Java 类org.springframework.batch.core.ItemReadListener 实例源码

@Before
public void setupMock() {
    when(taskletStep.getTasklet()).thenReturn(
            new ChunkOrientedTasklet(chunkProvider, chunkProcessor));
    when(taskletStep.getName()).thenReturn("FOOOBAR");

    registerAlias(ItemProcessListener.class, BatchEventAutoConfiguration.ITEM_PROCESS_EVENTS_LISTENER);
    registerAlias(StepExecutionListener.class, BatchEventAutoConfiguration.STEP_EXECUTION_EVENTS_LISTENER);
    registerAlias(ChunkListener.class, BatchEventAutoConfiguration.CHUNK_EVENTS_LISTENER);
    registerAlias(ItemReadListener.class, BatchEventAutoConfiguration.ITEM_READ_EVENTS_LISTENER);
    registerAlias(ItemWriteListener.class, BatchEventAutoConfiguration.ITEM_WRITE_EVENTS_LISTENER);
    registerAlias(SkipListener.class, BatchEventAutoConfiguration.SKIP_EVENTS_LISTENER);
}

@Bean
public Job readWriteJob() {
    Step step = stepBuilders.get("readWriteStep")
                            .<String, String>chunk(10)
                            .reader(reader())
                            .writer(writer())
                            .listener((ItemReadListener) stopListener())
                            .build();
    return jobBuilders.get("readWriterJob").start(step).build();
}

@Bean
@ConditionalOnProperty(prefix = "spring.cloud.task.batch.events.item-read", name = "enabled", havingValue = "true", matchIfMissing = true)
public ItemReadListener itemReadEventsListener() {
    return new EventEmittingItemReadListener(listenerChannels.itemReadEvents(),taskEventProperties.getItemReadOrder());
}

private void registerItemReadEvents(SimpleChunkProvider chunkProvider) {
    if(this.applicationContext.containsBean(BatchEventAutoConfiguration.ITEM_READ_EVENTS_LISTENER)) {
        chunkProvider.registerListener((ItemReadListener) this.applicationContext.getBean(BatchEventAutoConfiguration.ITEM_READ_EVENTS_LISTENER));
    }
}