#11 spring batch: StepContribution

spring-batch/basic/src/main/java/io/springbatch/basic/step/stepcontribution/StepContributionConfiguration.java

@@ -0,0 +1,53 @@
+package io.springbatch.basic.step.stepcontribution;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.batch.core.Job;
+import org.springframework.batch.core.Step;
+import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
+import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
+import org.springframework.batch.repeat.RepeatStatus;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@RequiredArgsConstructor
+public class StepContributionConfiguration {
+
+    private final JobBuilderFactory jobBuilderFactory;
+    private final StepBuilderFactory stepBuilderFactory;
+
+    @Bean
+    public Job job() {
+        return jobBuilderFactory.get("job")
+                .start(step1())
+                .next(step2())
+                .build();
+    }
+
+    /*
+    Tasklet(ChunkOrientedTasklet) 이 StepExecution 생성
+    StepExecution 이 StepContribution 생성
+    ChunkOrientedTasklet 실행
+    ItemReader, ItemProcessor, ItemWriter 에서 수행된 데이터 StepContribution 에 저장
+    StepExecution 완료되는 시점에 apply 메소드 호출 StepContribution 에 저장된 데이터 StepExecution 에 업데이트
+ */
+    @Bean
+    public Step step1() {
+        return stepBuilderFactory.get("step1")
+                .tasklet((contribution, chunkContext) -> {
+                    System.out.println("step1 was executed");
+                    return RepeatStatus.FINISHED;
+                })
+                .build();
+    }
+
+    @Bean
+    public Step step2() {
+        return stepBuilderFactory.get("step2")
+                .tasklet((contribution, chunkContext) -> {
+                    System.out.println("step2 was executed");
+                    return RepeatStatus.FINISHED;
+                })
+                .build();
+    }
+}

spring-batch/basic/src/main/java/io/springbatch/basic/step/stepexecution/StepExecutionConfiguration.java

@@ -9,7 +9,7 @@ import org.springframework.batch.repeat.RepeatStatus;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
-@Configuration
+//@Configuration
 @RequiredArgsConstructor
 public class StepExecutionConfiguration {