public GremlinOptionalVariable(GremlinVariable inputVariable, GremlinToSqlContext context,
GremlinVariableType variableType) : base(variableType)
{
inputVariable.ProjectedProperties.Clear();
this.OptionalContext = context;
this.InputVariable = new GremlinContextVariable(inputVariable);
}
internal override GremlinToSqlContext GetContext()
{
if (InheritedContext != null)
{
return(InheritedContext);
}
GremlinToSqlContext newContext = new GremlinToSqlContext {
ParentContext = ParentContext
};
if (InheritedPivotVariable != null)
{
GremlinContextVariable newVariable = new GremlinContextVariable(InheritedPivotVariable);
newContext.VariableList.Add(newVariable);
newContext.SetPivotVariable(newVariable);
}
return(newContext);
}
internal override GremlinToSqlContext GetContext()
{
if (InheritedContext != null)
{
return(InheritedContext);
}
GremlinToSqlContext newContext = new GremlinToSqlContext();
newContext.PathList = InheritedPathList;
newContext.ParentContext = ParentContext;
if (InheritedPivotVariable != null)
{
GremlinContextVariable newVariable = GremlinContextVariable.Create(InheritedPivotVariable);
newVariable.HomeContext = newContext;
newContext.VariableList.Add(newVariable);
newContext.PivotVariable = newVariable;
}
return(newContext);
}
internal void OutV(GremlinVariable lastVariable)
{
if (lastVariable is GremlinFreeEdgeTableVariable)
{
var path = GetPathFromPathList(lastVariable);
if (path != null && path.SourceVariable != null)
{
if (IsVariableInCurrentContext(path.SourceVariable))
{
SetPivotVariable(path.SourceVariable);
}
else
{
GremlinContextVariable newContextVariable = GremlinContextVariable.Create(path.SourceVariable);
VariableList.Add(newContextVariable);
SetPivotVariable(newContextVariable);
}
}
else
{
GremlinVariableProperty sourceProperty = lastVariable.GetVariableProperty(GremlinKeyword.EdgeSourceV);
GremlinTableVariable outVertex = lastVariable.CreateAdjVertex(sourceProperty);
if (path != null)
{
path.SetSourceVariable(outVertex);
}
VariableList.Add(outVertex);
TableReferences.Add(outVertex);
SetPivotVariable(outVertex);
}
}
else
{
GremlinVariableProperty sourceProperty = lastVariable.GetVariableProperty(GremlinKeyword.EdgeSourceV);
GremlinTableVariable outVertex = new GremlinBoundVertexVariable(lastVariable.GetEdgeType(), sourceProperty);
VariableList.Add(outVertex);
TableReferences.Add(outVertex);
SetPivotVariable(outVertex);
}
}
internal List <GremlinVariable> SelectParent(string label, GremlinVariable stopVariable)
{
List <GremlinVariable> taggedVariableList = ParentContext?.SelectParent(label, HomeVariable);
if (taggedVariableList == null)
{
taggedVariableList = new List <GremlinVariable>();
}
var stopIndex = stopVariable == null ? VariableList.Count : VariableList.IndexOf(stopVariable);
for (var i = 0; i < stopIndex; i++)
{
if (VariableList[i].Labels.Contains(label))
{
taggedVariableList.Add(GremlinContextVariable.Create(VariableList[i]));
}
else
{
if (VariableList[i].ContainsLabel(label))
{
List <GremlinVariable> subContextVariableList = VariableList[i].PopulateAllTaggedVariable(label);
foreach (var subContextVar in subContextVariableList)
{
if (subContextVar is GremlinGhostVariable)
{
var ghostVar = subContextVar as GremlinGhostVariable;
var newGhostVar = GremlinGhostVariable.Create(ghostVar.RealVariable,
ghostVar.AttachedVariable, label);
taggedVariableList.Add(newGhostVar);
}
else
{
GremlinGhostVariable newVariable = GremlinGhostVariable.Create(subContextVar, VariableList[i], label);
taggedVariableList.Add(newVariable);
}
}
}
}
}
return(taggedVariableList);
}
