public object Serialize(IGremlinQueryBase query)
{
(_stepLabelNames ??= new Dictionary <StepLabel, string>()).Clear();
return(_fragmentSerializer
.Serialize(query, query.AsAdmin().Environment));
}
public IGremlinQueryBase Apply(IGremlinQueryBase query)
{
var environment = query.AsAdmin().Environment;
var anonymous = GremlinQuery.Anonymous(environment);
var vertexCriterionTraversal = _vertexCriterion(anonymous.AsAdmin().ChangeQueryType <IVertexGremlinQuery <object> >());
var edgeCriterionTraversal = _edgeCriterion(anonymous.AsAdmin().ChangeQueryType <IEdgeGremlinQuery <object> >());
if (vertexCriterionTraversal.AsAdmin().Steps.Count > 0 || edgeCriterionTraversal.AsAdmin().Steps.Count > 0)
{
var strategy = GremlinQuery.Create <object>(environment)
.AddStep(BuildStep.Instance);
if (vertexCriterionTraversal.AsAdmin().Steps.Count > 0)
{
strategy = strategy.AddStep(new VerticesStep(vertexCriterionTraversal));
}
if (edgeCriterionTraversal.AsAdmin().Steps.Count > 0)
{
strategy = strategy.AddStep(new EdgesStep(edgeCriterionTraversal));
}
return(query
.AddStep(new WithStrategiesStep(strategy.AddStep(CreateStep.Instance))));
}
return(query);
}
public IAsyncEnumerable <TElement> Execute <TElement>(IGremlinQueryBase <TElement> query)
{
var serialized = Serializer
.Serialize(query);
if (serialized == null)
{
return(AsyncEnumerableEx.Throw <TElement>(new Exception("Can't serialize query.")));
}
return(Executor
.Execute(serialized)
.SelectMany(executionResult => Deserializer
.Deserialize <TElement>(executionResult, query.AsAdmin().Environment)));
}
internal static Traversal ToTraversal(this IGremlinQueryBase query)
{
return(query.AsAdmin().ToTraversal());
}
internal static bool IsIdentity(this IGremlinQueryBase query)
{
return(query.AsAdmin().Steps.IsEmpty);
}
internal static bool IsNone(this IGremlinQueryBase query)
{
return(query.AsAdmin().Steps.PeekOrDefault() is NoneStep);
}
internal static IGremlinQueryBase AddStep(this IGremlinQueryBase query, Step step)
{
return(query.AsAdmin().InsertStep(query.AsAdmin().Steps.Count, step));
}
internal static Traversal ToTraversal(this IGremlinQueryBase query) => query .AsAdmin().Steps;