https://github.com/yulichang/mybatis-plus-join/issues/120

mybatis-plus-join-core/src/main/java/com/github/yulichang/method/MPJBaseMethod.java

@@ -107,7 +107,7 @@ public interface MPJBaseMethod extends Constants {
             return filedSqlScript;
         }
         String newKeyProperty = newPrefix + tableInfo.getKeyProperty();
-        String keySqlScript = ConfigProperties.tableAlias + DOT + tableInfo.getKeyColumn() + EQUALS +
+        String keySqlScript = "${ew.alias}" + DOT + tableInfo.getKeyColumn() + EQUALS +
                 SqlScriptUtils.safeParam(newKeyProperty);
         return SqlScriptUtils.convertIf(keySqlScript, String.format("%s != null", newKeyProperty), false)
                 + NEWLINE + filedSqlScript;
@@ -116,7 +116,7 @@ public interface MPJBaseMethod extends Constants {
     default String getSqlWhere(TableFieldInfo tableFieldInfo, final String prefix) {
         final String newPrefix = prefix == null ? EMPTY : prefix;
         // 默认:  AND column=#{prefix + el}
-        String sqlScript = " AND " + String.format(tableFieldInfo.getCondition(), ConfigProperties.tableAlias + DOT +
+        String sqlScript = " AND " + String.format(tableFieldInfo.getCondition(), "${ew.alias}" + DOT +
                 tableFieldInfo.getColumn(), newPrefix + tableFieldInfo.getEl());
         // 查询的时候只判非空
         return convertIf(tableFieldInfo, sqlScript, convertIfProperty(newPrefix, tableFieldInfo.getProperty()),

mybatis-plus-join-core/src/main/java/com/github/yulichang/toolkit/SqlHelper.java

@@ -1,6 +1,5 @@
 package com.github.yulichang.toolkit;
 
-import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.baomidou.mybatisplus.core.toolkit.Assert;
 import com.github.yulichang.base.MPJBaseMapper;
 
@@ -12,17 +11,10 @@ import java.util.function.Function;
  * @since 1.4.4
  */
 @SuppressWarnings("unchecked")
-public class SqlHelper {
+public final class SqlHelper {
 
-    public static <R, T> R exec(Class<T> entityClass, Function<BaseMapper<T>, R> function) {
+    public static <R, T> R exec(Class<T> entityClass, Function<MPJBaseMapper<T>, R> function) {
-        Assert.notNull(entityClass,"请使用 new MPJLambdaWrapper(主表.class) 或 JoinWrappers.lambda(主表.class) 构造方法");
+        Assert.notNull(entityClass, "请使用 new MPJLambdaWrapper(主表.class) 或 JoinWrappers.lambda(主表.class) 构造方法");
-        Object mapper = SpringContentUtils.getMapper(entityClass);
-        Assert.notNull(mapper, "mapper not init <%s>", entityClass.getSimpleName());
-        return function.apply((BaseMapper<T>) mapper);
-    }
-
-    public static <R, T> R execJoin(Class<T> entityClass, Function<MPJBaseMapper<T>, R> function) {
-        Assert.notNull(entityClass,"请使用 new MPJLambdaWrapper(主表.class) 或 JoinWrappers.lambda(主表.class) 构造方法");
         Object mapper = SpringContentUtils.getMapper(entityClass);
         Assert.notNull(mapper, "mapper not init <%s>", entityClass.getSimpleName());
         Assert.isTrue(mapper instanceof MPJBaseMapper, "mapper <%s> not extends MPJBaseMapper ", entityClass.getSimpleName());

mybatis-plus-join-core/src/main/java/com/github/yulichang/wrapper/interfaces/Chain.java

@@ -1,10 +1,6 @@
 package com.github.yulichang.wrapper.interfaces;
 
-import com.baomidou.mybatisplus.core.conditions.Wrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
-import com.baomidou.mybatisplus.core.toolkit.Assert;
-import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
-import com.github.yulichang.base.MPJBaseMapper;
 import com.github.yulichang.interfaces.MPJBaseJoin;
 import com.github.yulichang.toolkit.SqlHelper;
 
@@ -33,10 +29,7 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default Long count() {
-        return SqlHelper.exec(getEntityClass(), mapper -> {
+        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectJoinCount((MPJBaseJoin<T>) this));
-            Assert.isTrue(mapper instanceof MPJBaseMapper, "mapper <%s> is not extends MPJBaseMapper", mapper.getClass().getSimpleName());
-            return ((MPJBaseMapper<T>) mapper).selectJoinCount((MPJBaseJoin<T>) this);
-        });
     }
 
