public override QueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, TransactionToken myTransactionToken)
{
_query = myQuery;
var vertexType = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_typeName),
(stats, vType) => vType);
_WhereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
var expressionGraph = _WhereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken,
myTransactionToken,
new CommonUsageGraph(myGraphDB, mySecurityToken,
myTransactionToken));
var toBeDeletedVertices =
expressionGraph.Select(
new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken),
null, true);
//TODO: do sth that is better than that: ew RequestDelete(new RequestGetVertices(_typeName, toBeDeletedVertices.Select(_ => _.VertexID))).
return myGraphDB.Delete<QueryResult>(
mySecurityToken,
myTransactionToken,
new RequestDelete(new RequestGetVertices(_typeName, toBeDeletedVertices.Select(_ => _.VertexID))).AddAttributes(_toBeDeletedAttributes),
CreateQueryResult);
}
public TResult GetVertexType <TResult>(sones.Library.Commons.Security.SecurityToken mySecurityToken, Int64 myTransactionToken, RequestGetVertexType myRequestGetVertexType, Converter.GetVertexTypeResultConverter <TResult> myOutputconverter)
{
return(_iGraphDB.GetVertexType <TResult>(mySecurityToken,
myTransactionToken,
myRequestGetVertexType,
myOutputconverter));
}
public override IQueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
var sw = Stopwatch.StartNew();
_query = myQuery;
//prepare
var vertexType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_SourceType),
(stats, vtype) => vtype);
//validate
_Condition.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
//calculate
var expressionGraph = _Condition.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
var myToBeUpdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true).ToList();
if (myToBeUpdatedVertices.Count > 0)
{
//update
ProcessUpdate(myToBeUpdatedVertices, myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
}
sw.Stop();
return(GenerateResult(sw.Elapsed.TotalMilliseconds));
}
protected EdgeKey GetBackwardEdgeKey(LevelKey myPath, int desiredBELevel, IGraphDB myGraphDB, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
#region data
IVertexType tempType;
IAttributeDefinition tempAttr;
#endregion
tempType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(myPath.Edges[desiredBELevel].VertexTypeID),
(stats, vertexType) => vertexType);
tempAttr = tempType.GetAttributeDefinition(myPath.Edges[desiredBELevel].AttributeID);
if (tempAttr.Kind != AttributeType.IncomingEdge)
{
return(new EdgeKey(tempType.ID, tempAttr.ID));
}
else
{
IIncomingEdgeDefinition incomingEdgeDefinition = tempAttr as IIncomingEdgeDefinition;
return(new EdgeKey(incomingEdgeDefinition.RelatedEdgeDefinition.SourceVertexType.ID, incomingEdgeDefinition.RelatedEdgeDefinition.ID));
}
}
/// <summary>
/// Validates the id chain if it is not already validated and returns all errors and warnings.
/// </summary>
public void Validate(GQLPluginManager myPluginManager, IGraphDB myGraphDB, SecurityToken mySecurityToken, Int64 myTransactionToken, Boolean allowUndefinedAttributes, params IVertexType[] validationTypes)
{
if (IsValidated)
{
return;
}
var listOfRefs = new Dictionary <String, IVertexType>();
if (validationTypes == null || validationTypes.Count() == 0)
{
foreach (var type in _References)
{
var vertexType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new GraphDB.Request.RequestGetVertexType(type.TypeName),
(stats, theVertexType) => theVertexType);
listOfRefs.Add(type.Reference, vertexType);
}
}
else
{
foreach (var type in validationTypes)
{
listOfRefs.Add(type.Name, type);
}
}
Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, listOfRefs, allowUndefinedAttributes);
}
/// <summary>
/// Creates the request for the graphdb
/// </summary>
/// <returns>The created vertex</returns>
private RequestInsertVertex CreateRequest(GQLPluginManager myPluginManager,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken)
{
#region data
var result = new RequestInsertVertex(_TypeName);
var vertexType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_TypeName),
(stats, vtype) => vtype);
#endregion
if (_AttributeAssignList != null)
{
foreach (var aAttributeDefinition in _AttributeAssignList)
{
ProcessAAttributeDefinition(myPluginManager,
myGraphDB,
mySecurityToken,
myTransactionToken,
vertexType,
aAttributeDefinition,
ref result);
}
}
return(result);
}
private void AddVertexTypeAndAttributesRecursivly(IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken,
IVertexType type,
ref HashSet <IVertexType> types)
{
if (!type.IsUserDefined)
{
return;
}
if (type.HasParentType)
{
if (!types.Contains(type.ParentVertexType))
{
types.Add(type.ParentVertexType);
foreach (var attr in (type.GetAttributeDefinitions(false)).Where(attrDef => attrDef.Kind == AttributeType.Property))
{
var attrType = myGraphDB.GetVertexType <IVertexType>(mySecurityToken,
myTransactionToken,
new RequestGetVertexType(attr.ID),
(stats, vertex) => vertex);
AddVertexTypeAndAttributesRecursivly(myGraphDB,
mySecurityToken,
myTransactionToken,
attrType,
ref types);
}
}
}
}
public override IQueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
_query = myQuery;
var vertexType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_typeName),
(stats, vType) => vType);
_WhereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
var expressionGraph = _WhereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken,
myTransactionToken,
new CommonUsageGraph(myGraphDB, mySecurityToken,
myTransactionToken));
var toBeDeletedVertices =
expressionGraph.Select(
new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken),
null, true);
//TODO: do sth that is better than that: ew RequestDelete(new RequestGetVertices(_typeName, toBeDeletedVertices.Select(_ => _.VertexID))).
