Unable to delete relationships in NEO4j using PUT/PATCH?DELETE [DATAREST-1301]

Fuzail Sarang opened DATAREST-1301 and commented

Using Spring Boot 2.1.0 with the Spring Boot Starter for Neo4j and Spring Data Rest with Spring Transactions.

Attached files to reproduce.

Scenario is the following

• Create Parent

curl -i -X POST -H "Content-Type:application/json" -d '{}' http://localhost:8080/parent

• Create Child

curl -i -X POST -H "Content-Type:application/json" -d '{}' http://localhost:8080/child

• Create association

curl -i -X PUT -H "Content-Type:application/json" -d "http://localhost:8080/parent/<id>" -H "Content-Type:text/uri-list"  http://localhost:8080/child/<id>/parent

• Attempt to delete association

curl -i -X DELETE  http://localhost:8080/child/1743/parent

Above will not delete the association as the Spring transaction is not started, instead it will use multiple Neo4J Transactions that will result in the relationship not being deleted. I have also attached a test which highlights the issues without the need for the rest calls. This has the same issue when updating using PUT/PATCH to remove associations.

Affects: 3.1.2 (Lovelace SR2)

Reference URL: https://stackoverflow.com/questions/25717127/handle-spring-data-rest-application-events-within-the-transaction

Attachments:

• Application.java (567 bytes)
• Child.java (553 bytes)
• ChildRepository.java (557 bytes)
• Parent.java (655 bytes)
• ParentChildTests.java (1.39 kB)
• ParentRepository.java (562 bytes)