protected void ExecuteUpdate(string requestPath)
{
var updateExpression = File.ReadAllText(requestPath);
#if PORTABLE
var result = _service.ExecuteUpdate(_storeName, updateExpression);
#else
var result = _service.ExecuteUpdate(_storeName, updateExpression, true);
#endif
Assert.IsTrue(result.JobCompletedOk, "SPARQL Update failed for update from file path {0} : {1} : {2}", requestPath, result.StatusMessage, result.ExceptionInfo);
}
public SparqlUpdateModule(IBrightstarService brightstarService, AbstractStorePermissionsProvider permissionsProvider)
{
this.RequiresBrightstarStorePermission(permissionsProvider, get: StorePermissions.SparqlUpdate, post: StorePermissions.SparqlUpdate);
Get["/{storeName}/update"] = parameters =>
{
var requestObject = this.Bind <SparqlUpdateRequestObject>();
ViewBag.Title = requestObject.StoreName + " - SPARQL Update";
return
(Negotiate.WithAllowedMediaRange(Html)
.WithModel(requestObject)
.WithView("SparqlUpdate"));
};
Post["/{storeName}/update"] = parameters =>
{
var requestObject = this.Bind <SparqlUpdateRequestObject>();
ViewBag.Title = requestObject.StoreName + " - SPARQL Update";
if (SparqlRequest.Matches(Request.Headers.ContentType))
{
using (var reader = new StreamReader(Request.Body))
{
requestObject.Update = reader.ReadToEnd();
}
}
if (!parameters["storeName"].HasValue)
{
return(HttpStatusCode.BadRequest);
}
if (string.IsNullOrWhiteSpace(requestObject.Update))
{
return(HttpStatusCode.BadRequest);
}
IJobInfo jobInfo = brightstarService.ExecuteUpdate(parameters["storeName"], requestObject.Update, true);
if (jobInfo.JobCompletedOk)
{
return(jobInfo.MakeResponseObject(requestObject.StoreName));
}
return
(Negotiate.WithStatusCode(HttpStatusCode.BadRequest)
.WithModel(jobInfo.MakeResponseObject(requestObject.StoreName)));
};
}
public void TestDeleteFromGraph()
{
var storeName = CreateStore("TestDeleteFromGraph");
_client.ExecuteUpdate(storeName,
@"PREFIX foaf: <http://xmlns.com/foaf/0.1/>
INSERT DATA {
GRAPH <http://example/addresses> {
<http://example/william> a foaf:Person .
<http://example/william> foaf:givenName ""William"" .
<http://example/william> foaf:mbox <mailto:bill@example> .
<http://example/fred> a foaf:Person .
<http://example/fred> foaf:givenName ""Fred"" .
<http://example/fred> foaf:mbox <mailto:fred@example> .
}
}");
var results = _client.ExecuteQuery(storeName, "PREFIX foaf: <http://xmlns.com/foaf/0.1/> SELECT ?p FROM <http://example/addresses> WHERE { ?p a foaf:Person }");
var resultsDoc = XDocument.Load(results);
Assert.AreEqual(2, resultsDoc.SparqlResultRows().Count());
results = _client.ExecuteQuery(storeName,
"PREFIX foaf: <http://xmlns.com/foaf/0.1/> SELECT ?person ?property ?value FROM <http://example/addresses> WHERE { ?person ?property ?value ; foaf:givenName 'Fred' } ");
resultsDoc = XDocument.Load(results);
Assert.AreEqual(3, resultsDoc.SparqlResultRows().Count());
_client.ExecuteUpdate(storeName,
@"PREFIX foaf: <http://xmlns.com/foaf/0.1/>
WITH <http://example/addresses>
DELETE { ?person ?property ?value }
WHERE { ?person ?property ?value ; foaf:givenName 'Fred' } ");
results = _client.ExecuteQuery(storeName, "PREFIX foaf: <http://xmlns.com/foaf/0.1/> SELECT ?p FROM <http://example/addresses> WHERE { ?p a foaf:Person }");
resultsDoc = XDocument.Load(results);
Assert.AreEqual(1, resultsDoc.SparqlResultRows().Count());
var row = resultsDoc.SparqlResultRows().First();
Assert.AreEqual(new Uri("http://example/william"), row.GetColumnValue("p"));
}
public SparqlUpdateModule(IBrightstarService brightstarService, AbstractStorePermissionsProvider permissionsProvider)
