Connect-Cassandra method |
Use the Connect-Cassandra method to start a request/response interaction between the Pega 7 Platform and the external data store identified by a Connect Cassandra instance.
This method operates on a named clipboard page that is the source and destination of data mappings. Make sure the Step Page specified in the activity step that calls this method is set to the appropriate page name.
This method has one required and two optional parameters:
Parameter |
Description |
ServiceName |
Required. Enter the name of the Connect Cassandra instance you want to invoke. |
ExecutionMode |
Select to indicate the timing of execution:
|
EndPointURL |
Optional. Specify the URL of an external system to which you want to connect. A value specified for this parameter overrides the value set in the Connectionsettings of the Service tab of the Connect Cassandra rule. |
Operation |
Select the type of HTTP request:
|
The Connect-Cassandra method works as follows:
Run
— Executes the simulation activity synchronouslyRun In Parallel
— Executes the simulation activity in a separate requestorQueue
— Queues the simulation activityRun in parallel
— Executes in a separate requestor. (This temporary requestor has the same access group and clipboard as the original. At most 10 such child requestor sessions can be active at once.) Queue
— Creates a queue item based on the class and other characteristics identified in the Connect Request Processor, for later background processing by the Pega-IntSvcs agent.This method updates the pxMethodStatus property. See How to test method results using a transition.
Caution: Design the activity to detect and handle exceptions. If the Connect-Cassandra method with the RunInParallel check box selected fails in a way that causes the Connect-Wait method to be skipped, the child requestor can fail. If the limit of parallel requestors is then eventually reached, the parent requestor will fail as well. By default, the limit is 10 requestors in parallel; you can establish a higher or lower value in the prconfig.xml
file or Dynamic System Settings using the services/maxRequestorChildren
setting.
Connect-Wait method |