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
isAggregate( ) ? DEFAULT_AGGREGATION_NAME
							: DEFAULT_ITEM_NAME );
			setName( this.newBinding.getName( ) );
		}
		else
		{
			setName( getBinding( ).getName( ) );
			setDisplayName( getBinding( ).getDisplayName( ) );
			setTypeSelect( DATA_TYPE_CHOICE_SET.findChoice( getBinding( ).getDataType( ) )
					.getDisplayName( ) );
			setDataFieldExpression( getBinding( ).getExpression( ) );
		}
		if ( this.getBinding( ) != null )
		{
			this.txtName.setEnabled( false );
		}
		if ( isAggregate( ) )
		{
			initFunction( );
			initDataFields( );
			initFilter( );
			initGroups( );
		}
	}
	private void initFilter( )
	{
		if ( binding != null && binding.getFilterExpression( ) != null )
		{
			txtFilter.setText( binding.getFilterExpression( ) );
		}