public Collection <ScopeProject> GetScopes()
{
Collection <ScopeProject> scopes = new Collection <ScopeProject>();
string relativeUri = "/scopes";
WebCredentials cred = new WebCredentials();
try
{
WebHttpClient webHttpClient = new WebHttpClient(adapterServiceUri, cred.GetNetworkCredential(), _proxyCredentials.GetWebProxy());
scopes = webHttpClient.Get <Collection <ScopeProject> >(relativeUri, true);
}
catch (Exception ex)
{ }
return(scopes);
}
public static string Update(string baseUri, string sparql, WebCredentials targetCredentials, WebProxyCredentials proxyCredentials)
{
try
{
string message = String.Empty;
string relativeUri = "?update=" + HttpUtility.UrlEncode(sparql);
WebHttpClient webClient = new WebHttpClient(baseUri, targetCredentials.GetNetworkCredential(), proxyCredentials.GetWebProxy());
message = webClient.GetMessage(relativeUri);
return(message);
}
catch (Exception exception)
{
_logger.Error("Error in Update: " + exception);
throw exception;
}
}
public static void PostQueryAsMultipartMessage(string baseUri, string sparql, WebCredentials targetCredentials, WebProxyCredentials proxyCredentials)
{
try
{
string result = string.Empty;
MultiPartMessage requestMessage = new MultiPartMessage
{
name = "update",
type = MultipartMessageType.FormData,
message = sparql,
};
List <MultiPartMessage> requestMessages = new List <MultiPartMessage>
{
requestMessage
};
WebHttpClient webClient = new WebHttpClient(baseUri, targetCredentials.GetNetworkCredential(), proxyCredentials.GetWebProxy());
string response = String.Empty;
webClient.PostMultipartMessage("", requestMessages, ref response);
}
catch (Exception exception)
{
_logger.Error("Error in PostQueryAsMultipartMessage: " + exception);
throw exception;
}
}
public static SPARQLResults Query(string baseUri, string sparql, WebCredentials targetCredentials, WebProxyCredentials proxyCredentials)
{
try
{
SPARQLResults sparqlResults = null;
string relativeUri = "?query=" + HttpUtility.UrlEncode(sparql);
WebHttpClient webClient = new WebHttpClient(baseUri, targetCredentials.GetNetworkCredential(), proxyCredentials.GetWebProxy());
sparqlResults = webClient.Get <SPARQLResults>(relativeUri, false);
return(sparqlResults);
}
catch (Exception exception)
{
_logger.Error("Error in Query: " + exception);
throw exception;
}
}
public Response Pull(string scope, string app, string graph, Request request)
{
Response response = new Response();
response.Level = StatusLevel.Success;
Status status = new Status();
status.Messages = new Messages();
try
{
status.Identifier = String.Format("{0}.{1}", scope, app);
InitializeScope(scope, app);
if (_settings["ReadOnlyDataLayer"] != null && _settings["ReadOnlyDataLayer"].ToString().ToLower() == "true")
{
string message = "Can not perform post on read-only data layer of [" + scope + "." + app + "].";
_logger.Error(message);
status.Level = StatusLevel.Error;
status.Messages.Add(message);
}
else
{
InitializeDataLayer();
DateTime startTime = DateTime.Now;
#region move this portion to dotNetRdfEngine?
if (!request.ContainsKey("targetEndpointUri"))
{
throw new Exception("Target Endpoint Uri is required");
}
string targetEndpointUri = request["targetEndpointUri"];
if (!request.ContainsKey("targetGraphBaseUri"))
{
throw new Exception("Target graph uri is required");
}
string targetGraphBaseUri = request["targetGraphBaseUri"];
_settings["TargetGraphBaseUri"] = targetGraphBaseUri;
if (targetGraphBaseUri.ToLower() == "[default graph]")
{
targetGraphBaseUri = String.Empty;
}
SparqlRemoteEndpoint endpoint = new SparqlRemoteEndpoint(new Uri(targetEndpointUri), targetGraphBaseUri);
if (request.ContainsKey("targetCredentials"))
{
string targetCredentialsXML = request["targetCredentials"];
WebCredentials targetCredentials = Utility.Deserialize <WebCredentials>(targetCredentialsXML, true);
if (targetCredentials.isEncrypted)
{
targetCredentials.Decrypt();
}
endpoint.SetCredentials(targetCredentials.GetNetworkCredential().UserName, targetCredentials.GetNetworkCredential().Password, targetCredentials.GetNetworkCredential().Domain);
}
string proxyHost = _settings["ProxyHost"];
string proxyPort = _settings["ProxyPort"];
string proxyCredsToken = _settings["ProxyCredentialToken"];
if (!String.IsNullOrEmpty(proxyHost) && !String.IsNullOrEmpty(proxyPort) && !String.IsNullOrEmpty(proxyCredsToken))
{
WebProxyCredentials proxyCreds = _settings.GetWebProxyCredentials();
endpoint.Proxy = proxyCreds.GetWebProxy() as WebProxy;
endpoint.ProxyCredentials = proxyCreds.GetNetworkCredential();
}
VDS.RDF.IGraph resultGraph = endpoint.QueryWithResultGraph("CONSTRUCT {?s ?p ?o} WHERE {?s ?p ?o}");
#endregion
if (resultGraph != null && resultGraph.Triples.Count > 0)
{
// call RdfProjectionEngine to fill data objects from a given graph
_projectionEngine = _kernel.Get <IProjectionLayer>("rdf");
System.Text.StringBuilder sb = new System.Text.StringBuilder();
TextWriter textWriter = new StringWriter(sb);
VDS.RDF.Writing.RdfXmlWriter rdfWriter = new VDS.RDF.Writing.RdfXmlWriter();
rdfWriter.Save(resultGraph, textWriter);
XDocument xDocument = XDocument.Parse(sb.ToString());
if (xDocument != null && xDocument.Root != null)
{
_logger.Debug(xDocument.Root.ToString());
_dataObjects = _projectionEngine.ToDataObjects(graph, ref xDocument);
if (_dataObjects != null && _dataObjects.Count > 0)
{
status.Messages.Add("Query target endpoint completed successfully.");
status.Messages.Add(String.Format("Number of data objects created [{0}].", _dataObjects.Count));
// post data objects to data layer
response.Append(_dataLayer.Post(_dataObjects));
DateTime endTime = DateTime.Now;
TimeSpan duration = endTime.Subtract(startTime);
status.Messages.Add(String.Format("Execution time [{0}:{1}.{2}] minutes.",
duration.Minutes, duration.Seconds, duration.Milliseconds));
}
else
{
status.Messages.Add(string.Format("No data objects being created."));
}
}
else
{
throw new Exception("Facade document is empty.");
}
}
else
{
throw new Exception("Facade graph is empty.");
}
}
}
catch (Exception ex)
{
_logger.Error("Error in Pull(): ", ex);
status.Level = StatusLevel.Error;
status.Messages.Add(string.Format("Error pulling graph: {0}", ex));
}
response.Append(status);
return(response);
}