Java Code Examples for org.apache.olingo.commons.api.edm.EdmProperty#isNullable()

private void consumeEntityProperties(final EdmEntityType edmEntityType, final ObjectNode node,
    final Entity entity) throws DeserializerException {
  List<String> propertyNames = edmEntityType.getPropertyNames();
  for (String propertyName : propertyNames) {
    JsonNode jsonNode = node.get(propertyName);
    if (jsonNode != null) {
      EdmProperty edmProperty = (EdmProperty) edmEntityType.getProperty(propertyName);
      if (jsonNode.isNull() && !edmProperty.isNullable()) {
        throw new DeserializerException("Property: " + propertyName + " must not be null.",
            DeserializerException.MessageKeys.INVALID_NULL_PROPERTY, propertyName);
      }
      Property property = consumePropertyNode(edmProperty.getName(), edmProperty.getType(),
          edmProperty.isCollection(), edmProperty.isNullable(), edmProperty.getMaxLength(),
          edmProperty.getPrecision(), edmProperty.getScale(), edmProperty.isUnicode(), edmProperty.getMapping(),
          jsonNode);
      entity.addProperty(property);
      node.remove(propertyName);
    }
  }
}
 

private void validatePropertyOperations(final UriInfo uriInfo, final HttpMethod method)
    throws UriValidationException {
  final List<UriResource> parts = uriInfo.getUriResourceParts();
  final UriResource last = !parts.isEmpty() ? parts.get(parts.size() - 1) : null;
  final UriResource previous = parts.size() > 1 ? parts.get(parts.size() - 2) : null;
  if (last != null
      && (last.getKind() == UriResourceKind.primitiveProperty
      || last.getKind() == UriResourceKind.complexProperty
      || (last.getKind() == UriResourceKind.value
          && previous != null && previous.getKind() == UriResourceKind.primitiveProperty))) {
    final EdmProperty property = ((UriResourceProperty)
        (last.getKind() == UriResourceKind.value ? previous : last)).getProperty();
    if (method == HttpMethod.PATCH && property.isCollection()) {
      throw new UriValidationException("Attempt to patch collection property.",
          UriValidationException.MessageKeys.UNSUPPORTED_HTTP_METHOD, method.toString());
    }
    if (method == HttpMethod.DELETE && !property.isNullable()) {
      throw new UriValidationException("Attempt to delete non-nullable property.",
          UriValidationException.MessageKeys.UNSUPPORTED_HTTP_METHOD, method.toString());
    }
  }
}
 

private ComplexValue createComplexValue(final EdmProperty edmProperty, final ComplexValue complexValue,
    final boolean patch) throws DataProviderException {
  final ComplexValue result = new ComplexValue();
  EdmComplexType edmType = (EdmComplexType) edmProperty.getType();
  final List<Property> givenProperties = complexValue.getValue();
  if(complexValue.getTypeName()!=null){
    EdmComplexType derivedType = edm.getComplexType(new FullQualifiedName(complexValue.getTypeName()));
    if(derivedType.getBaseType()!=null && edmType.getFullQualifiedName().getFullQualifiedNameAsString()
        .equals(derivedType.getBaseType().getFullQualifiedName().getFullQualifiedNameAsString())){
    edmType = derivedType;
    }
  }
  // Create ALL properties, even if no value is given. Check if null is allowed
  for (final String propertyName : edmType.getPropertyNames()) {
    final EdmProperty innerEdmProperty = (EdmProperty) edmType.getProperty(propertyName);
    final Property currentProperty = findProperty(propertyName, givenProperties);
    final Property newProperty = createProperty(innerEdmProperty, propertyName);
    result.getValue().add(newProperty);

    if (currentProperty != null) {
      updateProperty(innerEdmProperty, newProperty, currentProperty, patch);
    } else {
      if (innerEdmProperty.isNullable()) {
        // Check complex properties ... may be null is not allowed
        if (edmProperty.getType().getKind() == EdmTypeKind.COMPLEX) {
          updateProperty(innerEdmProperty, newProperty, null, patch);
        }
      }
    }
  }
  result.setTypeName(edmType.getFullQualifiedName().getFullQualifiedNameAsString());
  return result;
}
 

private void deleteProperty(final ODataRequest request, ODataResponse response, final UriInfo uriInfo,
    final boolean isValue) throws ODataLibraryException, ODataApplicationException {
  final UriInfoResource resource = uriInfo.asUriInfoResource();
  validatePath(resource);
  getEdmEntitySet(uriInfo); // including checks

