starting a particular instance

RE: starting a particular instance

Dude — Mon, 12 Nov 2018 06:37:07 GMT

Starting particular node can be achieved by using the send message or task link.
Sending a message requires a link to the process model
Task link requires any active task to proceed.
To practice this you can make use of process management smart services and task services in the process model
For any other process node read its usage and available features. So that you can have a better idea to control them according to your requrements.

docs.appian.com/.../Smart_Services.html

RE: starting a particular instance

Sowrabha Rajashekar — Mon, 12 Nov 2018 06:02:12 GMT

Hi Bhargavi,

I would need to understand your process to suggest what is better.

Option 1: If its okay, split the Main Process Model, put the nodes that need to be started in a separate sub process and call that process using a!start process, on interface . Refer the community.appian.com/.../creating-flexible-processes as suggested by Robert to understand the design.

Option 2: If you need the main process to be active for the whole time until all these are done, use Set PV method, you can also use IFM Manager to set the PV, instead of Set/Get PV, to update the process variable.

Avoid using Send/Receive Messages, when you have alternatives. Hope this helps.

RE: starting a particular instance

bhargavip0001 — Sun, 11 Nov 2018 04:03:38 GMT

Hi Sowrabha Rajashekar , i can do in both the ways where i can start particular instance using send and receive messages with instance id, and other way what you told but which would be better way ?

RE: starting a particular instance

chandu — Fri, 09 Nov 2018 16:03:02 GMT

Hi Bhargavi,

You have a process model and some of the instances are running. Now you want to use send message to trigger only particular instances of that process model.

I believe when you are triggering the specific Instances means, at run time only you need to get the Destination Process instances id's and trigger the further Execution of those Process instances with Send Message event.

In the above scenario you are picking up the selected Process instance Id's based on a condition. Now have that condition present in a DB table.

Now periodically run a process with the help of timer event, pull the matching rows from the DB where your condition satisfies:

If rows are not present then you can end the process here.

If rows are coming up, then you design the same work flow that is done in the receive message event PM.

Once you start the work flow Make sure the existing row/ Matching should be updated to inactive so that we can avoid re triggering of the instances.

RE: starting a particular instance

Robert Shankin — Fri, 09 Nov 2018 13:56:46 GMT

Start process is much more fashionable that send message these days.
I'd recommend avoiding send message if you can.
I'm not clear on the use case, but I expect all community members interested in this thread would benefit from reading these playbook plays:
community.appian.com/.../creating-flexible-processes
and
community.appian.com/.../creating-memory-efficient-models

RE: starting a particular instance

bhargavip0001 — Fri, 09 Nov 2018 09:59:06 GMT

you mean send message event ??

RE: starting a particular instance

mohamedt808 — Mon, 05 Nov 2018 09:13:25 GMT

Hi Bhargavi,

Only sending the message to process model (i.e. to create new instance ) is deprecated we have to use start process smart service instead, where as sending message to already active instance is not deprecated. Refer here docs.appian.com/.../Send_Message_to_Process_Model.html

RE: starting a particular instance

Sowrabha Rajashekar — Mon, 05 Nov 2018 09:10:51 GMT

Also , Send Message to a Process Model has been deprecated, while Send Message to a Specific Process is allowed. So if you know the process instance Id, you can use this smart service to send messages to a process.
docs.appian.com/.../Send_Message_Event.html

RE: starting a particular instance

Sowrabha Rajashekar — Mon, 05 Nov 2018 09:03:18 GMT

Hi Bhargavi,

One way to do this without Send/Receive Messages, is using combination of a!startProcess and Get and Set Process Variables Smart Service. To start a node, when the value of a pv changes to desired.

The actual process model that needs to be started, should have a rule event,just before the node you want to start. Have a condition, using a pv, for ex : pv!startNode = true. Make the pv!startNode =false initially.

Create a process model that takes process instance id and process variable as input and uses Get and Set Process Variables Smart Service to set the PV. In this case to set pv!startNode = true.

And on the button click of the interface, call this process model using a!startProcess and pass the process instance id and pv!startNode value . And this process would set the pv and start the node.

Hope this helps. Lets see if other practitioners have better ideas.

RE: starting a particular instance

bhargavip0001 — Mon, 05 Nov 2018 05:44:32 GMT

Hi Krishna,

Thanks for the replay ,

I am fine with how to use that smart service but i wanted to know if send message event is going to depreciate means which one can be used to start particular instance ?? i cant start manually it should make automatic

Thanks,
Bhargavi

RE: starting a particular instance

krishnau3863 — Mon, 05 Nov 2018 05:25:30 GMT

Hi bhargavip0001,

---> AFAIK, Start Process Smart Service allows you to initiate a process from another process, a web API, or an interface. The new process is started asynchronously, and the process flow of the current process continues immediately after all activity-chaining completes.
---> But in your case, you want to start the particular process instance, in my view it is not possible through that smart service. you should manually go to the monitoring mode and start the particular instance.

Regards,
Krishna.

RE: starting a particular instance

bhargavip0001 — Mon, 05 Nov 2018 04:47:18 GMT

Hi,

I am able to start now using the same way but its written that
The option to start a process using the Send Message Event node has been deprecated, and will be removed in a future version of Appian. Use the Start Process smart service instead.

how tp user start process smart service to start particular instance ?

RE: starting a particular instance

Thenmozhi Mohanakrishnan — Wed, 31 Oct 2018 09:34:51 GMT

You can make use of Process Management Services smart service to start particular node in a process instance.

forum.appian.com/.../summary

RE: starting a particular instance

mohamedt808 — Wed, 31 Oct 2018 09:02:34 GMT

Hi,

If you know the process instance ID then using messaging you can Start / Restart any node in that process. Your target process should be configured with a receive message node .

From an Interface click start a process Instance that sends a message to your target process instances receive message node .

-Thoufiq.