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feat(issue search): query string for boolean operators and phrase search (#6952)

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closes #6909

related to forgejo/design#14

# Description

Adds the following boolean operators for issues when using an indexer (with minor caveats)

- `+term`: `term` MUST be present for any result
- `-term`: negation; exclude results that contain `term`
- `"this is a term"`: matches the exact phrase `this is a term`

In all cases the special characters may be escaped by the prefix `\`

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6952
Reviewed-by: 0ko <0ko@noreply.codeberg.org>
Reviewed-by: Otto <otto@codeberg.org>
Co-authored-by: Shiny Nematoda <snematoda.751k2@aleeas.com>
Co-committed-by: Shiny Nematoda <snematoda.751k2@aleeas.com>
This commit is contained in:
Shiny Nematoda 2025-02-23 08:35:35 +00:00 • committed by Earl Warren
parent eaa641c21e
commit cddf608cb9
19 changed files with 451 additions and 192 deletions
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43
modules/indexer/issues/bleve/bleve.go
View file

@ -156,25 +156,32 @@ func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
var queries []query.Query
if options.Keyword != "" {
if options.IsFuzzyKeyword {
fuzziness := 1
if kl := len(options.Keyword); kl > 3 {
fuzziness = 2
} else if kl < 2 {
fuzziness = 0
}
queries = append(queries, bleve.NewDisjunctionQuery([]query.Query{
inner_bleve.MatchQuery(options.Keyword, "title", issueIndexerAnalyzer, fuzziness),
inner_bleve.MatchQuery(options.Keyword, "content", issueIndexerAnalyzer, fuzziness),
inner_bleve.MatchQuery(options.Keyword, "comments", issueIndexerAnalyzer, fuzziness),
}...))
} else {
queries = append(queries, bleve.NewDisjunctionQuery([]query.Query{
inner_bleve.MatchPhraseQuery(options.Keyword, "title", issueIndexerAnalyzer, 0),
inner_bleve.MatchPhraseQuery(options.Keyword, "content", issueIndexerAnalyzer, 0),
inner_bleve.MatchPhraseQuery(options.Keyword, "comments", issueIndexerAnalyzer, 0),
}...))
tokens, err := options.Tokens()
if err != nil {
return nil, err
}
q := bleve.NewBooleanQuery()
for _, token := range tokens {
fuzziness := 0
if token.Fuzzy {
// TODO: replace with "auto" after bleve update
fuzziness = min(len(token.Term)/4, 2)
}
innerQ := bleve.NewDisjunctionQuery(
inner_bleve.MatchPhraseQuery(token.Term, "title", issueIndexerAnalyzer, fuzziness),
inner_bleve.MatchPhraseQuery(token.Term, "content", issueIndexerAnalyzer, fuzziness),
inner_bleve.MatchPhraseQuery(token.Term, "comments", issueIndexerAnalyzer, fuzziness))
switch token.Kind {
case internal.BoolOptMust:
q.AddMust(innerQ)
case internal.BoolOptShould:
q.AddShould(innerQ)
case internal.BoolOptNot:
q.AddMustNot(innerQ)
}
}
queries = append(queries, q)
}
if len(options.RepoIDs) > 0 || options.AllPublic {