embeddable | Embeddable ES module to Easily embed NFTs in any website

I could imagine the standard bi-directional association using @OneToMany being a maintainable yet performant solution.

To mitigate n+1 selects, one could use e.g.:

• @EntityGraph, to specify which associated data is to be loaded (e.g. one user with all of it's posts and all associated votes within one single select query)
• Hibernates @BatchSize, e.g. to load votes for multiple posts at once when iterating over all posts of a user, instead having one query for each collection of votes of each post

When it comes to restricting users to perform accesses in less performant ways, I'd argue that it should be up the API to document possible performance impacts and offer performant alternatives for different use-cases.

(As a user of an API one might always find ways to implement things in the least performant fashion:)

By declaring the method Customer getById(CustomerId id); in your CustomerRepository interface, you chose to let your repostory selectively expose the corresponding method with the same signature from the standard spring-data repository methods, as explained by the Repository java doc:

Domain repositories extending this interface can selectively expose CRUD methods by simply declaring methods of the same signature as those declared in CrudRepository.

Different to what the doc says, this also includes methods from JpaRepository.

In the case of Customer getById(CustomerId id);, you therefore invoke the JpaRepository method with the same signature: T getOne(ID id);, which only invokes EntityManager#getReference , as suggested by it's doc:

[...] Returns a reference to the entity with the given identifier. Depending on how the JPA persistence provider is implemented this is very likely to always return an instance and throw an {@link javax.persistence.EntityNotFoundException} on first access. Some of them will reject invalid identifiers immediately. [...]
@see EntityManager#getReference(Class, Object) for details on when an exception is thrown.

When calling EntityManager#getReference, Hibernate first returns a non-initialized proxy of the Entity without executing any SQL statement at all, which is why your method only returns the non-initialized entity.

To fix this, you could change your service logic as follows:

Looks like it was an issue on Wistia's end due to an update according to their support. Always seemed like that as issue was in their api.js file. It works now.

It sounds like you're probably building your Flutter app using Android Studio (vs. VSCode, or the Flutter CLI). Please try the suggestions in this thread: Could not download kotlin-compiler-embeddable.jar

• Ensure you're not in offline mode:

  • Open the Preferences window by clicking File > Settings (on Mac, Android Studio > Preferences).

  • In the left pane, click Build, Execution, Deployment > Gradle. Check the Offline work checkbox off.

  • Click Apply or OK.

• Update the library version:

  • Click Dependencies > Find and Click org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.21 (or whatever your current version is)
  • Under Details > update section, click [update variable] > [update dependencies]

Please confirm your build environment (A/S?); please let us know if you resolved the problem.

You have to create the @EmbeddedId as you mentioned, and then in the ProviderPractitionersEntity attributes (ProviderEntity and CompanyPractitionerTypeEntity) add @MapsId with the name of the property in the composite id.

So first create the composite id:

You need to wrap your keys in quotes to support such characters, like this:

Yes that's how JPA does updates. There is not an update method.

I suggest you let it execute the select queries if you do not execute saves too often.

I wouldn't definitely try to reuse prices between Offers. The reason is that you might change that price for whatever reason and it will inadvertently change for all Offers. To me this is just asking for troubles and bugs to appear. Unless there is a very good reason in terms of your business case that really makes it mandatory for doing so, I wouldn't do it.

Having written this, with the information that you gave I would definitely go with @Embeddable because it does seem to be. very beneficial to have a separate entity and table for the Price.

I have the entities Band and Musician and a ManyToMany relationship between them with an association table BandMusician.

What I wanted was to create the entity Musician and the relationship (BandMusician) in the same request.

As far as I can gather it is not possible, because in order to create a record in the association table (BandMusician), I would have to have the musician (I'm creating in this request) already created.

I tried everything just to see if it was POSSIBLE and wasn't able to do it. But even if it was possible, it would be a very bad practice, since it would make the class too tightly coupled.

The clear solution was to create only the Musician with this request, and then send another request to create the connection between Band and Musician.

I also tried to create many entries in the BandMusician table with one request, which was also impossible, because the JsonDeserializer table doesn't seem to accept List<> as a return type. I was trying to avoid making a lot of requests to create the relationship entries (for a musician that is in five bands, for example), but it seems it is better to keep things clear and simple.

I now save one musician-band relationship per request: