JSF Life Cycle
The Restore View phase
The Restore View phase
- Retrieves the component tree for the requested page if it was displayed previously OR
- Constructs a new component tree if it is displayed for the first time.
- Render Response phase
- If there are no request values, the JSF implementation skips ahead to the Render Response phase.
- This happens when a page is displayed for the first time.
- Otherwise, the next phase is the Apply Request Values phase.
- In this phase, the JSF implementation iterates over the component objects in the component tree.
- Each component object checks which request values belong to it and stores them.
- The values stored in the component are called “local values”.
- When you design a JSF page, you can attach validators that perform correctness checks on the local values.
- These validators are executed in the Process Validations phase.
- If validation passes, the JSF life cycle proceeds normally.
- However, when conversion or validation errors occur, the JSF implementation invokes the Render Response phase directly, redisplaying the current page so that the user has another chance to provide correct inputs.
- After the converters and validators have done their work, it is assumed that it is safe to update the model data.
- During the Update Model Values phase, the local values are used to update the beans that are wired to the components.
- In the Invoke Application phase, the action method of the button or link component that caused the form submission is executed.
- It returns an outcome string that is passed to the navigation handler.
- The navigation handler looks up the next page.
- Finally, the Render Response phase encodes the response and sends it to the browser.
- When a user submits a form, clicks a link, or otherwise generates a new request, the cycle starts a new.
Tags:
Java
