Mybatis增刪改查之Oracle

時間  2019-12-05
標籤 mybatis 增刪 oracle 欄目 MyBatis 简体版
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Mybatis增刪改查之Oracle

一. 查詢

  1. 普通查詢(返回普通的持久層對象,因爲數據庫字段風格和java不一樣,因此創建一個map映射)java

    <resultMap type="com.xxx.domain.RuleCondition" id="RuleConditionResultMapWithoutBondList">
    <id column="RC_ID" jdbcType="NUMERIC" property="ruleConditionId"/>
    <result column="RULE_CAT1" jdbcType="VARCHAR" property="ruleCatOne"/>
    <result column="RULE_CAT2" jdbcType="VARCHAR" property="ruleCatTwo"/>
    <result column="RC_OPER_TYPE" jdbcType="VARCHAR" property="ruleOperateSymbol"/>
    <result column="RULE_REF" jdbcType="VARCHAR" property="ruleRef"/>
    <result column="START_EFFECT_TIME" jdbcType="VARCHAR" property="effectTimeOfStart"/>
    <result column="END_EFFECT_TIME" jdbcType="VARCHAR" property="effectTimeOfEnd"/>
    <result column="BOND_CODE_1" jdbcType="VARCHAR" property="bondCodeOne"/>
    <result column="BOND_CODE_2" jdbcType="VARCHAR" property="bondCodeTwo"/>
    <result column="BP_THRESHOLD" jdbcType="NUMERIC" property="bpThreshold"/>
    <result column="RC_STATUS" jdbcType="VARCHAR" property="ruleStatus"/>
    <result column="OPERATOR_ID" jdbcType="VARCHAR" property="operatorId"/>
    <result column="LAST_UPDATED_DATE" jdbcType="DATE" property="lastUpdateTime"/>
  </resultMap> 

<select id="getRuleConditionWithoutBondListById" resultMap="RuleConditionResultMapWithoutBondList">
    select RC_ID,
           RULE_CAT1,
           RULE_CAT2,
           RC_OPER_TYPE,
           RULE_REF,
           START_EFFECT_TIME,
           END_EFFECT_TIME,
           BOND_CODE_1,
           BOND_CODE_2,
           BP_THRESHOLD,
           RC_STATUS,
           LAST_UPDATED_DATE
    FROM RULES_CONDITION
    WHERE RC_ID = #{ruleConditionId,jdbcType=NUMERIC}
  </select>

  2. 帶有自定義對象的查詢(帶了一個List)數據庫

    <!--collection中的就是查詢附帶的list的函數
    property是java中list的屬性名
-->
<resultMap type="com.xxx.domain.RuleCondition" id="RuleConditionResultMap">
    <id column="RC_ID" jdbcType="NUMERIC" property="ruleConditionId"/>
    <result column="RULE_CAT1" jdbcType="VARCHAR" property="ruleCatOne"/>
    <result column="RULE_CAT2" jdbcType="VARCHAR" property="ruleCatTwo"/>
    <result column="RC_OPER_TYPE" jdbcType="VARCHAR" property="ruleOperateSymbol"/>
    <result column="RULE_REF" jdbcType="VARCHAR" property="ruleRef"/>
    <result column="START_EFFECT_TIME" jdbcType="VARCHAR" property="effectTimeOfStart"/>
    <result column="END_EFFECT_TIME" jdbcType="VARCHAR" property="effectTimeOfEnd"/>
    <result column="BOND_CODE_1" jdbcType="VARCHAR" property="bondCodeOne"/>
    <result column="BOND_CODE_2" jdbcType="VARCHAR" property="bondCodeTwo"/>
    <result column="BP_THRESHOLD" jdbcType="NUMERIC" property="bpThreshold"/>
    <result column="RC_STATUS" jdbcType="VARCHAR" property="ruleStatus"/>
    <result column="OPERATOR_ID" jdbcType="VARCHAR" property="operatorId"/>
    <result column="LAST_UPDATED_DATE" jdbcType="DATE" property="lastUpdateTime"/>
    <collection column="RC_ID" property="bondList" ofType="com.xxx.domain.RuleBond"
                select="getBondListByRuleConditionId">
    </collection>
  </resultMap>

