Example usage for org.springframework.batch.core.step.item Chunk setEnd

Introduction

In this page you can find the example usage for org.springframework.batch.core.step.item Chunk setEnd.

Prototype

public void setEnd() 

Source Link

Document

Set the flag to say that this chunk represents an end of stream (there is no more data to process).

Usage

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

/**
 * Implements reading as well as any related listener calls required.
 *
 * @param contribution a {@link StepContribution}
 * @param chunk a {@link Chunk}//from   www  .  j a  v  a  2 s .co m
 * @return an item
 * @throws Exception
 */
protected final I doProvide(final StepContribution contribution, final Chunk<I> chunk) throws Exception {
    try {
        listener.beforeRead();
        I item = itemReader.read();
        if (item != null) {
            listener.afterRead(item);
        } else {
            chunk.setEnd();
        }

        return item;
    } catch (Exception e) {
        if (logger.isDebugEnabled()) {
            logger.debug(e.getMessage() + " : " + e.getClass().getName());
        }
        listener.onReadError(e);
        throw e;
    }
}

---

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

@Override
public Chunk<I> provide(final StepContribution contribution) throws Exception {

    final Chunk<I> inputs = new Chunk<I>();
    repeatOperations.iterate(new RepeatCallback() {

        @Override//  w  w  w  . j a v  a  2 s.co  m
        public RepeatStatus doInIteration(final RepeatContext context) throws Exception {
            I item = null;
            try {
                item = read(contribution, inputs);
            } catch (SkipOverflowException e) {
                // read() tells us about an excess of skips by throwing an
                // exception
                return RepeatStatus.FINISHED;
            }
            if (item == null) {
                inputs.setEnd();
                return RepeatStatus.FINISHED;
            }
            inputs.add(item);
            contribution.incrementReadCount();
            return RepeatStatus.CONTINUABLE;
        }

    });

    return inputs;

}

---