private Response Refresh(string graphName)
{
_semanticEngine = _kernel.Get <ISemanticLayer>("dotNetRDF");
_projectionEngine = _kernel.Get <IProjectionLayer>("rdf");
LoadDataObjectSet(graphName, null);
XDocument rdf = _projectionEngine.ToXml(graphName, ref _dataObjects);
return(_semanticEngine.Refresh(graphName, rdf));
}
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);
}
public Response Pull(string projectName, string applicationName, string graphName, Request request)
{
Status status = new Status();
status.Messages = new Messages();
try
{
status.Identifier = String.Format("{0}.{1}", projectName, applicationName);
InitializeScope(projectName, applicationName);
InitializeDataLayer();
DateTime startTime = DateTime.Now;
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;
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"];
if (!String.IsNullOrEmpty(proxyHost) && !String.IsNullOrEmpty(proxyPort))
{
WebProxy webProxy = new WebProxy(proxyHost, Int32.Parse(proxyPort));
WebProxyCredentials proxyCrendentials = _settings.GetWebProxyCredentials();
if (proxyCrendentials != null)
{
webProxy.Credentials = _settings.GetProxyCredential();
}
endpoint.SetProxyCredentials(proxyCrendentials.userName, proxyCrendentials.password, proxyCrendentials.domain);
endpoint.SetProxy(webProxy.Address);
}
String query = "CONSTRUCT {?s ?p ?o} WHERE {?s ?p ?o}";
VDS.RDF.IGraph graph = endpoint.QueryWithResultGraph(query);
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(graph, textWriter);
XDocument xDocument = XDocument.Parse(sb.ToString());
// call RdfProjectionEngine to fill data objects from a given graph
_projectionEngine = _kernel.Get <IProjectionLayer>("rdf");
_dataObjects = _projectionEngine.ToDataObjects(graphName, ref xDocument);
// post data objects to data layer
_dataLayer.Post(_dataObjects);
DateTime endTime = DateTime.Now;
TimeSpan duration = endTime.Subtract(startTime);
status.Messages.Add(string.Format("Graph [{0}] has been posted to legacy system successfully.", graphName));
status.Messages.Add(String.Format("Execution time [{0}:{1}.{2}] minutes.",
duration.Minutes, duration.Seconds, duration.Milliseconds));
}
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);
}
//Gets from datalayer and send it to another endpoint
public Response Push(string projectName, string applicationName, string graphName, PushRequest request)
{
Status status = new Status();
status.Messages = new Messages();
try
{
String targetUri = String.Empty;
String targetCredentialsXML = String.Empty;
String filter = String.Empty;
String projectNameForPush = String.Empty;
String applicationNameForPush = String.Empty;
String graphNameForPush = String.Empty;
String format = String.Empty;
targetUri = request["targetUri"];
targetCredentialsXML = request["targetCredentials"];
filter = request["filter"];
projectNameForPush = request["targetProjectName"];
applicationNameForPush = request["targetApplicationName"];
graphNameForPush = request["targetGraphName"];
format = request["format"];
WebHttpClient httpClient = new WebHttpClient(targetUri);
InitializeScope(projectName, applicationName);
InitializeDataLayer();
_graphMap = _mapping.FindGraphMap(graphName);
_projectionEngine = _kernel.Get <IProjectionLayer>(format);
IList <IDataObject> dataObjectList;
if (filter != String.Empty)
{
IList <string> identifiers = new List <string>();
identifiers.Add(filter);
dataObjectList = _dataLayer.Get(_graphMap.dataObjectName, identifiers);
}
else
{
dataObjectList = _dataLayer.Get(_graphMap.dataObjectName, null);
}
XDocument xDocument = _projectionEngine.ToXml(graphName, ref dataObjectList);
_isDataLayerInitialized = false;
_isScopeInitialized = false;
Response localResponse = httpClient.Post <XDocument, Response>(@"/" + projectNameForPush + "/" + applicationNameForPush + "/" + graphNameForPush + "?format=" + format, xDocument, true);
_response.Append(localResponse);
if (request.ExpectedResults != null)
{
foreach (Status responseStatus in localResponse.StatusList)
{
string dataObjectName = request.ExpectedResults.DataObjectName;
IList <IDataObject> dataObjects = _dataLayer.Get(
dataObjectName, new List <string> {
responseStatus.Identifier
});
foreach (var resultMap in request.ExpectedResults)
{
string propertyValue = responseStatus.Results[resultMap.Key];
string dataPropertyName = resultMap.Value;
dataObjects[0].SetPropertyValue(dataPropertyName, propertyValue);
}
_response.Append(_dataLayer.Post(dataObjects));
}
}
}
catch (Exception ex)
{
_logger.Error(string.Format("Error in pushing data", ex));
status.Level = StatusLevel.Error;
status.Messages.Add(string.Format("Error in pushing data: {0}", ex));
}
return(_response);
}
public Response PullDTO(string projectName, string applicationName, string graphName, Request request)
{
String targetUri = String.Empty;
String targetCredentialsXML = String.Empty;
String filter = String.Empty;
String projectNameForPull = String.Empty;
String applicationNameForPull = String.Empty;
String graphNameForPull = String.Empty;
String dataObjectsString = String.Empty;
Status status = new Status();
status.Messages = new Messages();
try
{
status.Identifier = String.Format("{0}.{1}", projectName, applicationName);
InitializeScope(projectName, applicationName);
InitializeDataLayer();
_projectionEngine = _kernel.Get <IProjectionLayer>("dto");
targetUri = request["targetUri"];
targetCredentialsXML = request["targetCredentials"];
graphNameForPull = request["targetGraphName"];
filter = request["filter"];
projectNameForPull = request["projectName"];
applicationNameForPull = request["applicationName"];
WebCredentials targetCredentials = Utility.Deserialize <WebCredentials>(targetCredentialsXML, true);
if (targetCredentials.isEncrypted)
{
targetCredentials.Decrypt();
}
WebHttpClient httpClient = new WebHttpClient(targetUri);
if (filter != String.Empty)
{
dataObjectsString = httpClient.GetMessage(@"/" + projectNameForPull + "/" + applicationNameForPull + "/" + graphNameForPull + "/" + filter + "?format=dto");
}
else
{
dataObjectsString = httpClient.GetMessage(@"/" + projectNameForPull + "/" + applicationNameForPull + "/" + graphNameForPull + "?format=dto");
}
XDocument xDocument = XDocument.Parse(dataObjectsString);
IList <IDataObject> dataObjects = _projectionEngine.ToDataObjects(graphName, ref xDocument);
_response.Append(_dataLayer.Post(dataObjects));
status.Messages.Add(String.Format("Pull is successful from " + targetUri + "for Graph " + graphName));
}
catch (Exception ex)
{
_logger.Error("Error in PullDTO: " + ex);
status.Level = StatusLevel.Error;
status.Messages.Add("Error while pulling " + graphName + " data from " + targetUri + " as " + targetUri + " data with filter " + filter + ".\r\n");
status.Messages.Add(ex.ToString());
}
_response.Append(status);
return(_response);
}