  <resultMap type="com.xxx.domain.RuleBond" id="RuleBondResultMap">
    <id column="RB_ID" jdbcType="NUMERIC" property="ruleBondId"/>
    <id column="RC_ID" jdbcType="NUMERIC" property="ruleConditionId"/>
    <result column="BOND_CODE" jdbcType="VARCHAR" property="bondCode"/>
    <result column="SECURITY_TERM" jdbcType="VARCHAR" property="term"/>
    <result column="BID_STRATEGY_ID" jdbcType="VARCHAR" property="bidStrategyId"/>
    <result column="OFR_STRATEGY_ID" jdbcType="VARCHAR" property="ofrStrategyId"/>
    <result column="STATUS" jdbcType="VARCHAR" property="status"/>
    <result column="OPERATOR_ID" jdbcType="VARCHAR" property="operatorId"/>
    <result column="LAST_UPDATED_DATE" jdbcType="DATE" property="lastUpdateTime"/>
  </resultMap>
<!--查詢語句-->
  <select id="getRuleConditionBOsByEnumValue" resultMap="RuleConditionBOResultMap">
    select RC_ID,
           RULE_CAT1,
           RULE_CAT2,
           RC_OPER_TYPE,
           RULE_REF,
           START_EFFECT_TIME,
           END_EFFECT_TIME,
           BOND_CODE_1,
           BOND_CODE_2,
           BP_THRESHOLD,
           RC_STATUS,
           LAST_UPDATED_DATE
    FROM RULES_CONDITION
    WHERE RULE_CAT1 = #{enumValue,jdbcType=VARCHAR}
  </select>
<!--附帶List的查詢語句-->
  <select id="getBondListByRuleConditionId" resultMap="RuleBondResultMap">
    select RB_ID,
           RC_ID,
           t1.BOND_CODE,
           t2.SECURITY_TERM,
           BID_STRATEGY_ID,
           OFR_STRATEGY_ID,
           t1.STATUS,
           t1.LAST_UPDATED_DATE
    FROM RULES_BOND t1
           left join BOND_BASIS_INFO t2 on t1.BOND_CODE = t2.BOND_CODE
    WHERE RC_ID = #{ruleConditionId,jdbcType=NUMERIC}
  </select>
二. 新增

  1. 普通新增dom

    <insert id="addRuleBond" parameterType="com.xxx.domain.RuleBond">
    insert into RULES_BOND
    (RB_ID,
    RC_ID,
    BOND_CODE,
    BID_STRATEGY_ID,
    OFR_STRATEGY_ID,
    STATUS,
    OPERATOR_ID,
    LAST_UPDATED_DATE)
    values (SEQ_RULES_BOND.nextVal,
    #{ruleConditionId,jdbcType=NUMERIC},
    #{bondCode,jdbcType=VARCHAR},
    #{bidStrategyId,jdbcType=VARCHAR},
    #{ofrStrategyId,jdbcType=VARCHAR},
    #{status,jdbcType=VARCHAR},
    #{operatorId,jdbcType=VARCHAR},
    systimestamp)
  </insert>

  2. 返回主鍵(多了一個selectkey)函數

    <!--selectkey中 keyproperty是寫java中屬性名稱
     後面的values中將獲得的ruleBondId賦值便可-->
<insert id="addRuleBond" parameterType="com.xxx.domain.RuleBond">
 <selectKey resultType="java.lang.Integer" order="BEFORE" keyProperty="ruleBondId">
      SELECT SEQ_RULES_BOND.Nextval from DUAL
    </selectKey>
    insert into RULES_BOND
    (RB_ID,
    RC_ID,
    BOND_CODE,
    BID_STRATEGY_ID,
    OFR_STRATEGY_ID,
    STATUS,
    OPERATOR_ID,
    LAST_UPDATED_DATE)
    values (#{ruleBondId,jdbcType=NUMERIC},
    #{ruleConditionId,jdbcType=NUMERIC},
    #{bondCode,jdbcType=VARCHAR},
    #{bidStrategyId,jdbcType=VARCHAR},
    #{ofrStrategyId,jdbcType=VARCHAR},
    #{status,jdbcType=VARCHAR},
    #{operatorId,jdbcType=VARCHAR},
    systimestamp)
  </insert>

