass) {
return new MPJLambdaWrapper<>(getEntity(), getEntityClass(), null, paramNameSeq, paramNameValuePairs,
new MergeSegments(), SharedString.emptyString(), SharedString.emptyString(), SharedString.emptyString(),
keyWord, joinClass);
}
@Override
public void clear() {
@ -232,65 +204,21 @@ public class MPJLambdaWrapper<T> extends MPJAbstractLambdaWrapper<T, MPJLambdaWr
from.toNull();
selectColumns.clear();
ignoreColumns.clear();
joinSql.clear();
}
@Override
public <R> MPJLambdaWrapper<T> join(String keyWord, boolean condition, Class<R> clazz, OnFunction function) {
if (condition) {
MPJLambdaWrapper<?> apply = function.apply(instance(keyWord, clazz));
onWrappers.add(apply);
joinSql.add(keyWord + TableInfoHelper.getTableInfo(clazz).getTableName() +
Constants.SPACE + MPJTableInfoHelper.getTableInfo(clazz).getAlias() +
Constant.ON + function.apply(instance()).getExpression().getNormal().getSqlSegment());
}
return typedThis;
}
/**
* select字段
*/
@Data
public static class SelectColumn {
/**
* 字段实体类
*/
private Class<?> clazz;
/**
* 数据库字段名
*/
private String columnName;
/**
* 字段别名
*/
private String alias;
/**
* 字段函数
*/
private BaseFuncEnum funcEnum;
/**
* 自定义函数填充参数
*/
private List<SFunction<?, ?>> funcArgs;
private SelectColumn(Class<?> clazz, String columnName, String alias, BaseFuncEnum funcEnum) {
this.clazz = clazz;
this.columnName = columnName;
this.alias = alias;
this.funcEnum = funcEnum;
}
public static SelectColumn of(Class<?> clazz, String columnName) {
return new SelectColumn(clazz, columnName, null, null);
}
public static SelectColumn of(Class<?> clazz, String columnName, String alias) {
return new SelectColumn(clazz, columnName, alias, null);
}
public static SelectColumn of(Class<?> clazz, String columnName, String alias, BaseFuncEnum funcEnum) {
return new SelectColumn(clazz, columnName, alias, funcEnum);
}
private String getThisAlias(SFunction<?, ?> function) {
return hasAlias ? MPJTableInfoHelper.getTableInfo(LambdaUtils.getEntityClass(function)).getAliasDOT() :
StringPool.EMPTY;
}
}

17
src/main/java/com/github/yulichang/wrapper/interfaces/Query.java
View File

@ -5,6 +5,7 @@ import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
import com.github.yulichang.toolkit.LambdaUtils;
import com.github.yulichang.wrapper.enums.BaseFuncEnum;
import com.github.yulichang.wrapper.enums.DefaultFuncEnum;
import com.github.yulichang.wrapper.interfaces.on.OnFunction;
import java.io.Serializable;
import java.util.function.Predicate;
@ -51,6 +52,22 @@ public interface Query<Children> extends Serializable {
*/
<S> Children selectAs(SFunction<S, ?> column, String alias);
/**
* 子查询
*
* @param clazz 查询的类
* @param function 查询lambda
* @param alias 别名
*/
Children selectQuery(Class<?> clazz, OnFunction function, String alias);
/**
* ignore
*/
default <S> Children selectQuery(Class<?> clazz, OnFunction function, SFunction<S, ?> alias) {
return selectQuery(clazz, function, LambdaUtils.getName(alias));
}
/**
* 聚合函数查询
*

37
src/main/java/com/github/yulichang/wrapper/interfaces/on/OnCompare.java
View File

@ -12,6 +12,7 @@ import java.io.Serializable;
*
* @since 1.1.8
*/
@SuppressWarnings("unused")
public interface OnCompare<Children> extends Serializable {
/**
* ignore
@ -114,40 +115,4 @@ public interface OnCompare<Children> extends Serializable {
* @return children
*/
<R, S> Children le(boolean condition, SFunction<R, ?> column, SFunction<S, ?> val);
/**
* ignore
*/
default <R, S, T> Children between(SFunction<R, ?> column, SFunction<S, ?> val1, SFunction<T, ?> 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, S, T> Children between(boolean condition, SFunction<R, ?> column, SFunction<S, ?> val1, SFunction<T, ?> val2);
/**
* ignore
*/
default <R, S, T> Children notBetween(SFunction<R, ?> column, SFunction<S, ?> val1, SFunction<T, ?> 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, S, T> Children notBetween(boolean condition, SFunction<R, ?> column, SFunction<S, ?> val1, SFunction<T, ?> val2);
}