增加一个InsertUseGeneratedKeysMapper

abel533 · abel533 · commit c1ef4180ad27 · 2015-06-04T00:56:29.000+08:00
diff --git a/src/main/java/com/github/abel533/mapper/MySqlMapper.java b/src/main/java/com/github/abel533/mapper/MySqlMapper.java
@@ -25,13 +25,16 @@
 package com.github.abel533.mapper;
 
 import com.github.abel533.mapper.special.InsertListMapper;
+import com.github.abel533.mapper.special.InsertUseGeneratedKeysMapper;
 
 /**
  * 通用Mapper接口,MySql独有的通用方法
  *
  * @param <T> 不能为空
  * @author liuzh
  */
-public interface MySqlMapper<T> extends InsertListMapper<T> {
+public interface MySqlMapper<T> extends
+        InsertListMapper<T>,
+        InsertUseGeneratedKeysMapper<T> {
 
 }
diff --git a/src/main/java/com/github/abel533/mapper/special/InsertUseGeneratedKeysMapper.java b/src/main/java/com/github/abel533/mapper/special/InsertUseGeneratedKeysMapper.java
@@ -0,0 +1,64 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 abel533@gmail.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package com.github.abel533.mapper.special;
+
+import com.github.abel533.provider.SpecialProvider;
+import org.apache.ibatis.annotations.InsertProvider;
+import org.apache.ibatis.annotations.Options;
+
+/**
+ * 通用Mapper接口,特殊方法，批量插入，支持批量插入的数据库都可以使用，例如mysql,h2等
+ *
+ * @param <T> 不能为空
+ * @author liuzh
+ */
+public interface InsertUseGeneratedKeysMapper<T> {
+
+    /**
+     * 插入，支持数据库自增字段必须是id，支持回写
+     *
+     * @param record
+     * @return
+     */
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    @InsertProvider(type = SpecialProvider.class, method = "dynamicSQL")
+    int InsertUseGeneratedKeysMapper(T record);
+
+    /**
+     * ======如果主键不是id怎么用？==========
+     * 假设主键的属性名是uid,那么新建一个Mapper接口如下
+     * <pre>
+        public interface InsertUidMapper<T> {
+            @Options(useGeneratedKeys = true, keyProperty = "id")
+            @InsertProvider(type = SpecialProvider.class, method = "dynamicSQL")
+            int InsertUseGeneratedKeysMapper(T record);
+        }
+     * 只要修改keyProperty = "uid"就可以
+     *
+     * 然后让你自己的Mapper继承InsertUidListMapper<T>即可
+     *
+     * </pre>
+     */
+}
diff --git a/src/main/java/com/github/abel533/provider/SpecialProvider.java b/src/main/java/com/github/abel533/provider/SpecialProvider.java
@@ -76,4 +76,38 @@ public String insertList(MappedStatement ms) {
         sql.append("</foreach>");
         return sql.toString();
     }
+
+    /**
+     * 插入，主键id，自增
+     *
+     * @param ms
+     */
+    public String InsertUseGeneratedKeysMapper(MappedStatement ms) {
+        final Class<?> entityClass = getSelectReturnType(ms);
+        EntityHelper.EntityTable table = EntityHelper.getEntityTable(entityClass);
+        //开始拼sql
+        StringBuilder sql = new StringBuilder();
+        sql.append("insert into ");
+        sql.append(table.getName());
+        sql.append("(");
+        boolean first = true;
+        for (EntityHelper.EntityColumn column : table.getEntityClassColumns()) {
+            if(!first) {
+                sql.append(",");
+            }
+            sql.append(column.getColumn());
+            first = false;
+        }
+        sql.append(") values(");
+        first = true;
+        for (EntityHelper.EntityColumn column : table.getEntityClassColumns()) {
+            if(!first) {
+                sql.append(",");
+            }
+            sql.append("#{").append(column.getProperty()).append("}");
+            first = false;
+        }
+        sql.append(")");
+        return sql.toString();
+    }
 }
