Class AbstractTransformer

java.lang.Object

org.springframework.integration.context.IntegrationObjectSupport

org.springframework.integration.transformer.AbstractTransformer

All Implemented Interfaces:

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

Direct Known Subclasses:

AbstractPayloadTransformer, AbstractXmlTransformer, AbstractZipTransformer, ClaimCheckInTransformer, ClaimCheckOutTransformer, DecodingTransformer, FromProtobufTransformer, JsonToObjectTransformer, ObjectToJsonTransformer, SimpleFromAvroTransformer, SimpleToAvroTransformer, StreamTransformer, ToProtobufTransformer, XPathTransformer

public abstract class AbstractTransformer
extends IntegrationObjectSupport
implements Transformer

A base class for Transformer implementations.

Author:

Mark Fisher, Oleg Zhurakousky

Field Summary

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

EXPRESSION_PARSER, logger

Constructor Summary

Constructors

Constructor	Description
AbstractTransformer()

Method Summary

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

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

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

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractTransformer

public AbstractTransformer()

Method Details

transform

public final Message<?> transform(Message<?> message)

Specified by:

transform in interface GenericTransformer<Message<?>, Message<?>>

Specified by:

transform in interface Transformer

doTransform

protected abstract Object doTransform(Message<?> message)

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.

Parameters:

message - The message.

Returns:

The result of the transformation.