internal override RawRecord DataModify(RawRecord record)
{
string srcId = record[this._srcIdIndex].ToValue;
long edgeOffset = long.Parse(record[this._edgeOffsetIndex].ToValue);
JObject srcEdgeObject;
string srcEdgeDocId, sinkEdgeDocId;
JObject srcVertexObject = this.Connection.RetrieveDocumentById(srcId);
EdgeDocumentHelper.FindEdgeBySourceAndOffset(
this.Connection, srcVertexObject, srcId, edgeOffset, false,
out srcEdgeObject, out srcEdgeDocId);
if (srcEdgeObject == null)
{
//TODO: Check is this condition alright?
return(null);
}
string sinkId = (string)srcEdgeObject["_sinkV"];
JObject sinkVertexObject;
if (!string.Equals(sinkId, srcId))
{
sinkVertexObject = this.Connection.RetrieveDocumentById(sinkId);
JObject sinkEdgeObject;
EdgeDocumentHelper.FindEdgeBySourceAndOffset(
this.Connection, sinkVertexObject, srcId, edgeOffset, true,
out sinkEdgeObject, out sinkEdgeDocId);
}
else
{
sinkVertexObject = srcVertexObject; // NOTE: Must not use DeepClone() here!
sinkEdgeDocId = srcEdgeDocId;
}
Dictionary <string, Tuple <JObject, string> > uploadDocuments = new Dictionary <string, Tuple <JObject, string> >();
EdgeDocumentHelper.RemoveEdge(uploadDocuments, this.Connection, srcEdgeDocId, srcVertexObject, false, srcId, edgeOffset);
EdgeDocumentHelper.RemoveEdge(uploadDocuments, this.Connection, sinkEdgeDocId, sinkVertexObject, true, srcId, edgeOffset);
this.Connection.ReplaceOrDeleteDocumentsAsync(uploadDocuments).Wait();
VertexField srcVertexField = this.Connection.VertexCache.GetVertexField(srcId, srcVertexObject);
VertexField sinkVertexField = this.Connection.VertexCache.GetVertexField(sinkId, sinkVertexObject);
srcVertexField.AdjacencyList.RemoveEdgeField(srcId, edgeOffset);
sinkVertexField.RevAdjacencyList.RemoveEdgeField(srcId, edgeOffset);
return(null);
}
internal override RawRecord DataModify(RawRecord record)
{
long edgeOffset = long.Parse(record[this._edgeOffsetIndex].ToValue);
string srcVertexId = record[this._srcVertexIdIndex].ToValue;
JObject srcVertexObject = this.Connection.RetrieveDocumentById(srcVertexId);
string outEdgeDocId;
JObject outEdgeObject;
EdgeDocumentHelper.FindEdgeBySourceAndOffset(
this.Connection, srcVertexObject, srcVertexId, edgeOffset, false,
out outEdgeObject, out outEdgeDocId);
if (outEdgeObject == null)
{
// TODO: Is there something wrong?
Debug.WriteLine($"[UpdateEdgePropertiesOperator] The edge does not exist: vertexId = {srcVertexId}, edgeOffset = {edgeOffset}");
return(null);
}
string sinkVertexId = (string)outEdgeObject["_sinkV"];
JObject sinkVertexObject;
string inEdgeDocId;
JObject inEdgeObject;
if (sinkVertexId.Equals(srcVertexId))
{
sinkVertexObject = srcVertexObject; // NOTE: Must not use DeepClone() here!
}
else
{
sinkVertexObject = this.Connection.RetrieveDocumentById(sinkVertexId);
}
EdgeDocumentHelper.FindEdgeBySourceAndOffset(
this.Connection, sinkVertexObject, srcVertexId, edgeOffset, true,
out inEdgeObject, out inEdgeDocId);
VertexField srcVertexField = this.Connection.VertexCache.GetVertexField(srcVertexId);
VertexField sinkVertexField = this.Connection.VertexCache.GetVertexField(sinkVertexId);
EdgeField outEdgeField = srcVertexField.AdjacencyList.GetEdgeField(srcVertexId, edgeOffset);
EdgeField inEdgeField = sinkVertexField.RevAdjacencyList.GetEdgeField(srcVertexId, edgeOffset);
// Drop all non-reserved properties
if (this.PropertiesToBeUpdated.Count == 1 &&
!this.PropertiesToBeUpdated[0].Item1.SingleQuoted &&
this.PropertiesToBeUpdated[0].Item1.Value.Equals("*", StringComparison.OrdinalIgnoreCase) &&
!this.PropertiesToBeUpdated[0].Item2.SingleQuoted &&
this.PropertiesToBeUpdated[0].Item2.Value.Equals("null", StringComparison.OrdinalIgnoreCase))
{
List <string> toBeDroppedProperties = GraphViewJsonCommand.DropAllEdgeProperties(outEdgeObject);
foreach (var propertyName in toBeDroppedProperties)
{
outEdgeField.EdgeProperties.Remove(propertyName);
}
toBeDroppedProperties = GraphViewJsonCommand.DropAllEdgeProperties(inEdgeObject);
foreach (var propertyName in toBeDroppedProperties)
{
inEdgeField.EdgeProperties.Remove(propertyName);
}
}
else
{
foreach (Tuple <WValueExpression, WValueExpression, int> tuple in this.PropertiesToBeUpdated)
{
WValueExpression keyExpression = tuple.Item1;
WValueExpression valueExpression = tuple.Item2;
if (this.Mode == UpdatePropertyMode.Set)
{
// Modify edgeObject (update the edge property)
JProperty updatedProperty = GraphViewJsonCommand.UpdateProperty(outEdgeObject, keyExpression, valueExpression);
// Update VertexCache
if (updatedProperty == null)
{
outEdgeField.EdgeProperties.Remove(keyExpression.Value);
}
else
{
outEdgeField.UpdateEdgeProperty(updatedProperty, outEdgeField);
}
// Modify edgeObject (update the edge property)
updatedProperty = GraphViewJsonCommand.UpdateProperty(inEdgeObject, keyExpression, valueExpression);
// Update VertexCache
if (updatedProperty == null)
{
inEdgeField.EdgeProperties.Remove(keyExpression.Value);
}
else
{
inEdgeField.UpdateEdgeProperty(updatedProperty, inEdgeField);
}
}
else
{
throw new NotImplementedException();
}
}
}
// Interact with DocDB to update the property
EdgeDocumentHelper.UpdateEdgeProperty(this.Connection, srcVertexObject, outEdgeDocId, false, outEdgeObject);
EdgeDocumentHelper.UpdateEdgeProperty(this.Connection, sinkVertexObject, inEdgeDocId, true, inEdgeObject);
//
// Drop edge property
//
if (this.PropertiesToBeUpdated.Any(t => t.Item2 == null))
{
return(null);
}
return(record);
}