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74 lines
1.5 KiB
74 lines
1.5 KiB
// Copyright (c) 2014 Couchbase, Inc.
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//
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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 License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package boltdb
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import (
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store "github.com/blevesearch/upsidedown_store_api"
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bolt "go.etcd.io/bbolt"
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)
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type Reader struct {
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store *Store
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tx *bolt.Tx
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bucket *bolt.Bucket
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}
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func (r *Reader) Get(key []byte) ([]byte, error) {
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var rv []byte
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v := r.bucket.Get(key)
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if v != nil {
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rv = make([]byte, len(v))
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copy(rv, v)
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}
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return rv, nil
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}
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func (r *Reader) MultiGet(keys [][]byte) ([][]byte, error) {
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return store.MultiGet(r, keys)
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}
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func (r *Reader) PrefixIterator(prefix []byte) store.KVIterator {
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cursor := r.bucket.Cursor()
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rv := &Iterator{
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store: r.store,
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tx: r.tx,
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cursor: cursor,
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prefix: prefix,
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}
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rv.Seek(prefix)
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return rv
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}
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func (r *Reader) RangeIterator(start, end []byte) store.KVIterator {
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cursor := r.bucket.Cursor()
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rv := &Iterator{
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store: r.store,
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tx: r.tx,
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cursor: cursor,
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start: start,
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end: end,
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}
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rv.Seek(start)
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return rv
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}
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func (r *Reader) Close() error {
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return r.tx.Rollback()
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}
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