Java Code Examples for org.apache.olingo.commons.api.data.Property#getValue()

@Override
public VisitorOperand visitMember(Member member) throws ExpressionVisitException, ODataApplicationException {
    final List<UriResource> uriResourceParts = member.getResourcePath().getUriResourceParts();
    int size = uriResourceParts.size();
    if (uriResourceParts.get(0) instanceof UriResourceProperty) {
        EdmProperty currentEdmProperty = ((UriResourceProperty) uriResourceParts.get(0)).getProperty();
        Property currentProperty = entity.getProperty(currentEdmProperty.getName());
        return new TypedOperand(currentProperty.getValue(), currentEdmProperty.getType(), currentEdmProperty);
    } else if (uriResourceParts.get(size - 1) instanceof UriResourceLambdaAll) {
        return throwNotImplemented();
    } else if (uriResourceParts.get(size - 1) instanceof UriResourceLambdaAny) {
        return throwNotImplemented();
    } else {
        return throwNotImplemented();
    }
}
 

@SuppressWarnings("unchecked")
public void updateProperty(final EdmProperty edmProperty, Property property, final Property newProperty,
    final boolean patch) throws DataProviderException {
  if(property == null){
    throw new DataProviderException("Cannot update type of the entity",
        HttpStatusCode.BAD_REQUEST);
  }
  final EdmType type = edmProperty.getType();
  if (edmProperty.isCollection()) {
    // Updating collection properties means replacing all entries with the given ones.
    property.asCollection().clear();

    if (newProperty != null) {
      if (type.getKind() == EdmTypeKind.COMPLEX) {
        // Create each complex value.
        for (final ComplexValue complexValue : (List<ComplexValue>) newProperty.asCollection()) {
          ((List<ComplexValue>) property.asCollection()).add(createComplexValue(edmProperty, complexValue, patch));
        }
      } else {
        // Primitive type
        ((List<Object>) property.asCollection()).addAll(newProperty.asCollection());
      }
    }
  } else if (type.getKind() == EdmTypeKind.COMPLEX) {
    for (final String propertyName : ((EdmComplexType) type).getPropertyNames()) {
      final List<Property> newProperties = newProperty == null || newProperty.asComplex() == null ? null :
          newProperty.asComplex().getValue();
      updateProperty(((EdmComplexType) type).getStructuralProperty(propertyName),
          findProperty(propertyName, property.asComplex().getValue()),
          newProperties == null ? null : findProperty(propertyName, newProperties),
          patch);
    }
  } else {
    if (newProperty != null || !patch) {
      final Object value = newProperty == null ? null : newProperty.getValue();
      updatePropertyValue(property, value);
    }
  }
}
 

private Object findPropertyRefValue(Entity entity, EdmKeyPropertyRef refType) throws SerializerException {
  final int INDEX_ERROR_CODE = -1;
  final String propertyPath = refType.getName();
  String tmpPropertyName;
  int lastIndex;
  int index = propertyPath.indexOf('/');
  if (index == INDEX_ERROR_CODE) {
      index  = propertyPath.length();
  }
  tmpPropertyName = propertyPath.substring(0, index);
  //get first property
  Property prop = entity.getProperty(tmpPropertyName);
  //get following properties
  while (index < propertyPath.length()) {
      lastIndex = ++index;
      index = propertyPath.indexOf('/', index+1);
      if (index == INDEX_ERROR_CODE) {
          index = propertyPath.length();
      }
      tmpPropertyName = propertyPath.substring(lastIndex, index);
      prop = findProperty(tmpPropertyName, prop.asComplex().getValue());
   }
  if (prop == null) {
    throw new SerializerException("Key Value Cannot be null for property: " + propertyPath, 
        SerializerException.MessageKeys.NULL_PROPERTY, propertyPath);
  }
  return prop.getValue();
}
 

@Override
public void updateProperty(DataRequest request, final Property property, boolean rawValue, boolean merge,
    String entityETag, PropertyResponse response) throws ODataLibraryException,
    ODataApplicationException {

  if (rawValue && property.getValue() != null) {
    // this is more generic, stricter conversion rules must taken in a real service
    byte[] value = (byte[])property.getValue();
    property.setValue(ValueType.PRIMITIVE, new String(value));
  }
  
  EdmEntitySet edmEntitySet = request.getEntitySet();
  Entity entity = this.dataModel.getEntity(edmEntitySet.getName(), request.getKeyPredicates());
  if (entity == null) {
    response.writeNotFound(true);
    return;
  }