{
this.RequiresBrightstarStorePermission(permissionsProvider, get:StorePermissions.SparqlUpdate, post:StorePermissions.SparqlUpdate);
Get["/{storeName}/update"] = parameters =>
{
var requestObject = this.Bind<SparqlUpdateRequestObject>();
ViewBag.Title = requestObject.StoreName + " - SPARQL Update";
return
Negotiate.WithAllowedMediaRange(Html)
.WithModel(requestObject)
.WithView("SparqlUpdate");
};
Post["/{storeName}/update"] = parameters =>
{
var requestObject = this.Bind<SparqlUpdateRequestObject>();
ViewBag.Title = requestObject.StoreName + " - SPARQL Update";
if (SparqlRequest.Matches(Request.Headers.ContentType))
{
using (var reader = new StreamReader(Request.Body))
{
requestObject.Update = reader.ReadToEnd();
}
}
if (!parameters["storeName"].HasValue) return HttpStatusCode.BadRequest;
if (string.IsNullOrWhiteSpace(requestObject.Update)) return HttpStatusCode.BadRequest;
IJobInfo jobInfo = brightstarService.ExecuteUpdate(parameters["storeName"], requestObject.Update, true);
if (jobInfo.JobCompletedOk)
{
return jobInfo.MakeResponseObject(requestObject.StoreName);
}
return
Negotiate.WithStatusCode(HttpStatusCode.BadRequest)
.WithModel(jobInfo.MakeResponseObject(requestObject.StoreName));
};
}
private void ExecuteUpdate(string storeName, string updateExpression)
{
IJobInfo jobInfo = _client.ExecuteUpdate(storeName, updateExpression);
TestHelper.AssertJobCompletesSuccessfully(_client, storeName, jobInfo);
}
public JobsModule(IBrightstarService brightstarService, AbstractStorePermissionsProvider permissionsProvider)
{
this.RequiresBrightstarStorePermissionData(permissionsProvider);
Get["/{storeName}/jobs"] = parameters =>
{
var jobsRequestObject = this.Bind<JobsRequestModel>();
ViewBag.Title = jobsRequestObject.StoreName + " - Jobs";
if (jobsRequestObject == null || jobsRequestObject.StoreName == null)
{
return HttpStatusCode.BadRequest;
}
if (jobsRequestObject.Take <= 0) jobsRequestObject.Take = DefaultPageSize;
var jobs = brightstarService.GetJobInfo(jobsRequestObject.StoreName, jobsRequestObject.Skip,
jobsRequestObject.Take + 1);
return Negotiate.WithPagedList(jobsRequestObject,
jobs.Select(j=>j.MakeResponseObject(jobsRequestObject.StoreName)),
jobsRequestObject.Skip, jobsRequestObject.Take, DefaultPageSize,
"jobs");
};
Get["/{storeName}/jobs/{jobId}"] = parameters =>
{
var request = this.Bind<JobRequestModel>();
if (request == null ||
request.StoreName == null ||
request.JobId == null)
{
return HttpStatusCode.BadRequest;
}
ViewBag.Title = request.StoreName + " - Job - " + request.JobId;
var job = brightstarService.GetJobInfo(request.StoreName, request.JobId);
if (job == null) return HttpStatusCode.NotFound;
var responseDto = job.MakeResponseObject(request.StoreName);
return responseDto;
};
Post["/{storeName}/jobs"] = parameters =>
{
var jobRequestObject = this.Bind<JobRequestObject>();
ViewBag.Title = jobRequestObject.StoreName + "- Jobs";
// Validate
if (jobRequestObject == null) return HttpStatusCode.BadRequest;
if (String.IsNullOrWhiteSpace(jobRequestObject.JobType)) return HttpStatusCode.BadRequest;
var storeName = parameters["storeName"];
var label = jobRequestObject.Label;
try
{
IJobInfo queuedJobInfo;
switch (jobRequestObject.JobType.ToLowerInvariant())
{
case "consolidate":
AssertPermission(StorePermissions.Admin);
queuedJobInfo = brightstarService.ConsolidateStore(storeName, label);
break;
case "createsnapshot":
AssertPermission(StorePermissions.Admin);
PersistenceType persistenceType;
// Validate TargetStoreName and PersistenceType parameters
