RemoveEmptyValueCompactionFilter - A compaction filter which removes entries which have an empty value
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// Copyright (c) 2015, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#ifndef ROCKSDB_LITE |
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#include <string> |
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#include "rocksdb/slice.h" |
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#include "utilities/compaction_filters/remove_emptyvalue_compactionfilter.h" |
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namespace rocksdb { |
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const char* RemoveEmptyValueCompactionFilter::Name() const { |
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return "RemoveEmptyValueCompactionFilter"; |
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} |
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bool RemoveEmptyValueCompactionFilter::Filter(int level, |
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const Slice& key, |
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const Slice& existing_value, |
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std::string* new_value, |
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bool* value_changed) const { |
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// remove kv pairs that have empty values
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return existing_value.empty(); |
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} |
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} // namespace rocksdb
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#endif // !ROCKSDB_LITE
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// Copyright (c) 2015, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#ifndef ROCKSDB_LITE |
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#pragma once |
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#include <string> |
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#include "rocksdb/compaction_filter.h" |
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#include "rocksdb/slice.h" |
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namespace rocksdb { |
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class RemoveEmptyValueCompactionFilter : public CompactionFilter { |
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public: |
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const char* Name() const override; |
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bool Filter(int level, |
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const Slice& key, |
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const Slice& existing_value, |
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std::string* new_value, |
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bool* value_changed) const override; |
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}; |
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} // namespace rocksdb
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#endif // !ROCKSDB_LITE
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