  String key = edmEntitySet.getEntityType().getKeyPredicateNames().get(0);
  boolean replaced = this.dataModel.updateProperty(edmEntitySet.getName(), entityETag, key,
      entity.getProperty(key).getValue(), property);

  if (replaced) {
    if (property.getValue() == null) {
      response.writePropertyDeleted();
    } else {
      response.writePropertyUpdated();
    }
  } else {
    response.writeServerError(true);
  }
}
 

@Override
public void readPrimitiveValue(ODataRequest request, ODataResponse response, UriInfo uriInfo, ContentType format)
        throws ODataApplicationException, SerializerException {
  // First we have to figure out which entity set the requested entity is in
  final EdmEntitySet edmEntitySet = getEdmEntitySet(uriInfo.asUriInfoResource());
  // Next we fetch the requested entity from the database
  final Entity entity;
  try {
    entity = readEntityInternal(uriInfo.asUriInfoResource(), edmEntitySet);
  } catch (DataProviderException e) {
    throw new ODataApplicationException(e.getMessage(), 500, Locale.ENGLISH);
  }
  if (entity == null) {
    // If no entity was found for the given key we throw an exception.
    throw new ODataApplicationException("No entity found for this key", HttpStatusCode.NOT_FOUND
            .getStatusCode(), Locale.ENGLISH);
  } else {
    // Next we get the property value from the entity and pass the value to serialization
    UriResourceProperty uriProperty = (UriResourceProperty) uriInfo
            .getUriResourceParts().get(uriInfo.getUriResourceParts().size() - 1);
    EdmProperty edmProperty = uriProperty.getProperty();
    Property property = entity.getProperty(edmProperty.getName());
    if (property == null) {
      throw new ODataApplicationException("No property found", HttpStatusCode.NOT_FOUND
              .getStatusCode(), Locale.ENGLISH);
    } else {
      if (property.getValue() == null) {
        response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
      } else {
        String value = String.valueOf(property.getValue());
        ByteArrayInputStream serializerContent = new ByteArrayInputStream(
                value.getBytes(Charset.forName("UTF-8")));
        response.setContent(serializerContent);
        response.setStatusCode(HttpStatusCode.OK.getStatusCode());
        response.setHeader(HttpHeader.CONTENT_TYPE, ContentType.TEXT_PLAIN.toContentTypeString());
      }
    }
  }
}
 

public void readPrimitive(ODataRequest request, ODataResponse response, 
							UriInfo uriInfo, ContentType responseFormat) 
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set 
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0); 
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();
	
	// 1.2. retrieve the requested (Edm) property 
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); // the last segment is the Property
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType(); 
	
	
	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found",
						HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	} 
	
	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found",
             HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}		
	
	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);
		
		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult result = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		
		//4. configure the response object
		response.setContent(result.getContent());
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());		
	}else{
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response,
    UriInfo uriInfo, ContentType responseFormat)
    throws ODataApplicationException, SerializerException {

  // 1. Retrieve info from URI
  // 1.1. retrieve the info about the requested entity set
  List<UriResource> resourceParts = uriInfo.getUriResourceParts();
  // Note: only in our example we can rely that the first segment is the EntitySet
  UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0);
  EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
  // the key for the entity
  List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();

  // 1.2. retrieve the requested (Edm) property
  // the last segment is the Property
  UriResourceProperty uriProperty = (UriResourceProperty) resourceParts.get(resourceParts.size() - 1);
  EdmProperty edmProperty = uriProperty.getProperty();
  String edmPropertyName = edmProperty.getName();
  // in our example, we know we have only primitive types in our model
  EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType();

  // 2. retrieve data from backend
  // 2.1. retrieve the entity data, for which the property has to be read
  Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
  if (entity == null) { // Bad request
    throw new ODataApplicationException("Entity not found",
        HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
  }

  // 2.2. retrieve the property data from the entity
  Property property = entity.getProperty(edmPropertyName);
  if (property == null) {
    throw new ODataApplicationException("Property not found",
        HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
  }

  // 3. serialize
  Object value = property.getValue();
  if (value != null) {
    // 3.1. configure the serializer
    ODataSerializer serializer = odata.createSerializer(responseFormat);

    ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
    PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
    // 3.2. serialize
    SerializerResult serializerResult = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
    InputStream propertyStream = serializerResult.getContent();

    // 4. configure the response object
    response.setContent(propertyStream);
    response.setStatusCode(HttpStatusCode.OK.getStatusCode());
    response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
  } else {
    // in case there's no value for the property, we can skip the serialization
    response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
  }
}
 

public void readPrimitive(ODataRequest request, ODataResponse response, 
							UriInfo uriInfo, ContentType responseFormat) 
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set 
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0); 
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();
	
