Previously MultiQuery only accepted vector sub-queries by using
get_vector_field() to look up each sub-query's field. FTS sub-queries
(whose field_name points to an FTS-indexed string column) would fail
with "Vector field not found".
Changes:
- collection.cc: use get_field() uniformly in MultiQuery path; let
validate_and_sanitize() check type compatibility internally, which
is consistent with the single-query path.
- query_executor.py: allow SingleVectorQueryExecutor to accept
multi-query when it contains an FTS query (with reranker), and route
to C++ MultiQuery fast path.
- Add test_collection_fts_vector_hybrid.py covering hybrid retrieval
ranking, scoring, filter, validation, and edge cases.
* feat: migrate multi-vector query and reranker logic to C++
- Add Reranker base class with RrfReRanker and WeightedReRanker implementations
- Add Collection::MultiQuery interface for multi-vector queries with reranking
- Add MultiVectorQuery struct in doc.h with forward declaration for Reranker
- Add C API bindings for reranker and MultiQuery (zvec_reranker_*, zvec_multi_vector_query_*, zvec_collection_multi_query)
- Add Python binding for reranker classes with py::function bridge for callback
- Validate duplicate field names in multi-vector queries (C++ and Python consistent)
- Remove TODO comment about concurrent execution (SQLEngine is not thread-safe)
- Update collection.h MultiQuery doc comment from concurrently to sequentially
- Add C++ collection tests (6 MultiQuery test cases)
- Add C API tests (reranker functions + multi_vector_query end-to-end)
- Implement Python test cases (11 previously skipped tests now active)
- Simplify Python query_executor validation for unified duplicate field check
* style: format Python files with ruff
* fix: adapt to main branch API changes (VectorQuery->Query rename, validate_and_sanitize)
* fix: multi_vector tests now use multiple same-type vector fields (dense2, sparse2)
* fix: suppress RET501 for intentional default return None in RerankFunction._get_object
* style: ruff format test_collection.py
* refact multi vector query
* format code
* fix(multi-vector): expose SubVectorQuery in Python binding, fix tests
- Register _SubVectorQuery in pybind11 with from_vector_query() factory
- Convert _VectorQuery to _SubVectorQuery in MultiVectorQueryExecutor
- Relax RRF/Weighted score assertion tolerance from 1e-10 to 1e-6
- Fix WeightedReRanker test metric to IP (matching HnswIndexParam default)
* style: ruff format query_executor.py
* fix: define _USE_MATH_DEFINES for M_PI on Windows (MSVC)
* refactor: include reranker.h directly in query.h instead of forward declaration
* refactor(reranker): move topn from member variable to rerank() parameter
* refact code
* style(python): fix ruff UP035/UP037 in multi_vector_reranker
- import Callable from collections.abc instead of typing (UP035)
- remove redundant quotes around MetricType annotations (UP037)
* chore: trigger PR sync
* refact code
* fix(examples): restore CMakeLists.txt formatting broken by clang-format
* refactor(reranker): remove redundant metrics_ map by querying schema directly, and use insert return value to avoid duplicate set lookup
* refactor(reranker): defer schema binding to query time and remove C API callback reranker
egolearner
lichen2015
sanyi