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- // Copyright (c) 2014 Couchbase, Inc.
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
-
- package boltdb
-
- import (
- "github.com/blevesearch/bleve/index/store"
- bolt "go.etcd.io/bbolt"
- )
-
- type Reader struct {
- store *Store
- tx *bolt.Tx
- bucket *bolt.Bucket
- }
-
- func (r *Reader) Get(key []byte) ([]byte, error) {
- var rv []byte
- v := r.bucket.Get(key)
- if v != nil {
- rv = make([]byte, len(v))
- copy(rv, v)
- }
- return rv, nil
- }
-
- func (r *Reader) MultiGet(keys [][]byte) ([][]byte, error) {
- return store.MultiGet(r, keys)
- }
-
- func (r *Reader) PrefixIterator(prefix []byte) store.KVIterator {
- cursor := r.bucket.Cursor()
-
- rv := &Iterator{
- store: r.store,
- tx: r.tx,
- cursor: cursor,
- prefix: prefix,
- }
-
- rv.Seek(prefix)
- return rv
- }
-
- func (r *Reader) RangeIterator(start, end []byte) store.KVIterator {
- cursor := r.bucket.Cursor()
-
- rv := &Iterator{
- store: r.store,
- tx: r.tx,
- cursor: cursor,
- start: start,
- end: end,
- }
-
- rv.Seek(start)
- return rv
- }
-
- func (r *Reader) Close() error {
- return r.tx.Rollback()
- }
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