/Users/deen/code/yugabyte-db/src/yb/rocksdb/utilities/compaction_filters/remove_emptyvalue_compactionfilter.cc
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1 | | // Copyright (c) 2011-present, Facebook, Inc. All rights reserved. |
2 | | // This source code is licensed under the BSD-style license found in the |
3 | | // LICENSE file in the root directory of this source tree. An additional grant |
4 | | // of patent rights can be found in the PATENTS file in the same directory. |
5 | | // |
6 | | // The following only applies to changes made to this file as part of YugaByte development. |
7 | | // |
8 | | // Portions Copyright (c) YugaByte, Inc. |
9 | | // |
10 | | // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except |
11 | | // in compliance with the License. You may obtain a copy of the License at |
12 | | // |
13 | | // http://www.apache.org/licenses/LICENSE-2.0 |
14 | | // |
15 | | // Unless required by applicable law or agreed to in writing, software distributed under the License |
16 | | // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
17 | | // or implied. See the License for the specific language governing permissions and limitations |
18 | | // under the License. |
19 | | // |
20 | | |
21 | | #ifndef ROCKSDB_LITE |
22 | | |
23 | | #include <string> |
24 | | |
25 | | #include "yb/util/slice.h" |
26 | | #include "yb/rocksdb/utilities/compaction_filters/remove_emptyvalue_compactionfilter.h" |
27 | | |
28 | | namespace rocksdb { |
29 | | |
30 | 0 | const char* RemoveEmptyValueCompactionFilter::Name() const { |
31 | 0 | return "RemoveEmptyValueCompactionFilter"; |
32 | 0 | } |
33 | | |
34 | | FilterDecision RemoveEmptyValueCompactionFilter::Filter( |
35 | | int level, |
36 | | const Slice& key, |
37 | | const Slice& existing_value, |
38 | | std::string* new_value, |
39 | 0 | bool* value_changed) { |
40 | | |
41 | | // remove kv pairs that have empty values |
42 | 0 | return existing_value.empty() ? FilterDecision::kDiscard : FilterDecision::kKeep; |
43 | 0 | } |
44 | | |
45 | | } // namespace rocksdb |
46 | | #endif // !ROCKSDB_LITE |