Component queues make it possible to process a workflow step by using an external entity, such as a Java™ object or Java Message Service (JMS).
By using Process Configuration Console, you configure a component queue with an adapter, either Java or JMS. The Java adapter allows you to expose public methods from a Java class as operations on a queue. The JMS adapter enables you to publish workflow data to a JMS queue, also by using operations. By using Process Designer, the workflow author adds a component step to a map and selects operations for that step from the list of component queues. The workflow author also specifies the appropriate expression for each operation parameter.