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/* -*- 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_ */
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