ManyToMany entities management

[danielpetisme]

The current version of the Entity Framework Core does not support a Many To Many relation with an implicit (technical) join table. This table must be an explicit entity.

Let's take the example of the Operation and Label entity. Thanks to Spring Data a Java Dev can simply define a collection of Labels in the Operation entity and a collection of Operations in the Label one. All the data piping is handle by the framework. With Entity Framework Core, an explicit OperationLabel entity must be declared. This constraints force JHipster.Net to :

• generate code to actually manage the relation (in which layer? service?)
• use Dtos By default for data exposition to mimic the Java Data objects.

[jdubois]

Adding a $100 bug bounty here as this is very important and very hard!