return(myGraphDB.Delete <IQueryResult>(
mySecurityToken,
myTransactionToken,
new RequestDelete(new RequestGetVertices(_typeName, toBeDeletedVertices.Select(_ => _.VertexID))).AddAttributes(_toBeDeletedAttributes),
CreateQueryResult));
}
public LevelKey(IEnumerable <EdgeKey> myEdgeKey, IGraphDB myGraphDB, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
Edges = new List <EdgeKey>();
foreach (var aEdgeKey in myEdgeKey)
{
if (aEdgeKey.IsAttributeSet)
{
var vertexType = myGraphDB.GetVertexType <IVertexType>
(mySecurityToken,
myTransactionToken,
new RequestGetVertexType(aEdgeKey.VertexTypeID),
(stats, type) => type);
var attribute = vertexType.GetAttributeDefinition(aEdgeKey.AttributeID);
if (attribute != null && attribute.Kind != AttributeType.Property)
{
//so there is an edge
Edges.Add(aEdgeKey);
Level++;
AddHashCodeFromSingleEdge(ref _hashcode, aEdgeKey);
}
else
{
if (Level == 0)
{
var newEdgeKey = new EdgeKey(aEdgeKey.VertexTypeID);
Edges.Add(newEdgeKey);
AddHashCodeFromSingleEdge(ref _hashcode, newEdgeKey);
break;
}
else
{
break;
}
}
}
else
{
if (Level == 0)
{
Edges.Add(aEdgeKey);
AddHashCodeFromSingleEdge(ref _hashcode, aEdgeKey);
break;
}
else
{
break;
}
}
}
}
public LevelKey(IEnumerable<EdgeKey> myEdgeKey, IGraphDB myGraphDB, SecurityToken mySecurityToken, TransactionToken myTransactionToken)
{
Edges = new List<EdgeKey>();
foreach (var aEdgeKey in myEdgeKey)
{
if (aEdgeKey.IsAttributeSet)
{
var vertexType = myGraphDB.GetVertexType<IVertexType>
(mySecurityToken,
myTransactionToken,
new RequestGetVertexType(aEdgeKey.VertexTypeID),
(stats, type) => type);
var attribute = vertexType.GetAttributeDefinition(aEdgeKey.AttributeID);
if (attribute != null && attribute.Kind != AttributeType.Property)
{
//so there is an edge
Edges.Add(aEdgeKey);
Level++;
AddHashCodeFromSingleEdge(ref _hashcode, aEdgeKey);
}
else
{
if (Level == 0)
{
var newEdgeKey = new EdgeKey(aEdgeKey.VertexTypeID);
Edges.Add(newEdgeKey);
AddHashCodeFromSingleEdge(ref _hashcode, newEdgeKey);
break;
}
else
{
break;
}
}
}
else
{
if (Level == 0)
{
Edges.Add(aEdgeKey);
AddHashCodeFromSingleEdge(ref _hashcode, aEdgeKey);
break;
}
else
{
break;
}
}
}
}
public List <TypeWithProperty> StringParser(String current_string, IGraphDB myDB, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
current_string = current_string.Replace(" ", "");
List <TypeWithProperty> list = new List <TypeWithProperty>();
bool endFlag = false;
int EndPos = 0;
do
{
EndPos = current_string.IndexOf(',');
if (EndPos == -1)
{
EndPos = current_string.Length;
endFlag = true;
}
var typeVertexString = current_string.Substring(0, current_string.IndexOf('.'));
IVertexType typeVertex = null;
try
{
typeVertex = myDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new sones.GraphDB.Request.RequestGetVertexType(typeVertexString),
(statistics, type) => type);
}
catch
{
throw new InvalidFunctionParameterException("edgeType", "Object reference not set to an instance of an object.", "null");
}
var propertyIDString = current_string.Substring(current_string.IndexOf('.') + 1, EndPos - current_string.IndexOf('.') - 1);
var property = typeVertex.GetPropertyDefinition(propertyIDString);
if (property == null)
{
throw new InvalidFunctionParameterException("Property", "Property: " + propertyIDString + " not exist in VertexType:" + typeVertexString, "null");
}
TypeWithProperty value = new TypeWithProperty();
value.PropertyDefinition = property;
value.Type = typeVertex;
if (!list.Contains(value))
{
list.Add(value);
}
if (!endFlag)
{
current_string = current_string.Substring(EndPos + 1);
}
}while (endFlag != true);
return(list);
}
public List<TypeWithProperty> StringParser(String current_string, IGraphDB myDB, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
current_string = current_string.Replace(" ","");
List<TypeWithProperty> list = new List<TypeWithProperty>();
bool endFlag = false;
int EndPos = 0;
do
{
EndPos = current_string.IndexOf(',');
if (EndPos == -1)
{
EndPos = current_string.Length;
endFlag = true;
}
var typeVertexString = current_string.Substring(0, current_string.IndexOf('.'));
IVertexType typeVertex = null;
try
{
typeVertex = myDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new sones.GraphDB.Request.RequestGetVertexType(typeVertexString),
(statistics, type) => type);
}
catch
{
throw new InvalidFunctionParameterException("edgeType", "Object reference not set to an instance of an object.", "null");
}
var propertyIDString = current_string.Substring(current_string.IndexOf('.') + 1, EndPos - current_string.IndexOf('.') - 1);
var property = typeVertex.GetPropertyDefinition(propertyIDString);
if (property==null)
throw new InvalidFunctionParameterException("Property", "Property: " + propertyIDString + " not exist in VertexType:" + typeVertexString, "null");
TypeWithProperty value = new TypeWithProperty();
value.propertyDifinition = property;
value.type = typeVertex;
if (!list.Contains(value))
list.Add(value);
if (!endFlag)
current_string = current_string.Substring(EndPos + 1);
}
while (endFlag != true);
return list;
}
/// <summary>
/// Resolves the TypeReferenceDefinition list to a dictionary of reference (coming from the FROM) and corresponding type
/// </summary>
private Dictionary <String, IVertexType> ResolveTypes(List <TypeReferenceDefinition> myTypeList, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
var typeList = new Dictionary <String, IVertexType>();
foreach (var aType in myTypeList)
{
var t = _graphdb.GetVertexType(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(aType.TypeName),
(stats, type) => type);
if (t == null)
{
throw new VertexTypeDoesNotExistException(aType.TypeName, String.Empty);
}
typeList.Add(aType.Reference, t);
}
return(typeList);
}
public override IQueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
var sw = Stopwatch.StartNew();
IQueryResult result = null;
_query = myQuery;
String myAction = "";
IEnumerable <IVertex> myToBeUpdatedVertices = null;
//prepare
var vertexType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_Type),
(stats, vtype) => vtype);
if (_WhereExpression != null)
{
//validate
_WhereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
//calculate
var expressionGraph = _WhereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
myToBeUpdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true).ToList();
}
if (myToBeUpdatedVertices != null && myToBeUpdatedVertices.Count() > 0)
{
//update
result = ProcessUpdate(myToBeUpdatedVertices, myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
myAction = "Updated";
}
else
{
//insert
result = ProcessInsert(myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
myAction = "Inserted";
}
if (result.Error != null)
{
throw result.Error;
}
sw.Stop();
return(GenerateResult(sw.Elapsed.TotalMilliseconds, result, myAction));
}
/// <summary>
/// <seealso cref=" ADescribeDefinition"/>
/// </summary>
public override QueryResult GetResult(GQLPluginManager myPluginManager,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
TransactionToken myTransactionToken)
{
var resultingVertices = new List<IVertexView>();
ASonesException error = null;
if (!String.IsNullOrEmpty(_TypeName))
{
#region Specific type
var request = new RequestGetVertexType(_TypeName);
var type = myGraphDB.GetVertexType<IVertexType>(mySecurityToken, myTransactionToken, request, (stats, vertexType) => vertexType);
if (type != null)
{
resultingVertices = new List<IVertexView>() { (GenerateOutput(type, 1)) };
}
else
{
error = new VertexTypeDoesNotExistException(_TypeName, "");
}
#endregion
}
else
{
#region All types
