@EnableBatchProcessing -> DefaultBatchConfiguration
- 배치 작업 구성 및 실행에 필요한 유틸리티 빈을 자동으로 설정
- Spring Batch 5.0
- 둘 중 하나만 사용
- 선언적 vs 프로그래밍
- @EnableBatchProcessing 사용은 권장하지 않음
Batch 아키텍처
Chunk-oriented & AbstractPagingItemReader
- 페이징 기능을 제공하는 기본 abstract 클래스
- AbstractPagingItemReader를 상속하는 클래스
> JdbcPagingItemReader
> JpaPagingItemReader
ClassifierComposite-ItemWriter
- 분기에 따라 적절한 ItemWriter에게 전달
- thread-safe
- 함께 사용하면 유용한 프로세서는 ClassifierCompositeItemProcessor
FlatFileItemWriter
- LineAggregator
> FieldExtractor가 리턴한 object[]를 어떻게 String으로 변환할 것인지를 정의하는 인터페이스
> 주로 delimiter와 link break를 정하는 것이 관심사
- FieldExtractor
> 객체에서 각 필드를 추출해서 그것을 Object[]로 반환하는 인터페이스
> 어떤 필드를 추출할지, 말 지를 결정하는 것이 관심사
@SpringBatchTest
- 쉽게 생각해서 테스트 환경에서 사용하는 "DefaultBatchConfiguration" 클래스
- 다음 Bean들을 등록
> JobLauncherTestUtils
> JobRepositoryTestUtils
> StepScopeTestExecutionListener 및 JobScopeTestExecutionListener
https://docs.spring.io/spring-batch/reference/job/java-config.html
Java Configuration :: Spring Batch
Spring 3 brought the ability to configure applications with Java instead of XML. As of Spring Batch 2.2.0, you can configure batch jobs by using the same Java configuration. There are three components for the Java-based configuration: the @EnableBatchProce
docs.spring.io
Spring Boot 3.0 Migration Guide
Spring Boot. Contribute to spring-projects/spring-boot development by creating an account on GitHub.
github.com
https://docs.spring.io/spring-batch/reference/domain.html
The Domain Language of Batch :: Spring Batch
To any experienced batch architect, the overall concepts of batch processing used in Spring Batch should be familiar and comfortable. There are “Jobs” and “Steps” and developer-supplied processing units called ItemReader and ItemWriter. However, be
docs.spring.io
Spring Batch - Reference Documentation
If a group of Steps share similar configurations, then it may be helpful to define a “parent” Step from which the concrete Steps may inherit properties. Similar to class inheritance in Java, the “child” Step combines its elements and attributes wit
docs.spring.io
FlatFileItemWriter :: Spring Batch
FlatFileItemReader has a very simple relationship with file resources. When the reader is initialized, it opens the file (if it exists), and throws an exception if it does not. File writing isn’t quite so simple. At first glance, it seems like a similar
docs.spring.io
SpringBatchTest (Spring Batch 5.1.1-SNAPSHOT API)
Annotation that can be specified on a test class that runs Spring Batch based tests. Provides the following features over the regular Spring TestContext Framework: A typical usage of this annotation with JUnit 4 is like the following: @RunWith(SpringRunner
docs.spring.io
