github.com/alexdevranger/node-1.8.27@v0.0.0-20221128213301-aa5841e41d2d/ethdb/table_batch.go (about) 1 // Copyright 2014 The go-ethereum Authors 2 // This file is part of the go-dubxcoin library. 3 // 4 // The go-dubxcoin library is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU Lesser General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // The go-dubxcoin library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU Lesser General Public License for more details. 13 // 14 // You should have received a copy of the GNU Lesser General Public License 15 // along with the go-dubxcoin library. If not, see <http://www.gnu.org/licenses/>. 16 17 package ethdb 18 19 type tableBatch struct { 20 batch Batch 21 prefix string 22 } 23 24 // NewTableBatch returns a Batch object which prefixes all keys with a given string. 25 func NewTableBatch(db Database, prefix string) Batch { 26 return &tableBatch{db.NewBatch(), prefix} 27 } 28 29 func (dt *table) NewBatch() Batch { 30 return &tableBatch{dt.db.NewBatch(), dt.prefix} 31 } 32 33 func (tb *tableBatch) Put(key, value []byte) error { 34 return tb.batch.Put(append([]byte(tb.prefix), key...), value) 35 } 36 37 func (tb *tableBatch) Delete(key []byte) error { 38 return tb.batch.Delete(append([]byte(tb.prefix), key...)) 39 } 40 41 func (tb *tableBatch) Write() error { 42 return tb.batch.Write() 43 } 44 45 func (tb *tableBatch) ValueSize() int { 46 return tb.batch.ValueSize() 47 } 48 49 func (tb *tableBatch) Reset() { 50 tb.batch.Reset() 51 }