foreach (var type in myGraphDB.GetAllVertexTypes<IEnumerable<IVertexType>>(mySecurityToken,
myTransactionToken,
new RequestGetAllVertexTypes(),
(stats, vertexTypes) => vertexTypes))
{
resultingVertices.Add(GenerateOutput(type));
}
#endregion
}
if (error != null)
return new QueryResult("", SonesGQLConstants.GQL, 0L, ResultType.Failed, resultingVertices, error);
else
return new QueryResult("", SonesGQLConstants.GQL, 0L, ResultType.Successful, resultingVertices);
}
private IEnumerable <IVertexType> GetVertexTypes(IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken,
IEnumerable <String> myTypes)
{
#region GetTypeToDump
IEnumerable <IVertexType> typesToDump = new List <IVertexType>();
if (myTypes.IsNullOrEmpty())
{
typesToDump = myGraphDB.GetAllVertexTypes(mySecurityToken,
myTransactionToken,
new RequestGetAllVertexTypes(),
(stats, vertexTypes) => vertexTypes)
.Where(_ => _.IsUserDefined);
}
else
{
var typesToDumpHash = new HashSet <IVertexType>();
foreach (var stringType in myTypes)
{
var type = myGraphDB.GetVertexType(mySecurityToken,
myTransactionToken,
new RequestGetVertexType(stringType),
(stats, vertexType) => vertexType);
if (type == null)
{
throw new TypeDoesNotExistException(stringType, "");
}
//typesToDumpHash.UnionWith(myDBContext.DBTypeManager.GetAllParentTypes(type, true, false));
AddVertexTypeAndAttributesRecursivly(myGraphDB,
mySecurityToken,
myTransactionToken,
type,
ref typesToDumpHash);
}
typesToDump = typesToDumpHash.ToList();
}
#endregion
return(typesToDump);
}
/// <summary>
/// <seealso cref=" ADescribeDefinition"/>
/// </summary>
public override IEnumerable <IVertexView> GetResult(GQLPluginManager myPluginManager,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken)
{
var resultingVertices = new List <IVertexView>();
if (!String.IsNullOrEmpty(_TypeName))
{
#region Specific type
var request = new RequestGetVertexType(_TypeName);
var type = myGraphDB.GetVertexType <IVertexType>(mySecurityToken, myTransactionToken, request, (stats, vertexType) => vertexType);
if (type != null)
{
resultingVertices = new List <IVertexView>()
{
(GenerateOutput(type, 1))
};
}
else
{
throw new VertexTypeDoesNotExistException(_TypeName, "");
}
#endregion
}
else
{
#region All types
foreach (var type in myGraphDB.GetAllVertexTypes <IEnumerable <IVertexType> >(mySecurityToken,
myTransactionToken,
new RequestGetAllVertexTypes(),
(stats, vertexTypes) => vertexTypes))
{
resultingVertices.Add(GenerateOutput(type));
}
#endregion
}
return(resultingVertices);
}
/// <summary>
/// <seealso cref=" ADescribeDefinition"/>
/// </summary>
public override IEnumerable<IVertexView> GetResult(GQLPluginManager myPluginManager,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken)
{
var resultingVertices = new List<IVertexView>();
if (!String.IsNullOrEmpty(_TypeName))
{
#region Specific type
var request = new RequestGetVertexType(_TypeName);
var type = myGraphDB.GetVertexType<IVertexType>(mySecurityToken, myTransactionToken, request, (stats, vertexType) => vertexType);
if (type != null)
{
resultingVertices = new List<IVertexView>() { (GenerateOutput(type, 1)) };
}
else
{
throw new VertexTypeDoesNotExistException(_TypeName, "");
}
#endregion
}
else
{
#region All types
foreach (var type in myGraphDB.GetAllVertexTypes<IEnumerable<IVertexType>>(mySecurityToken,
myTransactionToken,
new RequestGetAllVertexTypes(),
(stats, vertexTypes) => vertexTypes))
{
resultingVertices.Add(GenerateOutput(type));
}
#endregion
}
return resultingVertices;
}
public override IQueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
_query = myQuery;
//prepare
var vertexType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_TypeName),
(stats, vtype) => vtype);
//validate
_whereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
//calculate
var expressionGraph = _whereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
var myToBeUpdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true).ToList();
switch (myToBeUpdatedVertices.Count)
{
case 0:
//insert
throw new ReplaceException("There are no vertices that match the where expression, so it's not possible to execute a Replace statement. Try using InsertOrUpdate.");
case 1:
//delete
ProcessDelete(myToBeUpdatedVertices[0], myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
//insert
return(ProcessInsert(myGraphDB, myPluginManager, mySecurityToken, myTransactionToken));
default:
//error
throw new NotImplementedQLException("It's currenty not implemented to InsertOrReplace more than one vertex");
}
}
public override QueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
_query = myQuery;
//prepare
var vertexType = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_TypeName),
(stats, vtype) => vtype);
//validate
_whereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
//calculate
var expressionGraph = _whereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
var myToBeUpdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true).ToList();
switch (myToBeUpdatedVertices.Count)
{
case 0:
//insert
throw new ReplaceException("There are no vertices that match the where expression, so it's not possible to execute a Replace statement. Try using InsertOrUpdate.");
case 1:
//delete
ProcessDelete(myToBeUpdatedVertices[0], myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
//insert
return ProcessInsert(myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
default:
//error
throw new NotImplementedQLException("It's currenty not implemented to InsertOrReplace more than one vertex");
}
}
private void Helper(IGraphDB graph, SecurityToken sec, Int64 trans, List <TypeWithProperty> type_property_object, List <Tuple <long, long> > PATHShort)
{
List <Tuple <String, String> > output = new List <Tuple <string, string> >();
this._stringPath.Clear();
var StartTypeLong = PATHShort.Find(x => x.Item2 == 0);
var StartType = graph.GetVertexType(sec,
trans,
new sones.GraphDB.Request.RequestGetVertexType(StartTypeLong.Item1),
(statistics, type) => type);
this._stringPath.Add(Tuple.Create("Starting VertexType for SELECT", StartType.Name));
String str = StartType.Name;
foreach (TypeWithProperty value in type_property_object.Where(x => x.Type.ID == StartType.ID))
{
this._stringPath.Add(Tuple.Create(StartType.Name + '.' + value.PropertyDefinition.Name, StartType.Name + '.' + value.PropertyDefinition.Name));
}
Recurs(str, StartType, type_property_object, PATHShort);
}
public override FuncParameter ExecFunc(IAttributeDefinition myAttributeDefinition,
Object myCallingObject,
IVertex myStartVertex,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken,
params FuncParameter[] myParams)
{
#region initialize data
var graph = myGraphDB;
// The edge we starting of (e.g. Friends)
var typeAttribute = myAttributeDefinition;
if (myStartVertex == null)
{
throw new InvalidFunctionParameterException("StartVertex", "Vertex that represents the start vertex", "null");
}
//set the start node
var startNode = myStartVertex;
if ((myParams[0].Value as IEnumerable <IVertex>) == null)
{
throw new InvalidFunctionParameterException("TargetVertex", "Set of vertices that represents the target vertices", "null");
}
//set the target node
var targetNode = (myParams[0].Value as IEnumerable <IVertex>).First();
//set the maximum depth
UInt64 maxDepth = Convert.ToUInt64(myParams[1].Value);
//set the maximum path length
UInt64 maxPathLength = Convert.ToUInt64(myParams[2].Value);
//mark if only the shortest path should be searched
bool onlyShortestPath = Convert.ToBoolean(myParams[3].Value);
//mark if all paths should be searched
bool allPaths = Convert.ToBoolean(myParams[4].Value);
