52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
|
// Copyright 2014 The go-ethereum Authors
|
||
|
|
// This file is part of the go-ethereum library.
|
||
|
|
//
|
||
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
||
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
// the Free Software Foundation, either version 3 of the License, or
|
||
|
|
// (at your option) any later version.
|
||
|
|
//
|
||
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
||
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
// GNU Lesser General Public License for more details.
|
||
|
|
//
|
||
|
|
// You should have received a copy of the GNU Lesser General Public License
|
||
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
package ethdb
|
||
|
|
|
||
|
|
type table struct {
|
||
|
|
db Database
|
||
|
|
prefix string
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewTable returns a Database object that prefixes all keys with a given
|
||
|
|
// string.
|
||
|
|
func NewTable(db Database, prefix string) Database {
|
||
|
|
return &table{
|
||
|
|
db: db,
|
||
|
|
prefix: prefix,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (dt *table) Put(key []byte, value []byte) error {
|
||
|
|
return dt.db.Put(append([]byte(dt.prefix), key...), value)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (dt *table) Has(key []byte) (bool, error) {
|
||
|
|
return dt.db.Has(append([]byte(dt.prefix), key...))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (dt *table) Get(key []byte) ([]byte, error) {
|
||
|
|
return dt.db.Get(append([]byte(dt.prefix), key...))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (dt *table) Delete(key []byte) error {
|
||
|
|
return dt.db.Delete(append([]byte(dt.prefix), key...))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (dt *table) Close() {
|
||
|
|
// Do nothing; don't close the underlying DB.
|
||
|
|
}
|