Unmapped values, when using @JsonTypeInfo [DATAREST-166]

Johannes Hiemer opened DATAREST-166 and commented

At the moment I have the following scenario setup: I have a class called Test, which is base class for different entities. This class gets extended by ExtendedTest. To do a POST on their repositories I am using the following URL and body:

POST http://localhost:8080/web/tests
{ "entities" : ["iorioriooi", "iufiuuifui"],
  "extendedEntities" : "contents123" }

200 OK
{ "entities" : [ "iorioriooi", "iufiuuifui" ],
  "links" : [ {
    "rel" : "self",
    "href" : "http://localhost:8080/web/tests/5243c4aba0eef1cbee89c5ef"
  }]}

As you can see here, although no exception was thrown extendedEntities was not persisted. Afterwards I added @JsonTypeInfo(use=JsonTypeInfo.Id.CLASS, include=JsonTypeInfo.As.PROPERTY, property="@class")
to Test and tried again. My request looked all the same, except the specification of the class:

POST http://localhost:8080/web/tests
{ "@class" : "de.model.nosql.test.ExtendedTest",
  "entities" : ["iorioriooi", "iufiuuifui"],
  "extendedEntities" : "contents123" }

200 OK
{ "extendedEntities" : "contents123",
  "entities" : null,
  "links" : [ {
    "rel" : "self",
    "href" : "http://localhost:8080/web/extendedTests/5243c632a0ee8d4f2f795aa6"
  }]}

As you can see now, the class ExtendedTest is used, and extendedEntities is filled, while entities from Test is ignored. But that's not always the case. I added String baseEntities to test, whether all types are ignored when doing a POST via the @class annotation. Again, the request URL was the same:

POST http://localhost:8080/web/tests
{ "@class" : "de.model.nosql.test.ExtendedTest",
  "entities" : ["iorioriooi", "iufiuuifui"],
  "extendedEntities" : "contents123",
  "baseEntities" : "contents123" }

200 OK
{ "extendedEntities" : "contents123",
  "entities" : null,
  "baseEntities" : "contents123",
  "links" : [ {
    "rel" : "self",
    "href" : "http://localhost:8080/web/extendedTests/5243c71da0ee6310f996be26"
  }]}

As you can see here, the baseEntities not being a list and instead just a String, are not ignore and working properly. This applies to all objects not nested in a list.

I attached the source files, as well as the screenshots of all three test runs. Any idea why this happens?

Affects: 2.0 M1 (Codd)

Attachments:

• test.zip (1.52 kB)
• testRepositories.zip (921 bytes)
• with jsontype.png (206.46 kB)
• with jsontype and String in base class.png (229.87 kB)
• without jsontype.png (209.00 kB)