NullPointerException with selfmade Plugin

cherokee

Hi!

I've found another small bug.  In a plugin manifest you can name an PluginInit-class (see whitepaper). If you don't do this rapidminer hangs with an NullPointerException. The reason is in [tt]Plugin.showAboutBox[/tt] (as of 5.0.006):

public boolean showAboutBox() {
		try {
			Class<?> pluginInitator = Class.forName(pluginInitClassName, false, getOriginalClassLoader());
			Method initGuiMethod = pluginInitator.getMethod("showAboutBox", new Class[] {});
			Boolean showAboutBox = (Boolean) initGuiMethod.invoke(null, new Object[] {});
			return showAboutBox.booleanValue();
		} catch (ClassNotFoundException e) {
		} catch (SecurityException e) {
		} catch (NoSuchMethodException e) {
		} catch (IllegalArgumentException e) {
		} catch (IllegalAccessException e) {
		} catch (InvocationTargetException e) {
		}
		return true;
	}

The problem is pluginInitClassName. If you don't supply a name for the plugin init class this variable is [tt]null[/tt] and [tt]Class.forName[/tt] issues a NullPointerException. Though you catch many exception types you forgot this one 

As workaround till the next update just use an initialisation class with empty methods.

Best regards,
chero

fischer

Hi,

thanks for reporting this. It is fixed.

Cheers,
Simon