org.springframework.kafka.streams.messaging

Class MessagingTransformer<K,V,R>

java.lang.Object

org.springframework.kafka.streams.messaging.MessagingTransformer<K,V,R>

Type Parameters:

K - the key type.

V - the value type.

R - the result value type.

All Implemented Interfaces:

org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,R>>

public class MessagingTransformer<K,V,R>
extends java.lang.Object
implements org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,R>>

A Transformer implementation that invokes a MessagingFunction converting to/from spring-messaging Message. Can be used, for example, to invoke a Spring Integration flow.

Since:

2.3

Author:

Gary Russell

Constructor Summary

Constructors

Constructor and Description
MessagingTransformer(MessagingFunction function, MessagingMessageConverter converter)

Method Summary

Modifier and Type	Method and Description
void	close()
void	init(org.apache.kafka.streams.processor.ProcessorContext context)
org.apache.kafka.streams.KeyValue<K,R>	transform(K key, V value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MessagingTransformer

public MessagingTransformer(MessagingFunction function,
                            MessagingMessageConverter converter)

Method Detail

init

public void init(org.apache.kafka.streams.processor.ProcessorContext context)

Specified by:

init in interface org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,R>>

transform

public org.apache.kafka.streams.KeyValue<K,R> transform(K key,
                                                        V value)

Specified by:

transform in interface org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,R>>

close

public void close()

Specified by:

close in interface org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,R>>