Policy method 'beforeDeleteNode' gives an invalid NodeRef

[nicolasraoul]

I want to perform something just before a node is deleted, so I implemented the "beforeNodeDelete" policy:

public void beforeDeleteNode(NodeRef node) {
   if ( nodeService.hasAspect(node, MYASPECT) )
      doSomething();
}‍‍‍‍

As expected, this method is called when I click on "delete" in the Web Client.
But when I use NodeService on the node (the "hasAspect" line above), I get an exception saying the node does not exist:

InvalidNodeRefException: Node does not exist: workspace://SpacesStore/6ea81fbd-f911-4884-a2a7-dea408a86c04‍

Why offer the NodeRef in the prototype of beforeDeleteNode(NodeRef node) if this NodeRef is invalid ?!
Can someone enlighten me?

Note: However, I can access this workspace://SpacesStore/6ea81fbd-f911-4884-a2a7-dea408a86c04 node using the node browser.

[derek]

Hi,
The NodeRef should be valid during beforeDeleteNode.  Can I see the code that sets up the policy callback, please?
Regards

[nicolasraoul]

Hello Derek!
Here is how I set up the policy callback:

public void initialize() {
   this.policyComponent.bindClassBehaviour(
         QName.createQName(NamespaceService.ALFRESCO_URI,"beforeDeleteNode"), 
         QName.createQName("http://www.somecorp.co.jp/", "standardDocument"),
         new JavaBehaviour(this,"beforeDeleteNode",NotificationFrequency.TRANSACTION_COMMIT));
}‍‍‍‍‍‍

<bean id="deletePublishedContentPolicy" class="jp.co.somecorp.workflows.DeletePublishedContentPolicy" init-method="initialize">
   <property name="policyComponent" ref="policyComponent"/>
   <property name="nodeService" ref="nodeService"/>
   <property name="fileFolderService" ref="fileFolderService"/>
</bean>‍‍‍‍‍

Thanks for caring! 🙂

[derek]

Hi, Nicolas
If you use the default NotificationFrequency, then you will get the notification as soon as it happens rather than at the end of the transaction, by which time the node really is gone.  Naturally, should should not be trying to change the node you are about to delete but you could copy it and so on.  I hope this helps.
Regards

[nicolasraoul]

Thanks so much Derek! 
Indeed, I changed TRANSACTION_COMMIT to EVERY_EVENT and it works!