if (!jobRequestObject.JobParameters.ContainsKey("TargetStoreName") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["TargetStoreName"]) ||
!jobRequestObject.JobParameters.ContainsKey("PersistenceType") ||
!Enum.TryParse(jobRequestObject.JobParameters["PersistenceType"],
out persistenceType))
{
return HttpStatusCode.BadRequest;
}
// Extract optional commit point parameter
ICommitPointInfo commitPoint = null;
if (jobRequestObject.JobParameters.ContainsKey("CommitId"))
{
ulong commitId;
if (!UInt64.TryParse(jobRequestObject.JobParameters["CommitId"], out commitId))
{
return HttpStatusCode.BadRequest;
}
commitPoint = brightstarService.GetCommitPoint(storeName, commitId);
if (commitPoint == null)
{
return HttpStatusCode.BadRequest;
}
}
// Execute
queuedJobInfo = brightstarService.CreateSnapshot(
storeName, jobRequestObject.JobParameters["TargetStoreName"],
persistenceType, commitPoint, label);
break;
case "export":
AssertPermission(StorePermissions.Export);
if (!jobRequestObject.JobParameters.ContainsKey("FileName") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["FileName"]))
{
return HttpStatusCode.BadRequest;
}
RdfFormat format = jobRequestObject.JobParameters.ContainsKey("Format")
? RdfFormat.GetResultsFormat(
jobRequestObject.JobParameters["Format"])
: RdfFormat.NQuads;
queuedJobInfo = brightstarService.StartExport(
storeName,
jobRequestObject.JobParameters["FileName"],
jobRequestObject.JobParameters.ContainsKey("GraphUri") ? jobRequestObject.JobParameters["GraphUri"] : null,
format,
label);
break;
case "import":
AssertPermission(StorePermissions.TransactionUpdate);
if (!jobRequestObject.JobParameters.ContainsKey("FileName") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["FileName"]))
{
return HttpStatusCode.BadRequest;
}
RdfFormat importFormat = null;
if (jobRequestObject.JobParameters.ContainsKey("ImportFormat"))
{
importFormat = RdfFormat.GetResultsFormat(jobRequestObject.JobParameters["ImportFormat"]);
if (importFormat == null) return HttpStatusCode.BadRequest;
}
queuedJobInfo = brightstarService.StartImport(
storeName,
jobRequestObject.JobParameters["FileName"],
jobRequestObject.JobParameters.ContainsKey("DefaultGraphUri") ? jobRequestObject.JobParameters["DefaultGraphUri"] : Constants.DefaultGraphUri,
label,
importFormat);
break;
case "repeattransaction":
AssertPermission(StorePermissions.Admin);
if (!jobRequestObject.JobParameters.ContainsKey("JobId") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["JobId"]))
{
return HttpStatusCode.BadRequest;
}
Guid jobId;
if (!Guid.TryParse(jobRequestObject.JobParameters["JobId"], out jobId))
{
return HttpStatusCode.BadRequest;
}
var transaction = brightstarService.GetTransaction(storeName, jobId);
if (transaction == null)
{
return HttpStatusCode.BadRequest;
}
queuedJobInfo = brightstarService.ReExecuteTransaction(storeName, transaction, label);
break;
case "sparqlupdate":
AssertPermission(StorePermissions.SparqlUpdate);
if (!jobRequestObject.JobParameters.ContainsKey("UpdateExpression") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["UpdateExpression"]))
{
return HttpStatusCode.BadRequest;
}
queuedJobInfo = brightstarService.ExecuteUpdate(
storeName,
jobRequestObject.JobParameters["UpdateExpression"],
false,
label);
break;
case "transaction":
AssertPermission(StorePermissions.TransactionUpdate);
var preconditions = jobRequestObject.JobParameters.ContainsKey("Preconditions")
? jobRequestObject.JobParameters["Preconditions"]
: null;
var nonexistence =
jobRequestObject.JobParameters.ContainsKey("NonexistencePreconditions")
? jobRequestObject.JobParameters["NonexistencePreconditions"]
: null;
