/// <summary>
/// Find the OSLC Creation Factory URL for a given OSLC resource type. If no resource type is given, returns
/// the default Creation Factory, if it exists.
/// </summary>
/// <param name="serviceProviderUrl"></param>
/// <param name="oslcDomain"></param>
/// <param name="oslcResourceType">the resource type of the desired query capability. This may differ from the OSLC artifact type.</param>
/// <returns>URL of requested Creation Factory or null if not found.</returns>
public string LookupCreationFactory(string serviceProviderUrl, string oslcDomain, string oslcResourceType)
{
CreationFactory defaultCreationFactory = null;
CreationFactory firstCreationFactory = null;
HttpResponseMessage response = GetResource(serviceProviderUrl, OSLCConstants.CT_RDF);
if (response.StatusCode != HttpStatusCode.OK)
{
throw new ResourceNotFoundException(serviceProviderUrl, "CreationFactory");
}
ServiceProvider serviceProvider = response.Content.ReadAsAsync <ServiceProvider>(formatters).Result;
if (serviceProvider != null)
{
foreach (Service service in serviceProvider.GetServices())
{
Uri domain = service.GetDomain();
if (domain != null && domain.ToString().Equals(oslcDomain))
{
CreationFactory[] creationFactories = service.GetCreationFactories();
if (creationFactories != null && creationFactories.Length > 0)
{
firstCreationFactory = creationFactories[0];
foreach (CreationFactory creationFactory in creationFactories)
{
foreach (Uri resourceType in creationFactory.GetResourceTypes())
{
//return as soon as domain + resource type are matched
if (resourceType.ToString() != null && resourceType.ToString().Equals(oslcResourceType))
{
return(creationFactory.GetCreation().ToString());
}
}
//Check if this is the default factory
foreach (Uri usage in creationFactory.GetUsages())
{
if (usage.ToString() != null && usage.ToString().Equals(OSLCConstants.USAGE_DEFAULT_URI))
{
defaultCreationFactory = creationFactory;
}
}
}
}
}
}
}
//If we reached this point, there was no resource type match
if (defaultCreationFactory != null)
{
//return default, if present
return(defaultCreationFactory.GetCreation().ToString());
}
else if (firstCreationFactory != null && firstCreationFactory.GetResourceTypes().Length == 0)
{
//return the first for the domain, if present
return(firstCreationFactory.GetCreation().ToString());
}
throw new ResourceNotFoundException(serviceProviderUrl, "CreationFactory");
}
/// <summary>
/// Register a ServiceProvider
/// </summary>
/// <param name="serviceProviderToRegister"></param>
/// <returns></returns>
public Uri registerServiceProvider(ServiceProvider serviceProviderToRegister)
{
Uri typeServiceProviderURI = new Uri(OslcConstants.TYPE_SERVICE_PROVIDER);
Uri oslcUsageDefault = new Uri(OslcConstants.OSLC_USAGE_DEFAULT);
ServiceProvider[] serviceProviders;
// We have to first get the ServiceProvider for ServiceProviders and then find the CreationFactory for a ServiceProvider
// We first try for a ServiceProviderCatalog
ServiceProviderCatalog serviceProviderCatalog = getServiceProviderCatalog();
if (serviceProviderCatalog != null)
{
serviceProviders = serviceProviderCatalog.GetServiceProviders();
}
else
{
// Secondly we try for a ServiceProvider which is acting as a ServiceProvider registry
ServiceProvider serviceProvider = GetServiceProvider();
if (serviceProvider != null)
{
serviceProviders = new ServiceProvider[] { serviceProvider };
}
else
{
throw new OslcCoreRegistrationException(serviceProviderToRegister,
(int)HttpStatusCode.NotFound,
"ServiceProviderCatalog");
}
}
if (serviceProviders != null)
{
CreationFactory firstCreationFactory = null;
CreationFactory firstDefaultCreationFactory = null;
for (int serviceProviderIndex = 0;
((serviceProviderIndex < serviceProviders.Length) &&
(firstDefaultCreationFactory == null));
serviceProviderIndex++)
{
ServiceProvider serviceProvider = serviceProviders[serviceProviderIndex];
Service[] services = serviceProvider.GetServices();
if (services != null)
{
for (int serviceIndex = 0;
((serviceIndex < services.Length) &&
(firstDefaultCreationFactory == null));
serviceIndex++)
{
Service service = services[serviceIndex];
CreationFactory[] creationFactories = service.GetCreationFactories();
if (creationFactories != null)
{
for (int creationFactoryIndex = 0;
((creationFactoryIndex < creationFactories.Length) &&
(firstDefaultCreationFactory == null));
creationFactoryIndex++)
{
CreationFactory creationFactory = creationFactories[creationFactoryIndex];
Uri[] resourceTypes = creationFactory.GetResourceTypes();
if (resourceTypes != null)
{
for (int resourceTypeIndex = 0;
((resourceTypeIndex < resourceTypes.Length) &&
(firstDefaultCreationFactory == null));
resourceTypeIndex++)
{
Uri resourceType = resourceTypes[resourceTypeIndex];
if (typeServiceProviderURI.Equals(resourceType))
{
if (firstCreationFactory == null)
{
firstCreationFactory = creationFactory;
}
Uri[] usages = creationFactory.GetUsages();
for (int usageIndex = 0;
((usageIndex < usages.Length) &&
(firstDefaultCreationFactory == null));
usageIndex++)
{
Uri usage = usages[usageIndex];
if (oslcUsageDefault.Equals(usage))
{
firstDefaultCreationFactory = creationFactory;
}
}
}
}
}
}
}
}
}
}
if (firstCreationFactory != null)
{
CreationFactory creationFactory = firstDefaultCreationFactory != null ? firstDefaultCreationFactory : firstCreationFactory;
Uri creation = creationFactory.GetCreation();
OslcRestClient oslcRestClient = new OslcRestClient(client.GetFormatters(),
creation);
HttpResponseMessage clientResponse = oslcRestClient.AddOslcResourceReturnClientResponse(serviceProviderToRegister);
HttpStatusCode statusCode = clientResponse.StatusCode;
if (statusCode != HttpStatusCode.Created)
{
throw new OslcCoreRegistrationException(serviceProviderToRegister,
(int)statusCode,
clientResponse.ReasonPhrase);
}
return(clientResponse.Headers.Location);
}
}
throw new OslcCoreRegistrationException(serviceProviderToRegister,
(int)HttpStatusCode.NotFound,
"CreationFactory");
}
