v0.4.0-beta

What's Changed

• Feat/ojp 74 by @labg94 in #177
• Implement Connection Pool Abstraction with Apache Commons DBCP provider by @Copilot in #151
• XA pool implementation: Complete SPI, CommonsPool2XAProvider, Phase 1 full integration, unified configuration, and comprehensive documentation by @Copilot in #192
• Fix XA transaction failure with Spring Boot + Narayana - Session sanitization and flag routing by @Copilot in #194
• Implement unified connection model for XA and non-XA with SessionTracker, separated pool configuration, dynamic pool rebalancing, and dual-condition session lifecycle by @Copilot in #195
• Implement pool disable capability for Non-XA and XA connections by @Copilot in #197
• Add drop-in external libraries folder for proprietary JDBC drivers and libraries by @Copilot in #198
• Complete Implementation: Moving open source JDBC drivers to ojp-libs directory by @Copilot in #200
• Fix SLF4J conflict with Spring Boot and add configurable Logback settings by @Copilot in #213
• Fix transaction isolation state pollution in all connection pools with READ_COMMITTED default by @Copilot in #212
• Refactor StatementServiceImpl: Implement connect() method using Action pattern by @Copilot in #214
• Add comprehensive SPI implementation guide and ADR for Java developers by @Copilot in #199
• Analysis: Do not replace Apache Commons Pool 2 with Agroal for XA connection pooling by @Copilot in #236
• Implement housekeeping features (leak detection, max lifetime, diagnostics) for XA connection pool by @Copilot in #238
• SQL enhancer engine using Apache Calcite - Integration, Validation, Caching with XXHash, and Documentation by @Copilot in #237
• Remove XXHash from SQL Enhancer Engine cache, use original SQL as keys by @Copilot in #241
• Complete Implementation: Query optimization and rewriting in SQL Enhancer Engine with configuration support by @Copilot in #242
• Implement dynamic database schema loader for SQL query optimization by @Copilot in #243
• Add Meterian security scan as separate workflow by @Copilot in #246
• Upgrade protobuf-java to 3.25.8 to fix CVE-2024-7254 by @Copilot in #247
• Fix security vulnerabilities in Netty, lz4, and Apache Commons Lang3 dependencies by @Copilot in #249
• Fix CVE-2025-11226, CVE-2025-58057, CVE-2025-67735, CVE-2025-58056, CVE-2025-55163 by @Copilot in #248
• Fix CVE-2025-67735 and CVE-2025-48924 by centralizing dependency management by @Copilot in #250
• Upgrade dependencies to latest stable versions by @Copilot in #251
• Update Java dependencies to latest compatible versions by @Copilot in #252
• Add Apache Calcite query complexity analysis for slow query segregation by @Copilot in #255
• Implements #229 - Refactor XA transaction handling by introducing XaForgetAction class by @felipestanzani in #256
• Transform Partners section to table with descriptions and links by @Copilot in #244
• Upgrade protobuf-java from 4.33.3 to 4.33.4 by @Copilot in #257
• Add percentile latencies, max latency, throughput, and JVM metrics to PostgreSQL stress tests by @Copilot in #259
• Add second OJP server with SQL enhancer to postgres-test CI workflow by @Copilot in #253
• Remove redundant JDBC driver registration from StatementServiceImpl by @Copilot in #258
• Implement missing SQL enhancer configuration properties and automatic dialect translation by @Copilot in #260
• Specify singleton pattern requirement for StatementService actions with updated Action interface by @Copilot in #265
• Convert XaForgetAction to singleton and document pattern for all Action types by @Copilot in #266
• Document download-drivers.sh requirement before running integration tests by @Copilot in #269
• Implements many issue refactors - Refactor xaSetTransactionTimeout, xaGetTransactionTimeout, xaIsSameRM and readLob by @felipestanzani in #261
• Refactor callResource() to use Action pattern by @matheusandre1 in #272
