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/DataColumnBindingDialog.java
}
	}
	public void setAggreate( boolean isAggregate )
	{
		this.isAggregate = isAggregate;
		if ( isAggregate )
		{
			setTitle( AGG_BUILDER_TITLE );
		}
		if ( this.dialogHelper != null )
		{
			this.dialogHelper.setAggregate( isAggregate );
		}
	}
	public void setExpressionProvider( ExpressionProvider expressionProvider )
	{
		this.expressionProvider = expressionProvider;
	}
	protected boolean isForceBinding( )
	{
		return true;
	}
	protected Control createDialogArea( Composite parent )
	{
		Composite composite = (Composite) super.createDialogArea( parent );
		dialogHelper.setExpressionProvider( expressionProvider );
		dialogHelper.createContent( composite );
		UIUtil.bindHelp( composite, IHelpContextIds.DATA_COLUMN_BINDING_DIALOG );
		return composite;
	}