Roger Che created OLINGO-1261:
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Summary: The target binding type should be available from
Navigation Property
Key: OLINGO-1261
URL: https://issues.apache.org/jira/browse/OLINGO-1261
Project: Olingo
Issue Type: Bug
Components: odata4-server
Affects Versions: (Java) V4 4.4.0
Reporter: Roger Che
Attachments: Zoo.xml
The Navigation Property can declare with a (collection of) parent type and bind
to a sub type EntitySet. See
org.apache.olingo.client.core.metadatavalidator.EdmTypeValidator#validateNavigationBindingPaths
But in the runtime, the Navigation Property always return a type of the declare
type but not the binding type. This can cause problem when the Navigation
Property is declare with a parent type while in the EntitySet/Singleton it is
bind to the child type Entity Set. See the uploaded Zoo.xml. The problems
includes.
# When sending GET request to [http://localhost:8080/zoo.svc/Zoo/Animals.] I
expect to get the binding type 'Tiger' for UriResourceNavigation 'Animals'.
Because in the metadata, the Singleton Zoo bind the Animals to
Collection(Tiger). But there is no such API. I can only use the API
UriResourceNavigation#getProperty()#getType() to get the declaring type
'Animal'. Since I cannot get the actual binding type. I cannot serialize the
entity with a Tiger type which includes the property 'Weight'
# When sending POST request to do the deep insert to
[http://localhost:8080/zoo.svc/Zoo/Animals.] with the payload
\{"Id":"tiger-002", "Name": "test test", "Weight": 150}. I still expect to get
binding type 'Tiger' for UriResourceNavigation 'Animals'. So that i can
deserialize the bod to an entity of Tiger. But I can only get the type 'Animal'
for UriResourceNavigation 'Animals' from existing API. And it will throw me an
exception telling that
"'Weight' can not be mapped as a property or an annotation."
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