public override void AppendTriples(IEnumerable <Triple> ts, IDocument <StreamReader, TextWriter> document)
{
if (!ts.Any())
{
return;
}
try
{
TextWriter writer = document.BeginWrite(true);
foreach (Triple t in ts)
{
writer.WriteLine(this._formatter.Format(t));
}
writer.Close();
document.EndWrite();
}
catch (AlexandriaException)
{
throw;
}
catch (Exception ex)
{
document.EndWrite();
throw new AlexandriaException("Error appending Triples to Document " + document.Name, ex);
}
}
public void DeleteTriples(IEnumerable <Triple> ts, IDocument <Document, Document> document)
{
//Generate the JSON String
Graph g = new Graph();
g.Assert(ts);
String json = VDS.RDF.Writing.StringWriter.Write(g, this._writer);
Object[] toDelete = MongoDBHelper.JsonArrayToObjects(json);
//Then load the existing Triples from the Document
Document mongoDoc = document.BeginWrite(false);
if (mongoDoc["graph"] != null)
{
//Only need to do something if the Graph is non-empty
List <Object> existing = MongoDBHelper.DocumentListToObjectList(mongoDoc["graph"]);
foreach (Object obj in toDelete)
{
existing.Remove(obj);
}
mongoDoc["graph"] = existing.ToArray();
}
document.EndWrite();
}
public void ToDocument(IGraph g, IDocument <Document, Document> document)
{
Document mongoDoc = document.BeginWrite(false);
//Assign URI if necessary
String graphUri = (g.BaseUri == null) ? String.Empty : g.BaseUri.ToString();
if (mongoDoc["uri"] == null)
{
mongoDoc["uri"] = graphUri;
}
document.EndWrite();
//Then create and save a Document for every Triple in the Graph
foreach (Triple t in g.Triples)
{
Document tripleDoc = new Document();
tripleDoc["subject"] = this._formatter.Format(t.Subject);
tripleDoc["predicate"] = this._formatter.Format(t.Predicate);
tripleDoc["object"] = this._formatter.Format(t.Object);
tripleDoc["graphuri"] = graphUri;
//Only Save if not already in Store
if (this._manager.Database[this._manager.Collection].FindOne(tripleDoc) == null)
{
this._manager.Database[this._manager.Collection].Save(tripleDoc);
}
}
}
public void AppendTriples(IEnumerable <Triple> ts, IDocument <Document, Document> document)
{
//Generate our JSON String
Graph g = new Graph();
g.Assert(ts);
String json = VDS.RDF.Writing.StringWriter.Write(g, this._writer);
//Then convert this to a Document
Document mongoDoc = document.BeginWrite(false);
Object[] temp = MongoDBHelper.JsonArrayToObjects(json);
if (mongoDoc["graph"] != null)
{
List <Object> existing = MongoDBHelper.DocumentListToObjectList(mongoDoc["graph"]);
existing.AddRange(temp);
mongoDoc["graph"] = existing.ToArray();
}
else
{
//If it was null this was a new Document
mongoDoc["graph"] = temp;
}
document.EndWrite();
}
public void ToDocument(IGraph g, IDocument <Document, Document> document)
{
//Generate our JSON String
String json = VDS.RDF.Writing.StringWriter.Write(g, this._writer);
//Then convert this to a Document
Document mongoDoc = document.BeginWrite(false);
mongoDoc["graph"] = MongoDBHelper.JsonArrayToObjects(json);
document.EndWrite();
}
public virtual void ToDocument(IGraph g, IDocument <StreamReader, TextWriter> document)
{
try
{
this._writer.Save(g, document.BeginWrite(false));
document.EndWrite();
}
catch (AlexandriaException)
{
throw;
}
catch (Exception ex)
{
document.EndWrite();
throw new AlexandriaException("Error writing Graph to Document " + document.Name, ex);
}
}
public override void AppendTriples(IEnumerable<Triple> ts, IDocument<StreamReader,TextWriter> document)
{
if (!ts.Any()) return;
try
{
TextWriter writer = document.BeginWrite(true);
