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kvstore.go
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kvstore.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 store
type KVBatch interface {
Set(key, val []byte)
Delete(key []byte)
Merge(key, val []byte)
Execute() error
Close() error
}
type KVIterator interface {
SeekFirst()
Seek([]byte)
Next()
Current() ([]byte, []byte, bool)
Key() []byte
Value() []byte
Valid() bool
Close() error
}
type KVStore interface {
Open() error
SetMergeOperator(MergeOperator)
Writer() (KVWriter, error)
Reader() (KVReader, error)
Close() error
}
type KVWriter interface {
KVReader
Set(key, val []byte) error
Delete(key []byte) error
NewBatch() KVBatch
}
type KVReader interface {
BytesSafeAfterClose() bool
Get(key []byte) ([]byte, error)
Iterator(key []byte) KVIterator
Close() error
}