1/* -*- c-basic-offset: 2 -*- */
2/*
3 Copyright(C) 2016 Kouhei Sutou <kou@clear-code.com>
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18*/
19
20#ifndef MRN_COUNT_SKIP_CHECKER_HPP_
21#define MRN_COUNT_SKIP_CHECKER_HPP_
22
23#include <mrn_mysql_compat.h>
24
25#include <item_cmpfunc.h>
26
27#include <groonga.h>
28
29namespace mrn {
30 class CountSkipChecker {
31 public:
32 CountSkipChecker(grn_ctx *ctx,
33 TABLE *table,
34 SELECT_LEX *select_lex,
35 KEY *key_info,
36 key_part_map target_key_part_map,
37 bool is_storage_mode);
38 ~CountSkipChecker();
39
40 bool check();
41
42 private:
43 grn_ctx *ctx_;
44 TABLE *table_;
45 SELECT_LEX *select_lex_;
46 KEY *key_info_;
47 key_part_map target_key_part_map_;
48 bool is_storage_mode_;
49
50 bool is_skippable(Item *where);
51 bool is_skippable(Item_cond *cond_item);
52 bool is_skippable(Item_func *func_item);
53 bool is_skippable(Item_field *field_item);
54 };
55}
56
57#endif /* MRN_COUNT_SKIP_CHECKER_HPP_ */
58