C# StoreWorker.ProcessTransaction方法代码示例

        public void TestTransaction()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            JobExecutionStatus status = storeWorker.GetJobStatus(jobId.ToString());
            while (status.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                status = storeWorker.GetJobStatus(jobId.ToString());
            }            
        }

        public void TestDeletingTransactionHeadersDisablesLogging()
        {
            // create a store
            var sid = CreateStore(withTransactionLog: true);
            var txnHeadersFile = Path.Combine(Configuration.StoreLocation, sid, "transactionheaders.bs");
            var txnLogFile = Path.Combine(Configuration.StoreLocation, sid, "transactions.bs");

            // Creating the store should create the files
            Assert.IsTrue(File.Exists(txnHeadersFile), "Expected transactionheaders.bs file to be created when store is initially created");
            Assert.IsTrue(File.Exists(txnLogFile), "Expected transactions.bs file to be created when store is initially created");

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();


            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";
            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            AssertJobCompletedOk(storeWorker, jobId);

            long logLength;
            using (var txnStream = File.OpenRead(txnLogFile))
            {
                logLength = txnStream.Length;
                Assert.Greater(logLength, 0L);
            }

            // Remove the transaction headers file
            File.Delete(txnHeadersFile);

            // Execute a second transaction
            const string data2 = @"<http://www.networkedplanet.com/people/kal> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";
            jobId = storeWorker.ProcessTransaction("", "", "", data2, Constants.DefaultGraphUri, "nt");
            AssertJobCompletedOk(storeWorker, jobId);

            Assert.IsFalse(File.Exists(txnHeadersFile), "Did not expect transactionheaders.bs to reappear after second transaction");
            Assert.IsTrue(File.Exists(txnLogFile), "Expected transactions.bs file to remain untouched after second transaction");
            using (var txnStream = File.OpenRead(txnLogFile))
            {
                Assert.AreEqual(logLength, txnStream.Length, "Expected transaction log file to be unchanged in size by second transaction");
            }
        }

        public void TestTouchingTransactionHeadersEnablesLogging()
        {
            // create a store with logging disabled
            var sid = CreateStore(withTransactionLog: false);
            var txnHeadersFile = Path.Combine(Configuration.StoreLocation, sid, "transactionheaders.bs");
            var txnLogFile = Path.Combine(Configuration.StoreLocation, sid, "transactions.bs");

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // Should be no transaction files because we created the store with logging disabled
            Assert.IsFalse(File.Exists(txnHeadersFile));
            Assert.IsFalse(File.Exists(txnLogFile));

            // But now "touch" the header file to create it
            File.Create(txnHeadersFile).Close();

            // execute a transaction that logs data
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";
            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            AssertJobCompletedOk(storeWorker, jobId);

            // Transaction files should now both be there
            Assert.IsTrue(File.Exists(txnHeadersFile));
            Assert.IsTrue(File.Exists(txnLogFile));

            // There should also be some content in both files
            using (var txnStream = File.OpenRead(txnHeadersFile))
            {
                Assert.Greater(txnStream.Length, 0L);
            }
            using (var txnStream = File.OpenRead(txnLogFile))
            {
                Assert.Greater(txnStream.Length, 0L);
            }
        }

        public void TestNoTransactionLogWhenLoggingDisabled()
        {
            // create a store
            var sid = CreateStore(withTransactionLog:false);

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            Assert.IsFalse(File.Exists(Path.Combine(Configuration.StoreLocation, sid, "transactionheaders.bs")));
            Assert.IsFalse(File.Exists(Path.Combine(Configuration.StoreLocation, sid, "transactions.bs")));

            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            var jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            Assert.IsFalse(File.Exists(Path.Combine(Configuration.StoreLocation, sid, "transactionheaders.bs")));
            Assert.IsFalse(File.Exists(Path.Combine(Configuration.StoreLocation, sid, "transactions.bs")));

