ObjectMapperProvider.java

package org.carlspring.strongbox.rest;

import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.AnnotationIntrospector;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.fasterxml.jackson.module.jaxb.JaxbAnnotationIntrospector;

/**
 * @author mtodorov
 */
@Provider
public class ObjectMapperProvider
        implements ContextResolver<ObjectMapper>
{

    final ObjectMapper defaultObjectMapper;


    public ObjectMapperProvider()
    {
        defaultObjectMapper = createDefaultMapper();
    }

    @Override
    public ObjectMapper getContext(final Class<?> type)
    {
        return defaultObjectMapper;
    }

    private static ObjectMapper createDefaultMapper()
    {
        return new ObjectMapper().configure(SerializationFeature.WRAP_ROOT_VALUE, true)
                                 .configure(SerializationFeature.INDENT_OUTPUT, true)
                                 .configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true)
                                 .configure(DeserializationFeature.UNWRAP_ROOT_VALUE, true)
                                 .setAnnotationIntrospector(createJaxbJacksonAnnotationIntrospector())
                                 .setSerializationInclusion(JsonInclude.Include.NON_NULL);
    }

    private static AnnotationIntrospector createJaxbJacksonAnnotationIntrospector()
    {

        final AnnotationIntrospector jaxbIntrospector = new JaxbAnnotationIntrospector(TypeFactory.defaultInstance());
        final AnnotationIntrospector jacksonIntrospector = new JacksonAnnotationIntrospector();

        return AnnotationIntrospector.pair(jacksonIntrospector, jaxbIntrospector);
    }

}