  3. 批量新增code

    參照網上寫了一下,一直報缺失表達式,原來是insert into後面 是不須要 values的;xml

    還有就是關於Oracle返回主鍵List ,我在網上暫時還沒找到能正確執行的例子 ,求大佬告知對象

    <insert id="addRuleBondList" parameterType="java.util.List">
    insert into RULES_BOND
    (RB_ID,
    RC_ID,
    BOND_CODE,
    BID_STRATEGY_ID,
    OFR_STRATEGY_ID,
    STATUS,
    OPERATOR_ID,
    LAST_UPDATED_DATE
    )
    SELECT  SEQ_RULES_BOND.NEXTVAL,t.*
    FROM (
    <foreach close=")" collection="ruleBonds" item="item" index="index" open="(" separator="union ALL">
      select
      #{item.ruleConditionId,jdbcType=NUMERIC},
      #{item.bondCode,jdbcType=VARCHAR},
      #{item.bidStrategyId,jdbcType=VARCHAR},
      #{item.ofrStrategyId,jdbcType=VARCHAR},
      #{item.status,jdbcType=VARCHAR},
      #{item.operatorId,jdbcType=VARCHAR},
       systimestamp
      from dual
    </foreach>
      ) t
  </insert>

  4. 批量新增,存在則插入get

    <insert id="generateBaselines" parameterType="java.util.List">
    MERGE INTO RULES_CONDITION t
    USING (
    <foreach collection="ruleConditions" item="item" index="index" separator="union">
      select #{item.ruleConditionId,jdbcType=NUMERIC} id,
      #{item.ruleCatOne,jdbcType=VARCHAR} cat1,
      #{item.ruleCatTwo,jdbcType=VARCHAR} cat2,
      #{item.bondCodeOne,jdbcType=VARCHAR} code1,
      #{item.bondCodeTwo,jdbcType=VARCHAR} code2,
      #{item.ruleOperateSymbol,jdbcType=VARCHAR} symbol,
      #{item.operatorId,jdbcType=VARCHAR} u
      from DUAL
    </foreach>) t1
    <!-- 哪些條件相符-->
    ON (t.RULE_CAT1 = t1.cat1 AND t.RULE_CAT2 = t1.cat2 AND t.RC_OPER_TYPE = t1.symbol)
    <!--符合條件時-->
    WHEN MATCHED THEN
    UPDATE SET t.BOND_CODE_1 = t1.code1,t.BOND_CODE_2 = t1.code2,t.LAST_UPDATED_DATE = default
    <!--不符合條件時-->
    WHEN NOT MATCHED THEN
    INSERT(RC_ID, RULE_CAT1, RULE_CAT2, RC_OPER_TYPE, RULE_REF, BOND_CODE_1, BOND_CODE_2,RC_STATUS,OPERATOR_ID,LAST_UPDATED_DATE)
    VALUES (SEQ_RULES_CONDITION.nextval, t1.cat1, t1.cat2, t1.symbol, '1', t1.code1, t1.code2, '0', t1.u,default)
  </insert>
三. 修改

