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
/**
	 * report runnable used to create the report content
	 */
	private IReportRunnable runnable;
	/**
	 * the report design contained in the report runnable
	 */
	private Report report;
	/**
	 * Global configuration variables
	 */
	private Map configs = new BirtHashMap( );
	/**
	 * Report parameters used to create the report content
	 */
	private Map params = new BirtHashMap( );
	private Map persistentBeans = new HashMap( );
	private Map transientBeans = new HashMap( );
	private ReportDocumentWriter docWriter;
	/**
	 * app context
	 */
	private Map appContext;
	/**
	 * report context used to evaluate the java-based script.
	 */
	private IReportContext reportContext;
	/**
	 * options used to render the report content
	 */