1. What’s New in Spring Batch 4.0

The Spring Batch 4.0 release has three major themes:

  • Java 8 Requirement

  • Dependencies Re-baseline

  • Builders for ItemReaders and ItemWriters

1.1. Java 8 Requirement

Spring Batch has historically followed Spring Framework’s baselines for both java version and third party dependencies. With Spring Batch 4, the Spring Framework version is being upgraded to Spring Framework 5. As a result, the Java version requirement for Spring Batch is also increasing to Java 8. This should be mainly an internal change, in that most of the framework has supported things like functional interfaces and lambdas since they were released.

1.2. Dependencies Re-baseline

In order to continue to integrate with supported versions of the third party libraries Spring Batch uses, Spring Batch 4 is updating the dependencies across the board. The new dependency versions align with Spring Framework 5.

1.3. Provide builders for the ItemReaders, ItemProcessors, and ItemWriters

Spring Batch 4 is providing a collection of builders for all of the ItemReader implementations and ItemWriter implementations that come with the framework. As of this release, builders for the following components (as well as some related utility builders) are available:

  • AmqpItemReader - AmqpItemReaderBuilder

  • ClassifierCompositeItemProcessor - ClassifierCompositeItemProcessorBuilder

  • ClassifierCompositeItemWriter - ClassifierCompositeItemWriterBuilder

  • CompositeItemWriter - CompositeItemWriterBuilder

  • FlatFileItemReader - FlatFileItemReaderBuilder

  • FlatFileItemWriter - FlatFileItemWriterBuilder

  • GemfireItemWriter - GemfireItemWriterBuilder

  • HibernateCursorItemReader - HibernateCursorItemReaderBuilder

  • HibernateItemWriter - HibernateItemWriterBuilder

  • HibernatePagingItemReader - HibernatePagingItemReaderBuilder

  • JdbcBatchItemWriter - JdbcBatchItemWriterBuilder

  • JdbcCursorItemReader - JdbcCursorItemReaderBuilder

  • JdbcPagingItemReader - JdbcPagingItemReaderBuilder

  • JmsItemReader - JmsItemReaderBuilder

  • JmsItemWriter - JmsItemWriterBuilder

  • JpaPagingItemReader - JpaPagingItemReaderBuilder

  • MongoItemReader - MongoItemReaderBuilder

  • MultiResourceItemReader - MultiResourceItemReaderBuilder

  • MultiResourceItemWriter - MultiResourceItemWriterBuilder

  • Neo4jItemWriter - Neo4jItemWriterBuilder

  • RepositoryItemReader - RepositoryItemReaderBuilder

  • RepositoryItemWriter - RepositoryItemWriterBuilder

  • ScriptItemProcessor - ScriptItemProcessorBuilder

  • SimpleMailMessageItemWriter - SimpleMailMessageItemWriterBuilder

  • SingleItemPeekableItemReader - SingleItemPeekableItemReaderBuilder

  • StaxEventItemReader - StaxEventItemReaderBuilder

  • StaxEventItemWriter - StaxEventItemWriterBuilder

  • SynchronizedItemStreamReader - SynchronizedItemStreamReaderBuilder