(begin,end最好仍是加上,以前報錯一直找不到錯,加上begin,end就行了;end先後都加分號";",begin不用加)it

  1. 普通修改io

    <update id="modifyRuleBond" parameterType="com.xxx.domain.RuleBond">
    begin
    update RULES_BOND
    set
    <if test="bidStrategyId!=null">
      BID_STRATEGY_ID=#{bidStrategyId,jdbcType=VARCHAR},
    </if>
    <if test="ofrStrategyId!=null">
      OFR_STRATEGY_ID=#{ofrStrategyId,jdbcType=VARCHAR},
    </if>
    <if test="operatorId!=null">
      OPERATOR_ID=#{operatorId,jdbcType=VARCHAR},
    </if>
    <if test="status!=null">
      STATUS=#{status,jdbcType=VARCHAR},
    </if>
    LAST_UPDATED_DATE=SYSTIMESTAMP
    WHERE RB_ID = #{ruleBondId,jdbcType=NUMERIC};
    end;
  </update>

  1. 批量修改(begin,end加在 foreach的open和close處,記得加上分號)

    <update id="modifyRuleCondition" parameterType="java.util.List">
    <foreach collection="ruleConditions" item="item" index="index" open="begin" close=";end;" separator=";">
      UPDATE RULES_CONDITION
      <set>
        <if test="item.ruleRef!=null">
          RULE_REF=#{item.ruleRef,jdbcType=VARCHAR},
        </if>
        <if test="item.effectTimeOfStart!=null">
          START_EFFECT_TIME=#{item.effectTimeOfStart,jdbcType=VARCHAR},
        </if>
        <if test="item.effectTimeOfEnd!=null">
          END_EFFECT_TIME= #{item.effectTimeOfEnd,jdbcType=VARCHAR},
        </if>
        <if test="item.bpThreshold!=null">
          BP_THRESHOLD= #{item.bpThreshold,jdbcType=NUMERIC},
        </if>
        <if test="item.ruleStatus!=null">
          RC_STATUS= #{item.ruleStatus,jdbcType=VARCHAR},
        </if>
        <if test="item.operatorId!=null">
          OPERATOR_ID= #{item.operatorId,jdbcType=VARCHAR},
        </if>
        LAST_UPDATED_DATE=default,
      </set>
      WHERE RC_ID = #{item.ruleConditionId,jdbcType=INTEGER}
    </foreach>
  </update>
四. 刪除

  1. 普通刪除

    <delete id="deleteRuleBond" parameterType="com.xxx.domain.RuleBond">
    delete
    from RULES_BOND
    where RB_ID = #{ruleBondId}
      AND TO_TIMESTAMP(TO_CHAR(LAST_UPDATED_DATE, 'yyyy-MM-dd hh24:mi:ss'), 'yyyy-MM-dd hh24:mi:ss') = #{lastUpdateTime,jdbcType=TIMESTAMP}
  </delete>

  1. 批量刪除

    ​ 1)批量執行語句

    <delete id="batchDeleteRuleBond" parameterType="java.util.List">
    <foreach collection="ruleBonds" open="begin" close=";end;" item="item" separator=";">
      DELETE FROM RULES_BOND
      WHERE RB_ID = #{item.ruleBondId} and TO_TIMESTAMP(TO_CHAR(LAST_UPDATED_DATE, 'yyyy-MM-dd hh24:mi:ss'), 'yyyy-MM-dd hh24:mi:ss') = #{item.lastUpdateTime,jdbcType=TIMESTAMP}
    </foreach>
  </delete>

    ​ 2)綜合成一條語句執行

    <delete id="batchDeleteRuleBond" parameterType="java.util.List">
    DELETE FROM RULES_BOND
    WHERE RB_ID IN (
    SELECT A.RB_ID FROM (
    <foreach collection="ruleBonds" item="item" separator="UNION All">
      SELECT * FROM RULES_BOND
      WHERE RB_ID = #{item.ruleBondId} AND TO_TIMESTAMP(TO_CHAR(LAST_UPDATED_DATE, 'yyyy-MM-dd hh24:mi:ss'), 'yyyy-MM-dd hh24:mi:ss') = #{item.lastUpdateTime,jdbcType=TIMESTAMP}
    </foreach>
    )A
    )
  </delete>

    ​

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