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/api/impl/ScriptedDesignVisitor.java
for ( int i = 0; i < dataSetSlot.getCount( ); i++ )
		{
			apply( dataSetSlot.get( i ) );
		}
		
		SlotHandle parameterSlot = handle.getParameters( );
		for ( int i = 0; i < parameterSlot.getCount( ); i++ )
		{
			apply( parameterSlot.get( i ) );
		}
		
		SlotHandle scratchSlot = handle.getScratchPad( );
		for ( int i = 0; i < scratchSlot.getCount( ); i++ )
		{
			apply( scratchSlot.get( i ) );
		}
		
		SlotHandle styleSlot = handle.getStyles( );
		for ( int i = 0; i < styleSlot.getCount( ); i++ )
		{
			apply( styleSlot.get( i ) );
		}
	}
	/**
	 * setup the master page object from the base master page handle.
	 * 
	 * @param page
	 *            page object
	 * @param handle
	 *            page handle