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author | Jason Rassi <rassi@10gen.com> | 2015-11-18 17:31:32 -0500 |
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committer | Jason Rassi <rassi@10gen.com> | 2015-11-18 17:38:27 -0500 |
commit | 23136883e394b73cbc26f873cd0276779adef3df (patch) | |
tree | b53259aeeaeb8a7e7450796dec662157d9b0a44d /src/mongo/db/fts/fts_query.h | |
parent | 7bac6c8f64019082f205c7606c65f173972960a3 (diff) | |
download | mongo-23136883e394b73cbc26f873cd0276779adef3df.tar.gz |
SERVER-19510 Move text query parsing to TextMatchExpression::init()
- Introduces FTSQuery, which is now the base class for FTSQueryImpl.
- Introduces a derived class FTSQueryNoop (which
TextNoOpMatchExpression now wraps). libfts_query_noop is now linked
into db/matcher/expressions.
- TextMatchExpression now parses the text query (which acquires a
collection lock as part of the parsing process), and TextNode now
stores a parsed version of the query. The FTSQuery::parse() call in
buildStages() is removed.
Behavior change: $text against a non-existent collection now returns
an error, instead of an empty result set.
Diffstat (limited to 'src/mongo/db/fts/fts_query.h')
-rw-r--r-- | src/mongo/db/fts/fts_query.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/mongo/db/fts/fts_query.h b/src/mongo/db/fts/fts_query.h new file mode 100644 index 00000000000..c2b2fd87deb --- /dev/null +++ b/src/mongo/db/fts/fts_query.h @@ -0,0 +1,107 @@ +/** + * Copyright (C) 2015 MongoDB Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * This program 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 Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * As a special exception, the copyright holders give permission to link the + * code of portions of this program with the OpenSSL library under certain + * conditions as described in each individual source file and distribute + * linked combinations including the program with the OpenSSL library. You + * must comply with the GNU Affero General Public License in all respects for + * all of the code used other than as permitted herein. If you modify file(s) + * with this exception, you may extend this exception to your version of the + * file(s), but you are not obligated to do so. If you do not wish to do so, + * delete this exception statement from your version. If you delete this + * exception statement from all source files in the program, then also delete + * it in the license file. + */ + +#pragma once + +#include <string> + +#include "mongo/db/fts/fts_util.h" + +namespace mongo { +namespace fts { + +/** + * An FTSQuery represents a parsed text search query. + */ +class FTSQuery { +public: + virtual ~FTSQuery() {} + + void setQuery(std::string query) { + _query = std::move(query); + } + + void setLanguage(std::string language) { + _language = std::move(language); + } + + void setCaseSensitive(bool caseSensitive) { + _caseSensitive = caseSensitive; + } + + void setDiacriticSensitive(bool diacriticSensitive) { + _diacriticSensitive = diacriticSensitive; + } + + const std::string& getQuery() const { + return _query; + } + + const std::string& getLanguage() const { + return _language; + } + + bool getCaseSensitive() const { + return _caseSensitive; + } + + bool getDiacriticSensitive() const { + return _diacriticSensitive; + } + + /** + * Returns true iff '*this' and 'other' have the same unparsed form. + */ + bool equivalent(const FTSQuery& other) const { + return _query == other._query && _language == other._language && + _caseSensitive == other._caseSensitive && + _diacriticSensitive == other._diacriticSensitive; + } + + /** + * Parses the text search query. Before parsing, the FTSQuery needs to be initialized with + * the set*() methods above. + * + * Returns Status::OK() if parsing was successful; returns an error Status otherwise. + */ + virtual Status parse(TextIndexVersion textIndexVersion) = 0; + + /** + * Returns a copy of this FTSQuery. + */ + virtual std::unique_ptr<FTSQuery> clone() const = 0; + +private: + std::string _query; + std::string _language; + bool _caseSensitive = false; + bool _diacriticSensitive = false; +}; + +} // namespace fts +} // namespace mongo |