var deletePatterns = jobRequestObject.JobParameters.ContainsKey("Deletes")
? jobRequestObject.JobParameters["Deletes"]
: null;
var insertTriples = jobRequestObject.JobParameters.ContainsKey("Inserts")
? jobRequestObject.JobParameters["Inserts"]
: null;
var defaultGraphUri =
jobRequestObject.JobParameters.ContainsKey("DefaultGraphUri") &&
!String.IsNullOrEmpty(jobRequestObject.JobParameters["DefaultGraphUri"])
? jobRequestObject.JobParameters["DefaultGraphUri"]
: null;
queuedJobInfo = brightstarService.ExecuteTransaction(
storeName, new UpdateTransactionData
{
ExistencePreconditions = preconditions,
NonexistencePreconditions = nonexistence,
DeletePatterns = deletePatterns,
InsertData = insertTriples,
DefaultGraphUri = defaultGraphUri
},
false,
label);
break;
case "updatestats":
AssertPermission(StorePermissions.Admin);
queuedJobInfo = brightstarService.UpdateStatistics(storeName, label);
break;
default:
return HttpStatusCode.BadRequest;
}
var jobUri = (string) storeName + "/jobs/" + queuedJobInfo.JobId;
return Negotiate.WithModel(new JobResponseModel
{
JobId = queuedJobInfo.JobId,
Label = queuedJobInfo.Label,
StatusMessage = queuedJobInfo.StatusMessage,
JobStatus = queuedJobInfo.GetJobStatusString(),
ExceptionInfo = queuedJobInfo.ExceptionInfo,
QueuedTime = queuedJobInfo.QueuedTime,
StartTime = queuedJobInfo.StartTime,
EndTime = queuedJobInfo.EndTime
})
.WithHeader("Location", jobUri)
.WithStatusCode(HttpStatusCode.Created);
}
catch (UnauthorizedAccessException)
{
return HttpStatusCode.Unauthorized;
}
};
}
public GraphsModule(IBrightstarService brightstarService,
AbstractStorePermissionsProvider storePermissionsProvider)
{
this.RequiresBrightstarStorePermission(storePermissionsProvider, get:StorePermissions.Read, put:StorePermissions.SparqlUpdate, post:StorePermissions.SparqlUpdate, delete:StorePermissions.SparqlUpdate);
Get["/{storeName}/graphs"] = parameters =>
{
if (!brightstarService.DoesStoreExist(parameters["storeName"])) return HttpStatusCode.NotFound;
Uri graphUri;
if (Request.Query["default"] == null && Request.Query["graph"] == null)
{
// Get with no default or graph parameter returns a list of graphs
// This is not part of the SPARQL 1.1 Graph Store protocol, but a useful extension
// The returned value is a SPARQL results set with a single variable named "graphUri"
// Acceptable media types are the supported SPARQL results set formats
return
Negotiate.WithModel(
new GraphListModel(brightstarService.ListNamedGraphs(parameters["storeName"])));
}
if (!TryGetGraphUri(out graphUri))
{
// Will get here if the value of the graph parameter is parsed as a relative URI
return HttpStatusCode.BadRequest;
}
try
{
// Return the serialized content of the graph
return SerializeGraph(brightstarService, parameters["storeName"], graphUri.ToString());
}
catch (BrightstarStoreNotModifiedException)
{
return HttpStatusCode.NotModified;
}
};
Put["/{storeName}/graphs"] = parameters =>
{
var storeParam = parameters["storeName"];
var store = storeParam.Value as string;
Uri graphUri;
if (!brightstarService.DoesStoreExist(store)) return HttpStatusCode.NotFound;
if (!TryGetGraphUri(out graphUri))
{
return HttpStatusCode.BadRequest;
}
var graphUriStr = graphUri.ToString();
bool isNewGraph = !graphUriStr.Equals(Constants.DefaultGraphUri) &&
!(brightstarService.ListNamedGraphs(store).Any(x => x.Equals(graphUriStr)));
try
{
var rdfFormat = GetRequestBodyFormat();
if (rdfFormat == null) return HttpStatusCode.NotAcceptable;
var rdfPayload = ParseBody(rdfFormat);
var sparqlUpdate = graphUri.ToString().Equals(Constants.DefaultGraphUri) ?
