Overview of hooks

A hook is an entry point, like a trigger, to a piece of code that runs at specific points during a user's client session. Rational® ClearQuest® supports the following types of hooks:

• Field hooks. Use field hooks to check a field value and possibly adjust other fields. For example, you can use a field hook to validate the contents of a field or assign it a default value.
• Action hooks. Use action hooks to implement tasks at key points in the change request lifecycle. Unlike field hooks, action hooks are typically associated with events that affect the entire change request, not just one particular field. For example, you can use an action hook to validate the entire change request and send e-mail notifications when the action is complete.
• Record scripts. Use record scripts to perform specific tasks at runtime. Record scripts are specific to a record type and are usually associated with form controls.
• Use global scripts to define libraries of routines that can be shared by all record types in your schema.

In this module you will perform the following exercises: