代码生成：支持设置主子表的信息

yudao-framework/yudao-common/src/main/java/cn/iocoder/yudao/framework/common/util/collection/CollectionUtils.java

@@ -238,7 +238,7 @@ public class CollectionUtils {
         if (CollUtil.isEmpty(from)) {
             return null;
         }
-        assert from.size() > 0; // 断言，避免告警
+        assert !from.isEmpty(); // 断言，避免告警
         T t = from.stream().max(Comparator.comparing(valueFunc)).get();
         return valueFunc.apply(t);
     }

yudao-framework/yudao-spring-boot-starter-mybatis/src/main/java/cn/iocoder/yudao/framework/mybatis/core/mapper/BaseMapperX.java

@@ -93,10 +93,15 @@ public interface BaseMapperX<T> extends MPJBaseMapper<T> {
         return selectList(new LambdaQueryWrapper<T>().in(field, values));
     }
 
+    @Deprecated
     default List<T> selectList(SFunction<T, ?> leField, SFunction<T, ?> geField, Object value) {
         return selectList(new LambdaQueryWrapper<T>().le(leField, value).ge(geField, value));
     }
 
+    default List<T> selectList(SFunction<T, ?> field1, Object value1, SFunction<T, ?> field2, Object value2) {
+        return selectList(new LambdaQueryWrapper<T>().eq(field1, value1).eq(field2, value2));
+    }
+
     /**
      * 批量插入，适合大量数据插入
      *

yudao-module-infra/yudao-module-infra-api/src/main/java/cn/iocoder/yudao/module/infra/enums/ErrorCodeConstants.java

@@ -44,6 +44,8 @@ public interface ErrorCodeConstants {
     ErrorCode CODEGEN_TABLE_INFO_COLUMN_COMMENT_IS_NULL = new ErrorCode(1_003_001_009, "数据库的表字段({})注释未填写");
     ErrorCode CODEGEN_MASTER_TABLE_NOT_EXISTS = new ErrorCode(1_003_001_010, "主表(id={})定义不存在，请检查");
     ErrorCode CODEGEN_SUB_COLUMN_NOT_EXISTS = new ErrorCode(1_003_001_011, "子表的字段(id={})不存在，请检查");
+    ErrorCode CODEGEN_MASTER_GENERATION_FAIL_NO_SUB_TABLE = new ErrorCode(1_003_001_012, "主表生成代码失败，原因：它没有子表");
+    ErrorCode CODEGEN_MASTER_GENERATION_FAIL_NO_SUB_COLUMN = new ErrorCode(1_003_001_013, "主表生成代码失败，原因：它的子表({})没有字段");
 
     // ========== 文件配置 1-001-006-000 ==========
     ErrorCode FILE_CONFIG_NOT_EXISTS = new ErrorCode(1_001_006_000, "文件配置不存在");

yudao-module-infra/yudao-module-infra-biz/src/main/java/cn/iocoder/yudao/module/infra/dal/mysql/codegen/CodegenTableMapper.java

@@ -29,4 +29,9 @@ public interface CodegenTableMapper extends BaseMapperX<CodegenTableDO> {
         return selectList(CodegenTableDO::getDataSourceConfigId, dataSourceConfigId);
     }
 
+    default List<CodegenTableDO> selectListByTemplateTypeAndMasterTableId(Integer templateType, Long masterTableId) {
+        return selectList(CodegenTableDO::getTemplateType, templateType,
+                CodegenTableDO::getMasterTableId, masterTableId);
+    }
+
 }

yudao-module-infra/yudao-module-infra-biz/src/main/java/cn/iocoder/yudao/module/infra/service/codegen/CodegenServiceImpl.java

@@ -252,13 +252,25 @@ public class CodegenServiceImpl implements CodegenService {
         List<CodegenTableDO> subTables = null;
         List<List<CodegenColumnDO>> subColumnsList = null;
         if (CodegenTemplateTypeEnum.isMaster(table.getTemplateType())) {
-            subTables = codegenTableMapper.selectListByMasterTableId(tableId);
-            subTable = codegenTableMapper.selectById(table.getMasterTableId());
-            subColumns = codegenColumnMapper.selectListByTableId(table.getMasterTableId());
+            // 校验子表存在
+            subTables = codegenTableMapper.selectListByTemplateTypeAndMasterTableId(
+                    CodegenTemplateTypeEnum.SUB.getType(), tableId);
+            if (CollUtil.isEmpty(subTables)) {
+                throw exception(CODEGEN_MASTER_GENERATION_FAIL_NO_SUB_TABLE);
+            }
+            // 校验子表的关联字段存在
+            subColumnsList = new ArrayList<>();
+            for (CodegenTableDO subTable : subTables) {
+                List<CodegenColumnDO> subColumns = codegenColumnMapper.selectListByTableId(subTable.getId());
+                if (CollUtil.findOne(subColumns, column -> column.getId().equals(subTable.getSubJoinColumnId())) == null) {
+                    throw exception(CODEGEN_SUB_COLUMN_NOT_EXISTS, subTable.getId());
+                }
+                subColumnsList.add(subColumns);
+            }
         }
 
         // 执行生成
-        return codegenEngine.execute(table, columns, subTable, subColumns);
+        return codegenEngine.execute(table, columns, subTables, subColumnsList);
     }
 
     @Override