public override void Run()
{
try
{
StoreWorker.TransactionLog.LogStartTransaction(this);
var writeStore = StoreWorker.WriteStore;
// process preconditions
Logging.LogInfo("UpdateTransaction {0} - processing preconditions", JobId);
try
{
var preconditionSink = new PreconditionSink(writeStore, PreconditionSink.PreconditionType.ExistsPrecondition);
var parser = new NTriplesParser();
parser.Parse(new StringReader(_preconditions), preconditionSink, _defaultGraphUri);
if (preconditionSink.FailedPreconditionCount > 0)
{
throw new PreconditionFailedException(preconditionSink.FailedPreconditionCount, preconditionSink.GetFailedPreconditions(),
0, String.Empty);
}
}
catch (RdfParserException parserException)
{
throw new BrightstarClientException("Syntax error in preconditions.", parserException);
}
// process deletes
Logging.LogInfo("UpdateTransaction {0} - processing deletes", JobId);
try
{
var delSink = new DeletePatternSink(writeStore);
var parser = new NTriplesParser();
parser.Parse(new StringReader(_deletePatterns), delSink, _defaultGraphUri);
}
catch (RdfParserException parserException)
{
throw new BrightstarClientException("Syntax error in delete patterns.", parserException);
}
try
{
// insert data
Logging.LogInfo("UpdateTransaction {0} - processing inserts", JobId);
var parser = new NTriplesParser();
parser.Parse(new StringReader(_insertData),
new StoreTripleSink(writeStore, JobId, Configuration.TransactionFlushTripleCount),
_defaultGraphUri);
}
catch (RdfParserException parserException)
{
throw new BrightstarClientException("Syntax error in triples to add.", parserException);
}
// commit changes
Logging.LogInfo("UpdateTransaction {0} - committing changes", JobId);
writeStore.Commit(JobId);
// change read store
Logging.LogInfo("UpdateTransaction {0} - invalidating read store", JobId);
StoreWorker.InvalidateReadStore();
// log txn completed
Logging.LogInfo("UpdateTransaction {0} - logging completion", JobId);
StoreWorker.TransactionLog.LogEndSuccessfulTransaction(this);
Logging.LogInfo("UpdateTransaction {0} - done", JobId);
}
catch (PreconditionFailedException ex)
{
StoreWorker.TransactionLog.LogEndFailedTransaction(this);
Logging.LogInfo("Preconditions failed in UpdateTransaction ({0}): Count={1}, Triples={2}", JobId, ex.ExistenceFailureCount, ex.ExistenceFailedTriples);
throw;
}
catch (BrightstarClientException ex)
{
StoreWorker.TransactionLog.LogEndFailedTransaction(this);
Logging.LogError(BrightstarEventId.TransactionClientError,
"Client error reported in UpdateTransaction ({0}): {1}", JobId, ex.InnerException.ToString());
throw;
}
catch (Exception ex)
{
StoreWorker.TransactionLog.LogEndFailedTransaction(this);
Logging.LogError(BrightstarEventId.TransactionServerError,
"Unexpected exception caught in UpdateTransaction ({0}): {1}", JobId, ex);
throw;
}
}
public override void Run()
{
try
{
StoreWorker.TransactionLog.LogStartTransaction(this);
var writeStore = StoreWorker.WriteStore;
// process preconditions
Logging.LogInfo("UpdateTransaction {0} - processing preconditions", JobId);
try
{
var preconditionSink = new PreconditionSink(writeStore);
var parser = new NTriplesParser();
parser.Parse(new StringReader(_preconditions), preconditionSink, _defaultGraphUri);
if (preconditionSink.FailedPreconditionCount > 0)
{
throw new PreconditionFailedException(preconditionSink.FailedPreconditionCount, preconditionSink.GetFailedPreconditions());
}
}
catch (RdfParserException parserException)
{
throw new BrightstarClientException("Syntax error in preconditions.", parserException);
}
// process deletes
Logging.LogInfo("UpdateTransaction {0} - processing deletes", JobId);
try
{
var delSink = new DeletePatternSink(writeStore);
var parser = new NTriplesParser();
parser.Parse(new StringReader(_deletePatterns), delSink, _defaultGraphUri);
}
catch (RdfParserException parserException)
{
throw new BrightstarClientException("Syntax error in delete patterns.", parserException);
}
try
{
// insert data
Logging.LogInfo("UpdateTransaction {0} - processing inserts", JobId);
var parser = new NTriplesParser();
parser.Parse(new StringReader(_insertData),
new StoreTripleSink(writeStore, JobId, Configuration.TransactionFlushTripleCount),
_defaultGraphUri);
}
catch (RdfParserException parserException)
{
throw new BrightstarClientException("Syntax error in triples to add.", parserException);
}
// commit changes
Logging.LogInfo("UpdateTransaction {0} - committing changes", JobId);
writeStore.Commit(JobId);
// change read store
Logging.LogInfo("UpdateTransaction {0} - invalidating read store", JobId);
StoreWorker.InvalidateReadStore();
// log txn completed
Logging.LogInfo("UpdateTransaction {0} - logging completion", JobId);
StoreWorker.TransactionLog.LogEndSuccessfulTransaction(this);
Logging.LogInfo("UpdateTransaction {0} - done", JobId);
}
catch (PreconditionFailedException ex)
{
StoreWorker.TransactionLog.LogEndFailedTransaction(this);
Logging.LogInfo("Preconditions failed in UpdateTransaction ({0}): Count={1}, Triples={2}", JobId, ex.FailureCount, ex.FailedTriples);
throw;
}
catch (BrightstarClientException ex)
{
StoreWorker.TransactionLog.LogEndFailedTransaction(this);
Logging.LogError(BrightstarEventId.TransactionClientError,
"Client error reported in UpdateTransaction ({0}): {1}", JobId, ex.InnerException.ToString());
throw;
}
catch (Exception ex)
{
StoreWorker.TransactionLog.LogEndFailedTransaction(this);
Logging.LogError(BrightstarEventId.TransactionServerError,
"Unexpected exception caught in UpdateTransaction ({0}): {1}",JobId, ex);
throw;
}
}
public void UpdateGraph(string graphUri, IEnumerable<Triple> additions, IEnumerable<Triple> removals)
{
string uniqueImportId = Guid.NewGuid().ToString();
if (graphUri == null) graphUri = Constants.DefaultGraphUri;
if (removals != null)
{
var deleteSink = new DeletePatternSink(_store);
foreach (var removal in removals)
{
var node = removal.Object as ILiteralNode;
if (node != null)
{
deleteSink.Triple(
Stringify(removal.Subject, uniqueImportId), removal.Subject is IBlankNode,
Stringify(removal.Predicate, uniqueImportId), removal.Predicate is IBlankNode,
node.Value, false, true, node.DataType == null ? null : node.DataType.ToString(), node.Language,
removal.GraphUri == null ? graphUri : removal.GraphUri.ToString()
);
}
else
{
deleteSink.Triple(
Stringify(removal.Subject, uniqueImportId), removal.Subject is IBlankNode,
Stringify(removal.Predicate, uniqueImportId), removal.Predicate is IBlankNode,
Stringify(removal.Object, uniqueImportId), removal.Object is IBlankNode, false, null, null,
removal.GraphUri == null ? graphUri : removal.GraphUri.ToString()
);
}
}
}
if (additions != null)
{
foreach (var addition in additions)
{
var t = MakeBrighstarTriple(addition, uniqueImportId);
t.Graph = graphUri;
_store.InsertTriple(t);
}
}
}