This section describes advanced human workflow concepts.

• Rule-based Routing

  You can use Oracle Business Rules to dynamically alter the routing flow. If used, each time a participant completes their step, the associated rules are invoked and the routing flow can be overridden from the rules.

  For more information, see How to Specify Advanced Task Routing Using Business Rules.

• Rule-based Participant Assignment

  You can use Oracle Business Rules to dynamically build a list of users, groups, and roles to associate with a participant.

  For more information, see Assigning Task Participants.

• Stages

  A stage is a way of organizing the approval process for blocks of participant types. You can have one or more stages in sequence or in parallel. Within each stage, you can have one or more participant type blocks in sequence or in parallel.

  For more information, see Assigning Task Participants.

• Access Rules

  You can specify access rules that determine the parts of a task that assignees can view and update. For example, you can configure the task payload data to be read by assignees. This action enables only assignees (and nobody else) to have read permissions. No one, including assignees, has write permissions.

  For more information, see Introduction to Access Rules.

• Callbacks

  While human workflow supports detailed behavior that can be declaratively specified, in some advanced situations, more extensible behavior may be required. Task callbacks enable such extensibility; these callbacks can either be handled in the invoking BPEL process or a Java class.

  For more information, see Specifying Java Callbacks.