Example usage for org.springframework.integration.aggregator ExpressionEvaluatingCorrelationStrategy ExpressionEvaluatingCorrelationStrategy

Introduction

In this page you can find the example usage for org.springframework.integration.aggregator ExpressionEvaluatingCorrelationStrategy ExpressionEvaluatingCorrelationStrategy.

Prototype

public ExpressionEvaluatingCorrelationStrategy(Expression expression) 

Source Link

Usage

From source file:org.springframework.cloud.stream.app.hdfs.dataset.sink.HdfsDatasetSinkConfiguration.java

@Bean
@Primary//w  w w  . j  a v  a  2  s  . c  o m
@ServiceActivator(inputChannel = Sink.INPUT)
FactoryBean<MessageHandler> aggregatorFactoryBean(MessageChannel toSink, MessageGroupStore messageGroupStore) {
    AggregatorFactoryBean aggregatorFactoryBean = new AggregatorFactoryBean();
    aggregatorFactoryBean
            .setCorrelationStrategy(new ExpressionEvaluatingCorrelationStrategy("payload.getClass().name"));
    aggregatorFactoryBean.setReleaseStrategy(new MessageCountReleaseStrategy(properties.getBatchSize()));
    aggregatorFactoryBean.setMessageStore(messageGroupStore);
    aggregatorFactoryBean.setProcessorBean(new DefaultAggregatingMessageGroupProcessor());
    aggregatorFactoryBean.setExpireGroupsUponCompletion(true);
    aggregatorFactoryBean.setSendPartialResultOnExpiry(true);
    aggregatorFactoryBean.setOutputChannel(toSink);
    return aggregatorFactoryBean;
}

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