v4.3.0-M1

⭐ New features

• Add SynchronizedItemStreamWriter #842
• Add beanRowMapper method to JdbcPagingItemReaderBuilder #819
• Add support for named queries in JpaPagingItemReader #1667
• Meta-annotate @SpringBatchTest with @ExtendWith(SpringExtension.class) #3647

🐞 Bug fixes

• Unable to set usePersist parameter with JpaItemWriterBuilder #3655
• MongoItemReaderBuilder shouldn't be throwing an error related to the limit in query when pageSize is provided #3673
• MySQL does not support millisecond accuracy in timestamps #2202
• JobLauncherTestUtils doesn't always launch new job instance because generated job parameters aren't unique #821
• Unable to set connectionAutoCommit parameter with JdbcCursorItemReaderBuilder #3717
• Incorrect Jackson configuration #3729

🚀 Enhancements

• Performance issues in SimpleJobRepository.getStepExecutionCount #3657
• Slow SQL in JdbcStepExecutionDao on Postgres #3634
• Improve TransactionAwareBufferedWriter efficiency #1166
• Improve performance in JdbcStepExecutionDao #3710
• Make RepositoryItemWriter use CrudRepository#saveAll by default #3720
• Use BulkOperations API in MongoItemWriter #3713

📔 Documentation

• Incorrect reference to stop method in documentation #3643
• Improve Javadoc of ItemProcessor regarding the nullability of input items #3648
• Misleading code example in reference documentation #3692
• The ItemProcessor section in reference docs should be a top level section #3644
• Use local storage rather than a cookie #3653
• Updated spring-doc-resources version to 0.2.1 #3700
• Add flag to show both configuration styles (Java and XML) in reference docs #572
• Upgrade versions of Asciidoctor #3703

🔨 Dependency Upgrades

• Upgrade to Spring Framework 5.3.0-M1
• Upgrade to Spring Data 2020.0.0-M1
• Upgrade to Spring Integration 5.4.0-M1
• Upgrade to Spring AMQP 2.3.0-M1
• Upgrade to Spring for Apache Kafka 2.5.3.RELEASE

❤️ Contributors

We'd like to thank all contributors who helped making this release possible! A special thank to @parikshitdutta
for his numerous contributions to this release!