        }

        public void TestTransactionLogCreatedWhenLoggingEnabled()
        {
            // create a store
            var sid = CreateStore(withTransactionLog: true);
            var txnHeadersFile = Path.Combine(Configuration.StoreLocation, sid, "transactionheaders.bs");
            var txnLogFile = Path.Combine(Configuration.StoreLocation, sid, "transactions.bs");

            // Creating the store should create the files
            Assert.IsTrue(File.Exists(txnHeadersFile), "Expected transactionheaders.bs file to be created when store is initially created");
            Assert.IsTrue(File.Exists(txnLogFile), "Expected transactions.bs file to be created when store is initially created");

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();


            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            // Transaction files should still be there
            Assert.IsTrue(File.Exists(txnHeadersFile));
            Assert.IsTrue(File.Exists(txnLogFile));

            // There should also be some content in both files
            using (var txnStream = File.OpenRead(txnHeadersFile))
            {
                Assert.Greater(txnStream.Length, 0L);
            }
            using (var txnStream = File.OpenRead(txnLogFile))
            {
                Assert.Greater(txnStream.Length, 0L);
            }
        }

        public void TestQueryCaching()
        {
            Configuration.EnableQueryCache = true;

            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk && jobStatus.JobStatus != JobStatus.TransactionError)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }
            Assert.AreEqual(JobStatus.CompletedOk, jobStatus.JobStatus, "Import failed: {0} : {1}", jobStatus.Information, jobStatus.ExceptionDetail);

            var sw = new Stopwatch();
            sw.Start();
            var queryResult = storeWorker.Query("select * where { ?a ?b ?c }", SparqlResultsFormat.Xml, new[] { Constants.DefaultGraphUri });
            sw.Stop();
            Console.WriteLine("initial query took : " + sw.ElapsedMilliseconds);
            var initTime = sw.ElapsedMilliseconds;

            sw = new Stopwatch();
            sw.Start();
            var cachedResult = storeWorker.Query("select * where { ?a ?b ?c }", SparqlResultsFormat.Xml, new[] { Constants.DefaultGraphUri });
            sw.Stop();
            Console.WriteLine("warm query took : " + sw.ElapsedMilliseconds);

            Thread.Sleep(1000);

            sw = new Stopwatch();
            sw.Start();
            cachedResult = storeWorker.Query("select * where { ?a ?b ?c }", SparqlResultsFormat.Xml, new[] { Constants.DefaultGraphUri });
            sw.Stop();
            Console.WriteLine("cached query took : " + sw.ElapsedMilliseconds);
            var cachedTime = sw.ElapsedMilliseconds;

            Assert.AreEqual(queryResult, cachedResult);
            if (cachedTime >= initTime)
            {
                Assert.Inconclusive(
                    "Expected time to read from cache ({0}ms) to be less than time to execute query ({1}ms).",
                    cachedTime, initTime);
            }

            Configuration.EnableQueryCache = false;
        }

        public void TestConsolidateStore()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            var data =
                @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction("","", "", data, Constants.DefaultGraphUri, "nt");
            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            jobId = Guid.NewGuid();
            storeWorker.QueueJob(new ConsolidateJob(jobId, null, storeWorker));
            jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk && jobStatus.JobStatus != JobStatus.TransactionError)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            Assert.AreEqual(JobStatus.CompletedOk, jobStatus.JobStatus);

            // open store and find all triples
            var results = storeWorker.Query("select * where { ?a ?b ?c }", SparqlResultsFormat.Xml, new[] { Constants.DefaultGraphUri });
            var doc = XDocument.Parse(results);
            XNamespace sparqlNs = "http://www.w3.org/2005/sparql-results#";
            Assert.AreEqual(1, doc.Descendants(sparqlNs + "result").Count());

            data =
                @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            jobId = storeWorker.ProcessTransaction("", "", data, "", Constants.DefaultGraphUri, "nt");
            jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            Assert.AreEqual(JobStatus.CompletedOk, jobStatus.JobStatus);

