Example usage for org.springframework.batch.core.step.item SimpleChunkProcessor SimpleChunkProcessor

Introduction

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

Prototype

public SimpleChunkProcessor(@Nullable ItemProcessor<? super I, ? extends O> itemProcessor,
            ItemWriter<? super O> itemWriter) 

Source Link

Usage

From source file:es.fcs.batch.integration.chunk.SerializableChunkProcessor.java

@SuppressWarnings("unchecked")
private void doInit() throws JobExecutionException {
    if (delegate != null) {
        // Delegate is already initialized
        return;/*from  w  ww .  j  a  v  a 2s. co m*/
    }

    // Initializing processor and writer
    if (itemWriter == null && itemWriterSerializable == null) {
        throw new JobExecutionException("No itemWriter defined");
    }
    if (itemProcessor == null && itemProcessorSerializable == null) {
        throw new JobExecutionException("No itemWriter defined");
    }
    if (itemWriter == null)
        itemWriter = (ItemWriter) itemWriterSerializable;
    if (itemProcessor == null)
        itemProcessor = (ItemProcessor) itemProcessorSerializable;

    // Initializing delegate
    delegate = new SimpleChunkProcessor<I, O>(itemProcessor, itemWriter);
}

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From source file:es.fcs.batch.integration.chunk.MyRemoteChunkHandlerFactoryBean.java

/**
 * Replace the chunk processor in the tasklet provided with one that can act as a master in the Remote Chunking
 * pattern./*from  w  w w  .  j av  a2s  .  c  o  m*/
 * 
 * @param tasklet a ChunkOrientedTasklet
 * @param chunkWriter an ItemWriter that can send the chunks to remote workers
 * @param stepContributionSource a StepContributionSource used to gather results from the workers
 */
private void replaceChunkProcessor(ChunkOrientedTasklet<?> tasklet, ItemWriter<T> chunkWriter,
        final StepContributionSource stepContributionSource) {
    setField(tasklet, "chunkProcessor",
            new SimpleChunkProcessor<T, T>(new PassThroughItemProcessor<T>(), chunkWriter) {
                /**
                * 
                */
                private static final long serialVersionUID = -8914556774351841413L;

                @Override
                protected void write(StepContribution contribution, Chunk<T> inputs, Chunk<T> outputs)
                        throws Exception {

                    doWrite(outputs.getItems());
                    // Do not update the step contribution until the chunks are
                    // actually processed
                    updateStepContribution(contribution, stepContributionSource);
                }
            });
}

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

/**
 * Extension point for creating appropriate {@link ChunkProcessor}. Return
 * value must subclass {@link SimpleChunkProcessor} due to listener
 * registration.//www  .  j  av a2 s  .  com
 */
protected SimpleChunkProcessor<T, S> configureChunkProcessor() {
    return new SimpleChunkProcessor<T, S>(itemProcessor, itemWriter);
}

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From source file:org.springframework.batch.integration.chunk.RemoteChunkHandlerFactoryBean.java

/**
 * Replace the chunk processor in the tasklet provided with one that can act as a master in the Remote Chunking
 * pattern./*from  ww  w  .  j a  v a 2  s .c  o  m*/
 * 
 * @param tasklet a ChunkOrientedTasklet
 * @param chunkWriter an ItemWriter that can send the chunks to remote workers
 * @param stepContributionSource a StepContributionSource used to gather results from the workers
 */
private void replaceChunkProcessor(ChunkOrientedTasklet<?> tasklet, ItemWriter<T> chunkWriter,
        final StepContributionSource stepContributionSource) {
    setField(tasklet, "chunkProcessor",
            new SimpleChunkProcessor<T, T>(new PassThroughItemProcessor<T>(), chunkWriter) {
                @Override
                protected void write(StepContribution contribution, Chunk<T> inputs, Chunk<T> outputs)
                        throws Exception {
                    doWrite(outputs.getItems());
                    // Do not update the step contribution until the chunks are
                    // actually processed
                    updateStepContribution(contribution, stepContributionSource);
                }
            });
}

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