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
currentNode = rootNode;
			StringTokenizer tokenizer = new StringTokenizer( path, "/" ); 
			while ( tokenizer.hasMoreTokens( ) )
			{
				currentNode = currentNode.getSubNode( tokenizer.nextToken( ) );
				if ( currentNode == null )
				{
					return null;
				}
			}
		}
		return currentNode;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
	 */
	protected final Control createDialogArea( Composite parent )
	{
		Composite composite = new Composite( parent, SWT.NONE );
		composite.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		GridLayout layout = new GridLayout( );
		layout.numColumns = 1;
		layout.marginWidth = convertHorizontalDLUsToPixels( IDialogConstants.HORIZONTAL_MARGIN );
		layout.marginHeight = convertVerticalDLUsToPixels( IDialogConstants.VERTICAL_MARGIN );
		layout.verticalSpacing = convertVerticalDLUsToPixels( IDialogConstants.VERTICAL_SPACING );
		composite.setLayout( layout );
		SashForm sashForm = new SashForm( composite, SWT.NONE );
		sashForm.setOrientation( SWT.HORIZONTAL );