• Refactor rollbackTransaction() to use Action pattern by @matheusandre1 in #270
• Refactor terminateSession() to use Action pattern by @matheusandre1 in #271
• Refactor commitTransaction() to use Action pattern by @matheusandre1 in #267
• Add ojp-testcontainers module for integration testing by @Copilot in #274
• Add Maven Central publishing support to ojp-testcontainers module by @Copilot in #276
• Address unanswered PR #210 review comments by @Copilot in #277
• Refactor xaStart() to use Action pattern by @matheusandre1 in #278
• Closes Issue 233 - Refactor StatementServiceImpl to utilize Action pattern for LOB creation by @felipestanzani in #279
• Resolve 15 review comments: clarify technical accuracy and remove overstated claims by @Copilot in #282
• Implement automatic session cleanup for abandoned connections by @Copilot in #284
• Resolve Chapter 9 review comments: Fix technical inaccuracies in multinode deployment documentation by @Copilot in #287
• Update eBook chapters with 27+ commits from main branch (f9cc349 → 05c75a6) by @Copilot in #286
• Resolve all 25 review comments in chapter 10 (XA Transactions) by @Copilot in #290
• Remove incorrect property name ojp.xa.pooling.enabled from documentation by @Copilot in #291
• Document ojp.xa.connection.pool.enabled in chapter 10 by @Copilot in #293
• Use virtual threads for XA pool housekeeping (Java 21+) by @Copilot in #289
• Add SQL pattern detection for session affinity (temporary tables, session variables) by @Copilot in #285
• Set OJP Server minimum Java version to 21 by @Copilot in #294
• Add server-side SSL certificate path resolution via URL placeholders with security validation by @Copilot in #296
• Document SSL/TLS certificate path placeholders in Chapter 11 by @Copilot in #299
• Update Chapter 11 to use SSL Certificate Path Placeholders consistently by @Copilot in #300
• Enforce IP whitelisting with audit logging at gRPC layer by @Copilot in #297
• Add environment-specific properties file loading with ojp-{env}.properties convention by @Copilot in #298
• Document environment-aware properties configuration in ebook Chapter 5 by @Copilot in #304
• Add mTLS support for OJP JDBC driver and server communication by @Copilot in #303
• Address chapter 11 review comments - Fix references, update mTLS documentation, and improve diagrams by @Copilot in #301
• Redirect documentation from programmatic to declarative environment configuration by @Copilot in #305
• Address Chapter 11 review comments - Clarify security architecture and implementation status by @Copilot in #307
• Document Apache Commons Pool 2 XA provider and XAConnectionPoolProvider SPI in Chapter 12 by @Copilot in #312
• Upgrade logback to 1.5.25 to address CVE-2026-1225 by @Copilot in #313
• Remove unimplemented and misplaced sections from Pool Provider SPI chapter by @Copilot in #314
• Remove undocumented multinode coordination metrics from telemetry chapter by @Copilot in #315
• Fix incorrect max_rows documentation in protocol chapter by @Copilot in #317
• Move Troubleshooting chapter to appendix, renumber chapters 16-23 by @Copilot in #319
• Correct technical inaccuracies in Chapter 15 development setup documentation by @Copilot in #321
• Issue 268: Test Cleanup by @jenspapenhagen in #325
• Add Chapter 2a: OJP JDBC Driver as Smart Load Balancer vs Traditional Database Proxies by @Copilot in #322
• Fix gRPC channel resource leak in server failover by @Copilot in #326
• Add retry logic for connection-level failures in multinode integration tests and fix session invalidation race condition by @Copilot in #320
• Update CONTRIBUTING.md to enhance clarity by @felipestanzani in #327
• Remove public modifiers from JUnit 5 test methods by @Copilot in #328
• Complete OJP E-Book: All 24 chapters with comprehensive documentation (1,043KB) + ALL Critical Gaps RESOLVED + XA Architecture Fully Integrated + StatefulSet Helm Deployment + Research-Backed Pool Sizing by @Copilot in #210
