Package org.springframework.integration.transformer

Class ToProtobufTransformer

java.lang.Object

org.springframework.integration.context.IntegrationObjectSupport

org.springframework.integration.transformer.AbstractTransformer

org.springframework.integration.transformer.ToProtobufTransformer

All Implemented Interfaces:

Aware, BeanFactoryAware, BeanNameAware, InitializingBean, ApplicationContextAware, ExpressionCapable, GenericTransformer<Message<?>,Message<?>>, NamedComponent, Transformer

public class ToProtobufTransformer
extends AbstractTransformer

A Protocol Buffer transformer for generated Message objects.

If the content type is set to application/x-protobuf (default if no content type), then the output message payload is of type byte array.

If the content type is set to application/json and the com.google.protobuf:protobuf-java-util dependency is on the classpath, the output message payload if of type String.

Since:

6.1

Author:

Christian Tzolov

Field Summary

Fields inherited from class org.springframework.integration.context.IntegrationObjectSupport

EXPRESSION_PARSER, logger

Constructor Summary

Constructors

Constructor	Description
ToProtobufTransformer()
ToProtobufTransformer(ProtobufMessageConverter protobufMessageConverter)

Method Summary

Modifier and Type	Method	Description
protected Object	doTransform(Message<?> message)	Subclasses must implement this method to provide the transformation logic.

Methods inherited from class org.springframework.integration.transformer.AbstractTransformer

transform

Methods inherited from class org.springframework.integration.context.IntegrationObjectSupport

afterPropertiesSet, extractTypeIfPossible, generateId, getApplicationContext, getApplicationContextId, getBeanDescription, getBeanFactory, getBeanName, getChannelResolver, getComponentName, getComponentType, getConversionService, getExpression, getIntegrationProperties, getIntegrationProperty, getMessageBuilderFactory, getTaskScheduler, isInitialized, onInit, setApplicationContext, setBeanFactory, setBeanName, setChannelResolver, setComponentName, setConversionService, setMessageBuilderFactory, setPrimaryExpression, setTaskScheduler, toString

Methods inherited from class java.lang.Object

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

Constructor Details

ToProtobufTransformer

public ToProtobufTransformer()

ToProtobufTransformer

public ToProtobufTransformer(ProtobufMessageConverter protobufMessageConverter)

Method Details

doTransform

protected Object doTransform(Message<?> message)

Description copied from class: AbstractTransformer

Subclasses must implement this method to provide the transformation logic. If the return value is itself a Message, it will be used as the result. Otherwise, any non-null return value will be used as the payload of the result Message.

Specified by:

doTransform in class AbstractTransformer

Parameters:

message - The message.

Returns:

The result of the transformation.