org.springframework.integration.transformer.support

Class ExpressionEvaluatingHeaderValueMessageProcessor<T>

java.lang.Object

org.springframework.integration.transformer.support.AbstractHeaderValueMessageProcessor<T>

org.springframework.integration.transformer.support.ExpressionEvaluatingHeaderValueMessageProcessor<T>

All Implemented Interfaces:

Aware, BeanFactoryAware, MessageProcessor<T>, HeaderValueMessageProcessor<T>

public class ExpressionEvaluatingHeaderValueMessageProcessor<T>
extends AbstractHeaderValueMessageProcessor<T>
implements BeanFactoryAware

Since:

3.0

Author:

Mark Fisher, Artem Bilan

Constructor Summary

Constructors

Constructor and Description
ExpressionEvaluatingHeaderValueMessageProcessor(Expression expression, Class<T> expectedType) Create a header value processor for the given Expression and the expected type of the expression evaluation result.
ExpressionEvaluatingHeaderValueMessageProcessor(String expressionString, Class<T> expectedType) Create a header value processor for the given expression string and the expected type of the expression evaluation result.

Method Summary

Methods

Modifier and Type	Method and Description
T	processMessage(Message<?> message) Process the Message and return a value (or null).
void	setBeanFactory(BeanFactory beanFactory)

Methods inherited from class org.springframework.integration.transformer.support.AbstractHeaderValueMessageProcessor

isOverwrite, setOverwrite

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionEvaluatingHeaderValueMessageProcessor

public ExpressionEvaluatingHeaderValueMessageProcessor(Expression expression,
                                               Class<T> expectedType)

Create a header value processor for the given Expression and the expected type of the expression evaluation result. The expectedType may be null if unknown.

Parameters:

expression - the Expression to evaluate.

expectedType - the type for return value of expression evaluation result.

ExpressionEvaluatingHeaderValueMessageProcessor

public ExpressionEvaluatingHeaderValueMessageProcessor(String expressionString,
                                               Class<T> expectedType)

Create a header value processor for the given expression string and the expected type of the expression evaluation result. The expectedType may be null if unknown.

Parameters:

expressionString - the String expression presentation to evaluate.

expectedType - the type for return value of expression evaluation result.

Method Detail

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)

Specified by:

setBeanFactory in interface BeanFactoryAware

processMessage

public T processMessage(Message<?> message)

Description copied from interface: MessageProcessor

Process the Message and return a value (or null).

Specified by:

processMessage in interface MessageProcessor<T>

Parameters:

message - The message to process.

Returns:

The result.