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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "string_search_helper.h"
#include <vespa/vespalib/fuzzy/fuzzy_matching_algorithm.h>
namespace search { class QueryTermSimple; }
namespace search::attribute {
/*
* Class used to determine if an attribute vector string value is a match for
* the query string value.
*/
class StringMatcher
{
private:
std::unique_ptr<QueryTermUCS4> _query_term;
attribute::StringSearchHelper _helper;
public:
StringMatcher(std::unique_ptr<QueryTermSimple> qTerm, bool cased, vespalib::FuzzyMatchingAlgorithm fuzzy_matching_algorithm);
StringMatcher(StringMatcher&&) noexcept;
~StringMatcher();
protected:
bool isValid() const;
bool match(const char *src) const { return _helper.isMatch(src); }
bool isPrefix() const { return _helper.isPrefix(); }
bool isRegex() const { return _helper.isRegex(); }
bool isCased() const { return _helper.isCased(); }
bool isFuzzy() const { return _helper.isFuzzy(); }
const vespalib::Regex& getRegex() const { return _helper.getRegex(); }
const vespalib::FuzzyMatcher& getFuzzyMatcher() const { return _helper.getFuzzyMatcher(); }
const QueryTermUCS4* get_query_term_ptr() const noexcept { return _query_term.get(); }
template <typename DictionaryConstIteratorType>
bool is_fuzzy_match(const char* word, DictionaryConstIteratorType& itr, const DfaStringComparator::DataStoreType& data_store) const {
return _helper.is_fuzzy_match(word, itr, data_store);
}
};
}
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