String.Format(UpdateDefaultGraph, rdfPayload) :
String.Format(UpdateNamedGraph, graphUri, rdfPayload);
var job = brightstarService.ExecuteUpdate(store, sparqlUpdate, true, "Update Graph " + graphUri);
return job.JobCompletedOk
? (isNewGraph ? HttpStatusCode.Created : HttpStatusCode.NoContent)
: HttpStatusCode.InternalServerError;
}
catch (RdfException)
{
return HttpStatusCode.BadRequest;
}
};
Post["/{storeName}/graphs"] = parameters =>
{
var storeParam = parameters["storeName"];
var store = storeParam.Value as string;
Uri graphUri;
if (!brightstarService.DoesStoreExist(store)) return HttpStatusCode.NotFound;
if (!TryGetGraphUri(out graphUri))
{
return HttpStatusCode.BadRequest;
}
var graphUriStr = graphUri.ToString();
var isNewGraph = !graphUriStr.Equals(Constants.DefaultGraphUri) &&
!(brightstarService.ListNamedGraphs(store).Any(x => x.Equals(graphUriStr)));
try
{
var rdfFormat = GetRequestBodyFormat();
if (rdfFormat == null) return HttpStatusCode.NotAcceptable;
var rdfPayload = ParseBody(rdfFormat);
var sparqlUpdate = graphUri.ToString().Equals(Constants.DefaultGraphUri) ?
String.Format(MergeDefaultGraph, rdfPayload) :
String.Format(MergeNamedGraph, graphUri, rdfPayload);
var job = brightstarService.ExecuteUpdate(store, sparqlUpdate, true, "Update Graph " + graphUri);
return job.JobCompletedOk
? (isNewGraph ? HttpStatusCode.Created : HttpStatusCode.NoContent)
: HttpStatusCode.InternalServerError;
}
catch (RdfException)
{
return HttpStatusCode.BadRequest;
}
};
Delete["{storeName}/graphs"] = parameters =>
{
Uri graphUri;
string sparqlUpdate, jobName;
var store = parameters["storeName"].Value as string;
if (!brightstarService.DoesStoreExist(store)) return HttpStatusCode.NotFound;
if (!TryGetGraphUri(out graphUri)) return HttpStatusCode.BadRequest;
if (graphUri.ToString().Equals(Constants.DefaultGraphUri))
{
// Clear the default graph
sparqlUpdate = DropDefaultGraph;
jobName = "Drop Default Graph";
}
else
{
var graphId = graphUri.ToString();
if (!brightstarService.ListNamedGraphs(store).Contains(graphId))
{
return HttpStatusCode.NotFound;
}
// Clear the named graph
sparqlUpdate = String.Format(DropNamedGraph, graphId);
jobName = "Drop Graph " + graphId;
}
var job = brightstarService.ExecuteUpdate(store, sparqlUpdate, true, jobName);
return job.JobCompletedOk
? HttpStatusCode.NoContent
: HttpStatusCode.InternalServerError;
};
}
public JobsModule(IBrightstarService brightstarService, AbstractStorePermissionsProvider permissionsProvider)
{
this.RequiresBrightstarStorePermissionData(permissionsProvider);
Get["/{storeName}/jobs"] = parameters =>
{
var jobsRequestObject = this.Bind <JobsRequestModel>();
if (jobsRequestObject == null || jobsRequestObject.StoreName == null)
{
return(HttpStatusCode.BadRequest);
}
if (jobsRequestObject.Take <= 0)
{
jobsRequestObject.Take = DefaultPageSize;
}
var jobs = brightstarService.GetJobInfo(jobsRequestObject.StoreName, jobsRequestObject.Skip,
jobsRequestObject.Take + 1);
return(Negotiate.WithPagedList(jobsRequestObject,
jobs.Select(j => j.MakeResponseObject(jobsRequestObject.StoreName)),
jobsRequestObject.Skip, jobsRequestObject.Take, DefaultPageSize,
"jobs"));
};
Get["/{storeName}/jobs/{jobId}"] = parameters =>
{
var request = this.Bind <JobRequestModel>();
if (request == null ||
request.StoreName == null ||
request.JobId == null)
{
return(HttpStatusCode.BadRequest);
}
var job = brightstarService.GetJobInfo(request.StoreName, request.JobId);
if (job == null)
{
return(HttpStatusCode.NotFound);
}
var responseDto = job.MakeResponseObject(request.StoreName);
return(responseDto);
};
Post["/{storeName}/jobs"] = parameters =>
{
var jobRequestObject = this.Bind <JobRequestObject>();
// Validate
if (jobRequestObject == null)
{
return(HttpStatusCode.BadRequest);
}
