Java Code Examples for com.google.gson.GsonBuilder#registerTypeHierarchyAdapter()

public EventServlet(LeshanServer server, int securePort) {
    this.server = server;
    server.getClientRegistry().addListener(this.clientRegistryListener);
    server.getObservationRegistry().addListener(this.observationRegistryListener);

    // add an interceptor to each endpoint to trace all CoAP messages
    coapMessageTracer = new CoapMessageTracer(server.getClientRegistry());
    for (Endpoint endpoint : server.getCoapServer().getEndpoints()) {
        endpoint.addInterceptor(coapMessageTracer);
    }

    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeHierarchyAdapter(Client.class, new ClientSerializer(securePort));
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mNode.class, new LwM2mNodeSerializer());
    gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
    this.gson = gsonBuilder.create();
}
 

private static Gson gsonBuilder(final GoRequestContext requestContext) {
    GsonBuilder builder = new GsonBuilder();
    builder.registerTypeAdapter(JsonUrl.class, (JsonSerializer<JsonUrl>) (src, typeOfSrc, context) -> {
        if (requestContext == null) {
            return new JsonPrimitive(src.getUrl());
        } else {
            return new JsonPrimitive(requestContext.getFullRequestPath() + src.getUrl());
        }
    });

    builder.registerTypeHierarchyAdapter(MessageSourceResolvable.class, (JsonSerializer<MessageSourceResolvable>) (src, typeOfSrc, context) -> {
        if (requestContext == null) {
            return new JsonPrimitive(src.getDefaultMessage());
        } else {
            return new JsonPrimitive(requestContext.getMessage(src));
        }
    });

    builder.serializeNulls();
    return builder.create();
}
 

public EventServlet(LeshanServer server, int securePort) {
    this.server = server;
    server.getClientRegistry().addListener(this.clientRegistryListener);
    server.getObservationRegistry().addListener(this.observationRegistryListener);

    // add an interceptor to each endpoint to trace all CoAP messages
    coapMessageTracer = new CoapMessageTracer(server.getClientRegistry());
    for (Endpoint endpoint : server.getCoapServer().getEndpoints()) {
        endpoint.addInterceptor(coapMessageTracer);
    }

    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeHierarchyAdapter(Client.class, new ClientSerializer(securePort));
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mNode.class, new LwM2mNodeSerializer());
    gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
    this.gson = gsonBuilder.create();
}
 

@Override
public JsonElement serialize(HibernateProxy proxyObj, Type arg1, JsonSerializationContext arg2) {
    try {
        GsonBuilder gsonBuilder = new GsonBuilder();
        //below ensures deep deproxied serialization
        gsonBuilder.registerTypeHierarchyAdapter(HibernateProxy.class, new HibernateProxySerializer());
        Object deProxied = proxyObj.getHibernateLazyInitializer().getImplementation();
        return gsonBuilder.create().toJsonTree(deProxied);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}
 

public ObjectSpecServlet(LwM2mModelProvider pModelProvider) {
    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeHierarchyAdapter(ObjectModel.class, new ObjectModelSerializer());
    gsonBuilder.registerTypeHierarchyAdapter(ResourceModel.class, new ResourceModelSerializer());
    this.gson = gsonBuilder.create();

    // use the provider from the server and return a model by client
    modelProvider = pModelProvider;
}
 

public ClientServlet(LwM2mServer server, int securePort) {
    this.server = server;

    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeHierarchyAdapter(Client.class, new ClientSerializer(securePort));
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mResponse.class, new ResponseSerializer());
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mNode.class, new LwM2mNodeSerializer());
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mNode.class, new LwM2mNodeDeserializer());
    gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
    this.gson = gsonBuilder.create();
}
 

public JsonSerializer(boolean serializeNulls, ObjectAdapter... adapters) {
    GsonBuilder builder = new GsonBuilder();
    if (serializeNulls) {
        builder.serializeNulls();
    }
    if (adapters.length > 0) {
        for (ObjectAdapter adapter : adapters) {
            builder.registerTypeHierarchyAdapter(adapter.getCls(), new CustomTypeAdapter(adapter));
        }
    }
    gson = builder.create();
}
 

