public static ObjectMapper createWithCaseInsensitiveEnumDeserializer()
{
    SimpleModule module = new SimpleModule();
    module.setDeserializerModifier(new BeanDeserializerModifier()
    {
        @Override
        public JsonDeserializer<Enum<?>> modifyEnumDeserializer(DeserializationConfig config, final JavaType type,
                BeanDescription beanDescription, final JsonDeserializer<?> deserializer)
        {
            return new JsonDeserializer<>()
            {
                @SuppressWarnings({ "unchecked", "rawtypes" })
                @Override
                public Enum<?> deserialize(JsonParser parser, DeserializationContext context) throws IOException
                {
                    return Enum.valueOf((Class<? extends Enum>) type.getRawClass(),
                            parser.getValueAsString().toUpperCase());
                }
            };
        }
    });
    ObjectMapper objectMapper = new ObjectMapper();
    objectMapper.registerModule(module);
    return objectMapper;
}
 

/**
 * Determine whether a given field should be ignored, according to various jackson annotations for that purpose,
 * <br>
 * e.g. {@code JsonBackReference}, {@code JsonIgnore}, {@code JsonIgnoreType}, {@code JsonIgnoreProperties}
 *
 * @param field field to check
 * @return whether field should be excluded
 */
protected boolean shouldIgnoreField(FieldScope field) {
    if (field.getAnnotationConsideringFieldAndGetter(JsonBackReference.class) != null) {
        return true;
    }
    // instead of re-creating the various ways a property may be included/excluded in jackson: just use its built-in introspection
    BeanDescription beanDescription = this.getBeanDescriptionForClass(field.getDeclaringType());
    // some kinds of field ignorals are only available via an annotation introspector
    Set<String> ignoredProperties = this.objectMapper.getSerializationConfig().getAnnotationIntrospector()
            .findPropertyIgnorals(beanDescription.getClassInfo()).getIgnored();
    String fieldName = field.getName();
    if (ignoredProperties.contains(fieldName)) {
        return true;
    }
    // other kinds of field ignorals are handled implicitly, i.e. are only available by way of being absent
    return beanDescription.findProperties().stream()
            .noneMatch(propertyDefinition -> fieldName.equals(propertyDefinition.getInternalName()));
}
 

@Override
public List<BeanPropertyDefinition> updateProperties(
	DeserializationConfig config, BeanDescription beanDesc,
	List<BeanPropertyDefinition> propDefs) {
	if (!type.equals(beanDesc.getBeanClass())) {
		return propDefs;
	}

	List<BeanPropertyDefinition> newPropDefs = new ArrayList<>();
	for (BeanPropertyDefinition propDef : propDefs) {
		if (!ignorables.contains(propDef.getName())) {
			newPropDefs.add(propDef);
		}
	}
	return newPropDefs;
}
 

private static ObjectMapper configureObjectMapper(
        ObjectMapper objectMapper, boolean shouldIncludeRawResponses) {
    if (shouldIncludeRawResponses) {
        SimpleModule module = new SimpleModule();
        module.setDeserializerModifier(new BeanDeserializerModifier() {
            @Override
            public JsonDeserializer<?> modifyDeserializer(DeserializationConfig config,
                                                          BeanDescription beanDesc,
                                                          JsonDeserializer<?> deserializer) {
                if (Response.class.isAssignableFrom(beanDesc.getBeanClass())) {
                    return new RawResponseDeserializer(deserializer);
                }

                return deserializer;
            }
        });

        objectMapper.registerModule(module);
    }

    objectMapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

    return objectMapper;
}
 

private static ObjectMapper configureObjectMapper(
        ObjectMapper objectMapper, boolean shouldIncludeRawResponses) {
    if (shouldIncludeRawResponses) {
        SimpleModule module = new SimpleModule();
        module.setDeserializerModifier(new BeanDeserializerModifier() {
            @Override
            public JsonDeserializer<?> modifyDeserializer(DeserializationConfig config,
                                                          BeanDescription beanDesc,
                                                          JsonDeserializer<?> deserializer) {
                if (Response.class.isAssignableFrom(beanDesc.getBeanClass())) {
                    return new RawResponseDeserializer(deserializer);
                }

                return deserializer;
            }
        });

