private IStorageProvider GetStorageProvider(string storeName)
{
if (_storageProviders.ContainsKey(storeName))
{
return(_storageProviders[storeName]);
}
if (_configurationGraph != null)
{
var obj = DotNetRdfConfigurationHelper.GetConfigurationObject(_configurationGraph, storeName);
if (obj == null)
{
throw new BrightstarClientException(String.Format(Strings.BrightstarServiceClient_StoreDoesNotExist, storeName));
}
if (!(obj is IStorageProvider))
{
throw new BrightstarClientException(Strings.DotNetRdf_NotAStorageProvider);
}
_storageProviders[storeName] = obj as IStorageProvider;
return(obj as IStorageProvider);
}
return(null);
}
///<summary>
/// Creates a data object context from a connection string
///</summary>
///<param name="connectionString">The <see cref="ConnectionString"/> that specifies how to connect to a Brightstar server.</param>
///<returns>The new data object context</returns>
public static IDataObjectContext GetDataObjectContext(ConnectionString connectionString)
{
switch (connectionString.Type)
{
case ConnectionType.Embedded:
return(new EmbeddedDataObjectContext(connectionString));
#if !WINDOWS_PHONE
case ConnectionType.Rest:
return(new RestDataObjectContext(connectionString));
#endif
case ConnectionType.DotNetRdf:
var configurationGraph = DotNetRdfConfigurationHelper.LoadConfiguration(connectionString.Configuration);
bool optimisticLocking = connectionString.OptimisticLocking;
if (String.IsNullOrEmpty(connectionString.DnrStorageServer))
{
return(new DotNetRdfStorageProvidersDataObjectContext(configurationGraph, optimisticLocking));
}
var storageServer = DotNetRdfConfigurationHelper.GetConfigurationObject(
configurationGraph, connectionString.DnrStorageServer) as IStorageServer;
if (storageServer == null)
{
throw new BrightstarClientException("Unable to retrieve a DotNetRDF storage server from the provided configuration.");
}
return(new DotNetRdfStorageServerDataObjectContext(storageServer, optimisticLocking));
case ConnectionType.Sparql:
return(MakeSparqlDataObjectContext(connectionString));
default:
throw new BrightstarClientException("Unable to create valid context with connection string " +
connectionString.Value +
". Cause: unrecognised connection string type: " +
connectionString.Type);
}
}