[Building Sakai] EntityCustomAction problems

[Stephen Marquard]

Here's an example of a VIEW_NEW custom action (calculate):

https://source.sakaiproject.org/contrib/sms/sms/trunk/impl/src/java/org/sakaiproject/sms/entity/SmsTaskEntityProviderImpl.java

For the case below, if you want to create a chat channel, you should rather use the standard REST semantics to create a new entity in the chat-channel provider, rather than a custom action.

Also when you are using EB, there is no tool placement, so this:

         Placement placement = toolManager.getCurrentPlacement();

is not meaningful.

Regards
Stephen

>>> Adrian Fish <a.fish at lancaster.ac.uk> 2010/01/20 02:29 PM >>>
Does anybody have a working example of a VIEW_NEW EntityCustomAction 
that accepts posted data? The code below throws a RuntimeException thus:

WARN Direct request failure: RuntimeException:Fatal error trying to 
execute custom action method: create:new:create:Direct request failure: 
RuntimeException:Fatal error trying to execute custom action method: 
create:new:create:

@EntityCustomAction(action="create",viewKey=EntityView.VIEW_NEW)
    public boolean create(EntityReference ref, Map<String, Object> params) {

        try
        {
        String title = (String) params.get("title");
        String description = (String) params.get("description");

        LOG.debug("Title: " + title);
        LOG.debug("Description: " + description);


        Placement placement = toolManager.getCurrentPlacement();
        String siteId = placement.getContext();

        try {
            
chatManager.createNewChannel(siteId,title,false,true,placement.getId());
            return true;
        } catch(PermissionException pe) {
            throw new SecurityException("You do not have permission to 
create channels");
        } catch(Exception e) {
            LOG.error("Failed to create channel",e);
            return false;
        }
        }
        catch(Throwable t)
        {
            System.err.println("WHOOPS! ");
            t.printStackTrace();
            return false;
        }
    }


Cheers,

Adrian.

-- 
==================================
Adrian Fish
Software Engineer
Centre for e-Science
Bowland Tower South C Floor
Lancaster University
Lancaster
LA1 4YW
email: a.fish at lancaster.ac.uk 

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