topic Javascript API: child.delete() does not work in Alfresco Archive

Javascript API: child.delete() does not work

sbroussi — Tue, 30 May 2006 12:59:30 GMT

Hi,I'm trying to create a "Inbound" rule to:- detect all incoming ACP files- import the ACP in one folder (built-in action)- remove the ACP file (run a custom script)I have an error when I invoke "child.delete()"ERROR [repo.action.ActionServiceImpl] An error was encountered whilst executing the acti

Re: Javascript API: child.delete() does not work

kevinr — Tue, 30 May 2006 14:19:25 GMT

You have found a bug in the JavaScript engine, I've investigated it and found some (but not much!) information that suggests the fact that delete is a reserved word in JavaScript is causing intermitent problems with the JavaScript->Java method resolution (see this blog and search for "Java overloaded method resolution in JavaScript" section if you are interested).

It looks like sometimes it causes a problem and other times it does not - so I've changed the API call from node.delete to node.remove see http://wiki.alfresco.com/wiki/JavaScript_API#Modifying_and_Creating_Nodes and it will be available in the next 1.3 drop.

Thanks for spotting this!

Kevin

Re: Javascript API: child.delete() does not work

sburky — Tue, 14 Feb 2012 10:32:42 GMT

hum hum.
Do y have same pb with workflow engine ?
I just want to delete all process instances of a workflow definition.
I can list them


   var def = workflow.getDefinition(wf);
   var instances = def.getActiveInstances();
   var instance,i;
   var retour="";
   
   for (i in instances)
   {
      instance = instances[i];      
      retour = retour + "instance : " + instance.id + " démarré le " + instance.getStartDate() + " : " + instance.getDescription();      
      if (del == true) {
//          instance.delete();
         retour = retour + " <b>supprimée</b>";
      }
      retour = retour + "<br>";
        
   }
   if ( retour == "")
      retour = "pas d'instances démarrées pour ce workflow " + wf;
   return (retour);
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

but if i un-comment the line instance.delete()

i have an incomprehensible error :

Failed to execute script 'workspace://SpacesStore/dd674fbd-9abd-44fb-a189-403ae4c4737d': il manque un nom après un opérateur '.' (workspace://SpacesStore/dd674fbd-9abd-44fb-a189-403ae4c4737d#16)
caused by: org.mozilla.javascript.EvaluatorException: il manque un nom après un opérateur '.' (workspace://SpacesStore/dd674fbd-9abd-44fb-a189-403ae4c4737d#16)

Re: Javascript API: child.delete() does not work

kevinr — Tue, 14 Feb 2012 11:12:40 GMT

I think you want to use child.remove() as "delete" is a reserved method/word in javascript.

Kev

Re: Javascript API: child.delete() does not work

sburky — Tue, 14 Feb 2012 11:17:10 GMT

yes but in my case it's not the child i want to remove …
I want to kill workflow instance, and the remove method doesn't exist on JscriptWorkflowInstance object

I can use cancel but it's not the same fonctionnality

Re: Javascript API: child.delete() does not work

kevinr — Tue, 14 Feb 2012 11:41:09 GMT

OK I see what you mean - JscriptWorkflowInstance public void delete();
That is a bug: No JavaScript host object can have a delete() method as it is reserved. That method will need renaming (to remove()! or similar which is why it is remove() on scriptnode). I will raise an issue and get it fixed.

Cheers,

Kev

Re: Javascript API: child.delete() does not work

kevinr — Tue, 14 Feb 2012 11:43:10 GMT

https://issues.alfresco.com/jira/browse/ALF-12817

Re: Javascript API: child.delete() does not work

sburky — Tue, 14 Feb 2012 12:38:55 GMT

yes

Re: Javascript API: child.delete() does not work

jpotts — Tue, 28 Feb 2012 16:43:11 GMT

I think you can work around the reserved word problem by using the bracket syntax, like this:

instance['delete']();

Jeff

Re: Javascript API: child.delete() does not work

sburky — Tue, 28 Feb 2012 17:42:15 GMT

hum … it works
I don't know Javascript permits to run a method of an object by calling it on an array …..
thanks Jeff

Re: Javascript API: child.delete() does not work

kevinr — Tue, 28 Feb 2012 20:38:05 GMT

Neat trick. A function on a javascript object is just a property of the object like any other property and all properties can be accessed using the array notation.

Re: Javascript API: child.delete() does not work

sburky — Wed, 29 Feb 2012 08:57:28 GMT

ok for accessing !! but then to run a method by accessing throw the array …
it's no so secure… but that's this language !