/**
 * Initializes the current Gson object if null and returns it. The Gson
 * object has custom adapters to manage datatypes according to Facebook
 * formats.
 * 
 * @return the current instance of Gson.
 */
private static Gson getGson() {
	if (gson == null) {
		// Creates the Gson object which will manage the information
		// received
		GsonBuilder builder = new GsonBuilder();

		// Serializes enums as lower-case.
		builder.registerTypeHierarchyAdapter(Enum.class,
				new EnumLowercaseSerializer());

		// Serializes calendar in format YYYY-MM-DDThh:mm.
		builder.registerTypeHierarchyAdapter(Calendar.class,
				new CalendarSerializer());

		// Deserializes payloads from interface.
		builder.registerTypeAdapter(Attachment.class,
				new AttachmentDeserializer());

		// Serializes/deserializes buttons from interface.
		builder.registerTypeAdapter(Button.class, new ButtonSerializer());

		// Deserializes incoming messages from interface.
		builder.registerTypeAdapter(IncomingMessage.class,
				new IncomingMessageDeserializer());

		// Deserializes timestamp as Calendar.
		builder.registerTypeAdapter(Calendar.class,
				new CalendarFromTimestampJsonDeserializer());

		gson = builder.create();
	}
	return gson;
}
 

public ApiServlet(LwM2mServer server, int securePort) {
    this.server = server;

    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeHierarchyAdapter(Client.class, new ClientSerializer(securePort));
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mResponse.class, new ResponseSerializer());
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mNode.class, new LwM2mNodeSerializer());
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mNode.class, new LwM2mNodeDeserializer());
    gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
    this.gson = gsonBuilder.create();
}
 

public ClientServlet(LwM2mServer server, int securePort) {
    this.server = server;

    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeHierarchyAdapter(Client.class, new ClientSerializer(securePort));
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mResponse.class, new ResponseSerializer());
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mNode.class, new LwM2mNodeSerializer());
    gsonBuilder.registerTypeHierarchyAdapter(LwM2mNode.class, new LwM2mNodeDeserializer());
    gsonBuilder.setDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
    this.gson = gsonBuilder.create();
}
 

public ObjectSpecServlet(LwM2mModelProvider pModelProvider) {
    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeHierarchyAdapter(ObjectModel.class, new ObjectModelSerializer());
    gsonBuilder.registerTypeHierarchyAdapter(ResourceModel.class, new ResourceModelSerializer());
    this.gson = gsonBuilder.create();

    // use the provider from the server and return a model by client
    modelProvider = pModelProvider;
}
 

/**
 * Method initGsonBuilder.
 * @param builder Builder

 * @return GsonBuilder */
private static GsonBuilder initGsonBuilder(
  Builder builder, 
  Schema schema, 
  ASObjectAdapter base,
  Iterable<AdapterEntry<?>> adapters) {
  
  GsonBuilder gson = new GsonBuilder()
  .registerTypeHierarchyAdapter(TypeValue.class, new TypeValueAdapter(schema))
  .registerTypeHierarchyAdapter(LinkValue.class, new LinkValueAdapter(schema))
  .registerTypeHierarchyAdapter(Iterable.class, ITERABLE)
  .registerTypeHierarchyAdapter(ASObject.class, base)
  .registerTypeHierarchyAdapter(Collection.class, base)
  .registerTypeHierarchyAdapter(Activity.class, base)
  .registerTypeHierarchyAdapter(NLV.class, NLV)
  .registerTypeHierarchyAdapter(ActionsValue.class, ACTIONS)
  .registerTypeHierarchyAdapter(Optional.class, OPTIONAL)
  .registerTypeHierarchyAdapter(Range.class, RANGE)
  .registerTypeHierarchyAdapter(Table.class, TABLE)
  .registerTypeHierarchyAdapter(LazilyParsedNumber.class, NUMBER)
  .registerTypeHierarchyAdapter(LazilyParsedNumberComparable.class, NUMBER)
  .registerTypeHierarchyAdapter(ReadableDuration.class, DURATION)
  .registerTypeHierarchyAdapter(ReadablePeriod.class, PERIOD)
  .registerTypeHierarchyAdapter(ReadableInterval.class, INTERVAL)
  .registerTypeAdapter(
    Activity.Status.class, 
    forEnum(
      Activity.Status.class, 
      Activity.Status.OTHER))
  .registerTypeAdapter(Date.class, DATE)
  .registerTypeAdapter(DateTime.class, DATETIME)
  .registerTypeAdapter(MediaType.class, MIMETYPE)
  .registerTypeHierarchyAdapter(Multimap.class, MULTIMAP);
  