if (String.IsNullOrWhiteSpace(jobRequestObject.JobType))
{
return(HttpStatusCode.BadRequest);
}
var storeName = parameters["storeName"];
var label = jobRequestObject.Label;
try
{
IJobInfo queuedJobInfo;
switch (jobRequestObject.JobType.ToLowerInvariant())
{
case "consolidate":
AssertPermission(StorePermissions.Admin);
queuedJobInfo = brightstarService.ConsolidateStore(storeName, label);
break;
case "createsnapshot":
AssertPermission(StorePermissions.Admin);
PersistenceType persistenceType;
// Validate TargetStoreName and PersistenceType parameters
if (!jobRequestObject.JobParameters.ContainsKey("TargetStoreName") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["TargetStoreName"]) ||
!jobRequestObject.JobParameters.ContainsKey("PersistenceType") ||
!Enum.TryParse(jobRequestObject.JobParameters["PersistenceType"],
out persistenceType))
{
return(HttpStatusCode.BadRequest);
}
// Extract optional commit point parameter
ICommitPointInfo commitPoint = null;
if (jobRequestObject.JobParameters.ContainsKey("CommitId"))
{
ulong commitId;
if (!UInt64.TryParse(jobRequestObject.JobParameters["CommitId"], out commitId))
{
return(HttpStatusCode.BadRequest);
}
commitPoint = brightstarService.GetCommitPoint(storeName, commitId);
if (commitPoint == null)
{
return(HttpStatusCode.BadRequest);
}
}
// Execute
queuedJobInfo = brightstarService.CreateSnapshot(
storeName, jobRequestObject.JobParameters["TargetStoreName"],
persistenceType, commitPoint, label);
break;
case "export":
AssertPermission(StorePermissions.Export);
if (!jobRequestObject.JobParameters.ContainsKey("FileName") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["FileName"]))
{
return(HttpStatusCode.BadRequest);
}
RdfFormat format = jobRequestObject.JobParameters.ContainsKey("Format")
? RdfFormat.GetResultsFormat(
jobRequestObject.JobParameters["Format"])
: RdfFormat.NQuads;
queuedJobInfo = brightstarService.StartExport(
storeName,
jobRequestObject.JobParameters["FileName"],
jobRequestObject.JobParameters.ContainsKey("GraphUri") ? jobRequestObject.JobParameters["GraphUri"] : null,
format,
label);
break;
case "import":
AssertPermission(StorePermissions.TransactionUpdate);
if (!jobRequestObject.JobParameters.ContainsKey("FileName") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["FileName"]))
{
return(HttpStatusCode.BadRequest);
}
queuedJobInfo = brightstarService.StartImport(
storeName,
jobRequestObject.JobParameters["FileName"],
jobRequestObject.JobParameters.ContainsKey("DefaultGraphUri") ? jobRequestObject.JobParameters["DefaultGraphUri"] : Constants.DefaultGraphUri,
label);
break;
case "repeattransaction":
AssertPermission(StorePermissions.Admin);
if (!jobRequestObject.JobParameters.ContainsKey("JobId") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["JobId"]))
{
return(HttpStatusCode.BadRequest);
}
Guid jobId;
if (!Guid.TryParse(jobRequestObject.JobParameters["JobId"], out jobId))
{
return(HttpStatusCode.BadRequest);
}
var transaction = brightstarService.GetTransaction(storeName, jobId);
if (transaction == null)
{
return(HttpStatusCode.BadRequest);
}
queuedJobInfo = brightstarService.ReExecuteTransaction(storeName, transaction, label);
break;
case "sparqlupdate":
AssertPermission(StorePermissions.SparqlUpdate);
if (!jobRequestObject.JobParameters.ContainsKey("UpdateExpression") ||
String.IsNullOrWhiteSpace(jobRequestObject.JobParameters["UpdateExpression"]))
{
return(HttpStatusCode.BadRequest);
}
queuedJobInfo = brightstarService.ExecuteUpdate(
storeName,
jobRequestObject.JobParameters["UpdateExpression"],
false,
label);
break;
case "transaction":
AssertPermission(StorePermissions.TransactionUpdate);
var preconditions = jobRequestObject.JobParameters.ContainsKey("Preconditions")
? jobRequestObject.JobParameters["Preconditions"]
: null;