        objectMapper.registerModule(module);
    }

    objectMapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

    return objectMapper;
}
 

@Override
public List<BeanPropertyWriter> changeProperties(SerializationConfig config, BeanDescription beanDesc, List<BeanPropertyWriter> beanProperties) {
  for (BeanPropertyWriter beanProperty : beanProperties) {
    StoredAsJson storedAsJson = beanProperty.getAnnotation(StoredAsJson.class);
    if (storedAsJson != null && !StoredAsJson.NULL.equals(storedAsJson.empty())) {
      final JsonSerializer<Object> nullSerializer;
      if (storedAsJson.binary()) {
        nullSerializer = new ConstantBinarySerializer(storedAsJson.empty());
      } else {
        nullSerializer = new ConstantSerializer(storedAsJson.empty());
      }

      beanProperty.assignNullSerializer(nullSerializer);
    }
  }

  return super.changeProperties(config, beanDesc, beanProperties);
}
 

public JacksonClientModule() {
	setSerializerModifier(new BeanSerializerModifier() {

		@Override
		public List<BeanPropertyWriter> changeProperties(SerializationConfig config, BeanDescription beanDesc,
				List<BeanPropertyWriter> beanProperties) {
			
			for (BeanPropertyWriter writer : beanProperties) {
				if (writer.getAnnotation(LinkedResource.class) != null) {
					writer.assignSerializer(new LinkedResourceUriSerializer());
				}
			}
			
			return beanProperties;
		}
	});
	
	setMixInAnnotation(EntityModel.class, ResourceMixin.class);
	setMixInAnnotation(MethodHandler.class, MethodHandlerMixin.class);
}
 

/**
 * Gets a module wrapping this serializer as an adapter for the Jackson
 * ObjectMapper.
 *
 * @param mapper the object mapper for default deserializations
 * @return a simple module to be plugged onto Jackson ObjectMapper.
 */
public static SimpleModule getModule(final ObjectMapper mapper) {
    SimpleModule module = new SimpleModule();
    module.setDeserializerModifier(new BeanDeserializerModifier() {
        @Override
        public JsonDeserializer<?> modifyDeserializer(DeserializationConfig config, BeanDescription beanDesc, JsonDeserializer<?> deserializer) {
            for (Class<?> c : TypeToken.of(beanDesc.getBeanClass()).getTypes().classes().rawTypes()) {
                Field[] fields = c.getDeclaredFields();
                for (Field field : fields) {
                    if ("additionalProperties".equalsIgnoreCase(field.getName())) {
                        JsonProperty property = field.getAnnotation(JsonProperty.class);
                        if (property != null && property.value().isEmpty()) {
                            return new AdditionalPropertiesDeserializer(beanDesc.getBeanClass(), deserializer, mapper);
                        }
                    }
                }
            }
            return deserializer;
        }
    });
    return module;
}
 

@Override
public void setupModule(Module.SetupContext context) {
	super.setupModule(context);

	context.addBeanSerializerModifier(new BeanSerializerModifier() {

		@Override
		public JsonSerializer<?> modifySerializer(
			SerializationConfig config,
			BeanDescription beanDesc,
			JsonSerializer<?> serializer) {
			if (serializer instanceof BeanSerializerBase) {
				return new ExtraFieldSerializer(
					(BeanSerializerBase) serializer);
			}
			return serializer;

		}
	});
}
 

@Override
public void setupModule(SetupContext setupContext) {
    super.setupModule(setupContext);
    setupContext.addBeanSerializerModifier(new BeanSerializerModifier() {
        @SuppressWarnings("unchecked")
        @Override
        public JsonSerializer<?> modifySerializer(
            SerializationConfig serializationConfig,
            BeanDescription beanDescription,
            JsonSerializer<?> jsonSerializer) {
            Class<?> beanClass = beanDescription.getBeanClass();
            if (Cause.class.isAssignableFrom(beanClass)) {
                return new CauseSerializer((JsonSerializer<Object>) jsonSerializer);
            } else if (StackTraceElement.class.isAssignableFrom(beanClass)) {
                return new StackTraceElementSerializer();
            }
            return jsonSerializer;
        }
    });
}
 

public static BeanSerializerModifier createJsonSerializerModifier() { // final
	// KeyFormatter
	// keyFormatter,
	// final
	// boolean
	// compactMode)
	// {
	return new BeanSerializerModifier() {
		@Override
		public JsonSerializer<?> modifySerializer(SerializationConfig config,
				BeanDescription beanDesc, JsonSerializer<?> serializer) {
			/*
			 * if (beanDesc.getBeanClass().isAssignableFrom(Applications.class)) {
			 * return new ApplicationsJsonBeanSerializer((BeanSerializerBase)
			 * serializer, keyFormatter); }
			 */
			if (beanDesc.getBeanClass().isAssignableFrom(InstanceInfo.class)) {
				return new InstanceInfoJsonBeanSerializer(
						(BeanSerializerBase) serializer, false);
			}
			return serializer;
		}
	};
}
 