foreach (Triple t in ts)
{
writer.WriteLine(this._formatter.Format(t));
}
writer.Close();
document.EndWrite();
}
catch (AlexandriaException)
{
throw;
}
catch (Exception ex)
{
document.EndWrite();
throw new AlexandriaException("Error appending Triples to Document " + document.Name, ex);
}
}
public override void DeleteTriples(IEnumerable <Triple> ts, IDocument <StreamReader, TextWriter> document)
{
if (!ts.Any())
{
return;
}
//Generate the String forms of these Triples
HashSet <String> triples = new HashSet <string>();
foreach (Triple t in ts)
{
triples.Add(this._formatter.Format(t));
}
try
{
//Now read through the file line by line
int lineCount = 0, editedLineCount = 0;
StringBuilder editedOutput = new StringBuilder();
StreamReader reader = document.BeginRead();
while (!reader.EndOfStream)
{
lineCount++;
String line = reader.ReadLine();
//If the Line is a Triple that isn't marked for deletion we pass it through to our edited output
if (!triples.Contains(line))
{
editedOutput.AppendLine(line);
editedLineCount++;
}
}
reader.Close();
document.EndRead();
if (lineCount > editedLineCount || lineCount == 0)
{
//We deleted some Triples so need to reserialize the data
try
{
if (editedLineCount > 0)
{
TextWriter writer = document.BeginWrite(false);
writer.Write(editedOutput.ToString());
writer.Close();
document.EndWrite();
}
else
{
//If there are no lines in the result then delete the document
document.DocumentManager.ReleaseDocument(document.Name);
document.DocumentManager.DeleteDocument(document.Name);
}
}
catch (AlexandriaException)
{
throw;
}
catch (Exception ex)
{
document.EndWrite();
throw new AlexandriaException("Error deleting Triples from Document " + document.Name, ex);
}
}
}
catch (AlexandriaException)
{
throw;
}
catch (Exception ex)
{
document.EndRead();
throw new AlexandriaException("Error deleting Triples from Document " + document.Name, ex);
}
}
public override void DeleteTriples(IEnumerable<Triple> ts, IDocument<StreamReader,TextWriter> document)
{
if (!ts.Any()) return;
//Generate the String forms of these Triples
HashSet<String> triples = new HashSet<string>();
foreach (Triple t in ts)
{
triples.Add(this._formatter.Format(t));
}
try
{
//Now read through the file line by line
int lineCount = 0, editedLineCount = 0;
StringBuilder editedOutput = new StringBuilder();
StreamReader reader = document.BeginRead();
while (!reader.EndOfStream)
{
lineCount++;
String line = reader.ReadLine();
//If the Line is a Triple that isn't marked for deletion we pass it through to our edited output
if (!triples.Contains(line))
{
editedOutput.AppendLine(line);
editedLineCount++;
}
}
reader.Close();
document.EndRead();
if (lineCount > editedLineCount || lineCount == 0)
{
//We deleted some Triples so need to reserialize the data
try
{
if (editedLineCount > 0)
{
TextWriter writer = document.BeginWrite(false);
writer.Write(editedOutput.ToString());
writer.Close();
document.EndWrite();
}
else
{
//If there are no lines in the result then delete the document
document.DocumentManager.ReleaseDocument(document.Name);
document.DocumentManager.DeleteDocument(document.Name);
}
}
catch (AlexandriaException)
{
throw;
}
catch (Exception ex)
{
document.EndWrite();
throw new AlexandriaException("Error deleting Triples from Document " + document.Name, ex);
}
}
}
catch (AlexandriaException)
{
throw;
}
catch (Exception ex)
{
document.EndRead();
throw new AlexandriaException("Error deleting Triples from Document " + document.Name, ex);
}
}
