wx

src/main/java/com/github/yulichang/common/support/alias/AliasLambdaQueryWrapper.java

@@ -1,23 +1,15 @@
 package com.github.yulichang.common.support.alias;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
-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.CollectionUtils;
 import com.baomidou.mybatisplus.core.toolkit.StringPool;
 import com.baomidou.mybatisplus.core.toolkit.StringUtils;
 import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
 
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.stream.Collectors;
-
 /**
  * 字段添加别名
  * 使用方法:
  * <p>
- * select ${ew.aliasColumn("table","t")} from table t ${ew.customSqlSegment("t")}
+ * select t.id,t.sex from table t ${ew.customSqlSegment("t")}
  * </p>
  * 对应sql
  * <p>
@@ -31,12 +23,6 @@ import java.util.stream.Collectors;
  * @author yulichang
  */
 public class AliasLambdaQueryWrapper<T> extends LambdaQueryWrapper<T> {
-
-    /**
-     * 别名查询字段缓存
-     */
-    private static final Map<Class<?>, Map<String, String>> ALIAS_COLUMN_CACHE = new ConcurrentHashMap<>();
-
     /**
      * 字段别名
      */
@@ -58,43 +44,4 @@ public class AliasLambdaQueryWrapper<T> extends LambdaQueryWrapper<T> {
         this.alias = alias;
         return super.getCustomSqlSegment();
     }
-
-    /**
-     * ew.customSqlSegment("table_name", "t")
-     *
-     * @param tableName 数据库表名
-     * @param alias     别名
-     */
-    public String aliasColumn(String tableName, String alias) {
-        TableInfo tableInfo = TableInfoHelper.getTableInfo(tableName);
-        Assert.notNull(tableInfo, "未找到对应的表 -> %s", tableName);
-        Assert.isTrue(StringUtils.isNotBlank(alias), "别名不能为空");
-
-        this.alias = alias;
-        Map<String, String> aliasMap = ALIAS_COLUMN_CACHE.get(tableInfo.getEntityType());
-        if (CollectionUtils.isEmpty(aliasMap)) {
-            aliasMap = new ConcurrentHashMap<>();
-            String s = concat(tableInfo, alias);
-            aliasMap.put(alias, s);
-            ALIAS_COLUMN_CACHE.put(tableInfo.getEntityType(), aliasMap);
-            return s;
-        } else {
-            if (!aliasMap.containsKey(alias)) {
-                String s = concat(tableInfo, alias);
-                aliasMap.put(alias, s);
-                return s;
-            } else {
-                return aliasMap.get(alias);
-            }
-        }
-    }
-
-    private String concat(TableInfo tableInfo, String alias) {
-        String s = tableInfo.getFieldList().stream().map(
-                i -> alias + StringPool.DOT + i.getColumn()).collect(Collectors.joining(StringPool.COMMA));
-        if (tableInfo.havePK()) {
-            s = alias + StringPool.DOT + tableInfo.getKeyColumn() + StringPool.COMMA + s;
-        }
-        return s;
-    }
 }