package eu.scape_project.watch.rest.resource;
   
   import javax.ws.rs.Produces;
   import javax.ws.rs.core.MediaType;
   import javax.ws.rs.ext.Provider;
   
   import org.codehaus.jackson.map.AnnotationIntrospector;
   import org.codehaus.jackson.map.DeserializationConfig.Feature;
   import org.codehaus.jackson.map.ObjectMapper;
  import org.codehaus.jackson.map.SerializationConfig;
  import org.codehaus.jackson.map.introspect.JacksonAnnotationIntrospector;
  import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
  
  /**
   * Provider that configures Jackson to better detect methods and properties to
   * serialize JSON.
   * 
   * 
   * @author Wordnik
   */
  @Provider
  @Produces(MediaType.APPLICATION_JSON)
  public class JSONContextResolver extends org.codehaus.jackson.jaxrs.JacksonJsonProvider {
    
    /**
     * Instance holder.
     */
    @SuppressWarnings("deprecation")
    private static final class ObjectMapperHolder {
      /**
       * Cannot be instantiated.
       */
      private ObjectMapperHolder() {
      }
  
      /**
       * The instance.
       */
      public static final ObjectMapper COMMON_MAPPER = new ObjectMapper();
      
      static {
        AnnotationIntrospector jackson = new JacksonAnnotationIntrospector();
        AnnotationIntrospector jaxb = new JaxbAnnotationIntrospector();
        AnnotationIntrospector pair = new AnnotationIntrospector.Pair(jaxb, jackson);
        COMMON_MAPPER.getSerializationConfig().setAnnotationIntrospector(jaxb);
        COMMON_MAPPER.getDeserializationConfig().setAnnotationIntrospector(pair);
        COMMON_MAPPER.getDeserializationConfig().set(Feature.AUTO_DETECT_SETTERS, true);
        COMMON_MAPPER.configure(Feature.AUTO_DETECT_SETTERS, true);
        COMMON_MAPPER.configure(SerializationConfig.Feature.WRITE_NULL_PROPERTIES, false);
        COMMON_MAPPER.configure(Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        COMMON_MAPPER.configure(SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS, false);
      }
    }
  
    /**
     * Get singleton instance.
     * 
     * @return The singleton instance
     */
    public static ObjectMapper getCommonMapper() {
      return ObjectMapperHolder.COMMON_MAPPER;
    }
  
    public JSONContextResolver() {
      super.setMapper(getCommonMapper());
    }
  }