if (!onlyShortestPath && !allPaths)
{
allPaths = true;
}
bool useBidirectionalBFS = false;
if (myParams.GetLength(0) == 6)
{
//mark if the BidirectionalBFS should be used
useBidirectionalBFS = Convert.ToBoolean(myParams[5].Value);
}
var vertexType = myGraphDB.GetVertexType <IVertexType>(mySecurityToken,
myTransactionToken,
new RequestGetVertexType(startNode.VertexTypeID),
(stats, type) => type);
if (vertexType == null)
{
throw new InvalidFunctionParameterException("StartVertexType",
"VertexType that represents the start vertex type not found",
startNode.VertexTypeID);
}
#endregion
#region check correctness of parameters
//check if values are correct
if (maxDepth < 1)
{
throw new InvalidFunctionParameterException("maxDepth", ">= 1", maxDepth.ToString());
}
if (maxPathLength < 2)
{
throw new InvalidFunctionParameterException("maxPathLength", ">= 2", maxPathLength.ToString());
}
#endregion
#region call graph function
HashSet <List <Tuple <long, long> > > paths = null;
//call BFS find methods
if (useBidirectionalBFS)
{
paths = new BidirectionalBFS().Find(typeAttribute,
vertexType,
startNode,
targetNode,
onlyShortestPath,
allPaths,
maxDepth, maxPathLength);
}
else
{
paths = new BFS().Find(typeAttribute,
vertexType,
startNode,
targetNode,
onlyShortestPath,
allPaths,
maxDepth,
maxPathLength);
}
#endregion
#region create output
if (paths != null)
{
#region create outputted views
List <List <Tuple <long, long> > .Enumerator> enumerators = new List <List <Tuple <long, long> > .Enumerator>();
foreach (var path in paths)
{
enumerators.Add(path.GetEnumerator());
}
var view = GenerateVertexView(enumerators);
#endregion
return(new FuncParameter(view));
}
else
{
return(new FuncParameter(new VertexView(null, null)));
}
#endregion
}
/// <summary>
/// Algorithm Dijkstra for find all shortest path from start Vertex to all others Vertices
/// </summary>
/// <param name="myAttributeDefinition"></param>
/// <param name="myCallingObject"></param>
/// <param name="myStartVertex"></param>
/// <param name="myGraphDB"></param>
/// <param name="maxDepth"></param>
/// <param name="mySecurityToken"></param>
/// <param name="myTransactionToken"></param>
/// <returns></returns>
private Tuple<IVertex, DataDijkstra> FindShortPathToAll(IAttributeDefinition myAttributeDefinition,
Object myCallingObject,
IVertex myStartVertex,
IGraphDB myGraphDB,
UInt64 maxDepth,
SecurityToken mySecurityToken,
Int64 myTransactionToken)
{
if (myStartVertex == null)
throw new InvalidFunctionParameterException("StartVertex", "Vertex that represents the start vertex", "null");
//set the start node
var currentVertex = myStartVertex;
var myType = myGraphDB.GetVertexType<IVertexType>(mySecurityToken,
myTransactionToken,
new sones.GraphDB.Request.RequestGetVertexType(myAttributeDefinition.RelatedType.Name),
(statistics, type) => type);
var myEdgeType = myAttributeDefinition.ID;
var hasProperty = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name).InnerEdgeType.HasProperty("Weight");
long myPropertyID = 0;
if (hasProperty == true)
{
myPropertyID = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name).InnerEdgeType.GetPropertyDefinition("Weight").ID;
}
var edgeTypeDifinition = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name);
DataDijkstra lists = new DataDijkstra();
BufferDijkstra buffer = new BufferDijkstra();
buffer.Add(myStartVertex, 0, 0);
lists.Add(currentVertex, 0, 0, null,null, currentVertex);
double currentVertexDistance = 0;
ulong currentVertexDepth = 0;
while (buffer.Count != 0)
{
if (currentVertexDepth < maxDepth)
{
var hyperEdge = currentVertex.GetOutgoingHyperEdge(myEdgeType);
if (hyperEdge != null)
{
var singleEdge = hyperEdge.GetAllEdges();
for (int iCount = 0; iCount < singleEdge.Count(); iCount++)
{
var TargetVertex = singleEdge.ElementAt(iCount).GetTargetVertex();
double current_distance;
if (hasProperty == true)
{
current_distance = Math.Abs(singleEdge.ElementAt(iCount).GetProperty<double>(myPropertyID));
}
else
{
current_distance = 1;
}
var current_singleEdge = singleEdge.ElementAt(iCount);
var TargetVertexID = lists.GetElement(TargetVertex.VertexID);
if (TargetVertexID == null)
{
buffer.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
edgeTypeDifinition,
currentVertex);
}
else
{
if (currentVertexDistance + current_distance < TargetVertexID.Item2)
{
buffer.Set(TargetVertexID.Item2,TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
edgeTypeDifinition,
currentVertex);
}
else
if (currentVertexDistance + current_distance == TargetVertexID.Item2 && currentVertexDepth + 1 < TargetVertexID.Item3)
{
buffer.Set(TargetVertexID.Item2,TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
edgeTypeDifinition,
currentVertex);
}
}
}
//delate from Buffer Vertex and any information
}
}
buffer.Remove(currentVertexDistance,currentVertex.VertexID);
//Minimum in distance from Buffer
if (buffer.Count != 0)
{
var minVertex = buffer.Min();
currentVertex = minVertex.Item1;
currentVertexDistance = minVertex.Item2;
currentVertexDepth = minVertex.Item3;
}
}
var result = Tuple.Create(myStartVertex, lists);
buffer.Clear();
lists.Clear();
buffer = null;
lists = null;
return result;
}
public override FuncParameter ExecFunc(IAttributeDefinition myAttributeDefinition,
Object myCallingObject,
IVertex myStartVertex,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken,
params FuncParameter[] myParams)
{
#region initialization
if (myStartVertex == null)
throw new InvalidFunctionParameterException("StartVertex", "Vertex that represents the start vertex", "null");
//set the start node
var currentVertex = myStartVertex;
if ((myParams[0].Value as IEnumerable<IVertex>).First() == null)
throw new InvalidFunctionParameterException("EndVertex", "Set of vertices that represents the target vertices", "null");
//set the target node
var endVertex = (myParams[0].Value as IEnumerable<IVertex>).First();
//set the maximum depth
if (myAttributeDefinition == null)
throw new InvalidFunctionParameterException("EdgeType ", "Edge type not found", "faild");
UInt64 maxDepth = Convert.ToUInt64(myParams[1].Value);
if (maxDepth < 1)
throw new InvalidFunctionParameterException("MaxDepth", "Max depth to low", maxDepth.ToString());
var myType = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new sones.GraphDB.Request.RequestGetVertexType(myAttributeDefinition.RelatedType.Name),
(statistics, type) => type);
var myEdgeType = myAttributeDefinition.ID;
var hasProperty = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name).InnerEdgeType.HasProperty("Weight");
long myPropertyID = 0;
if (hasProperty == true)
{
myPropertyID = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name).InnerEdgeType.GetPropertyDefinition("Weight").ID;
}
Dictionary<IOutgoingEdgeDefinition, Tuple<bool, long>> edgeTypeID = new Dictionary<IOutgoingEdgeDefinition, Tuple<bool, long>>();
var edgeType = myParams[2].Value.ToString();
if (edgeType == "")
{
edgeTypeID.Add(myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name), Tuple.Create(hasProperty, myPropertyID));
}
else
{
if (edgeType.Contains("all edgeType"))
{
edgeTypeID = this.AllEdgeWithTargetVertex(myType);
}
else
{
edgeTypeID = this.StringParser(edgeType, myType);
if (!edgeTypeID.ContainsKey(myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name)))
edgeTypeID.Add(myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name), Tuple.Create(hasProperty, myPropertyID));
}
}
List<UInt64> depthBuffer = new List<UInt64>();
List<Tuple<ISingleEdge, IOutgoingEdgeDefinition>> edgeBuffer = new List<Tuple<ISingleEdge, IOutgoingEdgeDefinition>>();
