com.gitee.sunchenbin.mybatis.actable.mapping.system.CreateMysqlTablesMapper.xml Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of mybatis-enhance-actable Show documentation
A.CTable is a Maven project based on Spring and Mybatis, which enhances the function of Mybatis
There is a newer version: 1.5.0.RELEASE
Show newest version
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.gitee.sunchenbin.mybatis.actable.dao.system.CreateMysqlTablesMapper">

	<!-- 抽取出来的公共部分 -->
	<sql id="commonSql">
		<if test="fields.fileTypeLength == 0">
			`${fields.fieldName}` ${fields.fieldType} 
		</if>
		<if test="fields.fileTypeLength == 1">
			`${fields.fieldName}` ${fields.fieldType}(${fields.fieldLength}) 
		</if>
		<if test="fields.fileTypeLength == 2">
			`${fields.fieldName}`
			${fields.fieldType}(${fields.fieldLength},${fields.fieldDecimalLength}) 
		</if>
		<if test="fields.fieldIsNull">
			NULL 
		</if>
		<if test="!fields.fieldIsNull">
			NOT NULL 
		</if>
		<if test="fields.fieldIsAutoIncrement">
			AUTO_INCREMENT 
		</if>
		<!-- 不是自增长的才能有默认值 -->
		<!-- 并且不为null时，因为null是默认的没必要写 -->
		<if test="!fields.fieldIsAutoIncrement and !fields.fieldIsNull and fields.fieldDefaultValue != 'NULL'">
			DEFAULT #{fields.fieldDefaultValue} 
		</if>
		<!-- 不是自增长的才能有默认值 -->
		<!-- 不是非空时，并且默认值不是NUll -->
		<if test="!fields.fieldIsAutoIncrement and fields.fieldIsNull and fields.fieldDefaultValue != 'NULL'">
			DEFAULT #{fields.fieldDefaultValue} 
		</if>
	</sql>

	<!-- 创建表的 -->
	<select id="createTable" parameterType="java.util.Map">

		<foreach collection="tableMap" index="key" item="value">
			create table `${key}`(
			<foreach collection="value" item="fields" separator=",">
				<include refid="commonSql"></include>
				<if test="fields.fieldIsKey">
					,PRIMARY KEY (`${fields.fieldName}`)
				</if>
				<if test="fields.fieldIsUnique">
					,UNIQUE KEY (`${fields.fieldName}`)
				</if>
			</foreach>
			);
		</foreach>

	</select>
	
	<!-- 验证表是否存在 -->
	<select id="findTableCountByTableName" resultType="int" parameterType="String">
		select count(1) from information_schema.tables
		where table_name = #{tableName} and table_schema = (select database())
	</select>
	
	<!-- 根据表名查询表的结构 -->
	<select id="findTableEnsembleByTableName" resultType="com.gitee.sunchenbin.mybatis.actable.command.SysMysqlColumns" parameterType="String">
		select * from information_schema.columns where table_name = #{tableName} and table_schema = (select database())
	</select>
	
	<!-- 增加字段 -->
	<select id="addTableField" parameterType="java.util.Map">
	
		<foreach collection="tableMap" index="key" item="fields" separator=";">
				alter table `${key}` add 
				<include refid="commonSql"></include>
				<if test="fields.fieldIsKey">
					PRIMARY KEY 
				</if>
				<if test="fields.fieldIsUnique">
					UNIQUE KEY 
				</if>
		</foreach>
		
	</select>
	
	<!-- 删除字段 -->
	<select id="removeTableField" parameterType="java.util.Map">
		<foreach collection="tableMap" index="key" item="field" separator=";">
			alter table `${key}` drop `${field}`
		</foreach>
	</select>
	
	<!-- 修改字段 -->
	<select id="modifyTableField" parameterType="java.util.Map">
	
		<foreach collection="tableMap" index="key" item="fields" separator=";">
				alter table `${key}` modify 
				<include refid="commonSql"></include>
				<if test="fields.fieldIsKey">
					PRIMARY KEY 
				</if>
				<if test="fields.fieldIsUnique">
					UNIQUE KEY 
				</if>
		</foreach>
		
	</select>
	
	
	<!-- 删除主键字段 -->
	<select id="dropKeyTableField" parameterType="java.util.Map">
	
		<foreach collection="tableMap" index="key" item="fields" separator=";">
				alter table `${key}` modify 
				<include refid="commonSql"></include>
				,drop primary key
		</foreach>
		
	</select>
	
	<!-- 删除唯一约束 -->
	<select id="dropUniqueTableField" parameterType="java.util.Map">
	
		<foreach collection="tableMap" index="key" item="fields" separator=";">
				alter table `${key}` DROP INDEX `${fields.fieldName}`
		</foreach>
		
	</select>
	
	<!-- 验证表是否存在 -->
	<select id="dorpTableByName" parameterType="String">
		DROP TABLE IF EXISTS `${tableName}`;
	</select>
	
</mapper>