            // consolidate again
            jobId = Guid.NewGuid();
            storeWorker.QueueJob(new ConsolidateJob(jobId, null, storeWorker));
            jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk && jobStatus.JobStatus != JobStatus.TransactionError)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            Assert.AreEqual(JobStatus.CompletedOk, jobStatus.JobStatus);

            results = storeWorker.Query("select * where { ?a ?b ?c }", SparqlResultsFormat.Xml, new[] { Constants.DefaultGraphUri });
            doc = XDocument.Parse(results);
            Assert.AreEqual(0, doc.Descendants(sparqlNs + "result").Count());
        }

        public void TestDeleteStoreAfterUpdate()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            // var queryResult = storeWorker.Query("select * where { ?s ?p ?o }");
            storeWorker.Shutdown(true, () => _storeManager.DeleteStore(Configuration.StoreLocation +"\\" + sid));
            
        }

        public void TestGetErrorMessage()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");

            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.TransactionError)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            Assert.IsTrue(jobStatus.Information.Contains("Job Error"), "Unexpected job message: '{0}'", jobStatus.Information);
            Assert.IsTrue(jobStatus.ExceptionDetail.Message.Contains("Syntax error in triples to add."), "Unexpected job message: '{0}'", jobStatus.ExceptionDetail.Message);
        }

        public void TestFailedTransactionAppearsInTransactionList()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transaction with bad data
            var data =
                @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk && jobStatus.JobStatus != JobStatus.TransactionError)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            var transactionLog = storeWorker.TransactionLog;
            var transactionList = transactionLog.GetTransactionList();

            var i = 0;
            while (transactionList.MoveNext())
            {
                i++;
            }

            Assert.AreEqual(1, i);

            var txnList = storeWorker.TransactionLog.GetTransactionList();
            txnList.MoveNext();
            var tinfo = txnList.Current;
            Assert.IsNotNull(tinfo);
            Assert.AreEqual(TransactionType.GuardedUpdateTransaction, tinfo.TransactionType);
            Assert.AreEqual(TransactionStatus.Failed, tinfo.TransactionStatus);

            data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";
            jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");

            jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            transactionList.Reset();

            i = 0;
            while (transactionList.MoveNext())
            {
                i++;
            }

            Assert.AreEqual(2, i);
        }

        public void TestRecoverTransactionData()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");

            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            var transactionLog = storeWorker.TransactionLog;
            var transactionList = transactionLog.GetTransactionList();

            var i = 0;
            while (transactionList.MoveNext())
            {
                i++;
            }

            Assert.AreEqual(1, i);

            // now get txn data
            var txnList = storeWorker.TransactionLog.GetTransactionList();
            txnList.MoveNext();
            var tinfo = txnList.Current;
            Assert.IsNotNull(tinfo);
            Assert.AreEqual(TransactionType.GuardedUpdateTransaction, tinfo.TransactionType);
            Assert.AreEqual(TransactionStatus.CompletedOk, tinfo.TransactionStatus);
            Assert.IsTrue(tinfo.TransactionStartTime < DateTime.UtcNow);

            var job = new GuardedUpdateTransaction(Guid.NewGuid(), null, storeWorker);
            using (var tdStream = storeWorker.TransactionLog.GetTransactionData(tinfo.DataStartPosition))
            {
                job.ReadTransactionDataFromStream(tdStream);
            }
            Assert.IsNotNull(job);
            Assert.AreEqual(data, job.InsertData);
            
        }

        public void TestReadTransactionList()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            var data =
                @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction("","", "", data, Constants.DefaultGraphUri, "nt");

            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }            

            var transactionLog = storeWorker.TransactionLog;
            var transactionList = transactionLog.GetTransactionList();

            var i = 0;
            while (transactionList.MoveNext())
            {
                i++;
            }

