Bug 193913 Adding a aggregate with a column binding name that already exists should display a proper message
Build ID: 2.2RC3 Steps To Reproduce: 1.Add table to report 2.Add aggregation to table (Column Binding Name = "TEST") 3.Remove aggregate from table (the binding remains in the list of column bindings for this table) 4.Try to add the same aggregate to table (Column Binding Name = "TEST") This causes the error as shown below: An unexpected internal exception occurred.Please see log for detail. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Designer UI Plug-in ID:org.eclipse.birt.report.designer.ui Version:2.2.0.v20070613 Error Code:Error.GUIException.invokedByUnexpectedException Error Message:Caused by java.lang.NullPointerException. It should rather display a message that the binding already exists or just use the available binding for this aggregate. More information:
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
Text txtArg = new Text( argsComposite, SWT.BORDER );
					GridData gridData = new GridData( );
					gridData.widthHint = txtFilter.getBounds( ).width - 9;
					txtArg.setLayoutData( gridData );
					createExpressionButton( argsComposite, txtArg );
					argsMap.put( argName, txtArg );
				}
			}
			else
			{
				( (GridData) argsComposite.getLayoutData( ) ).heightHint = 0;
				
			}
		}
		else
		{
			( (GridData) argsComposite.getLayoutData( ) ).heightHint = 0;
			
			
		}
		argsComposite.layout( );
		composite.layout( );
	}
	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( ) {