  Entity entity = readEntity(uriInfo);
  odata.createETagHelper().checkChangePreconditions(entity.getETag(),
      request.getHeaders(HttpHeader.IF_MATCH),
      request.getHeaders(HttpHeader.IF_NONE_MATCH));

  final List<UriResource> resourceParts = resource.getUriResourceParts();
  final int trailing = isValue ? 1 : 0;
  final List<String> path = getPropertyPath(resourceParts, trailing);

  Property property = getPropertyData(entity, path);

  final EdmProperty edmProperty = ((UriResourceProperty) resourceParts.get(resourceParts.size() - trailing - 1))
      .getProperty();

  if (edmProperty.isNullable()) {
    property.setValue(property.getValueType(), edmProperty.isCollection() ? Collections.emptyList() : null);
    dataProvider.updateETag(entity);
    response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
    if (entity.getETag() != null) {
      response.setHeader(HttpHeader.ETAG, entity.getETag());
    }
  } else {
    throw new ODataApplicationException("Not nullable.", HttpStatusCode.BAD_REQUEST.getStatusCode(), Locale.ROOT);
  }
}
 

/** Sets all facets from an EDM property. */
public Builder facetsFrom(final EdmProperty property) {
  options.isNullable = property.isNullable();
  options.maxLength = property.getMaxLength();
  options.precision = property.getPrecision();
  options.scale = property.getScale();
  options.isUnicode = property.isUnicode();
  return this;
}
 

/** Sets all facets from an EDM property. */
public Builder facetsFrom(final EdmProperty property) {
  options.isNullable = property.isNullable();
  options.maxLength = property.getMaxLength();
  options.precision = property.getPrecision();
  options.scale = property.getScale();
  options.isUnicode = property.isUnicode();
  return this;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams) 
    throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();
    
    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString //
    String valueAsString = null;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value", HttpStatusCode.INTERNAL_SERVER_ERROR
          .getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

public PropertyMetadata visit(EdmProperty property) {
    this.nullable = property.isNullable();
    this.isCollection = property.isCollection();
    return visit(property.getType());
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams)
        throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();

    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString
    String valueAsString;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value", HttpStatusCode.INTERNAL_SERVER_ERROR
              .getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity rt_entity,
    List<UriParameter> keyParams) {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();

    // note: below line doesn't consider: keyProp can be part of a complexType in V4
    // in such case, it would be required to access it via getKeyPropertyRef()
    // but since this isn't the case in our model, we ignore it in our implementation
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    // Edm: we need this info for the comparison below
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    // if(EdmType instanceof EdmPrimitiveType) // do we need this?
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in FWK
    Object valueObject = rt_entity.getProperty(keyName).getValue();
    // TODO if the property is a complex type

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString
    String valueAsString = null;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable,
          maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      return false; // TODO proper Exception handling
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    // if any of the key properties is not found in the entity, we don't need to search further
    if (!matches) {
      return false;
    }
    // if the given key value is found in the current entity, continue with the next key
  }

  return true;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams)
        throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();

    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString
    String valueAsString;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value", HttpStatusCode.INTERNAL_SERVER_ERROR
              .getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

public static boolean
    entityMatchesAllKeys(EdmEntityType edmEntityType, Entity rt_entity, List<UriParameter> keyParams)
        throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();

    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    // if(EdmType instanceof EdmPrimitiveType) // do we need this?
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = rt_entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using type.valueToString
    String valueAsString = null;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value",
				HttpStatusCode.INTERNAL_SERVER_ERROR.getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams) 
    throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();
    