List<double> distanceBuffer = new List<double>();
List<IVertex> VertexBuffer = new List<IVertex>();
BufferDijkstra buf = new BufferDijkstra();
DataDijkstra lists = new DataDijkstra();
buf.Add(myStartVertex, 0, 0);
lists.Add(currentVertex, 0, 0, null,null, currentVertex);
bool endVertexFlag = false;
#endregion
#region Dijkstra algorithm
double currentVertexDistance = 0;
ulong currentVertexDepth = 0;
double endVertexDistance = 0;
ulong endvertexDepth = 0;
Stopwatch clock = new Stopwatch();
clock.Start();
while (buf.Count != 0)
{
if (currentVertexDepth < maxDepth)
{
List<Tuple<ISingleEdge, IOutgoingEdgeDefinition>> AllsingleEdge = new List<Tuple<ISingleEdge, IOutgoingEdgeDefinition>>();
foreach (IOutgoingEdgeDefinition id in edgeTypeID.Keys)
{
var hyperEdge = currentVertex.GetOutgoingHyperEdge(id.ID);
if (hyperEdge != null)
{
var singleEdge = hyperEdge.GetAllEdges();
foreach (ISingleEdge value in singleEdge)
{
AllsingleEdge.Add(Tuple.Create(value,id));
}
}
}
if (AllsingleEdge != null)
{
for (int iCount = 0; iCount < AllsingleEdge.Count(); iCount++)
{
var elementSingleEdge = AllsingleEdge.ElementAt(iCount);
var TargetVertex = elementSingleEdge.Item1.GetTargetVertex();
double current_distance=0;
if (edgeTypeID[elementSingleEdge.Item2].Item1 == true)
{
current_distance = Math.Abs(AllsingleEdge.ElementAt(iCount).Item1.GetProperty<double>(edgeTypeID[elementSingleEdge.Item2].Item2));
}
else
{
current_distance = 1;
}
var current_singleEdge = AllsingleEdge.ElementAt(iCount).Item1;
var TargetVertexID = lists.GetElement(TargetVertex.VertexID);
if (TargetVertexID == null)
{
if (!endVertexFlag)
{
buf.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
else
if (endVertexDistance > currentVertexDistance + current_distance ||
(endVertexDistance == currentVertexDistance + current_distance &&
endvertexDepth > currentVertexDepth + 1))
{
buf.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
}
else
{
if (currentVertexDistance + current_distance < TargetVertexID.Item2)
{
if (!endVertexFlag)
{
buf.Set(TargetVertexID.Item2,TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
else
if (endVertexDistance > currentVertexDistance + current_distance ||
(endVertexDistance == currentVertexDistance + current_distance &&
endvertexDepth > currentVertexDepth + 1))
{
buf.Set(TargetVertexID.Item2,TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
}
else if (currentVertexDistance + current_distance == TargetVertexID.Item2 && currentVertexDepth + 1 < TargetVertexID.Item3)
{
if (!endVertexFlag)
{
buf.Set(TargetVertexID.Item2,TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
else
if (endVertexDistance > currentVertexDistance + current_distance ||
(endVertexDistance == currentVertexDistance + current_distance &&
endvertexDepth > currentVertexDepth + 1))
{
buf.Set(TargetVertexID.Item2,TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
}
}
if (TargetVertex == endVertex)
{
endVertexFlag = true;
var endNode = lists.GetElement(endVertex.VertexID);
endVertexDistance = endNode.Item2;
endvertexDepth = endNode.Item3;
}
}
}
}
//delate from Buffer current Vertex or all
if (currentVertex == endVertex)
{
buf.Clear();
}
else
{
buf.Remove(currentVertexDistance,currentVertex.VertexID);
}
//Minimum distance from Buffer
if (buf.Count != 0)
{
var minVertex = buf.Min();
currentVertex = minVertex.Item1;
currentVertexDistance = minVertex.Item2;
currentVertexDepth = minVertex.Item3;
}
}
#endregion
clock.Stop();
#region create output
edgeBuffer.Add(null);
currentVertex = endVertex;
while (currentVertex != myStartVertex)
{
var current_tuple = lists.GetElement(currentVertex.VertexID);
if (current_tuple == null)
throw new InvalidFunctionParameterException("MaxDepth", "Max depth to low or end node is not with start node connected, find't end node", maxDepth);
VertexBuffer.Add(currentVertex);
distanceBuffer.Add(current_tuple.Item2);
depthBuffer.Add(current_tuple.Item3);
edgeBuffer.Add(current_tuple.Item4);
currentVertex = current_tuple.Item5;
}
depthBuffer.Add(0);
distanceBuffer.Add(0);
VertexBuffer.Add(myStartVertex);
edgeBuffer.Add(null);
var path = CreateVertexView(myPropertyID, VertexBuffer, distanceBuffer, edgeBuffer, depthBuffer);
#endregion
distanceBuffer = null;
VertexBuffer = null;
edgeBuffer = null;
depthBuffer = null;
buf.Clear();
lists.Clear();
buf = null;
lists = null;
return new FuncParameter(path);
}
protected EdgeKey GetBackwardEdgeKey(LevelKey myPath, int desiredBELevel, IGraphDB myGraphDB, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
#region data
IVertexType tempType;
IAttributeDefinition tempAttr;
#endregion
tempType = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(myPath.Edges[desiredBELevel].VertexTypeID),
(stats, vertexType) => vertexType);
tempAttr = tempType.GetAttributeDefinition(myPath.Edges[desiredBELevel].AttributeID);
if (tempAttr.Kind != AttributeType.IncomingEdge)
{
return new EdgeKey(tempType.ID, tempAttr.ID);
}
else
{
IIncomingEdgeDefinition incomingEdgeDefinition = tempAttr as IIncomingEdgeDefinition;
return new EdgeKey(incomingEdgeDefinition.RelatedEdgeDefinition.SourceVertexType.ID, incomingEdgeDefinition.RelatedEdgeDefinition.ID);
}
}
private void Helper(IGraphDB graph, SecurityToken sec, Int64 trans, List<TypeWithProperty> type_property_object, List<Tuple<long, long>> PATHShort)
{
List<Tuple<String, String>> output = new List<Tuple<string, string>>();
this._stringPath.Clear();
var StartTypeLong = PATHShort.Find(x => x.Item2 == 0);
var StartType = graph.GetVertexType(sec,
trans,
new sones.GraphDB.Request.RequestGetVertexType(StartTypeLong.Item1),
(statistics, type) => type);
this._stringPath.Add(Tuple.Create("Starting VertexType for SELECT", StartType.Name));
String str = StartType.Name;
foreach (TypeWithProperty value in type_property_object.Where(x => x.Type.ID == StartType.ID))
this._stringPath.Add(Tuple.Create(StartType.Name + '.' + value.PropertyDefinition.Name,StartType.Name + '.' + value.PropertyDefinition.Name));
Recurs(str, StartType, type_property_object, PATHShort);
}
public override QueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, TransactionToken myTransactionToken)
{
var sw = Stopwatch.StartNew();
_query = myQuery;
//prepare
var vertexTypeSource = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_SourceType),
(stats, vtype) => vtype);
var vertexTypeTarget = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_TargetType),
(stats, vtype) => vtype);
//validate
_Condition.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexTypeSource);
//calculate
var expressionGraph = _Condition.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
var myToBeUpdatedVertices = expressionGraph.Select(new LevelKey(vertexTypeSource.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true).ToList();
if (myToBeUpdatedVertices.Count > 0)
{
//update
ProcessUpdate(myToBeUpdatedVertices, myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
}
sw.Stop();
return GenerateResult(sw.Elapsed.TotalMilliseconds);
}
/// <summary>
/// Algorithm Dijkstra for find all shortest path from start Vertex to all others Vertices
/// </summary>
/// <param name="myAttributeDefinition"></param>
/// <param name="myCallingObject"></param>
/// <param name="myStartVertex"></param>
/// <param name="myGraphDB"></param>
/// <param name="maxDepth"></param>
/// <param name="mySecurityToken"></param>
/// <param name="myTransactionToken"></param>
/// <returns></returns>
private Tuple <IVertex, DataDijkstra> FindShortPathToAll(IAttributeDefinition myAttributeDefinition,
Object myCallingObject,
IVertex myStartVertex,
