// Copyright (c) 2011 The LevelDB Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. See the AUTHORS file for names of contributors. #ifndef TENSORFLOW_LIB_IO_TWO_LEVEL_ITERATOR_H_ #define TENSORFLOW_LIB_IO_TWO_LEVEL_ITERATOR_H_ #include "tensorflow/core/lib/io/iterator.h" namespace tensorflow { namespace table { // Return a new two level iterator. A two-level iterator contains an // index iterator whose values point to a sequence of blocks where // each block is itself a sequence of key,value pairs. The returned // two-level iterator yields the concatenation of all key/value pairs // in the sequence of blocks. Takes ownership of "index_iter" and // will delete it when no longer needed. // // Uses a supplied function to convert an index_iter value into // an iterator over the contents of the corresponding block. extern Iterator* NewTwoLevelIterator( Iterator* index_iter, Iterator* (*block_function)(void* arg, const StringPiece& index_value), void* arg); } // namespace table } // namespace tensorflow #endif // TENSORFLOW_LIB_IO_TWO_LEVEL_ITERATOR_H_