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/data/dte/DteDataEngine.java
* ./drivers/driverType/odaconfig.xml.
	 * 
	 * @param context
	 */
	public DteDataEngine( ExecutionContext context )
	{
		this.context = context;
		try
		{
			DataEngineContext dteContext = DataEngineContext.newInstance(
					DataEngineContext.DIRECT_PRESENTATION, context
							.getSharedScope( ), null, null );
			engine = DataEngine.newDataEngine( dteContext );
		} catch ( Exception ex )
		{
			ex.printStackTrace( );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.data.IDataEngine#prepare(org.eclipse.birt.report.engine.ir.Report)
	 */
	public void prepare( Report report )
	{
		prepare( report, null );
	}
	public void prepare( Report report, Map appContext )
	{
		assert ( report != null );