Bug 121111 Bad event handler class name does not cause an error
Open a report design, open any Data Set's Property editor. Type in an invalid Java class name for the "Event Handler Class" property, say "aaa". Preview a report that uses that Data Set. The report executes normally. No error is shown. Event handlers are an integral part of a report design, and if a script handler class is not found, or if the handler throws a runtime exception, Report Engine should either stop the report execution, or show the error message in the generated report. (Tested with the 2005-12-15 nightly build)
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
Collections.sort( choices, new SelectionChoiceComparator( true ) );
		return choices;
	}
	private CascadingParameterGroupHandle getCascadingParameterGroup(
			String name )
	{
		ReportDesignHandle report = ( ReportDesignHandle ) runnable
				.getDesignHandle( );
		return report.findCascadingParameterGroup( name );
	}
	static class SelectionChoice implements IParameterSelectionChoice
	{
		String label;
		Object value;
		SelectionChoice( String label, Object value )
		{
			this.label = label;
			this.value = value;
		}
		public String getLabel( )
		{
			return this.label;
		}
		public Object getValue( )
		{
			return this.value;
		}
	}
}