Bug 213822 [Regression]Can not save the modification of group in Aggregation builder
Description: [2.2.2]Can not save the modification of group in Aggregation builder Build number: 2.2.2.v20071225-0630 Steps to reproduce: 1, New a table with two groups 2, Insert a aggregation builder in group footer 3, Select the first group and click OK 4, Open the builder again and modify the group to group2 Expected result: The modification can be saved Actual result: The modification takes no effect and the report design has no dirty mark after the modification. Error log:
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
private void createExpressionButton( final Composite parent, final Text text )
	{
		Button expressionButton = new Button( parent, SWT.PUSH );
		if ( expressionProvider == null )
			expressionProvider = new BindingExpressionProvider( this.bindingHolder );
		UIUtil.setExpressionButtonImage( expressionButton );
		expressionButton.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				ExpressionBuilder expression = new ExpressionBuilder( text.getText( ) );
				expression.setExpressionProvier( expressionProvider );
				if ( expression.open( ) == Window.OK )
				{
					if ( expression.getResult( ) != null )
						text.setText( expression.getResult( ) );
				}
			}
		} );
		if ( isRef )
		{
			expressionButton.setEnabled( false );
		}
	}
	private void createExpressionButton( final Composite parent,
			final Combo combo )
	{
		Button expressionButton = new Button( parent, SWT.PUSH );
		combo.setData( "express", expressionButton );
		if ( expressionProvider == null )
			expressionProvider = new BindingExpressionProvider( this.bindingHolder );