var nonexistence =
jobRequestObject.JobParameters.ContainsKey("NonexistencePreconditions")
? jobRequestObject.JobParameters["NonexistencePreconditions"]
: null;
var deletePatterns = jobRequestObject.JobParameters.ContainsKey("Deletes")
? jobRequestObject.JobParameters["Deletes"]
: null;
var insertTriples = jobRequestObject.JobParameters.ContainsKey("Inserts")
? jobRequestObject.JobParameters["Inserts"]
: null;
var defaultGraphUri =
jobRequestObject.JobParameters.ContainsKey("DefaultGraphUri") &&
!String.IsNullOrEmpty(jobRequestObject.JobParameters["DefaultGraphUri"])
? jobRequestObject.JobParameters["DefaultGraphUri"]
: null;
queuedJobInfo = brightstarService.ExecuteTransaction(
storeName, new UpdateTransactionData
{
ExistencePreconditions = preconditions,
NonexistencePreconditions = nonexistence,
DeletePatterns = deletePatterns,
InsertData = insertTriples,
DefaultGraphUri = defaultGraphUri
},
false,
label);
break;
case "updatestats":
AssertPermission(StorePermissions.Admin);
queuedJobInfo = brightstarService.UpdateStatistics(storeName, label);
break;
default:
return(HttpStatusCode.BadRequest);
}
var jobUri = (string)storeName + "/jobs/" + queuedJobInfo.JobId;
return(Negotiate.WithModel(new JobResponseModel
{
JobId = queuedJobInfo.JobId,
Label = queuedJobInfo.Label,
StatusMessage = queuedJobInfo.StatusMessage,
JobStatus = queuedJobInfo.GetJobStatusString(),
ExceptionInfo = queuedJobInfo.ExceptionInfo,
QueuedTime = queuedJobInfo.QueuedTime,
StartTime = queuedJobInfo.StartTime,
EndTime = queuedJobInfo.EndTime
})
.WithHeader("Location", jobUri)
.WithStatusCode(HttpStatusCode.Created));
}
catch (UnauthorizedAccessException)
{
return(HttpStatusCode.Unauthorized);
}
};
}
public GraphsModule(IBrightstarService brightstarService,
AbstractStorePermissionsProvider storePermissionsProvider)
{
this.RequiresBrightstarStorePermission(storePermissionsProvider, get: StorePermissions.Read, put: StorePermissions.SparqlUpdate, post: StorePermissions.SparqlUpdate, delete: StorePermissions.SparqlUpdate);
Get["/{storeName}/graphs"] = parameters =>
{
if (!brightstarService.DoesStoreExist(parameters["storeName"]))
{
return(HttpStatusCode.NotFound);
}
Uri graphUri;
if (Request.Query["default"] == null && Request.Query["graph"] == null)
{
// Get with no default or graph parameter returns a list of graphs
// This is not part of the SPARQL 1.1 Graph Store protocol, but a useful extension
// The returned value is a SPARQL results set with a single variable named "graphUri"
// Acceptable media types are the supported SPARQL results set formats
return
(Negotiate.WithModel(
new GraphListModel(brightstarService.ListNamedGraphs(parameters["storeName"]))));
}
if (!TryGetGraphUri(out graphUri))
{
// Will get here if the value of the graph parameter is parsed as a relative URI
return(HttpStatusCode.BadRequest);
}
try
{
// Return the serialized content of the graph
return(SerializeGraph(brightstarService, parameters["storeName"], graphUri.ToString()));
}
catch (BrightstarStoreNotModifiedException)
{
return(HttpStatusCode.NotModified);
}
};
Put["/{storeName}/graphs"] = parameters =>
{
var storeParam = parameters["storeName"];
var store = storeParam.Value as string;
Uri graphUri;
if (!brightstarService.DoesStoreExist(store))
{
return(HttpStatusCode.NotFound);
}
if (!TryGetGraphUri(out graphUri))
{
return(HttpStatusCode.BadRequest);
}
var graphUriStr = graphUri.ToString();
bool isNewGraph = !graphUriStr.Equals(Constants.DefaultGraphUri) &&
!(brightstarService.ListNamedGraphs(store).Any(x => x.Equals(graphUriStr)));
try
{
var rdfFormat = GetRequestBodyFormat();
if (rdfFormat == null)
{
return(HttpStatusCode.NotAcceptable);
}
var rdfPayload = ParseBody(rdfFormat);
var sparqlUpdate = graphUri.ToString().Equals(Constants.DefaultGraphUri) ?