/**
 * Gets a module wrapping this serializer as an adapter for the Jackson
 * ObjectMapper.
 *
 * @param mapper the object mapper for default serializations
 * @return a simple module to be plugged onto Jackson ObjectMapper.
 */
public static SimpleModule getModule(final ObjectMapper mapper) {
    SimpleModule module = new SimpleModule();
    module.setSerializerModifier(new BeanSerializerModifier() {
        @Override
        public JsonSerializer<?> modifySerializer(SerializationConfig config, BeanDescription beanDesc, JsonSerializer<?> serializer) {
            for (Class<?> c : TypeToken.of(beanDesc.getBeanClass()).getTypes().classes().rawTypes()) {
                if (c.isAssignableFrom(Object.class)) {
                    continue;
                }
                Field[] fields = c.getDeclaredFields();
                for (Field field : fields) {
                    if ("additionalProperties".equalsIgnoreCase(field.getName())) {
                        JsonProperty property = field.getAnnotation(JsonProperty.class);
                        if (property != null && property.value().isEmpty()) {
                            return new AdditionalPropertiesSerializer(beanDesc.getBeanClass(), serializer, mapper);
                        }
                    }
                }
            }
            return serializer;
        }
    });
    return module;
}
 

@Override
public BeanDeserializerBuilder updateBuilder(
	DeserializationConfig config, BeanDescription beanDesc,
	BeanDeserializerBuilder builder) {
	if (!type.equals(beanDesc.getBeanClass())) {
		return builder;
	}

	for (String ignorable : ignorables) {
		builder.addIgnorable(ignorable);
	}
	return builder;
}
 

@Override
public List<BeanPropertyDefinition> updateProperties(DeserializationConfig config,
        BeanDescription beanDesc, List<BeanPropertyDefinition> propDefs) {
    if (!thinnables.contains(beanDesc.getBeanClass())) {
        return propDefs;
    }
    List<BeanPropertyDefinition> newPropDefs = new ArrayList<>();
    for (BeanPropertyDefinition propDef : propDefs) {
        if (!ignorables.contains(propDef.getName())) {
            newPropDefs.add(propDef);
        }
    }
    return newPropDefs;
}
 

@Override
public BeanDeserializerBuilder updateBuilder(
	DeserializationConfig config, BeanDescription beanDesc,
	BeanDeserializerBuilder builder) {
	if (!type.equals(beanDesc.getBeanClass())) {
		return builder;
	}

	for (String ignorable : ignorables) {
		builder.addIgnorable(ignorable);
	}
	return builder;
}
 

public RestEngineTimeModule(String[] patterns) {
    this();
    setDeserializerModifier(new BeanDeserializerModifier() {
        @Override
        public JsonDeserializer<?> modifyDeserializer(DeserializationConfig config, BeanDescription beanDesc, JsonDeserializer<?> deserializer) {
            if (beanDesc.getBeanClass() == String.class) {
                CustomDateDeserializer dateDeserializer = new CustomDateDeserializer(deserializer);
                dateDeserializer.setPatterns(patterns);
                return dateDeserializer;
            }
            return deserializer;
        }
    });
}
 

public RestEngineTimeModule(String[] patterns, String[] exclusionKeys) {
    this();
    setDeserializerModifier(new BeanDeserializerModifier() {
        @Override
        public JsonDeserializer<?> modifyDeserializer(DeserializationConfig config, BeanDescription beanDesc, JsonDeserializer<?> deserializer) {
            if (beanDesc.getBeanClass() == String.class) {
                CustomDateDeserializer dateDeserializer = new CustomDateDeserializer(deserializer);
                dateDeserializer.setPatterns(patterns);
                dateDeserializer.setExclusions(exclusionKeys);
                return dateDeserializer;
            }
            return deserializer;
        }
    });
}
 

