Bug 140620 Chart scripting errors are ignored
Write a chart with an invalid script, the execution simply ignores the script. This makes it difficult to debug scripting. The error message is also not precise and needs improvements.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/script/ScriptHandler.java
*/
		if ( ScriptHandler.BEFORE_DATA_SET_FILLED.equals( name ) )
		{
			javahandler.beforeDataSetFilled( (Series) tmpArgs[0],
					(IDataSetProcessor) tmpArgs[1],
					(IChartScriptContext) tmpArgs[2] );
		}
		else if ( ScriptHandler.AFTER_DATA_SET_FILLED.equals( name ) )
		{
			javahandler.afterDataSetFilled( (Series) tmpArgs[0],
					(DataSet) tmpArgs[1],
					(IChartScriptContext) tmpArgs[2] );
		}
		else if ( ScriptHandler.BEFORE_GENERATION.equals( name ) )
		{
			javahandler.beforeGeneration( (Chart) tmpArgs[0],
					(IChartScriptContext) tmpArgs[1] );
		}
		else if ( ScriptHandler.AFTER_GENERATION.equals( name ) )
		{
			javahandler.afterGeneration( (GeneratedChartState) tmpArgs[0],
					(IChartScriptContext) tmpArgs[1] );
		}
		else if ( ScriptHandler.BEFORE_RENDERING.equals( name ) )
		{
			javahandler.beforeRendering( (GeneratedChartState) tmpArgs[0],
					(IChartScriptContext) tmpArgs[1] );
		}
		else if ( ScriptHandler.AFTER_RENDERING.equals( name ) )
		{