5.1.7

Release artifacts are available at Maven Central.

What has changed?

• Fix: Prevent table corruption when adding a column after a deleted variable-length column (by @congjun-yang in #11)
• Fix: Promote global usage map to a reference map once it outgrows inline capacity
• Fix: Use locale-aware word boundaries for text case-conversion (StrConv)
• Feat: Make text case-conversion functions locale sensitive
• Feat: Allow writing indexes with unsupported sort orders via opt-in property
• Perf: Add opt-in JMH benchmark suite; document the autoSync performance trade-off
• Build: Make the Apache POI dependency optional
• Build: Raise minimum build JDK to 17 (bytecode target remains Java 11)
• Docs: Add CONTRIBUTING.md, CODE_OF_CONDUCT.md, issue/PR templates, and missing Javadoc on core API interfaces
• Test: Migrate JUnit assertions to AssertJ; add coverage for complex values, attachments, builders and utils
• Chore: Silence numerous compiler/Eclipse warnings (this-escape, deprecation, narrowing conversions, checkstyle)

Links

• Full Changelog
• Maven Central - jackcess
• Vulnerabilities Report (0)