How to use

ChunkProcessor

in

org.springframework.batch.core.step.item

Throwable failure = null;
try {
  chunkProcessor.process(stepContribution, chunk);

@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
  @SuppressWarnings("unchecked")
  Chunk<I> inputs = (Chunk<I>) chunkContext.getAttribute(INPUTS_KEY);
  if (inputs == null) {
    inputs = chunkProvider.provide(contribution);
    if (buffering) {
      chunkContext.setAttribute(INPUTS_KEY, inputs);
    }
  }
  chunkProcessor.process(contribution, inputs);
  chunkProvider.postProcess(contribution, inputs);
  // Allow a message coming back from the processor to say that we
  // are not done yet
  if (inputs.isBusy()) {
    logger.debug("Inputs still busy");
    return RepeatStatus.CONTINUABLE;
  }
  chunkContext.removeAttribute(INPUTS_KEY);
  chunkContext.setComplete();
  if (logger.isDebugEnabled()) {
    logger.debug("Inputs not busy, ended: " + inputs.isEnd());
  }
  return RepeatStatus.continueIf(!inputs.isEnd());
}

@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
  @SuppressWarnings("unchecked")
  Chunk<I> inputs = (Chunk<I>) chunkContext.getAttribute(INPUTS_KEY);
  if (inputs == null) {
    inputs = chunkProvider.provide(contribution);
    if (buffering) {
      chunkContext.setAttribute(INPUTS_KEY, inputs);
    }
  }
  chunkProcessor.process(contribution, inputs);
  chunkProvider.postProcess(contribution, inputs);
  // Allow a message coming back from the processor to say that we
  // are not done yet
  if (inputs.isBusy()) {
    logger.debug("Inputs still busy");
    return RepeatStatus.CONTINUABLE;
  }
  chunkContext.removeAttribute(INPUTS_KEY);
  chunkContext.setComplete();
  if (logger.isDebugEnabled()) {
    logger.debug("Inputs not busy, ended: " + inputs.isEnd());
  }
  return RepeatStatus.continueIf(!inputs.isEnd());
}

@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
  @SuppressWarnings("unchecked")
  Chunk<I> inputs = (Chunk<I>) chunkContext.getAttribute(INPUTS_KEY);
  if (inputs == null) {
    inputs = chunkProvider.provide(contribution);
    if (buffering) {
      chunkContext.setAttribute(INPUTS_KEY, inputs);
    }
  }
  chunkProcessor.process(contribution, inputs);
  chunkProvider.postProcess(contribution, inputs);
  // Allow a message coming back from the processor to say that we
  // are not done yet
  if (inputs.isBusy()) {
    logger.debug("Inputs still busy");
    return RepeatStatus.CONTINUABLE;
  }
  chunkContext.removeAttribute(INPUTS_KEY);
  chunkContext.setComplete();
  if (logger.isDebugEnabled()) {
    logger.debug("Inputs not busy, ended: " + inputs.isEnd());
  }
  return RepeatStatus.continueIf(!inputs.isEnd());
}

public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
  @SuppressWarnings("unchecked")
  Chunk<I> inputs = (Chunk<I>) chunkContext.getAttribute(INPUTS_KEY);
  if (inputs == null) {
    inputs = chunkProvider.provide(contribution);
    if (buffering) {
      chunkContext.setAttribute(INPUTS_KEY, inputs);
    }
  }
  chunkProcessor.process(contribution, inputs);
  chunkProvider.postProcess(contribution, inputs);
  // Allow a message coming back from the processor to say that we
  // are not done yet
  if (inputs.isBusy()) {
    logger.debug("Inputs still busy");
    return RepeatStatus.CONTINUABLE;
  }
  chunkContext.removeAttribute(INPUTS_KEY);
  chunkContext.setComplete();
  logger.debug("Inputs not busy, ended: "+inputs.isEnd());
  return RepeatStatus.continueIf(!inputs.isEnd());
}

@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
  @SuppressWarnings("unchecked")
  Chunk<I> inputs = (Chunk<I>) chunkContext.getAttribute(INPUTS_KEY);
  if (inputs == null) {
    inputs = chunkProvider.provide(contribution);
    if (buffering) {
      chunkContext.setAttribute(INPUTS_KEY, inputs);
    }
  }
  chunkProcessor.process(contribution, inputs);
  chunkProvider.postProcess(contribution, inputs);
  // Allow a message coming back from the processor to say that we
  // are not done yet
  if (inputs.isBusy()) {
    logger.debug("Inputs still busy");
    return RepeatStatus.CONTINUABLE;
  }
  chunkContext.removeAttribute(INPUTS_KEY);
  chunkContext.setComplete();
  logger.debug("Inputs not busy, ended: " + inputs.isEnd());
  return RepeatStatus.continueIf(!inputs.isEnd());
}