  for (AdapterEntry<?> entry : adapters) {
    if (entry.hier)
      gson.registerTypeHierarchyAdapter(
        entry.type, 
        entry.adapter!=null ?
          entry.adapter : base);
    else
      gson.registerTypeAdapter(
        entry.type, 
        entry.adapter!=null ? 
          entry.adapter:base);
  }
  
  return gson;

}
 

public String serializeSurveyDefinition(SurveyDefinition surveyDefinition){
	try{
		GsonBuilder gsonBuilder = new GsonBuilder();
		//set up the fields to skip in the serialization
		gsonBuilder = gsonBuilder.setExclusionStrategies(new ExclusionStrategy() {
	        						public boolean shouldSkipClass(Class<?> clazz) {
	        							return false;
	        						}
	        						@Override
	        						public boolean shouldSkipField(FieldAttributes f) {
	        						boolean skip = (f.getDeclaringClass() == SurveyDefinition.class && f.getName().equals("id"))||
	        									   (f.getDeclaringClass() == SurveyDefinition.class && f.getName().equals("version"))||
	        									   (f.getDeclaringClass() == SurveyDefinition.class && f.getName().equals("department"))||
	        									   (f.getDeclaringClass() == SurveyDefinition.class && f.getName().equals("users"))||
	        									   (f.getDeclaringClass() == SurveyDefinitionPage.class && f.getName().equals("id"))||
	        									   (f.getDeclaringClass() == SurveyDefinitionPage.class && f.getName().equals("surveyDefinition"))||
	        									   (f.getDeclaringClass() == Question.class && f.getName().equals("id"))||
	        									   (f.getDeclaringClass() == Question.class && f.getName().equals("version"))||
	        									   (f.getDeclaringClass() == Question.class && f.getName().equals("page"))||
	        									   (f.getDeclaringClass() == Question.class && f.getName().equals("optionsList"))||
	        									   (f.getDeclaringClass() == Question.class && f.getName().equals("rowLabelsList"))||
	        									   (f.getDeclaringClass() == Question.class && f.getName().equals("columnLabelsList"))||
	        									   (f.getDeclaringClass() == QuestionOption.class && f.getName().equals("id"))||
	        									   (f.getDeclaringClass() == QuestionOption.class && f.getName().equals("version"))||
	        						               (f.getDeclaringClass() == QuestionOption.class && f.getName().equals("question")) ||
	        						               (f.getDeclaringClass() == QuestionRowLabel.class && f.getName().equals("id"))||
	        									   (f.getDeclaringClass() == QuestionRowLabel.class && f.getName().equals("version"))||
	        						               (f.getDeclaringClass() == QuestionRowLabel.class && f.getName().equals("question")) ||
	        						               (f.getDeclaringClass() == QuestionColumnLabel.class && f.getName().equals("id"))||
	        									   (f.getDeclaringClass() == QuestionColumnLabel.class && f.getName().equals("version"))||
	        									   (f.getDeclaringClass() == QuestionColumnLabel.class && f.getName().equals("question"));
	        						return skip;
	        						}

	     });
		
		//de-proxy the object
		gsonBuilder.registerTypeHierarchyAdapter(HibernateProxy.class, new HibernateProxySerializer());
		Hibernate.initialize(surveyDefinition);
		if (surveyDefinition instanceof HibernateProxy)  {
		  surveyDefinition = (SurveyDefinition) ((HibernateProxy)surveyDefinition).getHibernateLazyInitializer().getImplementation();
		}
		Gson gson =  gsonBuilder.serializeNulls().create();
		return gson.toJson(surveyDefinition);
	
