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/model/component/util/ComponentSwitch.java
result = defaultCase( theEObject );
				return result;
			}
			case ComponentPackage.NEEDLE :
			{
				Needle needle = (Needle) theEObject;
				Object result = caseNeedle( needle );
				if ( result == null )
					result = defaultCase( theEObject );
				return result;
			}
			case ComponentPackage.SCALE :
			{
				Scale scale = (Scale) theEObject;
				Object result = caseScale( scale );
				if ( result == null )
					result = defaultCase( theEObject );
				return result;
			}
			case ComponentPackage.SERIES :
			{
				Series series = (Series) theEObject;
				Object result = caseSeries( series );
				if ( result == null )
					result = defaultCase( theEObject );
				return result;
			}
			case ComponentPackage.ESTRING_TO_DATA_SET_MAP_ENTRY :
			{
				Map.Entry eStringToDataSetMapEntry = (Map.Entry) theEObject;