org.apache.flink.streaming.connectors.rabbitmq

Interface RMQDeserializationSchema.RMQCollector<T>

All Superinterfaces:

org.apache.flink.util.Collector<T>

Enclosing interface:

RMQDeserializationSchema<T>

public static interface RMQDeserializationSchema.RMQCollector<T>
extends org.apache.flink.util.Collector<T>

Special collector for RMQ messages.

It extends the Collector to give the ability to collect more than 1 message and the ability to set the message correlationId and deliveryTag.

Method Summary

Modifier and Type	Method and Description
boolean	setMessageIdentifiers(String correlationId, long deliveryTag) Sets the correlation id and the delivery tag that corresponds to the records originating from the RMQ event.

Methods inherited from interface org.apache.flink.util.Collector

close, collect

Method Detail

setMessageIdentifiers

boolean setMessageIdentifiers(String correlationId,
                              long deliveryTag)

Sets the correlation id and the delivery tag that corresponds to the records originating from the RMQ event. If the correlation id has been processed before, records will not be emitted downstream.

If not set explicitly, the AMQP.BasicProperties#getCorrelationId() and Envelope.getDeliveryTag() will be used.

NOTE:Can be called once for a single invokation of a RMQDeserializationSchema.deserialize(Envelope, AMQP.BasicProperties, byte[], RMQCollector) method.

Returns:

true, if a message with given correlationId was seen before