Example usage for org.springframework.batch.repeat RepeatStatus continueIf

Introduction

In this page you can find the example usage for org.springframework.batch.repeat RepeatStatus continueIf.

Prototype

public static RepeatStatus continueIf(boolean continuable) 

Source Link

Usage

From source file:org.springframework.batch.core.step.item.ChunkOrientedTasklet.java

@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);
        }/*from  ww  w  .j av a2s  .  c o m*/
    }

    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());

}

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From source file:org.springframework.batch.repeat.support.TaskExecutorRepeatTemplateBulkAsynchronousTests.java

@Before
public void setUp() {

    template = new TaskExecutorRepeatTemplate();
    TaskExecutor taskExecutor = new SimpleAsyncTaskExecutor();
    threadPool.setMaxPoolSize(300);//from   w w  w  . j  a  v a  2 s  .c o  m
    threadPool.setCorePoolSize(10);
    threadPool.setQueueCapacity(0);
    threadPool.afterPropertiesSet();
    taskExecutor = threadPool;
    template.setTaskExecutor(taskExecutor);
    template.setThrottleLimit(throttleLimit);

    items = Collections.synchronizedList(new ArrayList<String>());

    callback = new RepeatCallback() {

        private volatile AtomicInteger count = new AtomicInteger(0);

        @Override
        public RepeatStatus doInIteration(RepeatContext context) throws Exception {
            int position = count.incrementAndGet();
            String item = position <= total ? "" + position : null;
            items.add("" + item);
            if (item != null) {
                beBusy();
            }
            /*
             * In a multi-threaded task, one of the callbacks can call
             * FINISHED early, while other threads are still working, and
             * would do more work if the callback was called again. (This
             * happens for instance if there is a failure and you want to
             * retry the work.)
             */
            RepeatStatus result = RepeatStatus.continueIf(position != early && item != null);
            if (position == error) {
                throw new RuntimeException("Planned");
            }
            if (!result.isContinuable()) {
                logger.debug("Returning " + result + " for count=" + position);
            }
            return result;
        }
    };

}

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