Message filters

You can filter the way messages are received in two different ways: Java Message Service (JMS) filters and HCL OneTest API filters.

Important: When you use filtering, the system under test must be correctly configured. Messages that are filtered out are silently discarded. HCL OneTest™ API does not produce any warnings or errors.

Java™ Message Service (JMS) filters

The Message Selector field under Subscriber Configuration (see Subscriber options) accepts standard JMS filtering expressions (message selectors). When used, HCL OneTest™ API receives only messages that match the specified selector.

For example, if MyId='585858' is entered, only messages with the header field "MyId" having a value of 585858 is received. To send matching messages in an HCL OneTest™ API publisher, you would configure a message property as shown.

Note: Filtering is performed on message header properties, and matching messages are passed to HCL OneTest™ API (In other words, the JMS server filters the messages, not HCL OneTest™ API). This setup is useful in environments that share a single JMS queue or topic. By getting the applications to set header properties, you can separate messages logically. HCL OneTest™ API can interact with the messages from Application A without affecting the messages of Application B.

HCL OneTest™ API filters

After messages are passed to HCL OneTest™ API, they can be further filtered, using header and body fields, with the configuration in the Filter tab.

In this case, JMSDestination must equal "business.inventory global" and JMSCorrelationID must equal "32458". Otherwise, HCL OneTest™ API discards the message.