Eclipse bug: This project has the JPA facet, but no JPA project could be created

Question

After restarting Eclipse, I get the following error in my project:

This project has the JPA facet, but no JPA project could be created. See the error log for more details.

Nothing I've done (clean project, maven update, etc) will get rid of the error. My JPA Content icon remains greyed out.

It looks like this was a resolved bug at Eclipse bugs...but then why am I still getting it? Should I submit a bug report to Eclipse?

Answer 1

This is a configuration problem of the project. To solve this problem go to the project properties, and in the node "project facets" unchecked JPA and apply the changes. Now you can checked JPA and apply again!

Answer 2

For me all the above didnt worked.

So I tried Project Properties>Validate. It solved my problem.

Answer 3

To get rid of this error in Eclipse Luna, I just did a right-click on the project and chose the "Validate" menu item.

Answer 4

1. Alt+Enter in the project
2. Go for Project facets
3. Uncheck JPA and accept
4. Right click in the project, go for Validate
5. Alt+Enter in the project
6. Go for Project facets
7. Check JPA` and accept