IGraphDB myGraphDB,
UInt64 maxDepth,
SecurityToken mySecurityToken,
Int64 myTransactionToken)
{
if (myStartVertex == null)
{
throw new InvalidFunctionParameterException("StartVertex", "Vertex that represents the start vertex", "null");
}
//set the start node
var currentVertex = myStartVertex;
var myType = myGraphDB.GetVertexType <IVertexType>(mySecurityToken,
myTransactionToken,
new sones.GraphDB.Request.RequestGetVertexType(myAttributeDefinition.RelatedType.Name),
(statistics, type) => type);
var myEdgeType = myAttributeDefinition.ID;
var hasProperty = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name).InnerEdgeType.HasProperty("Weight");
long myPropertyID = 0;
if (hasProperty == true)
{
myPropertyID = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name).InnerEdgeType.GetPropertyDefinition("Weight").ID;
}
var edgeTypeDifinition = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name);
DataDijkstra lists = new DataDijkstra();
BufferDijkstra buffer = new BufferDijkstra();
buffer.Add(myStartVertex, 0, 0);
lists.Add(currentVertex, 0, 0, null, null, currentVertex);
double currentVertexDistance = 0;
ulong currentVertexDepth = 0;
while (buffer.Count != 0)
{
if (currentVertexDepth < maxDepth)
{
var hyperEdge = currentVertex.GetOutgoingHyperEdge(myEdgeType);
if (hyperEdge != null)
{
var singleEdge = hyperEdge.GetAllEdges();
for (int iCount = 0; iCount < singleEdge.Count(); iCount++)
{
var TargetVertex = singleEdge.ElementAt(iCount).GetTargetVertex();
double current_distance;
if (hasProperty == true)
{
current_distance = Math.Abs(singleEdge.ElementAt(iCount).GetProperty <double>(myPropertyID));
}
else
{
current_distance = 1;
}
var current_singleEdge = singleEdge.ElementAt(iCount);
var TargetVertexID = lists.GetElement(TargetVertex.VertexID);
if (TargetVertexID == null)
{
buffer.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
edgeTypeDifinition,
currentVertex);
}
else
{
if (currentVertexDistance + current_distance < TargetVertexID.Item2)
{
buffer.Set(TargetVertexID.Item2, TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
edgeTypeDifinition,
currentVertex);
}
else
if (currentVertexDistance + current_distance == TargetVertexID.Item2 && currentVertexDepth + 1 < TargetVertexID.Item3)
{
buffer.Set(TargetVertexID.Item2, TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
edgeTypeDifinition,
currentVertex);
}
}
}
//delate from Buffer Vertex and any information
}
}
buffer.Remove(currentVertexDistance, currentVertex.VertexID);
//Minimum in distance from Buffer
if (buffer.Count != 0)
{
var minVertex = buffer.Min();
currentVertex = minVertex.Item1;
currentVertexDistance = minVertex.Item2;
currentVertexDepth = minVertex.Item3;
}
}
var result = Tuple.Create(myStartVertex, lists);
buffer.Clear();
lists.Clear();
buffer = null;
lists = null;
return(result);
}
private void AddVertexTypeAndAttributesRecursivly(IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken,
IVertexType type,
ref HashSet<IVertexType> types)
{
if (!type.IsUserDefined) return;
if (type.HasParentType)
{
if (!types.Contains(type.ParentVertexType))
{
types.Add(type.ParentVertexType);
foreach (var attr in (type.GetAttributeDefinitions(false)).Where(attrDef => attrDef.Kind == AttributeType.Property))
{
var attrType = myGraphDB.GetVertexType<IVertexType>(mySecurityToken,
myTransactionToken,
new RequestGetVertexType(attr.ID),
(stats, vertex) => vertex);
AddVertexTypeAndAttributesRecursivly(myGraphDB,
mySecurityToken,
myTransactionToken,
attrType,
ref types);
}
}
}
}
public override IQueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
var sw = Stopwatch.StartNew();
IQueryResult result = null;
_query = myQuery;
String myAction = "";
IEnumerable<IVertex> myToBeUpdatedVertices = null;
//prepare
var vertexType = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_Type),
(stats, vtype) => vtype);
if (_WhereExpression != null)
{
//validate
_WhereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
//calculate
var expressionGraph = _WhereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
myToBeUpdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true).ToList();
}
if (myToBeUpdatedVertices != null && myToBeUpdatedVertices.Count() > 0)
{
//update
result = ProcessUpdate(myToBeUpdatedVertices, myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
myAction = "Updated";
}
else
{
//insert
result = ProcessInsert(myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
myAction = "Inserted";
}
if (result.Error != null)
throw result.Error;
sw.Stop();
return GenerateResult(sw.Elapsed.TotalMilliseconds, result, myAction);
}
private IEnumerable<IVertexType> GetVertexTypes(IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken,
IEnumerable<String> myTypes)
{
#region GetTypeToDump
IEnumerable<IVertexType> typesToDump = new List<IVertexType>();
if (myTypes.IsNullOrEmpty())
typesToDump = myGraphDB.GetAllVertexTypes(mySecurityToken,
myTransactionToken,
new RequestGetAllVertexTypes(),
(stats, vertexTypes) => vertexTypes)
.Where(_ => _.IsUserDefined);
else
{
var typesToDumpHash = new HashSet<IVertexType>();
foreach (var stringType in myTypes)
{
var type = myGraphDB.GetVertexType(mySecurityToken,
myTransactionToken,
new RequestGetVertexType(stringType),
(stats, vertexType) => vertexType);
if (type == null)
throw new TypeDoesNotExistException(stringType, "");
//typesToDumpHash.UnionWith(myDBContext.DBTypeManager.GetAllParentTypes(type, true, false));
AddVertexTypeAndAttributesRecursivly(myGraphDB,
mySecurityToken,
myTransactionToken,
type,
ref typesToDumpHash);
}
typesToDump = typesToDumpHash.ToList();
}
#endregion
return typesToDump;
}
public override FuncParameter ExecFunc(IAttributeDefinition myAttributeDefinition,
Object myCallingObject,
IVertex myStartVertex,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken,
params FuncParameter[] myParams)
{
#region initialize data
var graph = myGraphDB;
// The edge we starting of (e.g. Friends)
var typeAttribute = myAttributeDefinition;
if (myStartVertex == null)
throw new InvalidFunctionParameterException("StartVertex", "Vertex that represents the start vertex", "null");
//set the start node
var startNode = myStartVertex;
if ((myParams[0].Value as IEnumerable<IVertex>) == null)
throw new InvalidFunctionParameterException("TargetVertex", "Set of vertices that represents the target vertices", "null");
//set the target node
var targetNode = (myParams[0].Value as IEnumerable<IVertex>).First();
//set the maximum depth
UInt64 maxDepth = Convert.ToUInt64(myParams[1].Value);
//set the maximum path length
UInt64 maxPathLength = Convert.ToUInt64(myParams[2].Value);
//mark if only the shortest path should be searched
bool onlyShortestPath = Convert.ToBoolean(myParams[3].Value);
//mark if all paths should be searched
bool allPaths = Convert.ToBoolean(myParams[4].Value);
if (!onlyShortestPath && !allPaths)
{
allPaths = true;
}
bool useBidirectionalBFS = false;
if(myParams.GetLength(0) == 6)
//mark if the BidirectionalBFS should be used
useBidirectionalBFS = Convert.ToBoolean(myParams[5].Value);
var vertexType = myGraphDB.GetVertexType<IVertexType>(mySecurityToken,
myTransactionToken,
new RequestGetVertexType(startNode.VertexTypeID),
(stats, type) => type);
if (vertexType == null)
throw new InvalidFunctionParameterException("StartVertexType",
"VertexType that represents the start vertex type not found",
startNode.VertexTypeID);
#endregion
#region check correctness of parameters
//check if values are correct
if (maxDepth < 1)
throw new InvalidFunctionParameterException("maxDepth", ">= 1", maxDepth.ToString());
if (maxPathLength < 2)
