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
{
			evaluate( script );
		}
	}
	/**
	 * execute the script. Simply evaluate the script, then drop the return
	 * value
	 * 
	 * @param script
	 *            script statement
	 * @param fileName
	 *            file name
	 * @param lineNo
	 *            line no
	 */
	public void execute( String script, String fileName, int lineNo )
	{
		if ( script != null )
		{
			evaluate( script, fileName, lineNo );
		}
	}
	/**
	 * @return Returns the locale.
	 */
	public Locale getLocale( )
	{
		return locale;
	}
	/**