Examples of org.springframework.batch.repeat.RepeatOperations

Package org.springframework.batch.repeat

Examples of org.springframework.batch.repeat.RepeatOperations

org.springframework.batch.repeat.RepeatOperations
The main interface providing access to batch operations. The batch client is the {@link RepeatCallback}, where a single item or record is processed. The batch behaviour, boundary conditions, transactions etc, are dealt with by the {@link RepeatOperations} in such as way that the client does not need to knowabout them. The client may have access to framework abstractions, like template data sources, but these should work the same whether they are in a batch or not. @author Dave Syer


  @Override
  protected Tasklet createTasklet() {
    Assert.state(reader != null, "ItemReader must be provided");
    Assert.state(processor != null || writer != null, "ItemWriter or ItemProcessor must be provided");
    RepeatOperations repeatOperations = createChunkOperations();
    SimpleChunkProvider<I> chunkProvider = new SimpleChunkProvider<I>(reader, repeatOperations);
    SimpleChunkProcessor<I, O> chunkProcessor = new SimpleChunkProcessor<I, O>(processor, writer);
    chunkProvider.setListeners(new ArrayList<StepListener>(itemListeners));
    chunkProcessor.setListeners(new ArrayList<StepListener>(itemListeners));
    ChunkOrientedTasklet<I> tasklet = new ChunkOrientedTasklet<I>(chunkProvider, chunkProcessor);

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    this.chunkOperations = repeatTemplate;
    return this;
  }


  protected RepeatOperations createChunkOperations() {
    RepeatOperations repeatOperations = chunkOperations;
    if (repeatOperations == null) {
      RepeatTemplate repeatTemplate = new RepeatTemplate();
      repeatTemplate.setCompletionPolicy(getChunkCompletionPolicy());
      repeatOperations = repeatTemplate;
    }

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    factory.setItemReader(new ListItemReader<String>(new ArrayList<String>()));
    factory.setItemWriter(new EmptyItemWriter<String>());
    factory.setJobRepository(new JobRepositorySupport());
    factory.setTransactionManager(new ResourcelessTransactionManager());


    factory.setStepOperations(new RepeatOperations() {


      @Override
      public RepeatStatus iterate(RepeatCallback callback) {
        list = new ArrayList<String>();
        list.add("foo");

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  @Override
  protected Tasklet createTasklet() {
    Assert.state(getReader() != null, "ItemReader must be provided");
    Assert.state(getProcessor() != null || getWriter() != null, "ItemWriter or ItemProcessor must be provided");
    RepeatOperations repeatOperations = createRepeatOperations();
    ChunkProvider<I> chunkProvider = new JsrChunkProvider<I>();
    JsrChunkProcessor<I, O> chunkProcessor = new JsrChunkProcessor<I, O>(getReader(), getProcessor(), getWriter(), repeatOperations);
    chunkProcessor.setListeners(new ArrayList<StepListener>(getItemListeners()));
    ChunkOrientedTasklet<I> tasklet = new ChunkOrientedTasklet<I>(chunkProvider, chunkProcessor);
    tasklet.setBuffering(!isReaderTransactionalQueue());

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      batchRetryTemplate.setBackOffPolicy(backOffPolicy);
    }
    batchRetryTemplate.setRetryPolicy(retryPolicyWrapper);


    // Coordinate the retry policy with the exception handler:
    RepeatOperations stepOperations = getStepOperations();
    if (stepOperations instanceof RepeatTemplate) {
      SimpleRetryExceptionHandler exceptionHandler = new SimpleRetryExceptionHandler(retryPolicyWrapper,
          getExceptionHandler(), nonRetryableExceptionClasses);
      ((RepeatTemplate) stepOperations).setExceptionHandler(exceptionHandler);
    }

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    assertEquals(1, target.count);
  }


  public void testSetTemplate() throws Exception {
    final List<Object> calls = new ArrayList<Object>();
    interceptor.setRepeatOperations(new RepeatOperations() {
            @Override
      public RepeatStatus iterate(RepeatCallback callback) {
        try {
          Object result = callback.doInIteration(null);
          calls.add(result);

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    assertEquals(1, calls.size());
  }


  public void testCallbackNotExecuted() throws Exception {
    final List<Object> calls = new ArrayList<Object>();
    interceptor.setRepeatOperations(new RepeatOperations() {
            @Override
      public RepeatStatus iterate(RepeatCallback callback) {
        calls.add(null);
        return RepeatStatus.FINISHED;
      }

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Related Classes of org.springframework.batch.repeat.RepeatOperations

org.springframework.batch.core.jsr.step.builder.JsrSimpleStepBuilder

org.springframework.batch.core.step.builder.FaultTolerantStepBuilder

org.springframework.batch.core.step.builder.SimpleStepBuilder

org.springframework.batch.core.step.item.RepeatOperationsStepFactoryBeanTests

org.springframework.batch.repeat.interceptor.RepeatOperationsInterceptorTests

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