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From Nikhil Dhamapurkar <>
Subject RE: Idempotent behavior based on Limited Fields.
Date Thu, 18 Jan 2018 10:58:24 GMT

Bang on reply  ! I  sent the mail & realised that I can select the existing record and
update else create new.


From: Johan Doornenbal
Sent: 18 January 2018 15:56
Subject: Re: Idempotent behavior based on Limited Fields.

Hi Nikhil,
I am not entirely sure if I fully understand your use case. But from what I read
I would suggest to create some 'upsert' method that does a search on the params
you mentioned and creates a new record when the search does not return results.
An example of this pattern can be found in Estatio 1)
Best regards,
Johan Doornenbal+31 6 227 666 28


On Thu, Jan 18, 2018 11:15 AM, Nikhil Dhamapurkar  wrote:


We are receiving updates of appointment object on apache isis via swagger API. 

The Appointment object’s equals for identifying the Object is based on few
parameters which are part of the class, some fields like ‘status’ accept /
reject are to be updated, and are not part of identifying if the objects is

Any Idea if I can control the insert / update behaviour based on fields as part
of equals – I don’t have the primary key / id of the Object where I am updating.


Appointment can uniquely be identified by :

Apt between person1 and person2, date , start and end time. – fields like status
can have any value

If I get apt with different status it should end updating the status of existing
appointment based on these fields.



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