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
*/
		private List populateAggrDefinitions( )
				throws DataException
		{
			try
			{
				List result = new ArrayList();
				Context cx = Context.enter( );
				ExpressionCompiler compiler = new ExpressionCompiler( );
				compiler.setDataSetMode( false );
				
				List groupBindingColumns = exprManager.getBindingExprs( );
				for ( int i = 0; i < groupBindingColumns.size( ); i++ )
				{
					GroupBindingColumn gbc = (GroupBindingColumn) groupBindingColumns.get( i );
					Iterator it = gbc.getColumnNames( ).iterator( );
					while ( it.hasNext( ) )
					{
						String name = it.next( ).toString( );
						populateOneAggrDefinition( result,
								cx,
								compiler,
								gbc,
								name );
					}
				}
				return result;
			}
			finally
			{