realty/virgo.api/src/main/resources/mapper/ContractMapper.xml

<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.bosshand.virgo.api.dao.ContractDao">

    <resultMap type="com.bosshand.virgo.api.model.Contract" id="contractResult">
        <id column="id" property="id"/>
        <result column="projectId" property="projectId"/>
    </resultMap>

    <insert id="insert" parameterType="com.bosshand.virgo.api.model.Contract" useGeneratedKeys="true" keyProperty="id">
        INSERT INTO contract(projectId) VALUES (#{projectId})
    </insert>

    <delete id="delete">
        DELETE from contract where id=#{id}
    </delete>

    <update id="update" parameterType="com.bosshand.virgo.api.model.Contract">
        UPDATE contract
        <trim prefix="set" suffixOverrides=",">
            <if test="projectId!=0">projectId=#{projectId},</if>
        </trim>
        WHERE id=#{id}
    </update>

    <select id="getList" resultMap="contractResult">
        SELECT * FROM contract
        <where>
            <if test="id != 0">
                and id = #{id}
            </if>
            <if test="projectId != 0">
                and projectId = #{projectId}
            </if>
        </where>
    </select>

</mapper>