com.gitee.sunchenbin.mybatis.actable.mapping.system.CreateMysqlTablesMapper.xml Maven / Gradle / Ivy
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A.CTable is a Maven project based on Spring and Mybatis, which enhances the function of Mybatis
<?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">
<!-- 强制指定查询表结构映射字段，避免被mybatis下划线转驼峰配置影响，导致查询不到值 -->
<resultMap id="SysMysqlColumnsResultMap" type="com.gitee.sunchenbin.mybatis.actable.command.SysMysqlColumns">
<result property="table_schema" column="table_schema"/>
<result property="table_name" column="table_name"/>
<result property="column_name" column="column_name"/>
<result property="ordinal_position" column="ordinal_position"/>
<result property="column_default" column="column_default"/>
<result property="is_nullable" column="is_nullable"/>
<result property="data_type" column="data_type"/>
<result property="character_maximum_length" column="character_maximum_length"/>
<result property="character_octet_length" column="character_octet_length"/>
<result property="numeric_precision" column="numeric_precision"/>
<result property="numeric_scale" column="numeric_scale"/>
<result property="character_set_name" column="character_set_name"/>
<result property="collation_name" column="collation_name"/>
<result property="column_type" column="column_type"/>
<result property="column_key" column="column_key"/>
<result property="extra" column="extra"/>
<result property="privileges" column="privileges"/>
<result property="column_comment" column="column_comment"/>
</resultMap>
<!-- 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},${fields.fieldDecimalLength})
</if>
<if test="fields.fieldIsNull">
NULL
</if>
<if test="!fields.fieldIsNull">
NOT NULL
</if>
<if test="fields.fieldIsAutoIncrement">
AUTO_INCREMENT
</if>
<!-- 不是自增长的才能有默认值 -->
<!-- 并且不为null时，因为null是默认的没必要写 -->
<if test="!fields.fieldIsAutoIncrement and !fields.fieldIsNull and fields.fieldDefaultValue != 'NULL'">
<if test="fields.fieldType == 'bit'">
<if test="fields.fieldDefaultValue == 'true'.toString()">
DEFAULT 1
</if>
<if test="fields.fieldDefaultValue == 'false'.toString()">
DEFAULT 0
</if>
<if test="fields.fieldDefaultValue == '1'.toString()">
DEFAULT 1
</if>
<if test="fields.fieldDefaultValue == '0'.toString()">
DEFAULT 0
</if>
</if>
<if test="fields.fieldType != 'bit'">
DEFAULT #{fields.fieldDefaultValue}
</if>
</if>
<!-- 不是自增长的才能有默认值 -->
<!-- 不是非空时，并且默认值不是NUll -->
<if test="!fields.fieldIsAutoIncrement and fields.fieldIsNull and fields.fieldDefaultValue != 'NULL'">
<if test="fields.fieldType == 'bit'">
<if test="fields.fieldDefaultValue == 'true'.toString()">
DEFAULT 1
</if>
<if test="fields.fieldDefaultValue == 'false'.toString()">
DEFAULT 0
</if>
<if test="fields.fieldDefaultValue == '1'.toString()">
DEFAULT 1
</if>
<if test="fields.fieldDefaultValue == '0'.toString()">
DEFAULT 0
</if>
</if>
<if test="fields.fieldType != 'bit'">
DEFAULT #{fields.fieldDefaultValue}
</if>
</if>
<if test="fields.fieldComment != ''">
COMMENT #{fields.fieldComment}
</if>
</sql>
<!-- 创建表的 -->
<select id="createTable" parameterType="java.util.Map">
<foreach collection="tableMap" index="key" item="value">
create table `${key}`(
<foreach collection="value" item="fields" separator=",">
<include refid="commonSql"></include>
<if test="fields.fieldIsKey">
,PRIMARY KEY (`${fields.fieldName}`)
</if>
</foreach>
);
</foreach>
</select>
<!-- 验证表是否存在 -->
<select id="findTableCountByTableName" resultType="int" parameterType="String">
select count(1) from information_schema.tables
where table_name = #{tableName} and table_schema = (select database())
</select>
<!-- 根据表名查询表的结构 -->
<select id="findTableEnsembleByTableName" resultMap="SysMysqlColumnsResultMap" parameterType="String">
select * from information_schema.columns where table_name = #{tableName} and table_schema = (select database())
</select>
<!-- 增加字段 -->
<select id="addTableField" parameterType="java.util.Map">
<foreach collection="tableMap" index="key" item="fields" separator=";">
alter table `${key}` add
<include refid="commonSql"></include>
<if test="fields.fieldIsKey">
PRIMARY KEY
</if>
</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 `${key}` modify
<include refid="commonSql"></include>
<if test="fields.fieldIsKey">
PRIMARY KEY
</if>
</foreach>
</select>
<!-- 删除主键字段 -->
<select id="dropKeyTableField" parameterType="java.util.Map">
<foreach collection="tableMap" index="key" item="fields" separator=";">
alter table `${key}` modify
<include refid="commonSql"></include>
,drop primary key
</foreach>
</select>
<!-- 验证表是否存在 -->
<select id="dropTableByName" parameterType="String">
DROP TABLE IF EXISTS `${tableName}`;
</select>
<!-- 查询当前表存在的索引除了主键索引primary -->
<select id="findTableIndexByTableName" resultType="String" parameterType="String">
select index_name from information_schema.statistics
where table_name = #{tableName} and table_schema = (select database()) and lower(index_name) !='primary' and index_name like 'actable_%'
</select>
<!-- 删除索引 -->
<select id="dropTabelIndex" parameterType="java.util.Map">
<foreach collection="tableMap" index="tableName" item="indexName">
DROP INDEX `${indexName}` on `${tableName}`
</foreach>
</select>
<!-- 创建索引 -->
<select id="addTableIndex" parameterType="java.util.Map">
<foreach collection="tableMap" index="tableName" item="fields" separator=";">
CREATE INDEX ${fields.filedIndexName}
ON `${tableName}` (
<foreach collection="fields.filedIndexValue" index="index" item="columnName">
<if test="fields.filedIndexValue.size == 1">
${columnName}
</if>
<if test="fields.filedIndexValue.size > 1">
${columnName}
<if test="fields.filedIndexValue.size != index + 1">
,
</if>
</if>
</foreach>
)
</foreach>
</select>
<!-- 创建唯一约束 -->
<select id="addTableUnique" parameterType="java.util.Map">
<foreach collection="tableMap" index="tableName" item="fields" separator=";">
CREATE UNIQUE INDEX ${fields.filedUniqueName}
ON `${tableName}` (
<foreach collection="fields.filedUniqueValue" index="index" item="columnName">
<if test="fields.filedUniqueValue.size == 1">
${columnName}
</if>
<if test="fields.filedUniqueValue.size > 1">
${columnName}
<if test="fields.filedUniqueValue.size != index + 1">
,
</if>
</if>
</foreach>
)
</foreach>
</select>
</mapper>