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
return factoryMode;
	}
	/**
	 * is in presentation mode.
	 * 
	 * @return true, presentation mode, false otherwise
	 */
	public boolean isInPresentation( )
	{
		return presentationMode;
	}
	/**
	 * set the in factory mode
	 * 
	 * @param mode
	 *            factory mode
	 */
	public void setFactoryMode( boolean mode )
	{
		this.factoryMode = mode;
	}
	/**
	 * set in presentation mode
	 * 
	 * @param mode
	 *            presentation mode
	 */
	public void setPresentationMode( boolean mode )
	{
		this.presentationMode = mode;