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author | Kentoku SHIBA <kentokushiba@gmail.com> | 2014-09-21 00:33:45 +0900 |
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committer | Kentoku SHIBA <kentokushiba@gmail.com> | 2014-09-21 00:33:45 +0900 |
commit | 0cc855cdc8cd0baa6ba50662632b299a3843ff13 (patch) | |
tree | eaf50856703412b5c1c43f8c0e5a6a5318601c17 /storage/mroonga/lib/mrn_condition_converter.hpp | |
parent | 989dd4d9ec09450ff7b25987b14ee9fdfd21ad4e (diff) | |
download | mariadb-git-0cc855cdc8cd0baa6ba50662632b299a3843ff13.tar.gz |
Update Mroonga to the latest version on 2014-09-21T00:33:44+0900
Diffstat (limited to 'storage/mroonga/lib/mrn_condition_converter.hpp')
-rw-r--r-- | storage/mroonga/lib/mrn_condition_converter.hpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/storage/mroonga/lib/mrn_condition_converter.hpp b/storage/mroonga/lib/mrn_condition_converter.hpp new file mode 100644 index 00000000000..3cf97c62bbe --- /dev/null +++ b/storage/mroonga/lib/mrn_condition_converter.hpp @@ -0,0 +1,82 @@ +/* -*- c-basic-offset: 2 -*- */ +/* + Copyright(C) 2013 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 02110-1301 USA +*/ + +#ifndef MRN_CONDITION_CONVERTER_HPP_ +#define MRN_CONDITION_CONVERTER_HPP_ + +#include <groonga.h> +#include <mrn_mysql_compat.h> + +namespace mrn { + class ConditionConverter { + public: + ConditionConverter(grn_ctx *ctx, grn_obj *table, bool is_storage_mode); + ~ConditionConverter(); + + bool is_convertable(const Item *item); + const Item_func *find_match_against(const Item *item); + // caller must check "where" can be convertable by + // is_convertable(). This method doesn't validate "where". + void convert(const Item *where, grn_obj *expression); + + private: + enum NormalizedType { + STRING_TYPE, + INT_TYPE, + TIME_TYPE, + UNSUPPORTED_TYPE, + }; + + grn_ctx *ctx_; + grn_obj *table_; + bool is_storage_mode_; + grn_obj column_name_; + grn_obj value_; + + bool is_convertable(const Item_cond *cond_item); + bool is_convertable(const Item_func *func_item); + bool is_convertable_binary_operation(const Item_field *field_item, + Item *value_item, + Item_func::Functype func_type); + bool is_convertable_between(const Item_field *field_item, + Item *min_item, + Item *max_item); + bool is_valid_time_value(const Item_field *field_item, + Item *value_item); + bool get_time_value(const Item_field *field_item, + Item *value_item, + MYSQL_TIME *mysql_time); + bool have_index(const Item_field *field_item, grn_operator _operator); + bool have_index(const Item_field *field_item, Item_func::Functype func_type); + + NormalizedType normalize_field_type(enum_field_types field_type); + + void convert_binary_operation(const Item_func *func_item, + grn_obj *expression, + grn_operator _operator); + void convert_between(const Item_func *func_item, grn_obj *expression); + void append_field_value(const Item_field *field_item, + grn_obj *expression); + void append_const_item(const Item_field *field_item, + Item *const_item, + grn_obj *expression); + }; +} + +#endif /* MRN_CONDITION_CONVERTER_HPP_ */ |