Description of problem:
Jsr310 and jdk8 fasterxml modules are not available from deployment without specific jboss-deployment-structure.xml

How reproducible:
Always

Steps to Reproduce:

• This can be tested if "<module name="com.fasterxml.jackson.core.jackson-annotations"/>" is added to ./modules/system/layers/base/com/fasterxml/jackson/datatype/jackson-datatype-jsr310/main/module.xml (see JBEAP-6673)

1. Create end-point with data types and special jdk8 types and allows

       @GET
       @Path("entity/get/json")
       @Produces(MediaType.APPLICATION_JSON)
       public DatatypeObject getJson() {
           DatatypeObject per = new DatatypeObject();
           per.setString("someString");
           per.setDate(new Date());
           per.setDuration(Duration.ofSeconds(5, 6));
           per.setDayOfWeek(DayOfWeek.FRIDAY);
           per.setOptionalString1(Optional.of("info@example.com"));
           per.setOptionalString2(Optional.<String>empty());
           return per;
       }
   

2. Implement custom ContextResolver in deployment. This code enables jsr310 and jdk8 fasterxml functionality. Example:

   @Provider
   @Produces( MediaType.APPLICATION_JSON )
   public class JacksonProducer implements ContextResolver<ObjectMapper> {
   
       private final ObjectMapper json;
   
       public JacksonProducer() throws Exception {
           this.json = new ObjectMapper()
                           .findAndRegisterModules()
                           .configure( SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false )
                           .configure( DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false );
       }
   
       @Override
       public ObjectMapper getContext( Class<?> objectType ) {
           return json;
       }
   }
   

3. Http request to REST end-point

Actual results:

{"string":"someString","optionalString1":{"present":true},"optionalString2":{"present":false},"duration":{"seconds":5,"zero":false,"negative":false,"units":["SECONDS","NANOS"],"nano":6},"date":"2016-10-27T13:02:11.991+0000"}

Expected results:

{"string":"someString","optionalString1":"info@example.com","optionalString2":null,"duration":"PT5.000000006S","date":"2016-10-27T13:01:03.923+0000"}

Workaround:
Expected results is returned if specific jboss-deployment-structure.xml file is used:

<?xml version="1.0" encoding="UTF-8"?>
<jboss-deployment-structure>
    <deployment>
        <dependencies>
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jdk8" services="import"/>
            <module name="com.fasterxml.jackson.datatype.jackson-datatype-jsr310" services="import"/>
        </dependencies>
    </deployment>
</jboss-deployment-structure>