blob: 018d097b1f8a44f46eb5b9c58a3f8907fd4e0590 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
#pragma once
#include "rocksdb/merge_operator.h"
#include <stdio.h>
#include <memory>
#include <string>
namespace ROCKSDB_NAMESPACE {
class MergeOperators {
public:
static std::shared_ptr<MergeOperator> CreatePutOperator();
static std::shared_ptr<MergeOperator> CreateDeprecatedPutOperator();
static std::shared_ptr<MergeOperator> CreateUInt64AddOperator();
static std::shared_ptr<MergeOperator> CreateStringAppendOperator();
static std::shared_ptr<MergeOperator> CreateStringAppendOperator(char delim_char);
static std::shared_ptr<MergeOperator> CreateStringAppendTESTOperator();
static std::shared_ptr<MergeOperator> CreateMaxOperator();
static std::shared_ptr<MergeOperator> CreateBytesXOROperator();
static std::shared_ptr<MergeOperator> CreateSortOperator();
// Will return a different merge operator depending on the string.
// TODO: Hook the "name" up to the actual Name() of the MergeOperators?
static std::shared_ptr<MergeOperator> CreateFromStringId(
const std::string& name) {
if (name == "put") {
return CreatePutOperator();
} else if (name == "put_v1") {
return CreateDeprecatedPutOperator();
} else if ( name == "uint64add") {
return CreateUInt64AddOperator();
} else if (name == "stringappend") {
return CreateStringAppendOperator();
} else if (name == "stringappendtest") {
return CreateStringAppendTESTOperator();
} else if (name == "max") {
return CreateMaxOperator();
} else if (name == "bytesxor") {
return CreateBytesXOROperator();
} else if (name == "sortlist") {
return CreateSortOperator();
} else {
// Empty or unknown, just return nullptr
return nullptr;
}
}
};
} // namespace ROCKSDB_NAMESPACE
|
