findOne in interface cannot be applied to given types about tut-rest

[handeyeco]

Actually ended up changing:

return this.bookmarkRepository.findOne(bookmarkId);

to:

Optional<Bookmark> bookmark = this.bookmarkRepository.findById(bookmarkId);
if (bookmark.isPresent()) {
    return bookmark.get();
} else {
    return null;
}

The application compiles and runs as expected so far. Would love feedback on whether this is the way to go or not.

[VictorSago]

@RaMdsC
This might indeed be the case. Looking at the documentation for Spring v1.5.x the method findOne() is inherited from the CrudRepository interface and has the signature:

T findOne(ID id)

while in the current version of Spring this method is inherited from QueryByExampleExecutor and has the signature:

<S extends T> Optional<S> findOne(Example<S> example)

In the current implementation of CrudRepository this method does not exist.

[davidjlynn]

+1

[RaMdsC]

+1

[VictorSago]

Had exactly the same problem. Also tried to replace findOne(bookmarkId) with getOne(bookmarkId). Ended up with the same solution as @matthewbryancurtis - using an Optional and returning null when there is no bookmark. Even though it doesn't seem right to return null when the method declares Bookmark as the return type.

But here is the funny thing. A slightly elder version of the same tutorial found here: https://github.com/joshlong/bookmarks/tree/tutorial does compile (in the end, if skipTests is set) and can be made to run as expected. Don't know why.

[RaMdsC]

Tested and working straightaway on clean Ubuntu 17.10.
Apache Maven 3.5.0
OpenJDK 1.8.0_171
Maven defaults to Spring Boot v1.5.1.RELEASE

I will post further updates as i do some more testing, it seems like an incompatibility issue.

UPDATE 1:
Tested and also working straightaway on clean Ubuntu 16.04.
Apache Maven 3.3.9
OpenJDK 1.8.0_171
Maven defaults to Spring Boot v1.5.1.RELEASE

[gregturn]

Resolved via 7f3644e