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/executor/ExecutionContext.java
private HashMap numberFormatters = new HashMap( );
	private HashMap dateFormatters = new HashMap( );
	private IHTMLActionHandler ah = null;
	/**
	 * create a new context. Call close to finish using the execution context
	 */
	public ExecutionContext( int taskID )
	{
		this( null, taskID );
	}
	/**
	 * create a new context. Call close to finish using the execution context
	 */
	public ExecutionContext( ReportEngine engine, int taskID )
	{
		this.engine = engine;
		taskIDString = "Task" + new Integer( taskID ).toString( ); 
		locale = Locale.getDefault( );
		if ( engine != null )
		{
			scriptContext = new ScriptContext( engine.getRootScope( ) );
		}
		else
		{
			scriptContext = new ScriptContext( );
		}
		initailizeScriptContext( scriptContext.getContext( ), scriptContext
				.getRootScope( ) );