Bug 134988 [regression]Available items in Query didn't change when change data source in Edit Data Set Dialog.
Description: Available items in Query didn't change when change data source in Edit Data Set Dialog. Steps to reproduce: 1. New two different data sources. 2. New a dataset, change data source, view Available Items in Query pane. Expected result: Available Items in Query pane changed according to new Data source. Actual result: Available Items in Query pane kept unchanged.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/property/AbstractPropertyDialog.java
if ( node.hasSubNodes( ) )
			{
				PropertyNode[] nodes = node.getSubNodes( );
				for ( int n = 0; n < nodes.length; n++ )
				{
					
					if ( !cancelPressed( nodes[n] ) )
					{
						return false;
					}
				}
			}
			
			
			return true;
		}
		return false;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.dialogs.Dialog#okPressed()
	 */
	protected void okPressed( )
	{
		
		if ( rootNode.hasSubNodes( ) )
		{
			PropertyNode[] nodes = rootNode.getSubNodes( );
			for ( int n = 0; n < nodes.length; n++ )