These methods allow to perform actions based on the entity before the
CRUD operation is executed.

Additionally, added AnswerController for API v3.

Rooms are now updated when Content is created or deleted.

Update handling is NYI.

Tom Käsler authored 7 years ago and Daniel Gerhardt committed 6 years ago

See !75.

Renamed UserAuthentication to ClientAuthentication and moved it to v2.
API v3 uses its own model.

Finding by ownerId depends on a new database view and is NYI.

Default to 'vnd.de.thm.arsnova.v3+json' if no specific content type is
requested via Accept header or path version prefix.

Views are now checked for existence instead of creating them on every
startup.

Decide between 'vote', 'school' and 'abcd' target format based on count
of AnswerOptions.

When null was set as database key, the whole view would be requested
before this change.

Revisions are copied by default but explicitly skipped for
V2ToV3Migration.

Using format caused problems because Jackson does not support multiple
type names being mapped to a single class.

This reverts commit 96b0cf42a7f5e47652f26887acc5957b203b2c0c.

For now, only Answer and AnswerStatistics migrations are tested.