public async Task <ApiActionResult> Execute(string id, JObject jObj, string schemaId, string locationPattern)
{
// 1. Check parameters.
if (string.IsNullOrWhiteSpace(id))
{
throw new ArgumentNullException(nameof(id));
}
if (jObj == null)
{
throw new ArgumentNullException(nameof(jObj));
}
if (string.IsNullOrWhiteSpace(schemaId))
{
throw new ArgumentNullException(nameof(schemaId));
}
_parametersValidator.ValidateLocationPattern(locationPattern);
// 2. Check representation exists
var representation = await _representationStore.GetRepresentation(id);
if (representation == null)
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.NotFound,
string.Format(ErrorMessages.TheResourceDoesntExist, id)));
}
// 3. Get patch operations.
ErrorResponse errorResponse;
var operations = _patchRequestParser.Parse(jObj, out errorResponse);
if (operations == null)
{
return(_apiResponseFactory.CreateError(
(HttpStatusCode)errorResponse.Status,
errorResponse));
}
// 4. Process operations.
foreach (var operation in operations)
{
// 4.1 Check path is filled-in.
if (operation.Type == PatchOperations.remove &&
string.IsNullOrWhiteSpace(operation.Path))
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(ErrorMessages.ThePathNeedsToBeSpecified, HttpStatusCode.BadRequest, Common.Constants.ScimTypeValues.InvalidSyntax)));
}
// 4.2 Check value is filled-in.
if ((operation.Type == PatchOperations.add || operation.Type == PatchOperations.replace) &&
operation.Value == null)
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(ErrorMessages.TheValueNeedsToBeSpecified, HttpStatusCode.BadRequest, Common.Constants.ScimTypeValues.InvalidSyntax)));
}
// 4.3 Process filter & get values.
IEnumerable <RepresentationAttribute> attrs = null;
IEnumerable <RepresentationAttribute> filteredAttrs = null;
if (!string.IsNullOrWhiteSpace(operation.Path))
{
// 4.3.1 Process filter.
var filter = _filterParser.Parse(operation.Path);
var filtered = filter.Evaluate(representation);
if (filtered == null || !filtered.Any())
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(ErrorMessages.TheFilterIsNotCorrect, HttpStatusCode.BadRequest, Common.Constants.ScimTypeValues.InvalidFilter)
));
}
// 4.3.2 Get targeted attributes.
var target = _filterParser.GetTarget(operation.Path);
var filterRepresentation = _filterParser.Parse(target);
attrs = filterRepresentation.Evaluate(representation);
if (operation.Type == PatchOperations.remove)
{
// 4.3.3 If operation = remove then values are not retrieved.
filteredAttrs = filtered;
}
else
{
// 4.3.4 if operation = replace or add then retrieve values.
var name = filtered.First().SchemaAttribute.Name;
var token = operation.Value.SelectToken(name);
if (token == null)
{
token = new JObject();
token[name] = operation.Value;
}
var value = _jsonParser.GetRepresentation(token, filtered.First().SchemaAttribute, CheckStrategies.Standard);
if (!value.IsParsed)
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(value.ErrorMessage, HttpStatusCode.BadRequest, Common.Constants.ScimTypeValues.InvalidSyntax)));
}
filteredAttrs = new[] { value.RepresentationAttribute };
}
}
// 4.4 If there's no filter then parse the value with the schema.
if (filteredAttrs == null)
{
if (operation.Value != null)
{
var repr = await _representationRequestParser.Parse(operation.Value, schemaId, CheckStrategies.Standard);
if (!repr.IsParsed)
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(repr.ErrorMessage, HttpStatusCode.BadRequest, Common.Constants.ScimTypeValues.InvalidSyntax)));
}
filteredAttrs = repr.Representation.Attributes;
attrs = representation.Attributes;
}
}
foreach (var filteredAttr in filteredAttrs)
{
var attr = attrs.FirstOrDefault(a => a.SchemaAttribute.Name == filteredAttr.SchemaAttribute.Name);
// 4.5.1 Check mutability.
if (filteredAttr.SchemaAttribute.Mutability == Common.Constants.SchemaAttributeMutability.Immutable ||
filteredAttr.SchemaAttribute.Mutability == Common.Constants.SchemaAttributeMutability.ReadOnly)
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(string.Format(ErrorMessages.TheImmutableAttributeCannotBeUpdated, filteredAttr.SchemaAttribute.Name), HttpStatusCode.BadRequest, Common.Constants.ScimTypeValues.Mutability)));
}
// 4.5.2 Check uniqueness
if (filteredAttr.SchemaAttribute.Uniqueness == Common.Constants.SchemaAttributeUniqueness.Server) // TH : SELECT THE VALUE AND CHECK THE UNIQUENESS.
{
var filter = _filterParser.Parse(filteredAttr.FullPath);
var uniqueAttrs = await _representationStore.SearchValues(representation.ResourceType, filter);
if (uniqueAttrs.Any())
{
if (uniqueAttrs.Any(a => a.CompareTo(filteredAttr) == 0))
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(string.Format(ErrorMessages.TheAttributeMustBeUnique, filteredAttr.SchemaAttribute.Name), HttpStatusCode.BadRequest, Common.Constants.ScimTypeValues.Uniqueness)));
}
}
}
switch (operation.Type)
{
// 4.5.3.1 Remove attributes.
case PatchOperations.remove:
if (attr == null)
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(string.Format(ErrorMessages.TheAttributeDoesntExist, filteredAttr.SchemaAttribute.Name), HttpStatusCode.BadRequest)
));
}
if (filteredAttr.SchemaAttribute.MultiValued)
{
// 4.5.3.1.1 Remove attribute from array
if (!Remove(attr, filteredAttr))
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(ErrorMessages.TheRepresentationCannotBeRemoved, HttpStatusCode.BadRequest)
));
}
}
else
{
// 4.5.3.1.2 Remove attribute from complex representation.
