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
if ( expr instanceof IScriptExpression )
		{
			return context.evaluate( ( ( IScriptExpression ) expr ).getText( ) );
		}
		if ( expr instanceof IConditionalExpression )
		{
			return context.evaluateCondExpr( ( IConditionalExpression ) expr );
		}
		
		assert ( false );
		return null;
	}
	protected IQueryResults getParentQR( )
	{
		for ( int i = rsStack.size( ) - 1; i >= 0; i-- )
		{
			DteResultSet rs = ( DteResultSet ) rsStack.get( i );
			if ( rs.getQueryResults( ) != null )
			{
				return rs.getQueryResults( );
			}
		}
		return null;
	}
	public DataEngine getDataEngine( )
	{
		return engine;
	}
}