mapper.UserDaoMapper.xml Maven / Gradle / Ivy

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<?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.jn.sqlhelper.examples.common.dao.UserDao">
    <resultMap id="entity" type="com.jn.sqlhelper.examples.common.model.User">
        <id property="id" column="ID" javaType="java.lang.String" jdbcType="VARCHAR"/>
        <result property="name" column="NAME" javaType="java.lang.String" jdbcType="VARCHAR"/>
        <result property="age" column="AGE" javaType="java.lang.Integer" jdbcType="INTEGER"/>
    </resultMap>

    <sql id="all_columns">
        ID,
        NAME,
        AGE
    </sql>

    <insert id="insert" parameterType="com.jn.sqlhelper.examples.common.model.User">
        INSERT INTO
        USER (<include refid="all_columns"/>)
        VALUES (
        #{id},
        #{name},
        #{age}
        )
    </insert>

    <update id="updateById" parameterType="com.jn.sqlhelper.examples.common.model.User">
        UPDATE USER
        SET
        NAME = #{name},
        AGE = #{age}
        WHERE ID = #{id}
    </update>

    <delete id="deleteById" parameterType="java.lang.String">
        DELETE FROM USER
        WHERE ID = #{id}
    </delete>

    <select id="selectById" parameterType="java.lang.String" resultMap="entity">
        SELECT
        <include refid="all_columns"/>
        FROM USER
        WHERE ID = #{id}
    </select>

    <select id="selectByLimit" parameterType="com.jn.sqlhelper.examples.common.model.User" resultMap="entity">
        SELECT
        <include refid="all_columns"/>
        FROM USER
        WHERE 1=1
        <if test="id!=null and id != ''">AND ID = #{id}</if>
        <if test="name!=null and name != ''">AND NAME = #{name}</if>
        <if test="age!=null and age gte 0">AND AGE > #{age}</if>
    </select>
</mapper>