target/classes/mapper/DormitoryMapper.xml

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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.frankioxo.dormitory.mapper.DormitoryMapper">

    <select id="availableList" resultType="Dormitory">
        select id, name
        from dormitory
        where available > 0
    </select>

    <update id="subAvailable">
        update dormitory
        set available = available - 1
        where id = #{id}
    </update>

    <update id="addAvailable">
        update dormitory
        set available = available + 1
        where id = #{id}
    </update>

    <select id="findDormitoryIdByBuildingId" resultType="java.lang.Integer">
        select id
        from dormitory
        where building_id = #{buildingId}
    </select>

    <select id="findAvailableDormitoryId" resultType="java.lang.Integer">
        select id
        from dormitory
        where available > 0 limit 0,1
    </select>

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

    <select id="list" resultType="Dormitory">
        select d.id, b.name buildingName, d.name name, d.type, d.available, d.telephone
        from dormitory d,
             building b
        where d.building_id = b.id
    </select>

    <select id="searchByName" resultType="Dormitory">
        select d.id, b.name buildingName, d.name name, d.type, d.available, d.telephone
        from dormitory d,
             building b
        where d.building_id = b.id
          and d.name like concat('%', #{value}, '%')
    </select>

    <select id="searchByTelephone" resultType="Dormitory">
        select d.id, b.name buildingName, d.name name, d.type, d.available, d.telephone
        from dormitory d,
             building b
        where d.building_id = b.id