@Override
public BeanDeserializerBuilder updateBuilder(DeserializationConfig config, BeanDescription beanDesc,
        BeanDeserializerBuilder builder) {
    if (!thinnables.contains(beanDesc.getBeanClass())) {
        return builder;
    }
    for (String ignore : ignorables) {
        builder.addIgnorable(ignore);
    }
    return builder;
}
 

@Override
public @Nullable JsonSerializer<?> findSerializer(
    SerializationConfig config, JavaType type, BeanDescription beanDesc) {
  if (RangeSet.class.isAssignableFrom(type.getRawClass())) {
    return new RangeSetSerializer(type.findSuperType(RangeSet.class));
  }
  return null;
}
 

@Override
public JsonDeserializer<?> findBeanDeserializer(JavaType type,
        DeserializationConfig config, BeanDescription beanDesc)
    throws JsonMappingException
{
    return HppcContainerDeserializers.findDeserializer(config, type);
}
 

@Override
public JsonSerializer<?> findReferenceSerializer(SerializationConfig config,
                                                 ReferenceType type, BeanDescription beanDesc,
                                                 TypeSerializer contentTypeSerializer, JsonSerializer<Object> contentValueSerializer) {
    Class<?> raw = type.getRawClass();
    if (Lazy.class.isAssignableFrom(raw)) {
        return new LazySerializer(type, type.getContentType(), contentTypeSerializer, contentValueSerializer);
    }
    if (Option.class.isAssignableFrom(raw)) {
        return new OptionSerializer(type, type.getContentType(), contentTypeSerializer, contentValueSerializer, settings.useOptionInPlainFormat());
    }
    return super.findReferenceSerializer(config, type, beanDesc, contentTypeSerializer, contentValueSerializer);
}
 

/**
 * Gets a module wrapping this serializer as an adapter for the Jackson
 * ObjectMapper.
 *
 * @param mapper the object mapper for default serializations
 * @return a simple module to be plugged onto Jackson ObjectMapper.
 */
public static SimpleModule getModule(final ObjectMapper mapper) {
    SimpleModule module = new SimpleModule();
    module.setSerializerModifier(new BeanSerializerModifier() {
        @Override
        public JsonSerializer<?> modifySerializer(SerializationConfig config, BeanDescription beanDesc, JsonSerializer<?> serializer) {
            if (BeanSerializer.class.isAssignableFrom(serializer.getClass())) {
                return new FlatteningSerializer(beanDesc.getBeanClass(), serializer, mapper);
            }
            return serializer;
        }
    });
    return module;
}
 

@Override
public JsonSerializer<?> modifySerializer(SerializationConfig config, BeanDescription beanDesc, JsonSerializer<?> serializer) {
  if (serializer instanceof UnknownSerializer || serializer instanceof BeanSerializer) {
    return customEncodersSerializer;
  } else {
    return serializer;
  }
}
 

@Override
public JsonSerializer<?> findReferenceSerializer(SerializationConfig config, ReferenceType type, BeanDescription beanDesc, TypeSerializer contentTypeSerializer, JsonSerializer<Object> contentValueSerializer) {
  if (Option.class.isAssignableFrom(type.getRawClass())) {
    return new OptionSerializer(type,true,contentTypeSerializer,contentValueSerializer);
  }
  if (Eval.class.isAssignableFrom(type.getRawClass())) {
    return new EvalSerializer(type,true,contentTypeSerializer,contentValueSerializer);
  }
  if (Trampoline.class.isAssignableFrom(type.getRawClass())) {
    return new TrampolineSerializer(type,true,contentTypeSerializer,contentValueSerializer);
  }
  if (Ior.class.isAssignableFrom(type.getRawClass())) {
    return new IorSerializer();
  }
  if (Sealed2.class.isAssignableFrom(type.getRawClass())) {
    return new Sealed2Serializer();
  }
  if (Sealed3.class.isAssignableFrom(type.getRawClass())) {
    return new Sealed3Serializer();
  }
  if (Sealed4.class.isAssignableFrom(type.getRawClass())) {
    return new Sealed4Serializer();
  }
  if (Sealed5.class.isAssignableFrom(type.getRawClass())) {
    return new Sealed5Serializer();
  }
  if (Value.class.isAssignableFrom(type.getRawClass())) {
    return new ValueSerializer(type,true,contentTypeSerializer,contentValueSerializer);
  }

  return super.findReferenceSerializer(config, type, beanDesc, contentTypeSerializer, contentValueSerializer);
}
 

