ZhaoYongChun

Use the standalone jdbc-milvus driver to connect, create a collection, bind vectors, and filter nearest-neighbor results.

Map a business object to JSON text using a type annotation, with Map configuration, update semantics and querying boundaries.

Use one order Mapper with a builder default method, an annotated short query and an XML report query.

Use dbVisitor Mapper methods for Redis commands, map products to JSON, and manage cache expiration and eviction.

Map a Milvus collection to Java entities, organize searches with builders and Mapper methods, and update selected fields.

Configure BM25 through SQL, retrieve dense-vector and keyword candidates, and return one fused result set using RRF.

Use jdbc-milvus for small writes, iterator-based paged ingestion and server-side Import, with distinct handling for counts, job IDs and failures.

Express Milvus writes, business filters and vector search in SQL, execute them through JDBC, then extend to dbVisitor object mapping, Mappers, DataGrip and DBeaver.

BCE dates cause subtle "off-by-one" bugs between Java and databases. dbVisitor 6.7.0 adds JulianDayTypeHandler and PgDateTypeHandler to provide cross-database and PostgreSQL-native mappings. Database date ranges and handler boundaries still need consideration.

"Select two columns and build a Map" is a common pattern — ID-to-name, code-to-description, etc. The builder-level queryForPairs added in dbVisitor 6.7.0 returns a Map directly in one call, no manual iteration needed.