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/RunTask.java
IContentEmitter emitter = createContentEmitter( executor );
			executionContext.openDataEngine( );
			executor.execute( reportDesign, emitter );
			executionContext.closeDataEngine( );
			writer.saveDesign( reportDesign );
			writer.saveParamters( inputValues );
			writer.savePersistentObjects( executionContext.getGlobalBeans( ) );
			closeReportDocument( );
			closeFactory( );
		}
		catch ( Exception ex )
		{
			log.log( Level.SEVERE,
					"An error happened while running the report. Cause:", ex ); 
			throw new EngineException(
					"Error happended while running the report", ex );
		}
		catch ( OutOfMemoryError err )
		{
			log.log( Level.SEVERE,
					"An OutOfMemory error happened while running the report." ); 
			throw err;
		}
	}
	public void close( )
	{
		super.close( );
	}
}