🎉Community Raffle - Win $25

An exclusive raffle opportunity for active members like you! Complete your profile, answer questions and get your first accepted badge to enter the raffle.

Join and Win

Using Rapidminer in an Applet

Zdenek

Hi there,
I use some rapidminer operators in an applet, but when I tried to deploy, I get a plenty of security errors. For example, great problem is creating OperatorDescription, because I cant get ClassLoader.getSystemClassLoader() in an unsigned applet. Is there a way how to avoid using signed applets?

operatorDescription = new OperatorDescription(
  ClassLoader.getSystemClassLoader(), 
  "DecisionTreeLearner", 
  "com.rapidminer.operator.learner.tree.DecisionTreeLearner", 
  "description can be written here", null, null, null);

Find more posts tagged with

AI Studio

Developer

Accepted answers

All comments

land

Hi,
did you try to avoid creating an OperatorDescription and instead create the Operator via OperatorService.createOperator(Operator.class)?

Greetings,
Sebastian

Zdenek

Yes, I have tried:

OperatorService.createOperator(com.rapidminer.operator.learner.tree.DecisionTreeLearner.class);

but I got only:

com.rapidminer.operator.OperatorCreationException: 
      No operator description object given for 'com.rapidminer.operator.learner.tree.DecisionTreeLearner
      at com.rapidminer.tools.OperatorService.createOperator(OperatorService.java:429)
       ....

I think the problem is don't call RapidMiner.init(); method, becase initializaton itself causes unsigned applet security exception.
So the question should be probably reformulated to: How to initialize Rapidminer in an unsigned applet?