54ab493b3e
- this is part of a recent bleve KVStore API change.
See the following two google group threads for more details:
* [help adding goleveldb as an alternative Key/Value store for bleve][1]
* [bleve search performance improvement][2]
[1]: https://groups.google.com/forum/#!topic/bleve/aHZ8gmihLiY
[2]: https://groups.google.com/forum/#!topic/bleve/aTyqsSnbhik
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
// 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 goleveldb
|
|
|
|
import (
|
|
"github.com/blevesearch/bleve/index/store"
|
|
"github.com/syndtr/goleveldb/leveldb"
|
|
)
|
|
|
|
type Reader struct {
|
|
store *Store
|
|
snapshot *leveldb.Snapshot
|
|
}
|
|
|
|
func newReader(store *Store) (*Reader, error) {
|
|
snapshot, _ := store.db.GetSnapshot()
|
|
return &Reader{
|
|
store: store,
|
|
snapshot: snapshot,
|
|
}, nil
|
|
}
|
|
|
|
func (r *Reader) BytesSafeAfterClose() bool {
|
|
return true
|
|
}
|
|
|
|
func (r *Reader) Get(key []byte) ([]byte, error) {
|
|
return r.store.getWithSnapshot(key, r.snapshot)
|
|
}
|
|
|
|
func (r *Reader) Iterator(key []byte) store.KVIterator {
|
|
rv := newIteratorWithSnapshot(r.store, r.snapshot)
|
|
rv.Seek(key)
|
|
return rv
|
|
}
|
|
|
|
func (r *Reader) Close() error {
|
|
r.snapshot.Release()
|
|
return nil
|
|
}
|