本文整理汇总了Golang中github.com/conformal/goleveldb/leveldb/iterator.Iterator类的典型用法代码示例。如果您正苦于以下问题：Golang Iterator类的具体用法？Golang Iterator怎么用？Golang Iterator使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Iterator类的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: eoi
func (h *blockHarness) eoi(pref string, iter iterator.Iterator) {
if iter.Next() {
h.t.Fatalf("block: %sNext: expect eoi", pref)
} else if err := iter.Error(); err != nil {
h.t.Fatalf("block: %sNext: expect eoi but got error, err=%v", pref, err)
}
}示例2: createFrom
// Builds table from src iterator.
func (t *tOps) createFrom(src iterator.Iterator) (f *tFile, n int, err error) {
w, err := t.create()
if err != nil {
return f, n, err
}
defer func() {
if err != nil {
w.drop()
}
}()
for src.Next() {
err = w.append(src.Key(), src.Value())
if err != nil {
return
}
}
err = src.Error()
if err != nil {
return
}
n = w.tw.EntriesLen()
f, err = w.finish()
return
}示例3: testKV
func (h *blockHarness) testKV(act string, iter iterator.Iterator, i int) {
key, value := h.kv[i], h.kv[i+1]
if !bytes.Equal(iter.Key(), key) {
h.t.Fatalf("block: %s: key invalid, want=%q got=%q", act, key, iter.Key())
}
if !bytes.Equal(iter.Value(), value) {
h.t.Fatalf("block: %s: value invalid, want=%q got=%q", act, value, iter.Value())
}
}示例4: last
func (h *blockHarness) last(iter iterator.Iterator) {
if len(h.kv) == 0 {
if iter.Last() {
h.t.Fatalf("block: Last: expect eoi, key=%q", iter.Key())
}
} else {
if !iter.Last() {
h.t.Fatalf("block: Last: eoi, err=%v", iter.Error())
}
}
}示例5: TestDb_ClosedIsClosed
func TestDb_ClosedIsClosed(t *testing.T) {
h := newDbHarness(t)
db := h.db
var iter, iter2 iterator.Iterator
var snap *Snapshot
func() {
defer h.close()
h.put("k", "v")
h.getVal("k", "v")
iter = db.NewIterator(nil, h.ro)
iter.Seek([]byte("k"))
testKeyVal(t, iter, "k->v")
var err error
snap, err = db.GetSnapshot()
if err != nil {
t.Fatal("GetSnapshot: got error: ", err)
}
h.getValr(snap, "k", "v")
iter2 = snap.NewIterator(nil, h.ro)
iter2.Seek([]byte("k"))
testKeyVal(t, iter2, "k->v")
h.put("foo", "v2")
h.delete("foo")
// closing DB
iter.Release()
iter2.Release()
}()
assertErr(t, db.Put([]byte("x"), []byte("y"), h.wo), true)
_, err := db.Get([]byte("k"), h.ro)
assertErr(t, err, true)
if iter.Valid() {
t.Errorf("iter.Valid should false")
}
assertErr(t, iter.Error(), false)
testKeyVal(t, iter, "->")
if iter.Seek([]byte("k")) {
t.Errorf("iter.Seek should false")
}
assertErr(t, iter.Error(), true)
assertErr(t, iter2.Error(), false)
_, err = snap.Get([]byte("k"), h.ro)
assertErr(t, err, true)
_, err = db.GetSnapshot()
assertErr(t, err, true)
iter3 := db.NewIterator(nil, h.ro)
assertErr(t, iter3.Error(), true)
iter3 = snap.NewIterator(nil, h.ro)
assertErr(t, iter3.Error(), true)
assertErr(t, db.Delete([]byte("k"), h.wo), true)
_, err = db.GetProperty("leveldb.stats")
assertErr(t, err, true)
_, err = db.SizeOf([]util.Range{{[]byte("a"), []byte("z")}})
assertErr(t, err, true)
assertErr(t, db.CompactRange(util.Range{}), true)
assertErr(t, db.Close(), true)
}示例6: prev
func (h *blockHarness) prev(pref string, iter iterator.Iterator) {
if !iter.Prev() {
h.t.Fatalf("block: %sPrev: eoi, err=%v", pref, iter.Error())
}
}示例7: next
func (h *blockHarness) next(pref string, iter iterator.Iterator) {
if !iter.Next() {
h.t.Fatalf("block: %sNext: eoi, err=%v", pref, iter.Error())
}
}