package com.atlassian.plugins.rest.common.json;
   
   import org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider;
   import org.codehaus.jackson.jaxrs.JacksonJsonProvider;
   import org.codehaus.jackson.map.AnnotationIntrospector;
   import org.codehaus.jackson.map.DeserializationConfig;
   import org.codehaus.jackson.map.Module;
   import org.codehaus.jackson.map.ObjectMapper;
   import org.codehaus.jackson.map.SerializationConfig;
  import org.codehaus.jackson.map.annotate.JsonSerialize.Inclusion;
  import org.codehaus.jackson.map.introspect.JacksonAnnotationIntrospector;
  import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
  
  import java.util.Collections;
  
  public class JacksonJsonProviderFactory {
      public JacksonJsonProvider create() {
          return create(Collections.<Module>emptyList());
      }
  
      public JacksonJsonProvider create(Iterable<? extends Module> modules) {
          ObjectMapper mapper = new ObjectMapper();
  
          /* This is what MapperConfigurator would do to a default ObjectMapper */
          AnnotationIntrospector intr = AnnotationIntrospector.pair(new JacksonAnnotationIntrospector(), new JaxbAnnotationIntrospector());
          mapper.setDeserializationConfig(mapper.getDeserializationConfig().withAnnotationIntrospector(intr));
          mapper.setSerializationConfig(mapper.getSerializationConfig().withAnnotationIntrospector(intr));
  
          /* In the absence of a specific annotation for @JsonSerialize(include), ignore null fields when serializing */
          mapper.setSerializationInclusion(Inclusion.NON_NULL);
  
          for (Module module : modules) {
              mapper.registerModule(module);
          }
  
          mapper.registerModule(new GuavaIterableCapableModule());
  
          JacksonJaxbJsonProvider provider = new JacksonJaxbJsonProvider(mapper, JacksonJaxbJsonProvider.DEFAULT_ANNOTATIONS);
  
          // Make sure we only rely on annotations for de-/serialization
          provider.configure(SerializationConfig.Feature.AUTO_DETECT_GETTERS, false);
          provider.configure(SerializationConfig.Feature.AUTO_DETECT_FIELDS, false);
          provider.configure(DeserializationConfig.Feature.AUTO_DETECT_SETTERS, false);
          provider.configure(DeserializationConfig.Feature.AUTO_DETECT_FIELDS, false);
          return provider;
      }
  }