我必须从文件(FlatFile)中读取并更新列,如果文件中存在的ID与列中的id匹配。正在正确读取文件,但此处只更新了最后一个id值。请找到代码段
Job-Config.xml
<bean id="abcitemReader" class="org.springframework.batch.item.file.FlatFileItemReader" scope="step">
<property name="resource" value="file:datafile/outputs/ibdData.txt" />
<property name="lineMapper">
<bean class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
<property name="lineTokenizer">
<bean class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer">
<property name="names" value="ID,NAM,TYPE" />
<property name="delimiter" value="|"/>
</bean>
</property>
<property name="fieldSetMapper">
<bean class="com.pershing.intraware.springbatch.mapper.abcFieldsetMapper" />
</property>
</bean>
</property>
</bean>
<bean id="abcitemWriter" class="org.springframework.batch.item.database.JdbcBatchItemWriter" scope="step">
<property name="dataSource" ref="dataSource" />
<property name="sql"><value>UPDATE TEST_abc SET BIZ_ARNG_CD = CASE WHEN ID IN (SELECT ID FROM TEST_abc WHERE ID= ? and MONTH=(to_char(sysdate, 'MM')) AND YR =(to_char(sysdate, 'YY'))) THEN 'Y' ELSE 'N' END</value></property>
<!-- It will take care matching between object property and sql name parameter -->
<property name="itemPreparedStatementSetter" ref="testPrepStatementSetter" />
</bean>
</beans>
Setter.java
public class IDItemPreparedStatementSetter implements ItemPreparedStatementSetter<Test> {
@Override
public void setValues(Test item, PreparedStatement ps) throws SQLException {
// TODO Auto-generated method stub
ps.setString(1, item.getID());
}
}
答案 0 :(得分:1)
您的查询每次触发时都会更新数据库的每一行。你需要限制它。目前;必须将BIZ_ARNG_CD设置为&#39; Y&#39;对于ID等于传递给作者的最后一条记录的ID的记录。
您可以通过两种方式解决此问题 -