func (ts *LevelDBTripleStore) OptimizeIterator(it graph.Iterator) (graph.Iterator, bool) {
	switch it.Type() {
	case "linksto":
		return ts.optimizeLinksTo(it.(*graph.LinksToIterator))

	}
	return it, false
}
示例#2
0
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()
			})
		})
	})

}