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Exposed Except (alias Difference) operator in Gremlin API.

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This commit is contained in:
Matei Chiperi 2014-08-27 14:48:30 -07:00
parent 5d4e22498d
commit def70ca12e
2 changed files with 14 additions and 8 deletions
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19
query/gremlin/build_iterator.go
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@ -299,14 +299,19 @@ func buildIteratorTreeHelper(obj *otto.Object, ts graph.TripleStore, base graph.
case "in":
it = buildInOutIterator(obj, ts, subIt, true)
case "not":
// arg, _ := obj.Get("_gremlin_values")
// firstArg, _ := arg.Object().Get("0")
// if !isVertexChain(firstArg.Object()) {
// return iterator.NewNull()
// }
// forbiddenIt := buildIteratorTree(firstArg.Object(), ts)
arg, _ := obj.Get("_gremlin_values")
firstArg, _ := arg.Object().Get("0")
if !isVertexChain(firstArg.Object()) {
return iterator.NewNull()
}
it = iterator.NewNot(ts, subIt)
toComplementIt := buildIteratorTree(firstArg.Object(), ts)
notIt := iterator.NewNot(ts, toComplementIt)
and := iterator.NewAnd()
and.AddSubIterator(subIt)
and.AddSubIterator(notIt)
it = and
case "loop":
arg, _ := obj.Get("_gremlin_values")
firstArg, _ := arg.Object().Get("0")

3
query/gremlin/traversals.go
View file

@ -39,7 +39,8 @@ func (wk *worker) embedTraversals(env *otto.Otto, obj *otto.Object) {
obj.Set("Save", wk.gremlinFunc("save", obj, env))
obj.Set("SaveR", wk.gremlinFunc("saver", obj, env))
obj.Set("Loop", wk.gremlinFunc("loop", obj, env))
obj.Set("Not", wk.gremlinFunc("not", obj, env))
obj.Set("Except", wk.gremlinFunc("not", obj, env))
obj.Set("Difference", wk.gremlinFunc("not", obj, env))
}
func (wk *worker) gremlinFunc(kind string, prev *otto.Object, env *otto.Otto) func(otto.FunctionCall) otto.Value {