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.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ExecutionContext.java
HTMLEmitterConfig htmlConfig = (HTMLEmitterConfig) htmlEmitterConfig;
					return htmlConfig.getActionHandler( );
				}
			}
		}
		return null;
	}
	/**
	 * return application class loader.
	 * The application class loader is used to load the report item event handle and 
	 * java classes called in the javascript.
	 * @return class loader
	 */
	public ClassLoader getApplicationClassLoader( )
	{
		return applicationClassLoader;
	}
	/**
	 * the application class loader.
	 * 
	 *   The class loader first try to the load the class as following sequence:
	 *   1. standard java class loader,
	 *   2. classloader setted through the appContext.
	 *   3. CLASSPATH setted by WEBAPP_CLASSPATH_KEY
	 *   4. PROJECT_CLASSPATH_KEY
	 *   5. WORKSAPCE_CLASSPATH_KEY
	 *   
	 */
	private class ApplicationClassLoader extends ClassLoader
	{