            Assert.AreEqual(1, i);

            data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";
            jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");

            jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }            

            transactionList.Reset();

            i = 0;
            while (transactionList.MoveNext())
            {
                i++;
            }

            Assert.AreEqual(2, i);
        }

        public void TestTransactionWithNonExistsancePreconditionFails()
        {
            var storeId = CreateStore();
            var storeWorker = new StoreWorker(Configuration.StoreLocation, storeId);
            storeWorker.Start();
            const string data =
                @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np> .\n
                  <http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/core/version> ""1""^^<http://www.w3.org/2000/01/rdf-schema#integer> .";

            const string notExistsPrecondition =
                @"<http://www.networkedplanet.com/people/gra> <" + Constants.WildcardUri + "> <" + Constants.WildcardUri + ">.";
            const string insertData =
                @"<http://www.networkedplanet.com/people/kal> <http://www.newtorkedplanet.com/types/worksfor> <http://wwww.networkedplanet.com/companies/np> .\n
                  <http://www.networkedplanet.com/people/kal> <http://www.networkedplanet.com/core/version> ""1""^^<http://wwww.w3.org/2000/01/rdf-schema#integer> .";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt", "UpdateTransaction");
            AssertJobCompleted(storeWorker, jobId, JobStatus.CompletedOk);

            jobId = storeWorker.ProcessTransaction("", notExistsPrecondition, "", insertData, Constants.DefaultGraphUri,
                                                   "nt", "UpdateTransaction2");
            var jobStatus = AssertJobCompleted(storeWorker, jobId, JobStatus.TransactionError);
            
            Assert.IsTrue(jobStatus.ExceptionDetail.Message.Contains("Transaction preconditions failed"),
                "Unexpected job exception message: {0}", jobStatus.ExceptionDetail.Message);
        }

        public void TestTransactionWithPrecondition()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            var data =
                @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np> .\n
                  <http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/core/version> ""1""^^<http://www.w3.org/2000/01/rdf-schema#integer> .";

            var jobId = storeWorker.ProcessTransaction("", "", "", data, Constants.DefaultGraphUri, "nt");
            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk && jobStatus.JobStatus != JobStatus.TransactionError)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }
            Assert.IsTrue(jobStatus.JobStatus == JobStatus.CompletedOk, "Initial insert failed: {0} : {1}", jobStatus.Information, jobStatus.ExceptionDetail);

            // now test precondition
            const string preconds = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/core/version> ""1""^^<http://www.w3.org/2000/01/rdf-schema#integer>";
            data =
                @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            jobId = storeWorker.ProcessTransaction(preconds,"", "", data, Constants.DefaultGraphUri, "nt");
            jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.CompletedOk && jobStatus.JobStatus != JobStatus.TransactionError)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }
            Assert.IsTrue(jobStatus.JobStatus == JobStatus.CompletedOk, "Transaction execution failed: {0} : {1}", jobStatus.Information, jobStatus.ExceptionDetail);
        }

        public void TestTransactionWithPreconditionFails()
        {
            // create a store
            var sid = CreateStore();

            // initialise and start the store worker
            var storeWorker = new StoreWorker(Configuration.StoreLocation, sid);
            storeWorker.Start();

            // execute transactions
            const string preconds = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/core/version> ""1""^^<http://www.w3.org/2000/01/rdf-schema#integer>";

            // execute transactions
            const string data = @"<http://www.networkedplanet.com/people/gra> <http://www.networkedplanet.com/types/worksfor> <http://www.networkedplanet.com/companies/np>";

            var jobId = storeWorker.ProcessTransaction(preconds, "", "", data, Constants.DefaultGraphUri, "nt");
            JobExecutionStatus jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            while (jobStatus.JobStatus != JobStatus.TransactionError)
            {
                Thread.Sleep(1000);
                jobStatus = storeWorker.GetJobStatus(jobId.ToString());
            }

            Assert.AreEqual(jobStatus.JobStatus, JobStatus.TransactionError);
        }