73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
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// Copyright (c) 2015 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the
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// 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,
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// software distributed under the License is distributed on an "AS
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// IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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// express or implied. See the License for the specific language
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// governing permissions and limitations under the License.
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// Package gtreap provides an in-memory implementation of the
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// KVStore interfaces using the gtreap balanced-binary treap,
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// copy-on-write data structure.
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package gtreap
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import (
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"math/rand"
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"github.com/blevesearch/bleve/index/store"
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)
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func (w *Writer) BytesSafeAfterClose() bool {
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return false
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}
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func (w *Writer) Get(k []byte) (v []byte, err error) {
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w.s.m.Lock()
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t := w.s.t
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w.s.m.Unlock()
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itm := t.Get(&Item{k: k})
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if itm != nil {
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return itm.(*Item).v, nil
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}
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return nil, nil
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}
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func (w *Writer) Iterator(k []byte) store.KVIterator {
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w.s.m.Lock()
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t := w.s.t
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w.s.m.Unlock()
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return newIterator(t).restart(&Item{k: k})
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}
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func (w *Writer) Close() error {
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w.s.availableWriters <- true
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w.s = nil
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return nil
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}
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func (w *Writer) Set(k, v []byte) (err error) {
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w.s.m.Lock()
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w.s.t = w.s.t.Upsert(&Item{k: k, v: v}, rand.Int())
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w.s.m.Unlock()
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return nil
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}
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func (w *Writer) Delete(k []byte) (err error) {
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w.s.m.Lock()
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w.s.t = w.s.t.Delete(&Item{k: k})
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w.s.m.Unlock()
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return nil
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}
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func (w *Writer) NewBatch() store.KVBatch {
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return store.NewEmulatedBatch(w, w.s.mo)
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}
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