throw new InvalidFunctionParameterException("maxPathLength", ">= 2", maxPathLength.ToString());
#endregion
#region call graph function
HashSet<List<Tuple<long, long>>> paths = null;
//call BFS find methods
if (useBidirectionalBFS)
paths = new BidirectionalBFS().Find(typeAttribute,
vertexType,
startNode,
targetNode,
onlyShortestPath,
allPaths,
maxDepth, maxPathLength);
else
paths = new BFS().Find(typeAttribute,
vertexType,
startNode,
targetNode,
onlyShortestPath,
allPaths,
maxDepth,
maxPathLength);
#endregion
#region create output
if (paths != null)
{
#region create outputted views
List<List<Tuple<long, long>>.Enumerator> enumerators = new List<List<Tuple<long, long>>.Enumerator>();
foreach (var path in paths)
{
enumerators.Add(path.GetEnumerator());
}
var view = GenerateVertexView(enumerators);
#endregion
return new FuncParameter(view);
}
else
{
return new FuncParameter(new VertexView(null, null));
}
#endregion
}
public override FuncParameter ExecFunc(IAttributeDefinition myAttributeDefinition,
Object myCallingObject,
IVertex myStartVertex,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken,
params FuncParameter[] myParams)
{
#region initialization
if (myStartVertex == null)
{
throw new InvalidFunctionParameterException("StartVertex", "Vertex that represents the start vertex", "null");
}
//set the start node
var currentVertex = myStartVertex;
if ((myParams[0].Value as IEnumerable <IVertex>).First() == null)
{
throw new InvalidFunctionParameterException("EndVertex", "Set of vertices that represents the target vertices", "null");
}
//set the target node
var endVertex = (myParams[0].Value as IEnumerable <IVertex>).First();
//set the maximum depth
if (myAttributeDefinition == null)
{
throw new InvalidFunctionParameterException("EdgeType ", "Edge type not found", "faild");
}
UInt64 maxDepth = Convert.ToUInt64(myParams[1].Value);
if (maxDepth < 1)
{
throw new InvalidFunctionParameterException("MaxDepth", "Max depth to low", maxDepth.ToString());
}
var myType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new sones.GraphDB.Request.RequestGetVertexType(myAttributeDefinition.RelatedType.Name),
(statistics, type) => type);
var myEdgeType = myAttributeDefinition.ID;
var hasProperty = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name).InnerEdgeType.HasProperty("Weight");
long myPropertyID = 0;
if (hasProperty == true)
{
myPropertyID = myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name).InnerEdgeType.GetPropertyDefinition("Weight").ID;
}
Dictionary <IOutgoingEdgeDefinition, Tuple <bool, long> > edgeTypeID = new Dictionary <IOutgoingEdgeDefinition, Tuple <bool, long> >();
var edgeType = myParams[2].Value.ToString();
if (edgeType == "")
{
edgeTypeID.Add(myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name), Tuple.Create(hasProperty, myPropertyID));
}
else
{
if (edgeType.Contains("all edgeType"))
{
edgeTypeID = this.AllEdgeWithTargetVertex(myType);
}
else
{
edgeTypeID = this.StringParser(edgeType, myType);
if (!edgeTypeID.ContainsKey(myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name)))
{
edgeTypeID.Add(myType.GetOutgoingEdgeDefinition(myAttributeDefinition.Name), Tuple.Create(hasProperty, myPropertyID));
}
}
}
List <UInt64> depthBuffer = new List <UInt64>();
List <Tuple <ISingleEdge, IOutgoingEdgeDefinition> > edgeBuffer = new List <Tuple <ISingleEdge, IOutgoingEdgeDefinition> >();
List <double> distanceBuffer = new List <double>();
List <IVertex> VertexBuffer = new List <IVertex>();
BufferDijkstra buf = new BufferDijkstra();
DataDijkstra lists = new DataDijkstra();
buf.Add(myStartVertex, 0, 0);
lists.Add(currentVertex, 0, 0, null, null, currentVertex);
bool endVertexFlag = false;
#endregion
#region Dijkstra algorithm
double currentVertexDistance = 0;
ulong currentVertexDepth = 0;
double endVertexDistance = 0;
ulong endvertexDepth = 0;
Stopwatch clock = new Stopwatch();
clock.Start();
while (buf.Count != 0)
{
if (currentVertexDepth < maxDepth)
{
List <Tuple <ISingleEdge, IOutgoingEdgeDefinition> > AllsingleEdge = new List <Tuple <ISingleEdge, IOutgoingEdgeDefinition> >();
foreach (IOutgoingEdgeDefinition id in edgeTypeID.Keys)
{
var hyperEdge = currentVertex.GetOutgoingHyperEdge(id.ID);
if (hyperEdge != null)
{
var singleEdge = hyperEdge.GetAllEdges();
foreach (ISingleEdge value in singleEdge)
{
AllsingleEdge.Add(Tuple.Create(value, id));
}
}
}
if (AllsingleEdge != null)
{
for (int iCount = 0; iCount < AllsingleEdge.Count(); iCount++)
{
var elementSingleEdge = AllsingleEdge.ElementAt(iCount);
var TargetVertex = elementSingleEdge.Item1.GetTargetVertex();
double current_distance = 0;
if (edgeTypeID[elementSingleEdge.Item2].Item1 == true)
{
current_distance = Math.Abs(AllsingleEdge.ElementAt(iCount).Item1.GetProperty <double>(edgeTypeID[elementSingleEdge.Item2].Item2));
}
else
{
current_distance = 1;
}
var current_singleEdge = AllsingleEdge.ElementAt(iCount).Item1;
var TargetVertexID = lists.GetElement(TargetVertex.VertexID);
if (TargetVertexID == null)
{
if (!endVertexFlag)
{
buf.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
else
if (endVertexDistance > currentVertexDistance + current_distance ||
(endVertexDistance == currentVertexDistance + current_distance &&
endvertexDepth > currentVertexDepth + 1))
{
buf.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Add(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
}
else
{
if (currentVertexDistance + current_distance < TargetVertexID.Item2)
{
if (!endVertexFlag)
{
buf.Set(TargetVertexID.Item2, TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
else
if (endVertexDistance > currentVertexDistance + current_distance ||
(endVertexDistance == currentVertexDistance + current_distance &&
endvertexDepth > currentVertexDepth + 1))
{
buf.Set(TargetVertexID.Item2, TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
}
else if (currentVertexDistance + current_distance == TargetVertexID.Item2 && currentVertexDepth + 1 < TargetVertexID.Item3)
{
if (!endVertexFlag)
{
buf.Set(TargetVertexID.Item2, TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
else
if (endVertexDistance > currentVertexDistance + current_distance ||
(endVertexDistance == currentVertexDistance + current_distance &&
endvertexDepth > currentVertexDepth + 1))
{
buf.Set(TargetVertexID.Item2, TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1);
lists.Set(TargetVertex,
current_distance + currentVertexDistance,
currentVertexDepth + 1,
current_singleEdge,
elementSingleEdge.Item2,
currentVertex);
}
}
}
if (TargetVertex == endVertex)
{
endVertexFlag = true;
var endNode = lists.GetElement(endVertex.VertexID);
endVertexDistance = endNode.Item2;
endvertexDepth = endNode.Item3;
}
}
}
}
//delate from Buffer current Vertex or all
if (currentVertex == endVertex)
{
buf.Clear();
}
else
{
buf.Remove(currentVertexDistance, currentVertex.VertexID);
}
//Minimum distance from Buffer
if (buf.Count != 0)
{
var minVertex = buf.Min();
currentVertex = minVertex.Item1;
currentVertexDistance = minVertex.Item2;
currentVertexDepth = minVertex.Item3;
}
}
#endregion
clock.Stop();
#region create output
edgeBuffer.Add(null);
currentVertex = endVertex;
while (currentVertex != myStartVertex)
{
var current_tuple = lists.GetElement(currentVertex.VertexID);
if (current_tuple == null)
{
throw new InvalidFunctionParameterException("MaxDepth", "Max depth to low or end node is not with start node connected, find't end node", maxDepth);
}
VertexBuffer.Add(currentVertex);
distanceBuffer.Add(current_tuple.Item2);
depthBuffer.Add(current_tuple.Item3);
edgeBuffer.Add(current_tuple.Item4);
