com.fasterxml.jackson.databind.deser.std.StdDeserializer Java Examples

@Override
@SuppressWarnings("unchecked")
public JsonDeserializer createDeserializer() {
  return new StdDeserializer<Enum>(Enum.class) {
    @Override
    public Enum deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
      CustomProtobufParser pp = (CustomProtobufParser) p;

      Class<Enum> enumType = ProtobufParserUtil.getEnumClassOfCurrentField(pp.getCurrentMessage(), pp.getCurrentField());

      switch (protobufConfig.getEnumMode()) {
        case ByOrdinal:
          // minus 1 to match .net
          int ordinal = p.getIntValue() - 1;
          return enumType.getEnumConstants()[ordinal];
        case ByValue:
          return createEnumFromValue(enumType, p.getIntValue());
      }

      throw new RuntimeException("unknown enum mode " + protobufConfig.getEnumMode());
    }
  };
}
 

TestModule()
{
  addSerializer(Interval.class, ToStringSerializer.instance);
  addDeserializer(
      Interval.class, new StdDeserializer<Interval>(Interval.class)
      {
        @Override
        public Interval deserialize(
            JsonParser jsonParser, DeserializationContext deserializationContext
        ) throws IOException, JsonProcessingException
        {
          return new Interval(jsonParser.getText());
        }
      }
  );
}
 

private TypeSpec.Builder createSerialisationForDateTime(ObjectPluginContext objectPluginContext) {

    ClassName returnType = ClassName.get(Date.class);
    TypeSpec.Builder builder = TypeSpec.classBuilder("TimestampDeserializer")
            .addModifiers(Modifier.PUBLIC)
            .superclass(ParameterizedTypeName.get(ClassName.get(StdDeserializer.class), returnType))
            .addField(FieldSpec.builder(StdDateFormat.class, "DATE_PARSER", Modifier.PRIVATE, Modifier.STATIC, Modifier.FINAL).initializer("new $T()", StdDateFormat.class).build())
            .addMethod(
                    MethodSpec.constructorBuilder()
                            .addModifiers(Modifier.PUBLIC)
                            .addCode("super($T.class);", returnType).build()

            ).addModifiers(Modifier.PUBLIC);


    MethodSpec.Builder deserialize = MethodSpec.methodBuilder("deserialize")
            .addModifiers(Modifier.PUBLIC)
            .addParameter(ParameterSpec.builder(ClassName.get(JsonParser.class), "jsonParser").build())
            .addParameter(ParameterSpec.builder(ClassName.get(DeserializationContext.class), "jsonContext").build())
            .addException(IOException.class)
            .addException(JsonProcessingException.class)
            .returns(returnType)
            .addCode(
                    CodeBlock.builder().beginControlFlow("try").add(
                    CodeBlock.builder()
                      .addStatement("$T mapper  = new $T()", ObjectMapper.class, ObjectMapper.class)
                      .addStatement("$T dateString = mapper.readValue(jsonParser, String.class)", String.class)
                      .addStatement("Date date = DATE_PARSER.parse(dateString)", SimpleDateFormat.class)
                      .addStatement("return date").build()
                    ).add("} catch ($T e) {", ParseException.class).addStatement("throw new $T(e)", IOException.class).endControlFlow().build()
            );

    builder.addMethod(deserialize.build());
    objectPluginContext.createSupportClass(builder);
    return builder;
  }
 

@Override
public JsonDeserializer<BigInteger> createDeserializer() {
  return new StdDeserializer<BigInteger>(BigInteger.class) {
    @Override
    public BigInteger deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
      // longValue's bits are same as ulong
      long longValue = p.getLongValue();

      // dump bits and parse it as ulong, effectively parse it as ulong
      return new BigInteger(Long.toHexString(longValue), 16);
    }
  };
}
 

