How to Rollback the webscript not using WebScriptException?

[kasperba]

How do I make Alfresco rollback the transaction when my DeclarativeWebscript discovers an error?

All my REST-calls return an XML (with the Freemaker Template) that has a standard format containing a status-tag. So I am not interested in the error generated when the WebScriptException is thrown.

Can I call a specific function in java or should I override the WebScriptException?

[davidc]

Are you aware of http://wiki.alfresco.com/wiki/Web_Scripts#Response_Status

I'm not sure exactly of your requirement, but if an exception is thrown, the transaction will roll-back.  And all exceptions are caught by the Web Script runtime and rendered as a response (with a status).

The only possible issue is how to mark rollback within javascript.  Is that your issue?

[kasperba]

I don't use javascript with Alfresco 🙂

I want to do the following handle an exception in a java class of type DeclarativeWebScript gracefull by doing the following

- catch exception
- rollback the transaction
- set a custom statuscode in the model that I return
- use the Freemaker-template for the method (no exception/error FreeMarker template)
- the FreeMaker-template returns its XML as normal with the statuscode.

@Override
   protected Map<String, Object> executeImpl(WebScriptRequest req, WebScriptStatus status) {
      
      Map<String, Object> model = new HashMap<String, Object>(7, 1.0f);

      Integer statuscode = Status.STATUS_INTERNAL_ERROR;

      try {
         SuperObject so = null;

         so.thisWillTriggerException();

         statuscode = Status.SUCCESS;
      }
      catch (…) {
         // Rollback transaction and use the same
         // FreeMaker-template as it would if no
         // exception was triggered.
         statuscode = Status.THIS_TOTALLY_FAILED;
      }
       
      model.put("statuscode", statuscode);
       
      return model;
   }

Is this more clear concerning what I want to do?