if (attr.Parent != null)
{
var complexParent = attr.Parent as ComplexRepresentationAttribute;
if (complexParent == null)
{
continue;
}
complexParent.Values = complexParent.Values.Where(v => !v.Equals(attr));
}
else
{
representation.Attributes = representation.Attributes.Where(v => !v.Equals(attr));
}
}
break;
// 4.5.3.2 Add attribute.
case PatchOperations.add:
if (string.IsNullOrWhiteSpace(operation.Path) && attr == null)
{
representation.Attributes = representation.Attributes.Concat(new[] { filteredAttr });
continue;
}
if (attr == null)
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(string.Format(ErrorMessages.TheAttributeDoesntExist, filteredAttr.SchemaAttribute.Name), HttpStatusCode.BadRequest)
));
}
if (!filteredAttr.SchemaAttribute.MultiValued)
{
if (!Set(attr, filteredAttr))
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(ErrorMessages.TheRepresentationCannotBeSet, HttpStatusCode.BadRequest)
));
}
}
else
{
if (!Add(attr, filteredAttr))
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(ErrorMessages.TheRepresentationCannotBeAdded, HttpStatusCode.BadRequest)
));
}
}
break;
// 4.5.3.3 Replace attribute
case PatchOperations.replace:
if (attr == null)
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(string.Format(ErrorMessages.TheAttributeDoesntExist, filteredAttr.SchemaAttribute.Name), HttpStatusCode.BadRequest)
));
}
if (attr.SchemaAttribute.MultiValued)
{
if (!SetEnum(attr, filteredAttr))
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(ErrorMessages.TheRepresentationCannotBeSet, HttpStatusCode.BadRequest)
));
}
}
else
{
if (!Set(attr, filteredAttr))
{
return(_apiResponseFactory.CreateError(
HttpStatusCode.BadRequest,
_errorResponseFactory.CreateError(ErrorMessages.TheRepresentationCannotBeSet, HttpStatusCode.BadRequest)
));
}
}
break;
}
}
}
// 5. Save the representation.
representation.Version = Guid.NewGuid().ToString();
await _representationStore.UpdateRepresentation(representation);
// 6. Returns the JSON representation.
var response = await _responseParser.Parse(representation, locationPattern.Replace("{id}", id), schemaId, OperationTypes.Modification);
return(_apiResponseFactory.CreateResultWithContent(HttpStatusCode.OK,
response.Object,
response.Location,
representation.Version,
representation.Id));
}
private async Task <UpdateResponse> UpdateAttribute(RepresentationAttribute source, RepresentationAttribute target, string resourceType)
{
var result = new UpdateResponse();
var complexSource = source as ComplexRepresentationAttribute;
var complexTarget = target as ComplexRepresentationAttribute;
if (complexTarget != null)
{
var schemaAttribute = complexTarget.SchemaAttribute;
if (schemaAttribute.MultiValued)
{
// Check mutability
if (schemaAttribute.Mutability == Common.Constants.SchemaAttributeMutability.Immutable)
{
if (complexTarget.CompareTo(complexSource) != 0)
{
result.SetError(_errorResponseFactory.CreateError(string.Format(ErrorMessages.TheImmutableAttributeCannotBeUpdated, schemaAttribute.Name),
HttpStatusCode.BadRequest,
Common.Constants.ScimTypeValues.Mutability));
return(result);
}
}
// Check uniqueness
if (schemaAttribute.Uniqueness == Common.Constants.SchemaAttributeUniqueness.Server)
{
var filter = _filterParser.Parse(complexTarget.FullPath);
var uniqueAttrs = await _representationStore.SearchValues(resourceType, filter);
if (uniqueAttrs.Any())
{
if (uniqueAttrs.Any(a => a.CompareTo(complexTarget) == 0))
{
result.SetError(_errorResponseFactory.CreateError(
string.Format(ErrorMessages.TheAttributeMustBeUnique, complexTarget.SchemaAttribute.Name),
HttpStatusCode.BadRequest,
Common.Constants.ScimTypeValues.Uniqueness));
return(result);
}
}
}
}
complexSource.Values = complexTarget.Values;
return(result);
}
// Check mutability
if (target.SchemaAttribute.Mutability == Common.Constants.SchemaAttributeMutability.Immutable)
{
if (source.CompareTo(target) != 0)
{
result.SetError(_errorResponseFactory.CreateError(string.Format(ErrorMessages.TheImmutableAttributeCannotBeUpdated, target.SchemaAttribute.Name),
HttpStatusCode.BadRequest,
Common.Constants.ScimTypeValues.Mutability));
return(result);
}
}
// Check uniqueness
if (target.SchemaAttribute.Uniqueness == Common.Constants.SchemaAttributeUniqueness.Server)
{
var filter = _filterParser.Parse(target.FullPath);
var uniqueAttrs = await _representationStore.SearchValues(resourceType, filter);
if (uniqueAttrs.Any())
{
if (uniqueAttrs.Any(a => a.CompareTo(target) == 0))
{
result.SetError(_errorResponseFactory.CreateError(
string.Format(ErrorMessages.TheAttributeMustBeUnique, target.SchemaAttribute.Name),
HttpStatusCode.BadRequest,
Common.Constants.ScimTypeValues.Uniqueness));
return(result);
}
}
}
// Assign the values
AssignValues(source, target);
return(result);
}