locking a task?

[christoph_retti]

Hi, I would like to be able to lock a task so that only one specific user can work on it

In the API I find the methods

addUserIdentityLink(String taskId, String userId, String identityLinkType)

addCandidateUser(String taskId, String userId)
claim(String taskId, String userId)
setAssignee(String taskId, String userId)
setOwner(String taskId, String userId)

and have a few questions on them:

(a) Which one of the above methods would be appropriate?
(b) Is there a documentation of the semantics of asignee, owner, candidate?
© Could I use a own IdentityLink, e.g. locked for this purpose?

Also I was asking which TaskQuery I should use to get all tasks that I could work on - so where I am owner, candodate or assignee?

  regards, c

[ronald_van_kuij]

most examples there are of activiti, use the setAssignee(…) and or claim(…) Assigned tasks do not show up on the group/candidate task lists and therefor 'locks' it. Both are kind of the same with minor differences (mentioned in the api/java doc afaik)

Tip: buy the Activiti in Action book, it is really good (and no I'm not affiliated)

[christoph_retti]

Hi Ronald, I would buy the book, but as far as i know

  http://www.manning.com/rademakers2/

it is still beeing written and there are only 2 of 4 parts available?

  c

[trademak]

Hi,

Right, it's still being written. But you can already download the MEAP version with the chapters already available.
I expect that in the coming months you'll see a lot more chapters!

Best regards,

[christoph_retti]

already bought it

is there anything speaking against using custom identity links?