topic Re: Custom action on deleted Noderef in Alfresco Archive

Custom action on deleted Noderef

mangar — Fri, 05 Oct 2012 01:53:20 GMT

I have an action that needs to be triggered on a delete action. I write my action and hook it to a space rule. The action triggers fine.However, I get an errorrg.alfresco.service.cmr.repository.InvalidNodeRefException: Node does not exist:‍ at this line of codetring fileName = (String) nodeServ

Re: Custom action on deleted Noderef

mrogers — Fri, 05 Oct 2012 07:39:57 GMT

You need to use the "before delete" event if you want to read any of the node's properties.

Re: Custom action on deleted Noderef

mangar — Fri, 05 Oct 2012 15:35:45 GMT

After some research, I see that I need to implement a policyComponent and override beforeDeleteNode().

It also looks like that this action would be called for every piece of content. Is there a way to make this only happen in a certan folder, or for a certain kind of content?

I have gotten pretty good at writing actions, but this is lost on me. Do you have any examples?

Re: Custom action on deleted Noderef

lista — Wed, 10 Oct 2012 12:18:33 GMT

Another option is to find the node in the archives store, and get the properties from there.

Re: Custom action on deleted Noderef

mangar — Tue, 16 Oct 2012 18:45:56 GMT

Good idea. However I can't seem to get the node from the ArchiveService. in my executeImpl () method i have this:

         System.out.println("AtionedUponNodeRef Node:"+actionedUponNodeRef.getId()+actionedUponNodeRef.getStoreRef().getIdentifier());
         NodeRef origNodeRef = archiveService.getArchivedNode(actionedUponNodeRef);   
         System.out.println("Original Node:"+origNodeRef.getId()+origNodeRef.getStoreRef().getIdentifier());‍‍‍

with the output being:

AtionedUponNodeRef Node:7adb1a27-6fcf-4321-8807-448bb9edf928SpacesStore
Original Node:7adb1a27-6fcf-4321-8807-448bb9edf928SpacesStore
‍‍‍

They are the same node.

How do I get the archived node?

Re: Custom action on deleted Noderef

mangar — Thu, 08 Nov 2012 01:41:54 GMT

The solution is a custom policy using the before delete node.

Here is an excellent tutorial by Jeff Potts on behaviours: http://ecmarchitect.com/images/articles/alfresco-behavior/behavior-article.pdf

here is my code snippet:

public class DeleteAsset implements NodeServicePolicies.BeforeDeleteNodePolicy  {
   
   private PolicyComponent policyComponent;
   private Behaviour beforeDeleteNode;
   
   public void init() {
      this.beforeDeleteNode = new JavaBehaviour(this,"beforeDeleteNode",NotificationFrequency.EVERY_EVENT);
      this.policyComponent.bindClassBehaviour(QName.createQName(NamespaceService.ALFRESCO_URI,"beforeDeleteNode"), 
            QName.createQName(MyModel.NAMESPACE,MyModel.ASSET_CONTENT_TYPE), this.beforeDeleteNode);
   }
   
   @Override
   public void beforeDeleteNode(NodeRef node) {
      System.out.println("beforeDeleteNode!");
      try {
         your code here         
      } catch(Exception e) {
         e.printStackTrace();
      }
      
   }
}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Just add this just like any other spring bean (See tutorial) and away you go. One key is the NotificationFrequency must be EVERY_EVENT so you can use your NodeService (or whatever) before the node is deleted!

Hope this helps someone.