/**
 * Gets a module wrapping this serializer as an adapter for the Jackson
 * ObjectMapper.
 *
 * @param mapper the object mapper for default serializations
 * @return a simple module to be plugged onto Jackson ObjectMapper.
 */
public static SimpleModule getModule(final ObjectMapper mapper) {
    SimpleModule module = new SimpleModule();
    module.setSerializerModifier(new BeanSerializerModifier() {
        @Override
        public JsonSerializer<?> modifySerializer(SerializationConfig config, BeanDescription beanDesc, JsonSerializer<?> serializer) {
            if (BeanSerializer.class.isAssignableFrom(serializer.getClass())) {
                return new FlatteningSerializer(beanDesc.getBeanClass(), serializer, mapper);
            }
            return serializer;
        }
    });
    return module;
}
 

@Override
public JsonSerializer<?> modifyMapSerializer(SerializationConfig config, MapType valueType,
    BeanDescription beanDesc, JsonSerializer<?> serializer) {
  if (serializer instanceof MapSerializer) {
    // TODO: We should probably be propagating the NON_EMPTY inclusion here, but it's breaking
    // discovery.
    return new DeepEmptyCheckingSerializer<>(serializer);
  }
  return serializer;
}
 

public ObjectMapperResolver() {
    mapper = new GraviteeMapper();

    //because Permissions are represented as char[]
    mapper.enable(SerializationFeature.WRITE_CHAR_ARRAYS_AS_JSON_ARRAYS);

    // register filter provider
    registerFilterProvider();

    SimpleModule module = new SimpleModule();
    module.setDeserializerModifier(new BeanDeserializerModifier() {
        @Override
        public JsonDeserializer<Enum> modifyEnumDeserializer(DeserializationConfig config,
                                                             final JavaType type,
                                                             BeanDescription beanDesc,
                                                             final JsonDeserializer<?> deserializer) {
            return new JsonDeserializer<Enum>() {
                @Override
                public Enum deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
                    Class<? extends Enum> rawClass = (Class<Enum<?>>) type.getRawClass();
                    return Enum.valueOf(rawClass, jp.getValueAsString().toUpperCase());
                }
            };
        }
    });
    module.addSerializer(Enum.class, new StdSerializer<Enum>(Enum.class) {
        @Override
        public void serialize(Enum value, JsonGenerator jgen, SerializerProvider provider) throws IOException {
            jgen.writeString(value.name().toLowerCase());
        }
    });
    mapper.registerModule(module);
    
    mapper.registerModule(new JavaTimeModule());
    mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
}
 

@Override
@SuppressWarnings("unchecked")
public JsonDeserializer<?> findBeanDeserializer(JavaType type, DeserializationConfig config, BeanDescription beanDesc)
        throws JsonMappingException {
  if (Message.class.isAssignableFrom(type.getRawClass())) {
    return getDeserializer((Class<? extends Message>) type.getRawClass()).buildAtEnd();
  } else if (Message.Builder.class.isAssignableFrom(type.getRawClass())) {
    return getDeserializer((Class<? extends Message>) type.getRawClass().getDeclaringClass());
  } else {
    return super.findBeanDeserializer(type, config, beanDesc);
  }
}
 

@Override
public JsonDeserializer<?> findReferenceDeserializer(ReferenceType refType, DeserializationConfig config,
                                                     BeanDescription beanDesc, TypeDeserializer contentTypeDeserializer,
                                                     JsonDeserializer<?> contentDeserializer) throws JsonMappingException {
    for (Deserializers deserializers : deserializersList) {
        JsonDeserializer<?> deserializer = deserializers.findReferenceDeserializer(refType, config, beanDesc, contentTypeDeserializer, contentDeserializer);
        if (deserializer != null) {
            return deserializer;
        }
    }
    return null;
}
 

@Override
public JsonSerializer<?> findCollectionLikeSerializer(SerializationConfig config, CollectionLikeType type, BeanDescription beanDesc, TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer) {
    if (!Collection.class.isAssignableFrom(type.getRawClass()) && IterableX.class.isAssignableFrom(type.getRawClass())) {
        return new IterableXSerializer();
    }
  return super.findCollectionLikeSerializer(config, type, beanDesc, elementTypeSerializer, elementValueSerializer);
}