Bug 199488 BIRT Cross tab - Filter/SORT dialog UI needs improvement
Improve the crosstab filter dialog for cross tab. Currently we directly display the bound data columns of the crosstab. It is very difficult for user to find which column is based on aggregation.
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/CubeQueryUtil.java
/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.report.data.adapter.api.ICubeQueryUtil#getMemberValueIterator(org.eclipse.birt.report.model.api.olap.TabularCubeHandle, java.lang.String, org.eclipse.birt.data.engine.olap.api.query.ICubeQueryDefinition)
	 */
	public Iterator getMemberValueIterator( TabularCubeHandle cubeHandle,
			String dataBindingExpr, ICubeQueryDefinition queryDefn )
			throws AdapterException
	{
		return this.getMemberValueIterator( cubeHandle,
				dataBindingExpr,
				queryDefn,
				null );
	}
	
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.report.data.adapter.api.ICubeQueryUtil#getMemberValueIterator(org.eclipse.birt.report.model.api.olap.TabularCubeHandle, java.lang.String, org.eclipse.birt.data.engine.olap.api.query.ICubeQueryDefinition)
	 */
	public Iterator getMemberValueIterator( TabularCubeHandle cubeHandle,
			String dataBindingExpr, ICubeQueryDefinition queryDefn, Map appContext )
			throws AdapterException
	{
		try
		{
			if ( cubeHandle == null
					|| dataBindingExpr == null || queryDefn == null )
				return null;
			Set dimLevels = OlapExpressionCompiler.getReferencedDimLevel( new ScriptExpression( dataBindingExpr ),
					queryDefn.getBindings( ),