IBM Filenet P8 Change Preprocessor Java implementation cannot be found

Question

In my current project using Filenet P8 Content Platform Engine 5.2.1 with WebSphere 8.5.5.3, IBM RAD 9.5 and Apache Maven 3.3.1

I'm trying to deploy a Change Preprocessor linked to a certain document class. Every time a document is added to this class or subclass I would like the CP to change some properties.

I uploaded the action handler's class as a Code Module, the same way I usually do for subscriptions:

where the Update Document Properties CP object Content Elements tab shows as follows:

and I have properly configured the preprocessor definition using ACCE in the document class Change Preprocessor Definitions tab:

The Javascript implementation of the action works

// Set NumeroContratto property to certain value when a new document is created.
   importClass(Packages.com.filenet.api.action.Create);
   function preprocessObjectChange (sourceObj)
   {
      // Verify that the pending action is a create action.
      var actions = sourceObj.getPendingActions(); 
      for ( var i = 0; i < actions.length; i++ )
      {
         if ( actions[i] instanceof Create ) 
         {
            // Set NumeroContratto property to "777"
            sourceObj.getProperties().putValue("NumeroContratto", "777");
            return true;
         }
      }
      return false;
   }

and this is the Java implementation:

package com.finmeccanica.spc.ecm.filenet.cp.actionhandler;

import com.filenet.api.action.*;
import com.filenet.api.core.IndependentlyPersistableObject;

public class AddPropertiesToObjectCP implements
        com.filenet.api.engine.ChangePreprocessor {
    public boolean preprocessObjectChange(
            IndependentlyPersistableObject sourceObj) {
        try {
            PendingAction actions[] = sourceObj.getPendingActions();
            for (int i = 0; i < actions.length; i++) {
                if (actions[i] instanceof Create) {
                    sourceObj.getProperties()
                            .putValue("NumeroContratto", "777");
                    return true;
                }
            }
            return false;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}

What is the problem?
I couldn't get the preprocessor to work implementing it in Java. Despite I fill the fields with the name of the Java class handler and the code module title

when I click to save the change preprocessor action, the system always tells me that it can't find the class:

FNRAC1005E The 'PDGOV CP Add PropertiesToDocument Action' object was not saved.

User response: Refresh the object, reenter your changes, and try again, or contact your system administrator.

Exception details: Unable to load event handler class from either associated code module or system classpath: com.finmeccanica.spc.ecm.filenet.cp.actionhandler.AddPropertiesToObjectCP. Message was: com.finmeccanica.spc.ecm.filenet.cp.actionhandler.AddPropertiesToObjectCP

The jar I uploaded contains the class in the right package and the code module's content is not corrupted.

Am I missing something? Do I have to configure something else?

Answer 1

You are not missing something in your code. I replicated your steps and did receive the same error when I attempted to convert an existing Change Preprocessor Action from a JavaScript type to a Java class type. It could not find the code module.

However, when I created a new Change Preprocessor Action using the same CodeModule, it worked fine. The difference being when you create a new one, you are prompted to Browse for your code module rather than typing its name.

To fix, don't convert your existing action from a JavaScript type. Create a new Change Preprocessor Action instead, selecting Java type from the start.