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26 lines
867 B
26 lines
867 B
// Copyright (c) 2011 The LevelDB Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style license that can be |
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// found in the LICENSE file. See the AUTHORS file for names of contributors. |
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#ifndef STORAGE_LEVELDB_TABLE_MERGER_H_ |
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#define STORAGE_LEVELDB_TABLE_MERGER_H_ |
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namespace leveldb { |
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class Comparator; |
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class Iterator; |
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// Return an iterator that provided the union of the data in |
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// children[0,n-1]. Takes ownership of the child iterators and |
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// will delete them when the result iterator is deleted. |
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// |
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// The result does no duplicate suppression. I.e., if a particular |
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// key is present in K child iterators, it will be yielded K times. |
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// |
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// REQUIRES: n >= 0 |
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extern Iterator* NewMergingIterator( |
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const Comparator* comparator, Iterator** children, int n); |
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} // namespace leveldb |
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#endif // STORAGE_LEVELDB_TABLE_MERGER_H_
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