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/script/internal/ScriptExecutor.java
String cpValue = classPathArray[i];
				File file = new File( cpValue );
				try
				{
					l.add( file.toURL( ) );
				} catch ( MalformedURLException e )
				{
					e.printStackTrace( );
				}
			}
			urls = ( URL[] ) l.toArray( new URL[l.size( )] );
		}
		if ( urls != null )
		{
			ClassLoader cl = new URLClassLoader( urls, ScriptExecutor.class
					.getClassLoader( ) );
			try
			{
				return cl.loadClass( className );
				
				
				
			} catch ( ClassNotFoundException e )
			{
				log.log( Level.WARNING, e.getMessage( ), e );
			}
		}
		return null;
	}
	protected static class JSScriptStatus