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batch.go
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batch.go
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package db
import (
"github.com/syndtr/goleveldb/leveldb"
"github.com/syndtr/goleveldb/leveldb/iterator"
"github.com/syndtr/goleveldb/leveldb/opt"
"github.com/syndtr/goleveldb/leveldb/util"
)
type readerWithBatchWriter struct {
reader dbReader
batch *leveldb.Batch
}
func newReaderWithBatchWriter(reader dbReader) *readerWithBatchWriter {
return &readerWithBatchWriter{
reader: reader,
batch: &leveldb.Batch{},
}
}
var _ dbReadWriter = &readerWithBatchWriter{}
func (readWriter *readerWithBatchWriter) Get(key []byte, ro *opt.ReadOptions) ([]byte, error) {
return readWriter.reader.Get(key, ro)
}
func (readWriter *readerWithBatchWriter) NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
return readWriter.reader.NewIterator(slice, ro)
}
func (readWriter *readerWithBatchWriter) Has(key []byte, ro *opt.ReadOptions) (bool, error) {
return readWriter.reader.Has(key, ro)
}
func (readWriter *readerWithBatchWriter) Delete(key []byte, wo *opt.WriteOptions) error {
readWriter.batch.Delete(key)
return nil
}
func (readWriter *readerWithBatchWriter) Put(key, value []byte, wo *opt.WriteOptions) error {
readWriter.batch.Put(key, value)
return nil
}