forked from blevesearch/bleve
/
reader.go
47 lines (39 loc) · 1.27 KB
/
reader.go
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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 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 false
}
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
}