Hi All, I have a Process model to be exposed as a web service which has to

I think one way you can try to achieve this is by using a servlet plugin, by writing the list of pvs to Http Response.

Here is the link to the discussion: (Web Service API) forum.appian.com/.../5436

Link to download component is available as an attachment to that discussion.
The attached component helps in publishing servlet plugin as webservice and use it with external system.

Hi Monika,

We also have similar kind of requirment.Did you get the solution for the same?

Thanks in Advance.

Subha

As per my understanding the reason why this feature does not allow to return any parameter as output because
1. It launches a new process and we will be not sure when this process variable going to have value. so it is not wise to return any parameter as output.
2. But you can use callback design approach to overcome this problem.
3. Or have look on Web API OOB feature of Appian 7.9,this might help you.

forum.appian.com/.../Web_APIs.html
here is the link for Web API documnetation.

@ajinkyab277, I am not sure how Web API supports to return process variable. I am not sure does it support trigger process asynchronously?

On of the way can be - Process variables can be returned by creating process report with process model context and setting columns with process variable data. Then setup a Web API to return data which in turn calls query analytics function.

Web API can query data from Process reports.. but how to trigger process model in Web API either syncy or Async? Current Web API design only support get, not post or put verbs..

As far as I know using Web APIs it is not possible to call process model unless and until a function is created to do that. The approach which i suggested was in conjunction with calling process model as webservice and then using process id to get further data.