protected Deserializer(StdDeserializer<?> src) {
  super(src);
}
 

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

    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());
        }
    });
    module.addSerializer(Instant.class, new StdSerializer<Instant>(Instant.class) {
        @Override
        public void serialize(Instant instant, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
            jsonGenerator.writeNumber(instant.toEpochMilli());
        }
    });
    module.addDeserializer(JWK.class, new StdDeserializer<JWK>(JWK.class) {
        @Override
        public JWK deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
            JsonNode node = jsonParser.getCodec().readTree(jsonParser);
            String kty = node.get("kty").asText();
            if (kty == null) {
                return null;
            }
            JWK jwk = null;
            switch (kty) {
                case "RSA":
                    jwk = jsonParser.getCodec().treeToValue(node, RSAKey.class);
                    break;
                case "EC":
                    jwk = jsonParser.getCodec().treeToValue(node, ECKey.class);
                    break;
                case "oct":
                    jwk = jsonParser.getCodec().treeToValue(node, OCTKey.class);
                    break;
                case "OKP":
                    jwk = jsonParser.getCodec().treeToValue(node, OKPKey.class);
                    break;
            }
            return jwk;
        }
    });
    mapper.addMixIn(Domain.class, MixIn.class);
    mapper.setVisibility(PropertyAccessor.ALL, Visibility.NONE);
    mapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
    mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
    mapper.registerModule(module);
    mapper.registerModule(new Jdk8Module());
    mapper.enable(MapperFeature.ACCEPT_CASE_INSENSITIVE_ENUMS);
}
 

@Override
public void runConversion(int numberOfAttributes, int lengthOfAttribute) {
    int assignmentsTotal, progress = 0;
    assignmentsConverted = submissionsConverted = submissionsFailed = assignmentsFailed = 0;

    SimpleModule module = new SimpleModule().addDeserializer(String.class, new StdDeserializer<String>(String.class) {
        @Override
        public String deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
            String str = StringDeserializer.instance.deserialize(p, ctxt);
            if (StringUtils.isBlank(str)) return null;
            return str;
        }
    });

    // woodstox xml parser defaults we don't allow values smaller than the default
    if (numberOfAttributes < ReaderConfig.DEFAULT_MAX_ATTRIBUTES_PER_ELEMENT) numberOfAttributes = ReaderConfig.DEFAULT_MAX_ATTRIBUTES_PER_ELEMENT;
    if (lengthOfAttribute < ReaderConfig.DEFAULT_MAX_ATTRIBUTE_LENGTH) lengthOfAttribute = ReaderConfig.DEFAULT_MAX_ATTRIBUTE_LENGTH;

    log.info("<===== Assignments conversion xml parser limits: number of attributes={}, attribute size={} =====>", numberOfAttributes, lengthOfAttribute);

    XMLInputFactory xmlInputFactory = XMLInputFactory.newFactory();
    xmlInputFactory.setProperty(WstxInputProperties.P_MAX_ATTRIBUTES_PER_ELEMENT, numberOfAttributes);
    xmlInputFactory.setProperty(WstxInputProperties.P_MAX_ATTRIBUTE_SIZE, lengthOfAttribute);
    xmlMapper = new XmlMapper(xmlInputFactory);
    xmlMapper.registerModule(new Jdk8Module());
    xmlMapper.registerModule(module);

    String configValue = "org.sakaiproject.assignment.api.model.Assignment,org.sakaiproject.assignment.api.model.AssignmentSubmission";
    String currentValue = serverConfigurationService.getConfig(AssignableUUIDGenerator.HIBERNATE_ASSIGNABLE_ID_CLASSES, null);
    if (StringUtils.isNotBlank(currentValue)) {
        configValue = configValue + "," + currentValue;
    }
    ServerConfigurationService.ConfigItem configItem = BasicConfigItem.makeConfigItem(
            AssignableUUIDGenerator.HIBERNATE_ASSIGNABLE_ID_CLASSES,
            configValue,
            AssignmentConversionServiceImpl.class.getName(),
            true);
    serverConfigurationService.registerConfigItem(configItem);

    List<String> preAssignments = dataProvider.fetchAssignmentsToConvert();
    List<String> postAssignments = assignmentRepository.findAllAssignmentIds();
    List<String> convertAssignments = new ArrayList<>(preAssignments);
    convertAssignments.removeAll(postAssignments);
    assignmentsTotal = convertAssignments.size();

    log.info("<===== Assignments pre 12 [{}] and post 12 [{}] to convert {} =====>", preAssignments.size(), postAssignments.size(), assignmentsTotal);

    for (String assignmentId : convertAssignments) {
        try {
            convert(assignmentId);
        } catch (Exception e) {
            log.warn("Assignment conversion exception for {}", assignmentId, e);
        }
        int percent = new Double(((assignmentsConverted + assignmentsFailed) / (double) assignmentsTotal) * 100).intValue();
        if (progress != percent) {
            progress = percent;
            log.info("<===== Assignments conversion completed {}% =====>", percent);
        }
    }

    configItem = BasicConfigItem.makeConfigItem(
            AssignableUUIDGenerator.HIBERNATE_ASSIGNABLE_ID_CLASSES,
            StringUtils.trimToEmpty(currentValue),
            AssignmentConversionServiceImpl.class.getName());
    serverConfigurationService.registerConfigItem(configItem);

    log.info("<===== Assignments converted {} =====>", assignmentsConverted);
    log.info("<===== Submissions converted {} =====>", submissionsConverted);
    log.info("<===== Assignments that failed to be converted {} =====>", assignmentsFailed);
    log.info("<===== Submissions that failed to be converted {} =====>", submissionsFailed);
}
 

