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7 Commits
| Author | SHA1 | Message | Date | |
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Deluan Quintão
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ae9b8a5fe6
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feat(search): rank exact matches above prefix matches (#5704)
* feat(search): boost exact token matches over prefix matches buildFTS5Query now emits (word OR word*) instead of word* for plain tokens. The match set is unchanged (exact is a subset of prefix), but bm25 gives the rare exact token a high-IDF contribution, so rows containing the literal query word rank above prefix-only matches. The degraded-query check keeps evaluating the plain prefix form, preserving the LIKE fallback for queries like "1+" and "C++". * feat(search): weight artist search_normalized equal to name in bm25 For the artist table, search_normalized holds only the artist's name in alternate spelling (transliterated/punctuation-stripped), so a hit there is as meaningful as a name hit. Combined with exact-token boosting, artists like MØ now rank in the top results for the query "MO" instead of dead last. media_file and album keep weight 1.0 because their search_normalized mixes title, album, and artist variants. * test(persistence): add exact-match ranking regression test Seeds MØ, Morrissey, and Modest Mouse and asserts MØ ranks first for the queries "MO" and "MØ": the exact transliterated hit in search_normalized must outrank name-prefix matches. The corpus deliberately has no competing exact-word names, since exact-vs-exact ordering depends on corpus statistics rather than the guaranteed exact-over-prefix property. Rows are inserted per-test (with their library_artist associations) and cleaned up to avoid disturbing the shared seed fixtures and their count assertions. * docs(search): document exact-token OR emission in buildFTS5Query * test(persistence): harden exact-match ranking test fixtures Register the corpus cleanup before the insert loop so a mid-loop assertion failure cannot leak fts-rank-% rows into the shared integration DB, and reuse the existing createArtistWithLibrary helper instead of hand-rolling Put+AddArtist (which also replaces the ad-hoc context.TODO with the helper's GinkgoT().Context). * fix(search): flag multi-word degraded queries for the LIKE fallback The degradation probe was joined with explicit " AND " like the real query, so ftsQueryDegraded counted the literal AND as a long token and never flagged queries where every term degrades to a short token (e.g. "1+ 2+"). This predates this branch (the old code passed the same AND-joined string), but the probe now exists separately, so join it with spaces — it only feeds ftsQueryDegraded, which needs no explicit operators. |
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Deluan Quintão
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427d4b9bce
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fix(search): artists with atomic non-ASCII names unfindable after FTS5 migration (#5703)
* fix(scanner): update artist search_normalized when rescanning The FTS5 migration back-fills artist.search_normalized with a SQL punctuation-strip approximation, relying on the next scan to compute the precise value in Go (normalizeForFTS transliterates atomic letters like Ø/æ/ß that FTS5's remove_diacritics cannot fold). But the scanner persisted artists with an explicit column list that omitted search_normalized, so not even a full scan ever repaired it: an artist migrated from a pre-FTS database (e.g. "GØGGS") stayed unfindable by any ASCII search, while their albums and songs, which are saved with all columns, were fixed by a full scan. Add search_normalized to the column list so a full scan re-indexes the artist via the artist_fts trigger. * refactor(persistence): move normalizeForFTS to utils/str Export it as str.NormalizeForFTS so the upcoming migration can reuse the exact index-time normalization. Migrations cannot import the persistence package (persistence -> db -> db/migrations would be an import cycle). * fix(persistence): backfill artist search_normalized via migration Recompute artist.search_normalized with the precise Go normalization for databases migrated from pre-FTS5 versions, where the SQL back-fill could not transliterate atomic letters (Ø/æ/ß) and the scanner never rewrote the column. Only changed rows are updated, so the artist_fts update trigger re-indexes exactly the affected artists, making artists like GØGGS or MØ findable again without requiring a full scan. * refactor(persistence): share FTS punctuation-strip regex via utils/str Index-time normalization (NormalizeForFTS) and query-time processing (buildFTS5Query/ftsQueryDegraded) must produce matching tokens, so keep the punctuation-strip pattern in a single exported symbol instead of two identical private copies that could drift. Also document that derived columns computed in dbArtist.PostMapArgs must be listed in the scanner's artist Put, which is how search_normalized went stale in the first place. * chore(migrations): announce artist search backfill in the log Match the FTS5 migration's notice() pattern so startup isn't silent while the backfill runs on large libraries. * docs: tighten comments added in this branch * docs: describe FTSPunctStrip by what it matches, not one replacement |
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Deluan Quintão
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81a17f6bbb
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fix(search): normalization for non-NFKD Unicode letters (ø, æ, œ, ß) (#5413)
