hi all:
I'm not sure i'm using requestfactory+JPA the right way even through i
followed the example(expense) step by step. the memory at server side
increase everytime i query some data from Entity<i use Mysql>, after several
times, the server heap overflow.
server side:
public static List<Scenario> findScenarioEntriesByProduct2( Long
productId, int startIndex, int maxCount )
{
//get all Scenarios from startIndex to startIndex+maxCount
EntityManager em = entityManager();
List<Scenario> resultList = new ArrayList<Scenario>();
try
{
Query q = em.createQuery( "select o from Scenario o where
o.product.id = :productid" );
q.setParameter( "productid", productId );
q.setFirstResult( startIndex );
q.setMaxResults( maxCount );
@SuppressWarnings( "unchecked" )
List<Scenario> rl = q.getResultList();
rl.size();
resultList.addAll( rl );
return resultList;
}
catch( Exception ex )
{
logger.error( "exception occur!", ex );
}
finally
{
em.close();
}
return Collections.emptyList();
}
As you can see the code is quite simple and i can't figure out where's the
problem. Could anyone help? thanks!
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