@Override
public void runConversion(int numberOfAttributes, int lengthOfAttribute) {
    int assignmentsTotal, progress = 0;
    assignmentsConverted = submissionsConverted = submissionsFailed = assignmentsFailed = 0;

    SimpleModule module = new SimpleModule().addDeserializer(String.class, new StdDeserializer<String>(String.class) {
        @Override
        public String deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
            String str = StringDeserializer.instance.deserialize(p, ctxt);
            if (StringUtils.isBlank(str)) return null;
            return str;
        }
    });

    // woodstox xml parser defaults we don't allow values smaller than the default
    if (numberOfAttributes < ReaderConfig.DEFAULT_MAX_ATTRIBUTES_PER_ELEMENT) numberOfAttributes = ReaderConfig.DEFAULT_MAX_ATTRIBUTES_PER_ELEMENT;
    if (lengthOfAttribute < ReaderConfig.DEFAULT_MAX_ATTRIBUTE_LENGTH) lengthOfAttribute = ReaderConfig.DEFAULT_MAX_ATTRIBUTE_LENGTH;

    log.info("<===== Assignments conversion xml parser limits: number of attributes={}, attribute size={} =====>", numberOfAttributes, lengthOfAttribute);

    XMLInputFactory xmlInputFactory = XMLInputFactory.newFactory();
    xmlInputFactory.setProperty(WstxInputProperties.P_MAX_ATTRIBUTES_PER_ELEMENT, numberOfAttributes);
    xmlInputFactory.setProperty(WstxInputProperties.P_MAX_ATTRIBUTE_SIZE, lengthOfAttribute);
    xmlMapper = new XmlMapper(xmlInputFactory);
    xmlMapper.registerModule(new Jdk8Module());
    xmlMapper.registerModule(module);

    String configValue = "org.sakaiproject.assignment.api.model.Assignment,org.sakaiproject.assignment.api.model.AssignmentSubmission";
    String currentValue = serverConfigurationService.getConfig(AssignableUUIDGenerator.HIBERNATE_ASSIGNABLE_ID_CLASSES, null);
    if (StringUtils.isNotBlank(currentValue)) {
        configValue = configValue + "," + currentValue;
    }
    ServerConfigurationService.ConfigItem configItem = BasicConfigItem.makeConfigItem(
            AssignableUUIDGenerator.HIBERNATE_ASSIGNABLE_ID_CLASSES,
            configValue,
            AssignmentConversionServiceImpl.class.getName(),
            true);
    serverConfigurationService.registerConfigItem(configItem);

    List<String> preAssignments = dataProvider.fetchAssignmentsToConvert();
    List<String> postAssignments = assignmentRepository.findAllAssignmentIds();
    List<String> convertAssignments = new ArrayList<>(preAssignments);
    convertAssignments.removeAll(postAssignments);
    assignmentsTotal = convertAssignments.size();

    log.info("<===== Assignments pre 12 [{}] and post 12 [{}] to convert {} =====>", preAssignments.size(), postAssignments.size(), assignmentsTotal);

    for (String assignmentId : convertAssignments) {
        try {
            convert(assignmentId);
        } catch (Exception e) {
            log.warn("Assignment conversion exception for {}", assignmentId, e);
        }
        int percent = new Double(((assignmentsConverted + assignmentsFailed) / (double) assignmentsTotal) * 100).intValue();
        if (progress != percent) {
            progress = percent;
            log.info("<===== Assignments conversion completed {}% =====>", percent);
        }
    }

    configItem = BasicConfigItem.makeConfigItem(
            AssignableUUIDGenerator.HIBERNATE_ASSIGNABLE_ID_CLASSES,
            StringUtils.trimToEmpty(currentValue),
            AssignmentConversionServiceImpl.class.getName());
    serverConfigurationService.registerConfigItem(configItem);

    log.info("<===== Assignments converted {} =====>", assignmentsConverted);
    log.info("<===== Submissions converted {} =====>", submissionsConverted);
    log.info("<===== Assignments that failed to be converted {} =====>", assignmentsFailed);
    log.info("<===== Submissions that failed to be converted {} =====>", submissionsFailed);
}