* fix(search): transliterate non-ASCII letters symmetrically in FTS5 path Songs and artists with letters like ø, æ, œ, ß were unsearchable. The query path in server/subsonic/searching.go transliterates with sanitize.Accents (Øystein → Oystein), but the FTS5 tokenizer's remove_diacritics 2 only strips NFKD-decomposable marks — atomic letters with built-in strokes/ligatures survive tokenization, so the query side and index side disagreed. Apply sanitize.Accents on both sides: - normalizeForFTS now also emits an ASCII-transliterated form for each word, so search_normalized contains the variant the query produces. - buildFTS5Query transliterates the unquoted portion of the input so every caller (Subsonic, REST fullTextFilter) gets the same handling. Quoted phrases stay as typed, preserving phrase matches against the original title/artist columns. Existing libraries pick up the fix as records are re-scanned; users can trigger a manual full rescan to refresh older entries. * fix(search): cache transliteration and add ß/quoted-phrase test coverage Address review feedback: call sanitize.Accents once per word and reuse the result for both the punct-stripped and accent-only paths. Add missing test entries for ß→ss transliteration and quoted Unicode phrase preservation. --------- Co-authored-by: Claude <noreply@anthropic.com> |
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Deluan
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ccee33f474 |
fix(search): use explicit AND in FTS5 queries to fix apostrophe search
FTS5's implicit AND (space-separated tokens) silently fails when combined
with parenthesized OR groups produced by processPunctuatedWords. For example,
searching "you've got" generated the query `("you ve" OR youve*) got*` which
returned no results. Using explicit AND (`("you ve" OR youve*) AND got*`)
resolves this FTS5 quirk. Since implicit and explicit AND are semantically
identical in FTS5, this change is safe for all queries unconditionally.
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Deluan Quintão
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b59eb32961
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feat(subsonic): sort search3 results by relevance (#5086)
* fix(subsonic): optimize search3 for high-cardinality FTS queries Use a two-phase query strategy for FTS5 searches to avoid the performance penalty of expensive LEFT JOINs (annotation, bookmark, library) on high-cardinality results like "the". Phase 1 runs a lightweight query (main table + FTS index only) to get sorted, paginated rowids. Phase 2 hydrates only those few rowids with the full JOINs, making them nearly free. For queries with complex ORDER BY expressions that reference joined tables (e.g. artist search sorted by play count), the optimization is skipped and the original single-query approach is used. * fix(search): update order by clauses to include 'rank' for FTS queries Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): reintroduce 'rank' in Phase 2 ORDER BY for FTS queries Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): remove 'rank' from ORDER BY in non-FTS queries and adjust two-phase query handling Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): update FTS ranking to use bm25 weights and simplify ORDER BY qualification Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): refine FTS query handling and improve comments for clarity Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): refactor full-text search handling to streamline query strategy selection and improve LIKE fallback logic. Increase e2e coverage for search3 Signed-off-by: Deluan <deluan@navidrome.org> * refactor: enhance FTS column definitions and relevance weights Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): refactor Search method signatures to remove offset and size parameters, streamline query handling Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): allow single-character queries in search strategies and update related tests Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): make FTS Phase 1 treat Max=0 as no limit, reorganize tests FTS Phase 1 unconditionally called Limit(uint64(options.Max)), which produced LIMIT 0 when Max was zero. This diverged from applyOptions where Max=0 means no limit. Now Phase 1 mirrors applyOptions: only add LIMIT/OFFSET when the value is positive. Also moved legacy backend integration tests from sql_search_fts_test.go to sql_search_like_test.go and added regression tests for the Max=0 behavior on both backends. * refactor: simplify callSearch function by removing variadic options and directly using QueryOptions Signed-off-by: Deluan <deluan@navidrome.org> * fix(search): implement ftsQueryDegraded function to detect significant content loss in FTS queries Signed-off-by: Deluan <deluan@navidrome.org> --------- Signed-off-by: Deluan <deluan@navidrome.org> |
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Deluan
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ec75808153 |
fix(subsonic): handle empty quoted phrases in FTS5 query and search expression
Signed-off-by: Deluan <deluan@navidrome.org> |
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Deluan Quintão
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54de0dbc52
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feat(server): implement FTS5-based full-text search (#5079)
* build: add sqlite_fts5 build tag to enable FTS5 support
* feat: add SearchBackend config option (default: fts)
* feat: add buildFTS5Query for safe FTS5 query preprocessing
* feat: add FTS5 search backend with config toggle, refactor legacy search
- Add searchExprFunc type and getSearchExpr() for backend selection
- Rename fullTextExpr to legacySearchExpr
- Add ftsSearchExpr using FTS5 MATCH subquery
- Update fullTextFilter in sql_restful.go to use configured backend
* feat: add FTS5 migration with virtual tables, triggers, and search_participants
Creates FTS5 virtual tables for media_file, album, and artist with
unicode61 tokenizer and diacritic folding. Adds search_participants
column, populates from JSON, and sets up INSERT/UPDATE/DELETE triggers.