	// 1.2. retrieve the requested (Edm) property 
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); // the last segment is the Property
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType(); 
	
	
	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found",
						HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	} 
	
	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found",
             HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}		
	
	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);
		
		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult result = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		
		//4. configure the response object
		response.setContent(result.getContent());
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());		
	}else{
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response, 
							UriInfo uriInfo, ContentType responseFormat) 
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set 
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0); 
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();
	
	// 1.2. retrieve the requested (Edm) property 
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); // the last segment is the Property
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType(); 
	
	
	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found",
						HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	} 
	
	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found",
             HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}		
	
	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);
		
		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult result = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		
		//4. configure the response object
		response.setContent(result.getContent());
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());		
	}else{
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response,
							UriInfo uriInfo, ContentType responseFormat)
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0);
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();

	// 1.2. retrieve the requested (Edm) property
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); // the last segment is the Property
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType();


	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}

	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}

	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);

		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult serializerResult = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		InputStream propertyStream = serializerResult.getContent();

		//4. configure the response object
		response.setContent(propertyStream);
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
	} else {
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response,
    UriInfo uriInfo, ContentType responseFormat)
    throws ODataApplicationException, SerializerException {

  // 1. Retrieve info from URI
  // 1.1. retrieve the info about the requested entity set
  List<UriResource> resourceParts = uriInfo.getUriResourceParts();
  // Note: only in our example we can rely that the first segment is the EntitySet
  UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0);
  EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
  // the key for the entity
  List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();

  // 1.2. retrieve the requested (Edm) property
  // the last segment is the Property
  UriResourceProperty uriProperty = (UriResourceProperty) resourceParts.get(resourceParts.size() - 1);
  EdmProperty edmProperty = uriProperty.getProperty();
  String edmPropertyName = edmProperty.getName();
  // in our example, we know we have only primitive types in our model
  EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType();

  // 2. retrieve data from backend
  // 2.1. retrieve the entity data, for which the property has to be read
  Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
  if (entity == null) { // Bad request
    throw new ODataApplicationException("Entity not found",
        HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
  }

  // 2.2. retrieve the property data from the entity
  Property property = entity.getProperty(edmPropertyName);
  if (property == null) {
    throw new ODataApplicationException("Property not found",
        HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
  }

  // 3. serialize
  Object value = property.getValue();
  if (value != null) {
    // 3.1. configure the serializer
    ODataSerializer serializer = odata.createSerializer(responseFormat);

    ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
    PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
    // 3.2. serialize
    SerializerResult serializerResult = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
    InputStream propertyStream = serializerResult.getContent();

    // 4. configure the response object
    response.setContent(propertyStream);
    response.setStatusCode(HttpStatusCode.OK.getStatusCode());
    response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
  } else {
    // in case there's no value for the property, we can skip the serialization
    response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
  }
}
 

public void readPrimitive(ODataRequest request, ODataResponse response, 
							UriInfo uriInfo, ContentType responseFormat) 
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set 
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0); 
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();
	
	// 1.2. retrieve the requested (Edm) property 
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); // the last segment is the Property
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType(); 
	
	
	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found",
						HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	} 
	
	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found",
             HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}		
	
	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);
		
		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult result = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		
		//4. configure the response object
		response.setContent(result.getContent());
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());		
	}else{
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response,
							UriInfo uriInfo, ContentType responseFormat)
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0);
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();

	// 1.2. retrieve the requested (Edm) property
	// the last segment is the Property
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); 
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType();


	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}

	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found", HttpStatusCode.NOT_FOUND.getStatusCode(), 
		                                    Locale.ENGLISH);
	}

	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);

		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult serializerResult = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		InputStream propertyStream = serializerResult.getContent();

		//4. configure the response object
		response.setContent(propertyStream);
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
	} else {
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response, 
							UriInfo uriInfo, ContentType responseFormat) 
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set 
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0); 
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();
	
	// 1.2. retrieve the requested (Edm) property 
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); // the last segment is the Property
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType(); 
	
	
	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found",
						HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	} 
	
	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found",
             HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}		
	
	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);
		
		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult result = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		
		//4. configure the response object
		response.setContent(result.getContent());
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());		
	}else{
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response,UriInfo uriInfo, ContentType responseFormat) 
    throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0);
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();

	// 1.2. retrieve the requested (Edm) property
	// the last segment is the Property
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); 
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType();


	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}

	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found", HttpStatusCode.NOT_FOUND.getStatusCode(), 
		                                    Locale.ENGLISH);
	}

