Example #1
0
func TestVersions(t *testing.T) {
	path, err := ioutil.TempDir("", "gocrudldb_")
	if err != nil {
		t.Fatal("Opening leveldb file")
		return
	}
	store.Get().Init(path) // leveldb

	c := req.NewContext(10)
	var d int
	for d = 660; d < 670; d++ {
		if err = store.NewUpdate("Ticker", "GOOG").SetSource("nasdaq").
			Set("price", d).Execute(c); err != nil {
			t.Errorf("When updating store: %+v", err)
			t.Fail()
		}
	}
	result, err := store.NewQuery("GOOG").Run()
	if err != nil {
		t.Errorf("When querying store: %+v", err)
		t.Fail()
	}
	versions, present := result.Columns["price"]
	if !present {
		t.Errorf("Column price should be present: %+v", result)
		t.Fail()
	}
	if versions.Count() != 10 {
		t.Errorf("Num count expected: 10. Got: %v", versions.Count())
	}
	if versions.Latest().Value.(float64) != 669 {
		t.Errorf("Latest value expected 669. Got: %v", versions.Latest())
	}
	if versions.Oldest().Value.(float64) != 660 {
		t.Errorf("Oldest value expected 660. Got: %v", versions.Oldest())
	}

	type jval struct {
		Kind   string `json:"kind,omitempty"`
		Id     string `json:"id,omitempty"`
		Source string `json:"modifier,omitempty"`
		Price  int    `json:"price,omitempty"`
	}
	js, err := result.ToJson()
	if err != nil {
		t.Errorf("While converting to JSON: %v", err)
	}
	t.Log(string(js))
	var jv jval
	if err = json.Unmarshal(js, &jv); err != nil {
		t.Errorf("While unmarshal to struct: %v", err)
	}
	if jv.Price != 669 {
		t.Errorf("Latest value expected 669. Got: %+v", jv)
	}
	if jv.Source != "nasdaq" {
		t.Errorf("Source expected nasdaq. Got: %+v", jv)
	}
}
Example #2
0
func ExampleStore() {
	path, err := ioutil.TempDir("", "gocrudldb_")
	if err != nil {
		x.LogErr(log, err).Fatal("Opening file")
		return
	}
	store.Get().Init(path) // leveldb

	// Update some data.
	c := req.NewContext(10) // 62^10 permutations
	err = store.NewUpdate("Root", "bigbang").SetSource("author").
		Set("when", "13.8 billion years ago").Set("explosive", true).Execute(c)
	if err != nil {
		x.LogErr(log, err).Fatal("Commiting update")
		return
	}

	// Retrieve that data
	result, err := store.NewQuery("bigbang").Run()
	if err != nil {
		x.LogErr(log, err).Fatal("While querying store")
		return
	}
	fmt.Println(result.Kind) // Root
	fmt.Println(result.Id)   // bigbang

	data := result.ToMap()
	{
		val, ok := data["explosive"]
		if !ok {
			log.Fatal("creator should be set")
			return
		}
		fmt.Println(val) // true
	}
	{
		val, ok := data["when"]
		if !ok {
			log.Fatal("creator should be set")
			return
		}
		fmt.Println(val)
	}
	// Output:
	// Root
	// bigbang
	// true
	// 13.8 billion years ago
}