Bug 200755 [smoke]Fail to preview Crosstab after deploy BIRT in application servers.[0601][1102]
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ServiceForQueryResults.java
&& (!hasDataSetRowReference( (IScriptExpression) expr ));
			}
			catch ( BirtException e )
			{
				throw DataException.wrap( e );
			}
		}
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryService#execSubquery(org.eclipse.birt.data.engine.odi.IResultIterator,
	 *      java.lang.String, org.mozilla.javascript.Scriptable)
	 */
	public IQueryResults execSubquery( IResultIterator iterator,
			String subQueryName, Scriptable subScope ) throws DataException
	{
		return queryService.execSubquery( iterator, subQueryName, subScope );
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryService#close()
	 */
	public void close( )
	{
		if ( queryExecutor != null )
		{
			queryExecutor.close( );
			queryExecutor = null;
		}
	}