Package org.springframework.integration.transformer

Class AbstractPayloadTransformer<T,U>

java.lang.Object

org.springframework.integration.context.IntegrationObjectSupport

org.springframework.integration.transformer.AbstractTransformer

org.springframework.integration.transformer.AbstractPayloadTransformer<T,U>

Type Parameters:

T - inbound payload type.

U - outbound payload type.

All Implemented Interfaces:

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

Direct Known Subclasses:

EncodingPayloadTransformer, MapToObjectTransformer, ObjectToMapTransformer, ObjectToStringTransformer, PayloadTypeConvertingTransformer, SourceCreatingTransformer, SyslogToMapTransformer, UnmarshallingTransformer

public abstract class AbstractPayloadTransformer<T,U>
extends AbstractTransformer

A base class for Transformer implementations that modify the payload of a Message. If the return value is itself a Message, it will be used as the result. Otherwise, the return value will be used as the payload of the result Message.

Author:

Mark Fisher

Field Summary

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

EXPRESSION_PARSER, logger

Constructor Summary

Constructors

Constructor	Description
AbstractPayloadTransformer()

Method Summary

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

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, 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

AbstractPayloadTransformer

public AbstractPayloadTransformer()

Method Details

doTransform

public final U 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.

transformPayload

protected abstract U transformPayload(T payload)