[jasperblues]

Moves Drivine from 0.4.1 to 0.5.0 (v0.5.0, train 2026.11.1):

• pom.xml: drivine.version 0.4.1 to 0.5.0 (dice-storage uses drivine4j-spring-boot-starter).
• dice-storage/codegen-gradle/build.gradle.kts: the standalone fallback for drivineVersion 0.4.1 to 0.5.0 (the Maven build passes -PdrivineVersion).
• CHANGELOG.md: an Unreleased entry, Compatibility: behavioral, as for 0.4.1.

No source changes.

Binary compatibility (0.4.1 to 0.5.0)

Checked against the released jars on Maven Central.

• drivine4j-spring, drivine4j-spring-boot-starter, drivine4j-codegen, drivine4j-codegen-java and drivine4j-coroutines are byte-identical between 0.4.1 and 0.5.0. drivine4j-codegen-model differs only in its version properties file. Their poms differ only in the version. Drivine's dependencies are unchanged (Jackson BOM still 2.19.2).
• In drivine4j, no class is removed. A descriptor-level javap -protected -s diff finds 18 public or protected members removed or changed, all in Drivine's Cypher-to-SQL internals: the constructor, copy and copy$default of CompiledCypher (it gains a defaulted nonFinite parameter), the constructors of OracleCypherCompiler, OracleTemporalSql, Temporals, SqlCypherCompiler.Select and SqlCypherCompiler.Companion.Texts, the constants PostgresCypherCompiler.CODE_POINT_PREFIX/EXP_UNDERFLOW/MOST_PLACES/NUMERIC_TEXT/PROPERTY_READ and SqlCypherCompiler.DOOMED, and JdbcResultMapper.rows/sqliteRows. The 237 added members are in the same compilers and backends, plus Bm25. Nothing in manager, annotation, schema, query, connection (bar JdbcConnection internals), model or test changes signature.
• None of those members is called by embabel-agent-rag-graph, embabel-chat-store or dice-storage. javap -v on their current snapshots, built on 0.4.1 (embabel-agent-rag-graph 0.6.0-20261102.070924-19, embabel-chat-store 0.7.0-20261105.174107-66, dice-storage 0.5.0-20261105.174419-65, and both autoconfigure modules), finds no reference to a removed member, and every org/drivine reference they make resolves in 0.5.0 as it did in 0.4.1. The Drivine starter, Spring, coroutines and codegen 0.4.1 jars make no such reference either.

So 0.5.0 is a drop-in for code built on 0.4.1, and each project can move on its own: no lockstep between embabel-agent-rag-graph, embabel-chat-store, dice, me and guide.

Behaviour changes in 0.5.0

• Full-text search on Postgres, SQLite and Oracle without Oracle Text now scores by BM25, as Neo4j does (Full-text search on Postgres ranks by raw term counts: no IDF or length normalisation (BM25) liberation-data/drivine4j#604). Hit order, and which hits pass a score threshold, can change on those stores.
• Oracle: several crashes when planning from the index over labels are fixed (label tests by their text; Oracle: MATCH (n:L) WHERE id(n) = x reads every node of L through the label index, not n by its key, so UNWIND $ids … WHERE id(n) = i reads the label once per id liberation-data/drivine4j#580, #581, #601), and texts past 32 KB over two rows no longer close the session (#531, #538).
• A compiled write loop now takes time in step with its rows, not their square.
• On Postgres a compiled write loop runs with enable_seqscan, enable_hashjoin and enable_mergejoin off, so its per-row reads plan as nested loops (A compiled write loop that adds to the node or edge table and reads it per row is quadratic on Postgres liberation-data/drivine4j#609); the settings are restored after the loop, also when it fails.

Built and tested

./mvnw -U -B test verify (CI's command), with Testcontainers on the test box: all ten modules pass, 0 failures, 0 errors, 0 skipped. dice-metamodel 308 tests, dice 1763, dice-storage 492, dice-storage-autoconfigure 76, dice-report 21, dice-ingestion 8, dice-mcp-autoconfigure 20, dice-integration-tests 12. KSP codegen ran on 0.5.0; dependency:tree shows only 0.5.0 Drivine artifacts.

None of the behaviour changes fails a test here.

🤖 Generated with Claude Code