diff options
Diffstat (limited to 'storage/mroonga/lib/mrn_count_skip_checker.hpp')
| -rw-r--r-- | storage/mroonga/lib/mrn_count_skip_checker.hpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/storage/mroonga/lib/mrn_count_skip_checker.hpp b/storage/mroonga/lib/mrn_count_skip_checker.hpp new file mode 100644 index 00000000..8ea93cd3 --- /dev/null +++ b/storage/mroonga/lib/mrn_count_skip_checker.hpp @@ -0,0 +1,57 @@ +/* -*- c-basic-offset: 2 -*- */ +/* + Copyright(C) 2016 Kouhei Sutou <kou@clear-code.com> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA +*/ + +#ifndef MRN_COUNT_SKIP_CHECKER_HPP_ +#define MRN_COUNT_SKIP_CHECKER_HPP_ + +#include <mrn_mysql_compat.h> + +#include <item_cmpfunc.h> + +#include <groonga.h> + +namespace mrn { + class CountSkipChecker { + public: + CountSkipChecker(grn_ctx *ctx, + TABLE *table, + SELECT_LEX *select_lex, + KEY *key_info, + key_part_map target_key_part_map, + bool is_storage_mode); + ~CountSkipChecker(); + + bool check(); + + private: + grn_ctx *ctx_; + TABLE *table_; + SELECT_LEX *select_lex_; + KEY *key_info_; + key_part_map target_key_part_map_; + bool is_storage_mode_; + + bool is_skippable(Item *where); + bool is_skippable(Item_cond *cond_item); + bool is_skippable(Item_func *func_item); + bool is_skippable(Item_field *field_item); + }; +} + +#endif /* MRN_COUNT_SKIP_CHECKER_HPP_ */ |