    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString //
    String valueAsString = null;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value", HttpStatusCode.INTERNAL_SERVER_ERROR
          .getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams)
        throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();
    
    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString //
    String valueAsString = null;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value", HttpStatusCode.INTERNAL_SERVER_ERROR
          .getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity rt_entity,
    List<UriParameter> keyParams) {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();

    // note: below line doesn't consider: keyProp can be part of a complexType in V4
    // in such case, it would be required to access it via getKeyPropertyRef()
    // but since this isn't the case in our model, we ignore it in our implementation
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    // Edm: we need this info for the comparison below
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    // if(EdmType instanceof EdmPrimitiveType) // do we need this?
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in FWK
    Object valueObject = rt_entity.getProperty(keyName).getValue();
    // TODO if the property is a complex type

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString
    String valueAsString = null;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable,
          maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      return false; // TODO proper Exception handling
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    // if any of the key properties is not found in the entity, we don't need to search further
    if (!matches) {
      return false;
    }
    // if the given key value is found in the current entity, continue with the next key
  }

  return true;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams)
        throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();
    
    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString //
    String valueAsString = null;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value", HttpStatusCode.INTERNAL_SERVER_ERROR
          .getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams) 
    throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();
    
    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString //
    String valueAsString = null;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value", HttpStatusCode.INTERNAL_SERVER_ERROR
          .getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

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

  Entity entity = readEntity(uriInfo);
  odata.createETagHelper().checkChangePreconditions(entity.getETag(),
      request.getHeaders(HttpHeader.IF_MATCH),
      request.getHeaders(HttpHeader.IF_NONE_MATCH));

  final List<UriResource> resourceParts = resource.getUriResourceParts();
  final int trailing = representationType == RepresentationType.VALUE ? 1 : 0;
  final List<String> path = getPropertyPath(resourceParts, trailing);
  final EdmProperty edmProperty = ((UriResourceProperty) resourceParts.get(resourceParts.size() - trailing - 1))
      .getProperty();

  Property property = getPropertyData(entity, path);

  if (representationType == RepresentationType.VALUE || 
  		edmProperty.getType().getFullQualifiedName()
  		.getFullQualifiedNameAsString().equalsIgnoreCase(EDMSTREAM)) {
    final FixedFormatDeserializer deserializer = odata.createFixedFormatDeserializer();
    final Object value = edmProperty.getType() == odata.createPrimitiveTypeInstance(EdmPrimitiveTypeKind.Binary) 
  		  || edmProperty.getType() == odata.createPrimitiveTypeInstance(EdmPrimitiveTypeKind.Stream) ?
        deserializer.binary(request.getBody()) :
        deserializer.primitiveValue(request.getBody(), edmProperty);
    dataProvider.updatePropertyValue(property, value);
  } else {
    final Property changedProperty = odata.createDeserializer(requestFormat)
        .property(request.getBody(), edmProperty).getProperty();
    if (changedProperty.isNull() && !edmProperty.isNullable()) {
      throw new ODataApplicationException("Not nullable.", HttpStatusCode.BAD_REQUEST.getStatusCode(), Locale.ROOT);
    }
    dataProvider.updateProperty(edmProperty, property, changedProperty, request.getMethod() == HttpMethod.PATCH);
  }

  dataProvider.updateETag(entity);