	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);

		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult serializerResult = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		InputStream propertyStream = serializerResult.getContent();

		//4. configure the response object
		response.setContent(propertyStream);
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
	} else {
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response,
							UriInfo uriInfo, ContentType responseFormat)
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0);
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();

	// 1.2. retrieve the requested (Edm) property
	// the last segment is the Property
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); 
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType();


	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}

	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found", HttpStatusCode.NOT_FOUND.getStatusCode(), 
		                                    Locale.ENGLISH);
	}

	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);

		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult serializerResult = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		InputStream propertyStream = serializerResult.getContent();

		//4. configure the response object
		response.setContent(propertyStream);
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
	} else {
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response, 
							UriInfo uriInfo, ContentType responseFormat) 
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set 
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0); 
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();
	
	// 1.2. retrieve the requested (Edm) property 
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); // the last segment is the Property
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType(); 
	
	
	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found",
						HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	} 
	
	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found",
             HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}		
	
	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);
		
		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult result = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		
		//4. configure the response object
		response.setContent(result.getContent());
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());		
	}else{
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

private void readProperty(final ODataRequest request, ODataResponse response, final UriInfo uriInfo,
    final ContentType contentType, final RepresentationType representationType)
        throws ODataApplicationException, ODataLibraryException {
  final UriInfoResource resource = uriInfo.asUriInfoResource();
  validateOptions(resource);
  validatePath(resource);
  final EdmEntitySet edmEntitySet = getEdmEntitySet(resource);

  final List<UriResource> resourceParts = resource.getUriResourceParts();
  final int trailing =
      representationType == RepresentationType.COUNT || representationType == RepresentationType.VALUE ? 1 : 0;
  final List<String> path = getPropertyPath(resourceParts, trailing);

  final Entity entity = readEntity(uriInfo);

  if (entity != null && entity.getETag() != null) {
    if (odata.createETagHelper().checkReadPreconditions(entity.getETag(),
        request.getHeaders(HttpHeader.IF_MATCH),
        request.getHeaders(HttpHeader.IF_NONE_MATCH))) {
      response.setStatusCode(HttpStatusCode.NOT_MODIFIED.getStatusCode());
      response.setHeader(HttpHeader.ETAG, entity.getETag());
      return;
    }
  }

  final Property property = entity == null ?
      getPropertyData(
          dataProvider.readFunctionPrimitiveComplex(((UriResourceFunction) resourceParts.get(0)).getFunction(),
          ((UriResourceFunction) resourceParts.get(0)).getParameters(), resource), path) :
      getData(entity, path, resourceParts, resource);

  // TODO: implement filter on collection properties (on a shallow copy of the values)
  // FilterHandler.applyFilterSystemQuery(uriInfo.getFilterOption(), property, uriInfo, serviceMetadata.getEdm());

  if (property == null && representationType != RepresentationType.COUNT) {
    if (representationType == RepresentationType.VALUE) {
      response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
    } else {
      throw new ODataApplicationException("Nothing found.", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ROOT);
    }
  } else {
    if (property.getValue() == null && representationType != RepresentationType.COUNT) {
      response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
    } else {
      response.setStatusCode(HttpStatusCode.OK.getStatusCode());
      if (representationType == RepresentationType.COUNT) {
        response.setContent(odata.createFixedFormatSerializer().count(
            property.asCollection().size()));
      } else {
        final EdmProperty edmProperty = path.isEmpty() ? null :
            ((UriResourceProperty) resourceParts.get(resourceParts.size() - trailing - 1)).getProperty();
        EdmType type = null;
        if (resourceParts.get(resourceParts.size() - trailing - 1) 
           instanceof UriResourceComplexProperty &&
            ((UriResourceComplexProperty)resourceParts.get(resourceParts.size() - trailing - 1)).
            getComplexTypeFilter() != null) {
          type = ((UriResourceComplexProperty)resourceParts.get(resourceParts.size() - trailing - 1)).
              getComplexTypeFilter();
        }else if(resourceParts.get(resourceParts.size() - trailing - 1) 
           instanceof UriResourceFunction &&
            ((UriResourceFunction)resourceParts.get(resourceParts.size() - trailing - 1)).
            getFunction() != null){ 
          type = ((UriResourceFunction)resourceParts.get(resourceParts.size() - trailing - 1)).
              getType();
        }else {
          type = edmProperty == null ?
              ((UriResourceFunction) resourceParts.get(0)).getType() :
              edmProperty.getType();
        }
        final EdmReturnType returnType = resourceParts.get(0) instanceof UriResourceFunction ?
            ((UriResourceFunction) resourceParts.get(0)).getFunction().getReturnType() : 
              resourceParts.get(1) instanceof UriResourceFunction ? 
                  ((UriResourceFunction) resourceParts.get(1)).getFunction().getReturnType():null ;

