Question

我对spring jdbc完全不熟悉，我遇到了一种情况，我需要将spring jdbc配置文件中使用的sql转换为纯db2格式。例如，下面是spring conf文件中使用的查询（内部值标记），我想更改为针对db2运行我浏览了许多spring文档，但未能找到任何相关信息，有人可以指向我链接或这个sql格式的解决方案

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="
          http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
          http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
          http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

    <!-- JNDI DataSource for J2EE environment. -->
    <bean id="mi.conv.batch.dataSource" class="org.springframework.jdbc.datasource.WebSphereDataSourceAdapter">
        <property name="targetDataSource">
            <jee:jndi-lookup id="dataSourceInternal" jndi-name="java:comp/env/jdbc/Database" />
        </property>
    </bean>

    <!-- Transaction manager that delegates to JTA (use it when running within a container) -->     
    <bean id="mi.conv.batch.TransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager"/> 


    <!-- Transactional proxy for data access facade. -->
    <bean id="mi.conv.batch.transactionProxyParent" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true">
        <property name="transactionManager" ref="x.y.z.TransactionManager"/>
        <property name="transactionAttributes">
            <props>
                <prop key="add*">PROPAGATION_REQUIRED</prop>
            </props>
        </property>
    </bean>

    <bean id="statementsDao" parent="x.y.z.transactionProxyParent">
        <property name="target">
            <bean class="abc.test.TestDaoImpl">
                <property name="dataSource" ref="a.b.c.dataSource"/>
                <property name="insertNotificationPreferenceSql">
                    <value>
                        select
                            NOTIFICATIONKY
                        from new table (
                            insert into 
                                NOTIFICATION (
                                    ID,
                                    PERSONKY,
                                    INSTANCEKY
                                )
                                **select
                                    (substr( ba.CODE, 1, 2 ) || '1111' || RIGHT( ba.CODE, 4 ) ||
                                        (case substr( ba.CODE, 1, 2 )
                                            when 'XY' then ''
                                            else '2222'
                                        end)
                                    || '0000' || ba.ACCTID ) as ID,
                                    cp.PERSONKY,
                                    ba.INSTANCEKY
                                from
                                    BCSACCT ba
                                    join
                                    PERSON cp on ( 1=1 )
                                where cp.PERSONKY = :personId
                                  and ba.INSTANCEKY = :prodinstId**
                        )                       
                    </value>                
                </property>                                         
            </bean>
        </property>
    </bean>


</beans>

Answer 1

我认为普通的DB2格式化sql将是你的＆＃34;值＆＃34;中的字符串实体。引号。我尝试通过连接到数据库的TEST副本的SQL客户端运行完全相同的查询，看看你是否得到了你正在寻找的结果。

select NOTIFICATIONKY
from new table (
     insert into NOTIFICATION (
         ID,
         PERSONKY,
         INSTANCEKY
     )
     **select ( substr( ba.CODE, 1, 2 ) || 
                '1111'                  || 
                RIGHT( ba.CODE, 4 )     || 
                (case substr( ba.CODE, 1, 2 ) when 'XY' then '' else '2222' end) || 
                '0000'                  || 
                ba.ACCTID ) as ID,
                cp.PERSONKY,
                ba.INSTANCEKY
     from BCSACCT ba
     join PERSON cp on ( 1=1 )
     where cp.PERSONKY = :personId
     and ba.INSTANCEKY = :prodinstId**
)

您可能遇到SQL语句问题;我试着稍微清理缩进以理解它。这个语句看起来将行插入名为＆＃34; NOTIFICATION＆＃34;的表中，其中ID字段是从BCSACCT.CODE或BCSACCT.ACCTID上的一堆OR中弄清楚的，PERSONKY和INSTANCEKY很漂亮直截了当。

快速解释： Spring Beans是使用Spring Inversion of Control Container管理的java类。 xml文件中的信息定义了Spring在初始化类时相关Java Bean使用的几个属性。在您的XML文件中，似乎属性＆＃34; insertNotificationPreferenceSql＆＃34;在类代码中由Java bean引用。 JDBCTemplate类实际上运行SQL，但需要调查Java Bean代码以查看该属性的实际使用方式。

将Spring jdbc中使用的查询转换为db2

1 个答案: