Using ContextResolver to register ObjectMapper in runtime - client

Question

We're using JAX-RS (Jersey implementation) to call to external systems.
On JAX-RS Client's creation I'm registering the below context resolver to use custom ObjectMapper:
public class JacksonObjectMapperProvider implements ContextResolver<ObjectMapper>
{
#Override
public ObjectMapper getContext(Class<?> type)
{
ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT, true);
mapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
mapper.configure(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES, false);
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
mapper.configure(SerializationFeature.WRITE_NULL_MAP_VALUES, false);
mapper.configure(SerializationFeature.WRITE_EMPTY_JSON_ARRAYS, true);
mapper.setSerializationInclusion(Include.NON_NULL);
return mapper;
}
}
But I don't want to have the ObjectMapper defined in JacksonObjectMapperProvider. I want JacksonObjectMapperProvider to be able to retrieve it in runtime from somewhere, or have someone set the ObjectMapper on JacksonObjectMapperProvider.
I cannot do something like bellow, because the ObjectMapper is defined on some instance that creating the jax-rs Client. And here I don't have a reference to that instance:
public class JacksonObjectMapperProvider implements ContextResolver<ObjectMapper>
{
#Override
public ObjectMapper getContext(Class<?> type)
{
return someService.getObjectMapper();
}
}
Is there another way to do it?
Is there a way to pass data to JacksonObjectMapperProvider when registering on Client?

Answer 1

The solution is easier then I thought, instead of registering the class:
ClientConfig clConfig = new ClientConfig();
client.register(JacksonObjectMapperProvider.class);
as I did, you can register an instance of the class, and on instance creation pass whatever you want:
ClientConfig clConfig = new ClientConfig();
client.register(new JacksonObjectMapperProvider(objectMapper));
The updated provider:
public class JacksonObjectMapperProvider implements ContextResolver<ObjectMapper>
{
private ObjectMapper mapper;
public JacksonObjectMapperProvider(ObjectMapper mapper)
{
this.mapper = mapper;
}
#Override
public ObjectMapper getContext(Class<?> type)
{
return mapper;
}
}