     /**
@@ -47,7 +40,7 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default T one() {
-        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectOne((Wrapper<T>) this));
+        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectJoinOne(getEntityClass(), (MPJBaseJoin<T>) this));
     }
 
     /**
@@ -58,7 +51,7 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default <R> R one(Class<R> resultType) {
-        return SqlHelper.execJoin(getEntityClass(), mapper -> mapper.selectJoinOne(resultType, (MPJBaseJoin<T>) this));
+        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectJoinOne(resultType, (MPJBaseJoin<T>) this));
     }
 
     /**
@@ -69,8 +62,7 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default T first() {
-        List<T> list = list();
+        return list().stream().findFirst().orElse(null);
-        return CollectionUtils.isEmpty(list) ? null : list.get(0);
     }
 
     /**
@@ -81,8 +73,7 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default <R> R first(Class<R> resultType) {
-        List<R> list = list(resultType);
+        return list(resultType).stream().findFirst().orElse(null);
-        return CollectionUtils.isEmpty(list) ? null : list.get(0);
     }
 
     /**
@@ -92,7 +83,7 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default List<T> list() {
-        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectList((Wrapper<T>) this));
+        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectJoinList(getEntityClass(), (MPJBaseJoin<T>) this));
     }
 
     /**
@@ -102,7 +93,7 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default <R> List<R> list(Class<R> resultType) {
-        return SqlHelper.execJoin(getEntityClass(), mapper -> mapper.selectJoinList(resultType, (MPJBaseJoin<T>) this));
+        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectJoinList(resultType, (MPJBaseJoin<T>) this));
     }
 
     /**
@@ -112,7 +103,7 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default <P extends IPage<T>> P page(P page) {
-        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectPage(page, (Wrapper<T>) this));
+        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectJoinPage(page, getEntityClass(), (MPJBaseJoin<T>) this));
     }
 
     /**
@@ -122,6 +113,6 @@ public interface Chain<T> {
      * JoinWrappers.lambda(User.class)<br />
      */
     default <R, P extends IPage<R>> P page(P page, Class<R> resultType) {
-        return SqlHelper.execJoin(getEntityClass(), mapper -> mapper.selectJoinPage(page, resultType, (MPJBaseJoin<T>) this));
+        return SqlHelper.exec(getEntityClass(), mapper -> mapper.selectJoinPage(page, resultType, (MPJBaseJoin<T>) this));
     }
 }

mybatis-plus-join-test/test-join/src/test/java/com/github/yulichang/test/join/m/TableAliasTest.java

@@ -84,4 +84,14 @@ public class TableAliasTest {
         List<UserDO> dos = userMapper.selectJoinList(UserDO.class, wrapper);
         dos.forEach(System.out::println);
     }
+
+    @Test
+    void tableAlias3() {
+        ThreadLocalUtils.set("SELECT aaa.id, aaa.pid, aaa.`name`, aaa.`json`, aaa.sex, aaa.head_img, aaa.create_time, " +
+                "aaa.address_id, aaa.address_id2, aaa.del, aaa.create_by, aaa.update_by FROM `user` aaa WHERE aaa.`name` = ? AND aaa.del = false");
+        UserDO userDO = new UserDO();
+        userDO.setName("aaa");
+        MPJLambdaWrapper<UserDO> wrapper = JoinWrappers.lambda("aaa", userDO);
+        wrapper.list();
+    }
 }

pom.xml

@@ -62,20 +62,20 @@
             <dependency>
                 <groupId>org.springframework</groupId>
                 <artifactId>spring-aop</artifactId>
-                <version>5.3.30</version>
+                <version>5.3.32</version>
                 <scope>provided</scope>
             </dependency>
             <dependency>
                 <groupId>org.jetbrains.kotlin</groupId>
                 <artifactId>kotlin-stdlib-jdk8</artifactId>
-                <version>1.9.0</version>
+                <version>1.9.22</version>
                 <scope>provided</scope>
             </dependency>
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-configuration-processor</artifactId>
                 <optional>true</optional>
-                <version>2.7.17</version>
+                <version>2.7.18</version>
             </dependency>
         </dependencies>
     </dependencyManagement>
@@ -87,7 +87,6 @@
                 <artifactId>flatten-maven-plugin</artifactId>
                 <version>1.5.0</version>
                 <configuration>
-                    <!-- 是否更新pom文件，此处还有更高级的用法 -->
                     <updatePomFile>true</updatePomFile>
                     <flattenMode>resolveCiFriendliesOnly</flattenMode>
                 </configuration>