Service MQ Rules allow external systems to access your application data using the WebSphere MQ middleware messaging standard.
At runtime, an MQ listener, linked to a service MQ rule, waits and listens for incoming messages on a specified WebSphere MQ queue. You can configure MQ Listener to access text from an external system and place it in a clipboard property as follows:
- Create an MQ Service rule.
- Create an MQ Listener rule.
- Place the desired text in the queue.
When you run this configuration, the following error may appear in the log file:
com.pega.pegarules.pub.PRRuntimeException: Attempting to read string from MQ > 1M in length. Check length prefix on string data.
This error is caused by an incorrect setting in the Data Type field on the Request tab of the Connect MQ rule form:
To resolve this issue, select
All Chars from the Data Type drop-down menu and save the updated rule. This allows Process Commander to read the text in the queue as ASCII characters and manages the data correctly:
After making the rule change, stop and re-start any MQ Listeners that were running when you made the change.