currentVertex = current_tuple.Item5;
}
depthBuffer.Add(0);
distanceBuffer.Add(0);
VertexBuffer.Add(myStartVertex);
edgeBuffer.Add(null);
var path = CreateVertexView(myPropertyID, VertexBuffer, distanceBuffer, edgeBuffer, depthBuffer);
#endregion
distanceBuffer = null;
VertexBuffer = null;
edgeBuffer = null;
depthBuffer = null;
buf.Clear();
lists.Clear();
buf = null;
lists = null;
return(new FuncParameter(path));
}
/// <summary>
/// Creates the request for the graphdb
/// </summary>
/// <returns>The created vertex</returns>
private RequestInsertVertex CreateRequest(GQLPluginManager myPluginManager,
IGraphDB myGraphDB,
SecurityToken mySecurityToken,
Int64 myTransactionToken)
{
#region data
var result = new RequestInsertVertex(_TypeName);
var vertexType = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_TypeName),
(stats, vtype) => vtype);
#endregion
if (_AttributeAssignList != null)
{
foreach (var aAttributeDefinition in _AttributeAssignList)
{
ProcessAAttributeDefinition(myPluginManager,
myGraphDB,
mySecurityToken,
myTransactionToken,
vertexType,
aAttributeDefinition,
ref result);
}
}
return result;
}
private void AddTypeAndAttributesRecursivly(ref IGraphDB myGraphDB, ref SecurityToken mySecurityToken, ref TransactionToken myTransactionToken, IVertexType type, ref HashSet<IVertexType> types)
{
if (!type.IsUserDefined) return;
if (type.HasParentType)
{
if (!types.Contains(type.ParentVertexType))
{
types.Add(type.ParentVertexType);
foreach (var attr in (type.GetAttributeDefinitions(false)).Where(attrDef => attrDef.Kind == AttributeType.Property))
{
var attrType = myGraphDB.GetVertexType<IVertexType>(mySecurityToken, myTransactionToken, new RequestGetVertexType(attr.ID), (stats, vertex) => vertex);
AddTypeAndAttributesRecursivly(ref myGraphDB, ref mySecurityToken, ref myTransactionToken, attrType, ref types);
}
}
//types.UnionWith(myDBContext.DBTypeManager.GetAllParentTypes(type, true, false));
}
}
public override QueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, TransactionToken myTransactionToken)
{
Stopwatch sw = Stopwatch.StartNew();
_query = myQuery;
QueryResult result = null;
String myAction = "";
List<IVertex> myToBeUpdatedVertices = new List<IVertex>();
//prepare
var vertexType = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_type),
(stats, vtype) => vtype);
if (_whereExpression != null)
{
//validate
_whereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
//calculate
var expressionGraph = _whereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
myToBeUpdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true).ToList();
}
switch (myToBeUpdatedVertices.Count)
{
case 0:
//insert
result = ProcessInsert(myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
myAction = "Inserted";
break;
case 1:
//delete
ProcessDelete(myToBeUpdatedVertices[0], myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
//insert
result = ProcessInsert(myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
myAction = "Replaced";
break;
default:
//error
throw new NotImplementedQLException("It's currenty not implemented to InsertOrReplace more than one vertex");
}
if (result.Error != null)
throw result.Error;
return GenerateResult(sw.ElapsedMilliseconds, result, myAction);
}
private RequestUpdate GenerateUpdateRequest(IGraphDB myGraphDB, GQLPluginManager myPluginManager, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
IEnumerable <IVertex> toBeupdatedVertices = null;
//prepare
var vertexType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_TypeName),
(stats, vtype) => vtype);
RequestUpdate result = null;
if (_vertexIDs == null)
{
if (_WhereExpression != null)
{
//validate
_WhereExpression.Validate(myPluginManager,
myGraphDB,
mySecurityToken,
myTransactionToken,
vertexType);
//calculate
var expressionGraph = _WhereExpression.Calculon(myPluginManager,
myGraphDB,
mySecurityToken,
myTransactionToken,
new CommonUsageGraph(myGraphDB,
mySecurityToken,
myTransactionToken),
false);
//extract
toBeupdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB,
mySecurityToken,
myTransactionToken),
null, true);
result = new RequestUpdate(
new RequestGetVertices(toBeupdatedVertices
.Select(_ => _.VertexTypeID)
.FirstOrDefault(),
toBeupdatedVertices.Select(_ => _.VertexID), false));
}
else
{
toBeupdatedVertices = myGraphDB.GetVertices <IEnumerable <IVertex> >(
mySecurityToken,
myTransactionToken,
new RequestGetVertices(vertexType.ID),
(stats, vertices) => vertices);
}
}
else
{
toBeupdatedVertices = _vertexIDs;
}
if (result == null)
{
result = new RequestUpdate(new RequestGetVertices(vertexType.ID,
toBeupdatedVertices
.Select(_ => _.VertexID),
false));
}
ProcessListOfUpdates(vertexType,
myPluginManager,
myGraphDB,
mySecurityToken,
myTransactionToken,
ref result);
return(result);
}
private RequestUpdate GenerateUpdateRequest(IGraphDB myGraphDB, GQLPluginManager myPluginManager, SecurityToken mySecurityToken, TransactionToken myTransactionToken)
{
IEnumerable<IVertex> toBeupdatedVertices = null;
//prepare
var vertexType = myGraphDB.GetVertexType<IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_TypeName),
(stats, vtype) => vtype);
if (_vertexIDs == null)
{
if (_WhereExpression != null)
{
//validate
_WhereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
//calculate
var expressionGraph = _WhereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
toBeupdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true);
}
else
{
toBeupdatedVertices = myGraphDB.GetVertices<IEnumerable<IVertex>>(
mySecurityToken,
myTransactionToken,
new RequestGetVertices(vertexType.ID),
(stats, vertices) => vertices);
}
}
else
{
toBeupdatedVertices = _vertexIDs;
}
var result = new RequestUpdate(new RequestGetVertices(vertexType.ID, toBeupdatedVertices.Select(_ => _.VertexID) , false));
ProcessListOfUpdates(vertexType, myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, ref result);
return result;
}
public override IQueryResult Execute(IGraphDB myGraphDB, IGraphQL myGraphQL, GQLPluginManager myPluginManager, String myQuery, SecurityToken mySecurityToken, Int64 myTransactionToken)
{
Stopwatch sw = Stopwatch.StartNew();
_query = myQuery;
IQueryResult result = null;
String myAction = "";
List <IVertex> myToBeUpdatedVertices = new List <IVertex>();
//prepare
var vertexType = myGraphDB.GetVertexType <IVertexType>(
mySecurityToken,
myTransactionToken,
new RequestGetVertexType(_type),
(stats, vtype) => vtype);
if (_whereExpression != null)
{
//validate
_whereExpression.Validate(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, vertexType);
//calculate
var expressionGraph = _whereExpression.Calculon(myPluginManager, myGraphDB, mySecurityToken, myTransactionToken, new CommonUsageGraph(myGraphDB, mySecurityToken, myTransactionToken), false);
//extract
myToBeUpdatedVertices = expressionGraph.Select(new LevelKey(vertexType.ID, myGraphDB, mySecurityToken, myTransactionToken), null, true).ToList();
}
switch (myToBeUpdatedVertices.Count)
{
case 0:
//insert
result = ProcessInsert(myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
myAction = "Inserted";
break;
case 1:
//delete
ProcessDelete(myToBeUpdatedVertices[0], myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
//insert
result = ProcessInsert(myGraphDB, myPluginManager, mySecurityToken, myTransactionToken);
myAction = "Replaced";
break;
default:
//error
throw new NotImplementedQLException("It's currenty not implemented to InsertOrReplace more than one vertex");
}
if (result.Error != null)
{
throw result.Error;
}
return(GenerateResult(sw.ElapsedMilliseconds, result, myAction));
}