* feat: populate search_participants in PostMapArgs for FTS5 indexing
* test: add FTS5 search integration tests
* fix: exclude FTS5 virtual tables from e2e DB restore
The restoreDB function iterates all tables in sqlite_master and
runs DELETE + INSERT to reset state. FTS5 contentless virtual tables
cannot be directly deleted from. Since triggers handle FTS5 sync
automatically, simply skip tables matching *_fts and *_fts_* patterns.
* build: add compile-time guard for sqlite_fts5 build tag
Same pattern as netgo: compilation fails with a clear error if
the sqlite_fts5 build tag is missing.
* build: add sqlite_fts5 tag to reflex dev server config
* build: extract GO_BUILD_TAGS variable in Makefile to avoid duplication
* fix: strip leading * from FTS5 queries to prevent "unknown special query" error
* feat: auto-append prefix wildcard to FTS5 search tokens for broader matching
Every plain search token now gets a trailing * appended (e.g., "love" becomes
"love*"), so searching for "love" also matches "lovelace", "lovely", etc.
Quoted phrases are preserved as exact matches without wildcards. Results are
ordered alphabetically by name/title, so shorter exact matches naturally
appear first.
* fix: clarify comments about FTS5 operator neutralization
The comments said "strip" but the code lowercases operators to
neutralize them (FTS5 operators are case-sensitive). Updated comments
to accurately describe the behavior.
* fix: use fmt.Sprintf for FTS5 phrase placeholders
The previous encoding used rune('0'+index) which silently breaks with
10+ quoted phrases. Use fmt.Sprintf for arbitrary index support.
* fix: validate and normalize SearchBackend config option
Normalize the value to lowercase and fall back to "fts" with a log
warning for unrecognized values. This prevents silent misconfiguration
from typos like "FTS", "Legacy", or "fts5".
* refactor: improve documentation for build tags and FTS5 requirements
Signed-off-by: Deluan <deluan@navidrome.org>
* refactor: convert FTS5 query and search backend normalization tests to DescribeTable format
Signed-off-by: Deluan <deluan@navidrome.org>
* fix: add sqlite_fts5 build tag to golangci configuration
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: add UISearchDebounceMs configuration option and update related components
Signed-off-by: Deluan <deluan@navidrome.org>
* fix: fall back to legacy search when SearchFullString is enabled
FTS5 is token-based and cannot match substrings within words, so
getSearchExpr now returns legacySearchExpr when SearchFullString
is true, regardless of SearchBackend setting.
* fix: add sqlite_fts5 build tag to CI pipeline and Dockerfile
* fix: add WHEN clauses to FTS5 AFTER UPDATE triggers
Added WHEN clauses to the media_file_fts_au, album_fts_au, and
artist_fts_au triggers so they only fire when FTS-indexed columns
actually change. Previously, every row update (e.g., play count, rating,
starred status) triggered an unnecessary delete+insert cycle in the FTS
shadow tables. The WHEN clauses use IS NOT for NULL-safe comparison of
each indexed column, avoiding FTS index churn for non-indexed updates.
* feat: add SearchBackend configuration option to data and insights components
Signed-off-by: Deluan <deluan@navidrome.org>
* fix: enhance input sanitization for FTS5 by stripping additional punctuation and special characters
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: add search_normalized column for punctuated name search (R.E.M., AC/DC)
Add index-time normalization and query-time single-letter collapsing to
fix FTS5 search for punctuated names. A new search_normalized column
stores concatenated forms of punctuated words (e.g., "R.E.M." → "REM",
"AC/DC" → "ACDC") and is indexed in FTS5 tables. At query time, runs of
consecutive single letters (from dot-stripping) are collapsed into OR
expressions like ("R E M" OR REM*) to match both the original tokens and
the normalized form. This enables searching by "R.E.M.", "REM", "AC/DC",
"ACDC", "A-ha", or "Aha" and finding the correct results.
* refactor: simplify isSingleUnicodeLetter to avoid []rune allocation
Use utf8.DecodeRuneInString to check for a single Unicode letter
instead of converting the entire string to a []rune slice.
* feat: define ftsSearchColumns for flexible FTS5 search column inclusion
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: update collapseSingleLetterRuns to return quoted phrases for abbreviations
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: implement extractPunctuatedWords to handle artist/album names with embedded punctuation
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: implement extractPunctuatedWords to handle artist/album names with embedded punctuation
Signed-off-by: Deluan <deluan@navidrome.org>
* refactor: punctuated word handling to improve processing of artist/album names
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: add CJK support for search queries with LIKE filters
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: enhance FTS5 search by adding album version support and CJK handling
Signed-off-by: Deluan <deluan@navidrome.org>
* refactor: search configuration to use structured options
Signed-off-by: Deluan <deluan@navidrome.org>
* feat: enhance search functionality to support punctuation-only queries and update related tests
Signed-off-by: Deluan <deluan@navidrome.org>
---------
Signed-off-by: Deluan <deluan@navidrome.org>
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