• Add version tracking to configuration documentation by @Copilot in #330
• Fix SQL Enhancer - Register Comprehensive Calcite Optimization Rules by @Copilot in #332
• [WIP] Fix incorrect SQL generation for PostgreSQL dialect in Calcite by @Copilot in #334
• Updates DB2 installation instructions according to the official DB2 documentation by @felipestanzani in #333
• Document JDBC driver requirement for v0.4.0-beta (JAR and Docker) by @Copilot in #335
• Document SQL enhancer type system limitations, add experimental warnings, and improve test observability by @Copilot in #336
• Sonar Warning Cleanup in Testclasses by @jenspapenhagen in #329
• Add PostgreSQL integration test for SQL enhancer with schema loading and optimization fixes by @Copilot in #245
• Refactor SQL enhancer: separate validation from optimization with async support by @Copilot in #288
• Fix intermittent test failures from ExecutorService leak, XA pool race condition, and deadlock by @Copilot in #339
• Run multinode integration tests 5x for timing confidence via matrix strategy by @Copilot in #340
• Fix error classification logic in multinode integration tests by @Copilot in #341
• Update documentation: JDBC drivers use ojp-libs, not pom.xml dependencies by @Copilot in #346
• Add java.time temporal type support with JDBC driver hang protection by @Copilot in #345
• Use setObject with java.time types in temporal integration tests by @Copilot in #351
• Document JVM parameter configuration for Docker deployments by @Copilot in #355
• Document required JVM parameters for IDE integration tests by @Copilot in #354
• Fix timezone-dependent test failures in Docker across multiple database tests by @Copilot in #353
• Implements Issue 215: Extract StartTransactionAction and refactor StatementServiceImpl by @felipestanzani in #360
• Disable slow query segregation by default by @Copilot in #365
• Add project roadmap by @Copilot in #366
• Circuit Breaker: implement per-datasource isolation via Registry pattern by @youzh00 in #337
• feat: OpenTelemetry distributed tracing with Zipkin/OTLP support (disabled by default) by @Copilot in #364
• docs: update ebook to reflect implemented distributed tracing by @Copilot in #367
• Add OpenTelemetry metrics to connection pools with standardized naming and separate gRPC and pool metrics controls by @Copilot in #318
• Force jackson-core to 2.18.6 to fix async parser DoS (CVSS 8) by @Copilot in #369
• chore: upgrade Java library dependencies to latest patch/minor releases by @Copilot in #370
• Emit SQL execution time, connection queue depth, and connection wait time via OpenTelemetry by @Copilot in #368
• Fix premature server health marking causing excess failures in MultinodeIntegrationTest by @Copilot in #371
• Remove stale Dockerfile.proprietary and update docs to reflect ojp-libs volume-mount driver loading by @Copilot in #372
• Fix race condition in XA pool resize preventing pool expansion after node failure by @Copilot in #373
• Refactor StatementServiceImpl and CallResourceAction; introduce ResultSetHelper and FetchNextRowsAction by @felipestanzani in #362
• Remove ojp.datasource.name as a user-configurable property by @Copilot in #376
• feat: Spring Boot starter module for zero-config OJP autoconfiguration by @Copilot in #374
• feat: bridge named-pool settings ({poolName}.ojp.*) from Spring Environment to JVM system properties by @Copilot in #377
• Support named datasource URLs in Spring Boot starter auto-configuration by @Copilot in #378
• Add OJP Champions section with Jether Rodrigues as inaugural champion by @Copilot in #381
• Implements Issue 220: Extract ExecuteUpdate logic into dedicated Action class by @felipestanzani in #384

New Contributors

• @felipestanzani made their first contribution in #256
• @matheusandre1 made their first contribution in #272
• @jenspapenhagen made their first contribution in #325

Full Changelog: v0.3.1-beta...v0.4.0-beta