	} 
	catch (Exception e) {
		log.error(e.getMessage(),e);
		throw (new RuntimeException(e));
	}
	
}
 

public WebApplicationExceptionMapper() {
  GsonBuilder gsonBuilder = new GsonBuilder().enableComplexMapKeySerialization();
  gsonBuilder.registerTypeHierarchyAdapter(
      Exception.class, new ExceptionSerializer());
  this.gson = gsonBuilder.create();
}
 

protected static void setDefaultProperties(GsonBuilder builder) {
    builder.registerTypeHierarchyAdapter(Date.class, new DateJsonSerializer());
}
 

public static GsonBuilder initBuilder(GsonBuilder gb){
	gb.registerTypeHierarchyAdapter(PublicKey.class,new PublicKeyTypeAdapter());
	gb.registerTypeHierarchyAdapter(Permission.class, new PermissionTypeAdapter());
	return gb;
}
 

/**
 * Obtain a {@link GsonBuilder} which Base64-encodes {@code byte[]}
 * properties when reading and writing JSON.
 * <p>A custom {@link com.google.gson.TypeAdapter} will be registered via
 * {@link GsonBuilder#registerTypeHierarchyAdapter(Class, Object)} which
 * serializes a {@code byte[]} property to and from a Base64-encoded String
 * instead of a JSON array.
 * <p><strong>NOTE:</strong> Use of this option requires the presence of the
 * Apache Commons Codec library on the classpath when running on Java 6 or 7.
 * On Java 8, the standard {@link java.util.Base64} facility is used instead.
 */
public static GsonBuilder gsonBuilderWithBase64EncodedByteArrays() {
	GsonBuilder builder = new GsonBuilder();
	builder.registerTypeHierarchyAdapter(byte[].class, new Base64TypeAdapter());
	return builder;
}
 

/**
 * Obtain a {@link GsonBuilder} which Base64-encodes {@code byte[]}
 * properties when reading and writing JSON.
 * <p>A custom {@link com.google.gson.TypeAdapter} will be registered via
 * {@link GsonBuilder#registerTypeHierarchyAdapter(Class, Object)} which
 * serializes a {@code byte[]} property to and from a Base64-encoded String
 * instead of a JSON array.
 * <p><strong>NOTE:</strong> Use of this option requires the presence of the
 * Apache Commons Codec library on the classpath when running on Java 6 or 7.
 * On Java 8, the standard {@link java.util.Base64} facility is used instead.
 */
public static GsonBuilder gsonBuilderWithBase64EncodedByteArrays() {
	GsonBuilder builder = new GsonBuilder();
	builder.registerTypeHierarchyAdapter(byte[].class, new Base64TypeAdapter());
	return builder;
}
 

/**
 * Obtain a {@link GsonBuilder} which Base64-encodes {@code byte[]}
 * properties when reading and writing JSON.
 * <p>A custom {@link com.google.gson.TypeAdapter} will be registered via
 * {@link GsonBuilder#registerTypeHierarchyAdapter(Class, Object)} which
 * serializes a {@code byte[]} property to and from a Base64-encoded String
 * instead of a JSON array.
 */
public static GsonBuilder gsonBuilderWithBase64EncodedByteArrays() {
	GsonBuilder builder = new GsonBuilder();
	builder.registerTypeHierarchyAdapter(byte[].class, new Base64TypeAdapter());
	return builder;
}
 

/**
 * Obtain a {@link GsonBuilder} which Base64-encodes {@code byte[]}
 * properties when reading and writing JSON.
 * <p>A custom {@link com.google.gson.TypeAdapter} will be registered via
 * {@link GsonBuilder#registerTypeHierarchyAdapter(Class, Object)} which
 * serializes a {@code byte[]} property to and from a Base64-encoded String
 * instead of a JSON array.
 */
public static GsonBuilder gsonBuilderWithBase64EncodedByteArrays() {
	GsonBuilder builder = new GsonBuilder();
	builder.registerTypeHierarchyAdapter(byte[].class, new Base64TypeAdapter());
	return builder;
}