String.Format(UpdateDefaultGraph, rdfPayload) :
String.Format(UpdateNamedGraph, graphUri, rdfPayload);
var job = brightstarService.ExecuteUpdate(store, sparqlUpdate, true, "Update Graph " + graphUri);
return(job.JobCompletedOk
? (isNewGraph ? HttpStatusCode.Created : HttpStatusCode.NoContent)
: HttpStatusCode.InternalServerError);
}
catch (RdfException)
{
return(HttpStatusCode.BadRequest);
}
};
Post["/{storeName}/graphs"] = parameters =>
{
var storeParam = parameters["storeName"];
var store = storeParam.Value as string;
Uri graphUri;
if (!brightstarService.DoesStoreExist(store))
{
return(HttpStatusCode.NotFound);
}
if (!TryGetGraphUri(out graphUri))
{
return(HttpStatusCode.BadRequest);
}
var graphUriStr = graphUri.ToString();
var isNewGraph = !graphUriStr.Equals(Constants.DefaultGraphUri) &&
!(brightstarService.ListNamedGraphs(store).Any(x => x.Equals(graphUriStr)));
try
{
var rdfFormat = GetRequestBodyFormat();
if (rdfFormat == null)
{
return(HttpStatusCode.NotAcceptable);
}
var rdfPayload = ParseBody(rdfFormat);
var sparqlUpdate = graphUri.ToString().Equals(Constants.DefaultGraphUri) ?
String.Format(MergeDefaultGraph, rdfPayload) :
String.Format(MergeNamedGraph, graphUri, rdfPayload);
var job = brightstarService.ExecuteUpdate(store, sparqlUpdate, true, "Update Graph " + graphUri);
return(job.JobCompletedOk
? (isNewGraph ? HttpStatusCode.Created : HttpStatusCode.NoContent)
: HttpStatusCode.InternalServerError);
}
catch (RdfException)
{
return(HttpStatusCode.BadRequest);
}
};
Delete["{storeName}/graphs"] = parameters =>
{
Uri graphUri;
string sparqlUpdate, jobName;
var store = parameters["storeName"].Value as string;
if (!brightstarService.DoesStoreExist(store))
{
return(HttpStatusCode.NotFound);
}
if (!TryGetGraphUri(out graphUri))
{
return(HttpStatusCode.BadRequest);
}
if (graphUri.ToString().Equals(Constants.DefaultGraphUri))
{
// Clear the default graph
sparqlUpdate = DropDefaultGraph;
jobName = "Drop Default Graph";
}
else
{
var graphId = graphUri.ToString();
if (!brightstarService.ListNamedGraphs(store).Contains(graphId))
{
return(HttpStatusCode.NotFound);
}
// Clear the named graph
sparqlUpdate = String.Format(DropNamedGraph, graphId);
jobName = "Drop Graph " + graphId;
}
var job = brightstarService.ExecuteUpdate(store, sparqlUpdate, true, jobName);
return(job.JobCompletedOk
? HttpStatusCode.NoContent
: HttpStatusCode.InternalServerError);
};
}