func runIteratorWithCallback(it graph.Iterator, ses *GremlinSession, callback otto.Value, this otto.FunctionCall, limit int) {
count := 0
it, _ = it.Optimize()
for {
if ses.doHalt {
return
}
_, ok := it.Next()
if !ok {
break
}
tags := make(map[string]graph.TSVal)
it.TagResults(&tags)
val, _ := this.Otto.ToValue(tagsToValueMap(tags, ses))
val, _ = callback.Call(this.This, val)
count++
if limit >= 0 && count >= limit {
break
}
for it.NextResult() == true {
if ses.doHalt {
return
}
tags := make(map[string]graph.TSVal)
it.TagResults(&tags)
val, _ := this.Otto.ToValue(tagsToValueMap(tags, ses))
val, _ = callback.Call(this.This, val)
count++
if limit >= 0 && count >= limit {
break
}
}
}
it.Close()
}
func runIteratorToArray(it graph.Iterator, ses *GremlinSession, limit int) []map[string]string {
output := make([]map[string]string, 0)
count := 0
it, _ = it.Optimize()
for {
if ses.doHalt {
return nil
}
_, ok := it.Next()
if !ok {
break
}
tags := make(map[string]graph.TSVal)
it.TagResults(&tags)
output = append(output, tagsToValueMap(tags, ses))
count++
if limit >= 0 && count >= limit {
break
}
for it.NextResult() == true {
if ses.doHalt {
return nil
}
tags := make(map[string]graph.TSVal)
it.TagResults(&tags)
output = append(output, tagsToValueMap(tags, ses))
count++
if limit >= 0 && count >= limit {
break
}
}
}
it.Close()
return output
}
func extractValuesFromIterator(ts graph.TripleStore, it graph.Iterator) []string {
var output []string
for {
val, ok := it.Next()
if !ok {
break
}
output = append(output, ts.GetNameFor(val))
}
return output
}
func extractTripleFromIterator(ts graph.TripleStore, it graph.Iterator) []string {
var output []string
for {
val, ok := it.Next()
if !ok {
break
}
output = append(output, ts.GetTriple(val).ToString())
}
return output
}
func runIteratorToArrayNoTags(it graph.Iterator, ses *GremlinSession, limit int) []string {
output := make([]string, 0)
count := 0
it, _ = it.Optimize()
for {
if ses.doHalt {
return nil
}
val, ok := it.Next()
if !ok {
break
}
output = append(output, ses.ts.GetNameFor(val))
count++
if limit >= 0 && count >= limit {
break
}
}
it.Close()
return output
}
func runIteratorOnSession(it graph.Iterator, ses *GremlinSession) {
if ses.lookingForQueryShape {
graph.OutputQueryShapeForIterator(it, ses.ts, &(ses.queryShape))
return
}
it, _ = it.Optimize()
glog.V(2).Infoln(it.DebugString(0))
for {
// TODO(barakmich): Better halting.
if ses.doHalt {
return
}
_, ok := it.Next()
if !ok {
break
}
tags := make(map[string]graph.TSVal)
it.TagResults(&tags)
cont := ses.SendResult(&GremlinResult{metaresult: false, err: "", val: nil, actualResults: &tags})
if !cont {
break
}
for it.NextResult() == true {
if ses.doHalt {
return
}
tags := make(map[string]graph.TSVal)
it.TagResults(&tags)
cont := ses.SendResult(&GremlinResult{metaresult: false, err: "", val: nil, actualResults: &tags})
if !cont {
break
}
}
}
it.Close()
}
func TestAllIterator(t *testing.T) {
var ts *LevelDBTripleStore
Convey("Given a prepared database", t, func() {
tmpDir, _ := ioutil.TempDir(os.TempDir(), "cayley_test")
t.Log(tmpDir)
defer os.RemoveAll(tmpDir)
ok := CreateNewLevelDB(tmpDir)
So(ok, ShouldBeTrue)
ts = NewDefaultLevelDBTripleStore(tmpDir, nil)
ts.AddTripleSet(makeTripleSet())
var it graph.Iterator
Convey("Can create an all iterator for nodes", func() {
it = ts.GetNodesAllIterator()
So(it, ShouldNotBeNil)
Convey("Has basics", func() {
size, accurate := it.Size()
So(size, ShouldBeBetween, 0, 20)
So(accurate, ShouldBeFalse)
So(it.Type(), ShouldEqual, "all")
re_it, ok := it.Optimize()
So(ok, ShouldBeFalse)
So(re_it, ShouldPointTo, it)
})
Convey("Iterates all nodes", func() {
expected := []string{
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"follows",
"status",
"cool",
"status_graph",
}
sort.Strings(expected)
actual := extractValuesFromIterator(ts, it)
sort.Strings(actual)
So(actual, ShouldResemble, expected)
it.Reset()
actual = extractValuesFromIterator(ts, it)
sort.Strings(actual)
So(actual, ShouldResemble, expected)
})
Convey("Contains a couple nodes", func() {
So(it.Check(ts.GetIdFor("A")), ShouldBeTrue)
So(it.Check(ts.GetIdFor("cool")), ShouldBeTrue)
//So(it.Check(ts.GetIdFor("baller")), ShouldBeFalse)
})
Reset(func() {
it.Reset()
})
})
Convey("Can create an all iterator for edges", func() {
it := ts.GetTriplesAllIterator()
So(it, ShouldNotBeNil)
Convey("Has basics", func() {
size, accurate := it.Size()
So(size, ShouldBeBetween, 0, 20)
So(accurate, ShouldBeFalse)
So(it.Type(), ShouldEqual, "all")
re_it, ok := it.Optimize()
So(ok, ShouldBeFalse)
So(re_it, ShouldPointTo, it)
})
Convey("Iterates an edge", func() {
edge_val, _ := it.Next()
triple := ts.GetTriple(edge_val)
set := makeTripleSet()
var string_set []string
for _, t := range set {
string_set = append(string_set, t.ToString())
}
So(triple.ToString(), ShouldBeIn, string_set)
})
Reset(func() {
ts.Close()
})
})
})
}