[jboss-jira] [JBoss JIRA] (AS7-4334) RESTeasy: Cannot configure Jackson ObjectMapper via ContextResolver nor Application.getSingletons()

[Hendy Irawan (JIRA)]

Hendy Irawan created AS7-4334:
---------------------------------

             Summary: RESTeasy: Cannot configure Jackson ObjectMapper via ContextResolver nor Application.getSingletons()
                 Key: AS7-4334
                 URL: https://issues.jboss.org/browse/AS7-4334
             Project: Application Server 7
          Issue Type: Bug
          Components: REST
    Affects Versions: 7.1.1.Final
         Environment: JBoss AS 7.1.1
            Reporter: Hendy Irawan
            Assignee: Stuart Douglas


This doesn't work:

{code}
@Provider @Produces(MediaType.APPLICATION_JSON)
public class JacksonContextResolver implements ContextResolver<ObjectMapper> {

	private transient Logger log = LoggerFactory.getLogger(JacksonContextResolver.class);
	private ObjectMapper objectMapper;

	public JacksonContextResolver() throws JsonGenerationException, JsonMappingException, IOException {
		log.info("Using my own Jackson ObjectMapper");
		objectMapper = new ObjectMapper();
		objectMapper.configure(Feature.INDENT_OUTPUT, true);
		objectMapper.configure(Feature.WRITE_DATES_AS_TIMESTAMPS, false);
		objectMapper.configure(Feature.WRITE_DATE_KEYS_AS_TIMESTAMPS, false);
		
		log.info("Test date: {}", objectMapper.writeValueAsString(new DateTime()));
		log.info("Test pretty output: {}", objectMapper
				.writeValueAsString(new Article("Launching AksiMata",
						"AksiMata : Ada apa di sana?",
						"Webapp yang keren dan oke punya.", "Hendy Irawan")));
	}
	
	@Override
	public ObjectMapper getContext(Class<?> type) {
		return objectMapper;
	}
}
{code}

The log correctly tests the custom ObjectMapper works fine, however when returning the output, seems like it's still using the "default" ObjectMapper.

This also doesn't work:

{code}
@Override
public Set<Object> getSingletons() {
	Set<Object> singletons = new HashSet<Object>(super.getSingletons());
	ObjectMapper objectMapper = new ObjectMapper();
	objectMapper.configure(Feature.INDENT_OUTPUT, true);
	objectMapper.configure(Feature.WRITE_DATES_AS_TIMESTAMPS, false);
	objectMapper.configure(Feature.WRITE_DATE_KEYS_AS_TIMESTAMPS, false);
	singletons.add(objectMapper);
	return singletons;
}
{code}

Sample project to reproduce the issue is at:
https://github.com/soluvas/ear-sample/tarball/resteasy-jackson-bug

Bug is almost similar to #AS7-1408.

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