        if (representationType == RepresentationType.VALUE) {
          response.setContent(serializePrimitiveValue(property, edmProperty, (EdmPrimitiveType) type, returnType));
        }else if(representationType == RepresentationType.PRIMITIVE && type.getFullQualifiedName()
            .getFullQualifiedNameAsString().equals(EDMSTREAM)){
          response.setContent(odata.createFixedFormatSerializer().binary(dataProvider.readStreamProperty(property)));
          response.setStatusCode(HttpStatusCode.OK.getStatusCode());
          response.setHeader(HttpHeader.CONTENT_TYPE, ((Link)property.getValue()).getType());
          if (entity.getMediaETag() != null) {
            response.setHeader(HttpHeader.ETAG, entity.getMediaETag());
          }
        }else {
          final ExpandOption expand = uriInfo.getExpandOption();
          final SelectOption select = uriInfo.getSelectOption();
          final SerializerResult result = serializeProperty(entity, edmEntitySet, path, property, edmProperty,
              type, returnType, representationType, contentType, expand, select);
          response.setContent(result.getContent());
        }
      }
      response.setHeader(HttpHeader.CONTENT_TYPE, contentType.toContentTypeString());
    }
    if (entity != null && entity.getETag() != null) {
      response.setHeader(HttpHeader.ETAG, entity.getETag());
    }
  }
}
 

public void readPrimitive(ODataRequest request, ODataResponse response,
							UriInfo uriInfo, ContentType responseFormat)
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0);
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();

	// 1.2. retrieve the requested (Edm) property
	// the last segment is the Property
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1);
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType();


	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ROOT);
	}

	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found", HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ROOT);
	}

	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);

		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult serializerResult = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		InputStream propertyStream = serializerResult.getContent();

		//4. configure the response object
		response.setContent(propertyStream);
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
	} else {
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}
 

public void readPrimitive(ODataRequest request, ODataResponse response, 
							UriInfo uriInfo, ContentType responseFormat) 
							throws ODataApplicationException, SerializerException {

	// 1. Retrieve info from URI
	// 1.1. retrieve the info about the requested entity set 
	List<UriResource> resourceParts = uriInfo.getUriResourceParts();
	// Note: only in our example we can rely that the first segment is the EntitySet
	UriResourceEntitySet uriEntityset = (UriResourceEntitySet) resourceParts.get(0); 
	EdmEntitySet edmEntitySet = uriEntityset.getEntitySet();
	// the key for the entity
	List<UriParameter> keyPredicates = uriEntityset.getKeyPredicates();
	
	// 1.2. retrieve the requested (Edm) property 
	UriResourceProperty uriProperty = (UriResourceProperty)resourceParts.get(resourceParts.size() -1); // the last segment is the Property
	EdmProperty edmProperty = uriProperty.getProperty();
	String edmPropertyName = edmProperty.getName();
	// in our example, we know we have only primitive types in our model
	EdmPrimitiveType edmPropertyType = (EdmPrimitiveType) edmProperty.getType(); 
	
	
	// 2. retrieve data from backend
	// 2.1. retrieve the entity data, for which the property has to be read
	Entity entity = storage.readEntityData(edmEntitySet, keyPredicates);
	if (entity == null) { // Bad request
		throw new ODataApplicationException("Entity not found",
						HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	} 
	
	// 2.2. retrieve the property data from the entity
	Property property = entity.getProperty(edmPropertyName);
	if (property == null) {
		throw new ODataApplicationException("Property not found",
             HttpStatusCode.NOT_FOUND.getStatusCode(), Locale.ENGLISH);
	}		
	
	// 3. serialize
	Object value = property.getValue();
	if (value != null) {
		// 3.1. configure the serializer
		ODataSerializer serializer = odata.createSerializer(responseFormat);
		
		ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).navOrPropertyPath(edmPropertyName).build();
		PrimitiveSerializerOptions options = PrimitiveSerializerOptions.with().contextURL(contextUrl).build();
		// 3.2. serialize
		SerializerResult result = serializer.primitive(serviceMetadata, edmPropertyType, property, options);
		
		//4. configure the response object
		response.setContent(result.getContent());
		response.setStatusCode(HttpStatusCode.OK.getStatusCode());
		response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());		
	}else{
		// in case there's no value for the property, we can skip the serialization
		response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
	}
}