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From Abhigyan Agrawal1 <abhigyan_agra...@in.ibm.com>
Subject Re: Question about the executeBatch......
Date Wed, 22 Apr 2009 06:11:44 GMT
Hi Joey,
        You should always put a batch inside an explicit transaction, 
otherwise iBATIS will execute each statement individually. (i.e. it will 
ignore batch completely). That's why batchResult is empty. If you look at 
your database, all the updates would have happened.
Try:

this.getSqlMapClient().startTransaction();
this.getSqlMapClient().startBatch();
for (Subscriber subscriber : subscriberList) {
    this.getSqlMapClient().update("Subscriber_updateSubscriber", 
subscriber);
}
List<BatchResult> batchResult = 
this.getSqlMapClient().executeBatchDetailed();
this.getSqlMapClient().commitTransaction();

Now you should see desired result.
 
P.S.- setInBatch(false) used in executeBatchDetailed() shouldn't affect 
executeBatchDetailed at all. 

Thanks,
Abhigyan




Joey Lv <mrlvxy@gmail.com> 
22/04/2009 11:10
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Subject
Question about the executeBatch......






Hi,

Below is my java code, to execute a batch

this.getSqlMapClient().startBatch();
for (Subscriber subscriber : subscriberList) {
    this.getSqlMapClient().update("Subscriber_updateSubscriber", 
subscriber);
}
List<BatchResult> batchResult = 
this.getSqlMapClient().executeBatchDetailed();

But I found the batchResult alway is null.

Here is the source code of  
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate#startBatch

public void startBatch(SessionScope session) {
    session.setInBatch(true);
}

and here is the source code of 
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate#executeBatchDetailed
 
 public List executeBatchDetailed(SessionScope session) throws 
SQLException, BatchException {
    session.setInBatch(false);
    return sqlExecutor.executeBatchDetailed(session);
  }

So, why need ‘session.setInBatch(false);’ in the mehod 
executeBatchDetailed()? And is this the cause of "batchResult always is 
null"?

Thanks

Joey Lv

 

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