79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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// +build leveldb full
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package leveldb
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import (
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"github.com/jmhodges/levigo"
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)
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type Iterator struct {
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store *Store
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iterator *levigo.Iterator
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}
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func newIterator(store *Store) *Iterator {
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ropts := defaultReadOptions()
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rv := Iterator{
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store: store,
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iterator: store.db.NewIterator(ropts),
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}
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ropts.Close()
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return &rv
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}
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func newIteratorWithSnapshot(store *Store, snapshot *levigo.Snapshot) *Iterator {
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options := defaultReadOptions()
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options.SetSnapshot(snapshot)
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rv := Iterator{
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store: store,
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iterator: store.db.NewIterator(options),
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}
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options.Close()
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return &rv
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}
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func (ldi *Iterator) SeekFirst() {
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ldi.iterator.SeekToFirst()
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}
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func (ldi *Iterator) Seek(key []byte) {
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ldi.iterator.Seek(key)
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}
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func (ldi *Iterator) Next() {
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ldi.iterator.Next()
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}
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func (ldi *Iterator) Current() ([]byte, []byte, bool) {
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if ldi.Valid() {
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return ldi.Key(), ldi.Value(), true
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}
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return nil, nil, false
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}
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func (ldi *Iterator) Key() []byte {
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return ldi.iterator.Key()
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}
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func (ldi *Iterator) Value() []byte {
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return ldi.iterator.Value()
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}
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func (ldi *Iterator) Valid() bool {
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return ldi.iterator.Valid()
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}
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func (ldi *Iterator) Close() error {
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ldi.iterator.Close()
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return nil
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}
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