TransactionMapper.xml

<?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="org.archfirst.mmm.persistence.TransactionMapper">

    <resultMap id="resultTransaction" type="Transaction">
        <id property="id" column="id" />
        <result property="txn_date" column="txn_date"/>
        <result property="payee" column="payee"/>
        <result property="memo" column="memo"/>
        <result property="amount" column="amount"/>
        <association property="account" column="account_id" javaType="Account">
            <id property="id" column="account_id"/>
            <result property="name" column="account_name"/>
        </association>
        <association property="category" column="category_id" javaType="Category">
            <id property="id" column="category_id"/>
            <result property="name" column="category_name"/>
        </association>
    </resultMap>
    
    <insert id="createTransaction" parameterType="Transaction" useGeneratedKeys="true" keyProperty="id">
        INSERT INTO transactions (txn_date, payee, memo, amount, account_id, category_id)
        VALUES      (#{txn_date}, #{payee}, #{memo}, #{amount}, #{account.id}, #{category.id})
    </insert>

    <update id="updateTransaction" parameterType="Transaction">
        UPDATE transactions
        SET    txn_date = #{txn_date},
               payee = #{payee},
               memo = #{memo},
               amount = #{amount},
               account_id = #{account.id},
               category_id = #{category.id}
        WHERE  id = #{id}
    </update>

    <select id="getTransaction" resultMap="resultTransaction">
        SELECT   t.id        AS id,
                 t.txn_date  AS txn_date,
                 t.payee     AS payee,
                 t.memo      AS memo,
                 t.amount    AS amount,
                 a.id        AS account_id,
                 a.name      AS account_name,
                 c.id        AS category_id,
                 c.name      AS category_name
        FROM     transactions t
                 LEFT OUTER JOIN accounts a
                              ON t.account_id = a.id
                 LEFT OUTER JOIN categories c
                              ON t.category_id = c.id
        WHERE    t.id = #{id}
    </select>
    
    <select id="getTransactions" resultMap="resultTransaction">
        SELECT   t.id        AS id,
                 t.txn_date  AS txn_date,
                 t.payee     AS payee,
                 t.memo      AS memo,
                 t.amount    AS amount,
                 a.id        AS account_id,
                 a.name      AS account_name,
                 c.id        AS category_id,
                 c.name      AS category_name
        FROM     transactions t
                 LEFT OUTER JOIN accounts a
                              ON t.account_id = a.id
                 LEFT OUTER JOIN categories c
                              ON t.category_id = c.id
        WHERE    a.id = #{accountId}
    </select>

    <select id="getTransactionsByCategory" resultType="TransactionSummaryForCategory">
        SELECT   c.id              AS cat_id,
                 c.name            AS cat_name,
                 SUM(t.amount)     AS amount
        FROM     transactions t
                 LEFT OUTER JOIN categories c
                              ON t.category_id = c.id
        WHERE  t.txn_date BETWEEN #{startDate} AND #{endDate}
        GROUP BY c.id
    </select>

    <delete id="deleteTransaction">
        DELETE FROM transactions
        WHERE       id = #{id}
    </delete>

</mapper>