Java Code Examples for org.apache.olingo.server.api.serializer.ODataSerializer#primitive()

private SerializerResult serializeProperty(final Entity entity, final EdmEntitySet edmEntitySet,
    final List<String> path, final Property property, final EdmProperty edmProperty,
    final EdmType type, final EdmReturnType returnType,
    final RepresentationType representationType, final ContentType responseFormat,
    final ExpandOption expand, final SelectOption select) throws ODataLibraryException {
  ODataSerializer serializer = odata.createSerializer(responseFormat);
  final ContextURL contextURL = isODataMetadataNone(responseFormat) ? null :
      getContextUrl(edmEntitySet, entity, path, type, representationType, expand, select);
  SerializerResult result = null;
  switch (representationType) {
  case PRIMITIVE:
    result = serializer.primitive(serviceMetadata, (EdmPrimitiveType) type, property,
        PrimitiveSerializerOptions.with().contextURL(contextURL)
            .nullable(edmProperty == null ? returnType.isNullable() : edmProperty.isNullable())
            .maxLength(edmProperty == null ? returnType.getMaxLength() : edmProperty.getMaxLength())
            .precision(edmProperty == null ? returnType.getPrecision() : edmProperty.getPrecision())
            .scale(edmProperty == null ? returnType.getScale() : edmProperty.getScale())
            .unicode(edmProperty == null ? null : edmProperty.isUnicode())
            .build());
    break;
  case COMPLEX:
    result = serializer.complex(serviceMetadata, (EdmComplexType) type, property,
        ComplexSerializerOptions.with().contextURL(contextURL)
            .expand(expand).select(select)
            .build());
    break;
  case COLLECTION_PRIMITIVE:
    result = serializer.primitiveCollection(serviceMetadata, (EdmPrimitiveType) type, property,
        PrimitiveSerializerOptions.with().contextURL(contextURL)
            .nullable(edmProperty == null ? returnType.isNullable() : edmProperty.isNullable())
            .maxLength(edmProperty == null ? returnType.getMaxLength() : edmProperty.getMaxLength())
            .precision(edmProperty == null ? returnType.getPrecision() : edmProperty.getPrecision())
            .scale(edmProperty == null ? returnType.getScale() : edmProperty.getScale())
            .unicode(edmProperty == null ? null : edmProperty.isUnicode())
            .build());
    break;
  case COLLECTION_COMPLEX:
    result = serializer.complexCollection(serviceMetadata, (EdmComplexType) type, property,
        ComplexSerializerOptions.with().contextURL(contextURL)
            .expand(expand).select(select)
            .build());
    break;
  default:
    break;
  }
  return result;
}
 

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 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 
	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 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
  // 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.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());
	}
}