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
} 
		
		/**
		 * Gets the Javascript scope for evaluating expressions for this query
		 * 
		 * @return
		 */
		public Scriptable getQueryScope()
		{
			if ( queryScope == null )
			{
				 
				
				
				
				queryScope = getDataEngine().newSubScope( parentScope );
				queryScope.setPrototype( dataSet.getJSDataSetObject() );
			}
			return queryScope;
		}
		
		/**
		 * Prepare Executor so that it is ready to execute the query
		 * 
		 * @param outerRts
		 * @param targetScope
		 * @throws DataException
		 */
		private void prepareExecution( IQueryResults outerRts, Scriptable targetScope ) throws DataException
		{