Migrating CAF Projects and .view Files to JSF Facelets Format
If you have existing Composite Application Framework (CAF) projects implemented with .view files, you can migrate those projects to JSF Facelet/XHTML support. You cannot change the project back to JSF .view file format after you migrate it. In addition, you can migrate individual .view files to .xhtml files.
For more information, see:
Migrating a JSF .view File Project
to JSF Facelets Format