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
}
		return null;
	}
	private String getArgumentDisplayNameByName( String function,
			String argument )
	{
		List functions = DEUtil.getMetaDataDictionary( ).getFunctions( );
		for ( Iterator iterator = functions.iterator( ); iterator.hasNext( ); )
		{
			IMethodInfo method = (IMethodInfo) iterator.next( );
			if ( method.getName( ).equals( function ) )
			{
				Iterator argumentListIter = method.argumentListIterator( );
				IArgumentInfoList arguments = (IArgumentInfoList) argumentListIter.next( );
				for ( Iterator iter = arguments.argumentsIterator( ); iter.hasNext( ); )
				{
					IArgumentInfo argInfo = (IArgumentInfo) iter.next( );
					if ( argInfo.getName( ).equals( argument ) )
						return argInfo.getDisplayName( );
				}
			}
		}
		return null;
	}
	public void validate( )
	{
		verifyInput( );
	}
}