Bug 128359 The logic is not correctly when a filter is added to the table on the layout
Description: The logic is not correctly when a filter is added to the table on the layout Steps to reproduce: Let me give an example. 1. Creat a report, new a datasource and a dataset 2. We consume that the dataset has 10 records(DataResult_A) . We set a filter(Filter_A) in the dataset, and then the 6 records of the dataset(DataResult_B) are gained. 3. Drag the dataset to the layout, and set another filter(Filter_B) on the table. Actual result: The result of Filter_B is based on DataResult_A. Expect result: The result of Filter_B should be based on DataResult_B.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedQuery.java
*/
	protected QueryResults doPrepare( IQueryResults outerResults, Scriptable scope ) throws DataException
	{
		if ( this.queryDefn == null )
		{
			
			DataException e = new DataException(ResourceConstants.PREPARED_QUERY_CLOSED);
			logger.logp( Level.WARNING,
					PreparedQuery.class.getName( ),
					"doPrepare",
					"PreparedQuery instance is closed.",
					e );
			throw e;
		}
		
		Executor executor = newExecutor();
		
		executor.setAppContext( this.getAppContext() );
		
		
		
		logger.finer( "Start to prepare the execution." );
		executor.prepareExecution( outerResults, scope );
		logger.finer( "Finish preparing the execution." );
	    return new QueryResults( engine.getContext( ),
				getDataSourceQuery( ),
				this,
				executor );
	}