47 lines
1.1 KiB
Ruby
47 lines
1.1 KiB
Ruby
module Gitlab
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module SQL
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module Pattern
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extend ActiveSupport::Concern
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MIN_CHARS_FOR_PARTIAL_MATCHING = 3
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REGEX_QUOTED_WORD = /(?<=^| )"[^"]+"(?= |$)/
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class_methods do
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def to_pattern(query)
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if partial_matching?(query)
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"%#{sanitize_sql_like(query)}%"
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else
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sanitize_sql_like(query)
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end
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end
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def partial_matching?(query)
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query.length >= MIN_CHARS_FOR_PARTIAL_MATCHING
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end
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def fuzzy_arel_match(column, query)
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words = select_fuzzy_words(query)
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matches = words.map { |word| arel_table[column].matches(to_pattern(word)) }
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matches.reduce { |result, match| result.and(match) }
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end
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def select_fuzzy_words(query)
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quoted_words = query.scan(REGEX_QUOTED_WORD)
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query = quoted_words.reduce(query) { |q, quoted_word| q.sub(quoted_word, '') }
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words = query.split(/\s+/)
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quoted_words.map! { |quoted_word| quoted_word[1..-2] }
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words.concat(quoted_words)
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words.select { |word| partial_matching?(word) }
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end
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end
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end
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end
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end
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