  final Return returnPreference = odata.createPreferences(request.getHeaders(HttpHeader.PREFER)).getReturn();
  if (returnPreference == null || returnPreference == Return.REPRESENTATION) {
    response.setStatusCode(HttpStatusCode.OK.getStatusCode());
    if (representationType == RepresentationType.VALUE || 
      		edmProperty.getType().getFullQualifiedName()
        		.getFullQualifiedNameAsString().equalsIgnoreCase(EDMSTREAM)) {
      response.setContent(
          serializePrimitiveValue(property, edmProperty, (EdmPrimitiveType) edmProperty.getType(), null));
    } else {
      final SerializerResult result = serializeProperty(entity, edmEntitySet, path, property, edmProperty,
          edmProperty.getType(), null, representationType, responseFormat, null, null);
      response.setContent(result.getContent());
    }
    if (edmProperty.getType().getFullQualifiedName()
      		.getFullQualifiedNameAsString().equalsIgnoreCase(EDMSTREAM)) {
    	  response.setHeader(HttpHeader.CONTENT_TYPE, requestFormat.toContentTypeString());
      } else {
    	  response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
      }
  } else {
    response.setStatusCode(HttpStatusCode.NO_CONTENT.getStatusCode());
  }
  if (returnPreference != null) {
    response.setHeader(HttpHeader.PREFERENCE_APPLIED,
        PreferencesApplied.with().returnRepresentation(returnPreference).build().toValueString());
  }
  if (entity.getETag() != null) {
    response.setHeader(HttpHeader.ETAG, entity.getETag());
  }
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams)
        throws ODataApplicationException {

  // loop over all keys
  for (final UriParameter key : keyParams) {
    // key
    String keyName = key.getName();
    String keyText = key.getText();

    // Edm: we need this info for the comparison below
    EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
    Boolean isNullable = edmKeyProperty.isNullable();
    Integer maxLength = edmKeyProperty.getMaxLength();
    Integer precision = edmKeyProperty.getPrecision();
    Boolean isUnicode = edmKeyProperty.isUnicode();
    Integer scale = edmKeyProperty.getScale();
    // get the EdmType in order to compare
    EdmType edmType = edmKeyProperty.getType();
    EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;

    // Runtime data: the value of the current entity
    // don't need to check for null, this is done in olingo library
    Object valueObject = entity.getProperty(keyName).getValue();

    // now need to compare the valueObject with the keyText String
    // this is done using the type.valueToString
    String valueAsString;
    try {
      valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
    } catch (EdmPrimitiveTypeException e) {
      throw new ODataApplicationException("Failed to retrieve String value", HttpStatusCode.INTERNAL_SERVER_ERROR
              .getStatusCode(), Locale.ENGLISH, e);
    }

    if (valueAsString == null) {
      return false;
    }

    boolean matches = valueAsString.equals(keyText);
    if (!matches) {
      // if any of the key properties is not found in the entity, we don't need to search further
      return false;
    }
  }

  return true;
}
 

public static boolean entityMatchesAllKeys(EdmEntityType edmEntityType, Entity entity, List<UriParameter> keyParams)
    throws ODataApplicationException {

    // loop over all keys
    for (final UriParameter key : keyParams) {
        // key
        String keyName = key.getName();
        String keyText = key.getText();

        // Edm: we need this info for the comparison below
        EdmProperty edmKeyProperty = (EdmProperty)edmEntityType.getProperty(keyName);
        Boolean isNullable = edmKeyProperty.isNullable();
        Integer maxLength = edmKeyProperty.getMaxLength();
        Integer precision = edmKeyProperty.getPrecision();
        Boolean isUnicode = edmKeyProperty.isUnicode();
        Integer scale = edmKeyProperty.getScale();
        // get the EdmType in order to compare
        EdmType edmType = edmKeyProperty.getType();
        EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType)edmType;

        // Runtime data: the value of the current entity
        // don't need to check for null, this is done in olingo library
        Object valueObject = entity.getProperty(keyName).getValue();

        // now need to compare the valueObject with the keyText String
        // this is done using the type.valueToString
        String valueAsString;
        try {
            valueAsString = edmPrimitiveType.valueToString(valueObject, isNullable, maxLength, precision, scale, isUnicode);
        } catch (EdmPrimitiveTypeException e) {
            throw new ODataApplicationException("Failed to retrieve String value",
                                                HttpStatusCode.INTERNAL_SERVER_ERROR.getStatusCode(), Locale.ENGLISH, e);
        }

        if (valueAsString == null) {
            return false;
        }

        boolean matches = valueAsString.equals(keyText);
        if (!matches) {
            // if any of the key properties is not found in the entity, we don't need to search further
            return false;
        }
    }

    return true;
}