public static GraphTraversal2 __()
{
GraphTraversal2 traversal = new GraphTraversal2();
traversal.AddOperator(new GremlinParentContextOp());
return(traversal);
}
internal void ConfigureStartAndEndSteps(GraphTraversal2 whereTraversal)
{
if (whereTraversal.TranslationOpList.Count >= 2)
{
//__.as()
GremlinAsOp asOp = whereTraversal.TranslationOpList[1] as GremlinAsOp;
if (asOp != null)
{
whereTraversal.TranslationOpList.RemoveAt(1); //remove as-step
whereTraversal.InsertOperator(1, new GremlinSelectOp(GremlinKeyword.Pop.Last, asOp.Labels.First()));
}
//__.Or()
GremlinOrOp orOp = whereTraversal.TranslationOpList[1] as GremlinOrOp;
if (orOp != null)
{
foreach (var traversal in orOp.OrTraversals)
{
ConfigureStartAndEndSteps(traversal);
}
}
//__.And()
GremlinAndOp andOp = whereTraversal.TranslationOpList[1] as GremlinAndOp;
if (andOp != null)
{
foreach (var traversal in andOp.AndTraversals)
{
ConfigureStartAndEndSteps(traversal);
}
}
//__.Not()
GremlinNotOp notOp = whereTraversal.TranslationOpList[1] as GremlinNotOp;
if (notOp != null)
{
ConfigureStartAndEndSteps(notOp.NotTraversal);
}
}
var lastOp = WhereTraversal.GetEndOp() as GremlinAsOp;
if (lastOp != null)
{
string label = lastOp.Labels.First();
whereTraversal.TranslationOpList.Remove(whereTraversal.GetEndOp()); //remove the last as-step
whereTraversal.AddOperator(new GremlinWherePredicateOp(Predicate.eq(label)));
}
}
public GraphTraversal2 Or(params GraphTraversal2[] orTraversals)
{
if (orTraversals.Length == 0)
{
//Infix And step
GraphTraversal2 firstTraversal = GraphTraversal2.__();
GraphTraversal2 secondTraversal = GraphTraversal2.__();
for (var i = 1; i < this.TranslationOpList.Count; i++)
{
firstTraversal.AddOperator(this.TranslationOpList[i].Copy());
}
this.TranslationOpList.RemoveRange(1, this.TranslationOpList.Count - 1);
this.AddOperator(new GremlinOrInfixOp(firstTraversal, secondTraversal));
}
else
{
this.AddOperator(new GremlinOrOp(orTraversals));
}
return(this);
}
public GraphTraversal2 And(params GraphTraversal2[] andTraversals)
{
if (andTraversals.Length == 0)
{
//Infix And step
GraphTraversal2 firstTraversal = GraphTraversal2.__();
GraphTraversal2 sencondTraversal = GraphTraversal2.__();
for (var i = 1; i < this.TranslationOpList.Count; i++) //reserve the first op as the input
{
firstTraversal.AddOperator(this.TranslationOpList[i].Copy());
}
this.TranslationOpList.RemoveRange(1, this.TranslationOpList.Count - 1);
this.AddOperator(new GremlinAndInfixOp(firstTraversal, sencondTraversal));
}
else
{
this.AddOperator(new GremlinAndOp(andTraversals));
}
return(this);
}