Package org.springframework.integration.handler

Class ExpressionCommandMessageProcessor

java.lang.Object

org.springframework.integration.util.AbstractExpressionEvaluator

org.springframework.integration.handler.AbstractMessageProcessor<Object>

org.springframework.integration.handler.ExpressionCommandMessageProcessor

All Implemented Interfaces:

Aware, BeanFactoryAware, InitializingBean, MessageProcessor<Object>, IntegrationPattern

public class ExpressionCommandMessageProcessor
extends AbstractMessageProcessor<Object>
implements IntegrationPattern

A MessageProcessor implementation that expects an Expression or expressionString as the Message payload. When processing, it simply evaluates that expression.

Since:

2.0

Author:

Dave Syer, Mark Fisher, Gary Russell, Artem Bilan

Field Summary

Fields inherited from class org.springframework.integration.util.AbstractExpressionEvaluator

EXPRESSION_PARSER, logger

Constructor Summary

Constructors

Constructor	Description
ExpressionCommandMessageProcessor()
ExpressionCommandMessageProcessor(MethodFilter methodFilter)
ExpressionCommandMessageProcessor(MethodFilter methodFilter, BeanFactory beanFactory)

Method Summary

Modifier and Type	Method	Description
IntegrationPatternType	getIntegrationPatternType()	Return a pattern type this component implements.
Object	processMessage(Message<?> message)	Evaluates the Message payload expression as a command.
final void	setBeanFactory(BeanFactory beanFactory)	Specify a BeanFactory in order to enable resolution via @beanName in the expression.

Methods inherited from class org.springframework.integration.util.AbstractExpressionEvaluator

afterPropertiesSet, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, getBeanFactory, getEvaluationContext, getEvaluationContext, getMessageBuilderFactory, onInit, setConversionService

Methods inherited from class java.lang.Object

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

Constructor Details

ExpressionCommandMessageProcessor

public ExpressionCommandMessageProcessor()

ExpressionCommandMessageProcessor

public ExpressionCommandMessageProcessor(@Nullable
 MethodFilter methodFilter)

ExpressionCommandMessageProcessor

public ExpressionCommandMessageProcessor(@Nullable
 MethodFilter methodFilter,
 @Nullable
 BeanFactory beanFactory)

Method Details

setBeanFactory

public final void setBeanFactory(BeanFactory beanFactory)

Description copied from class: AbstractExpressionEvaluator

Specify a BeanFactory in order to enable resolution via @beanName in the expression.

Specified by:

setBeanFactory in interface BeanFactoryAware

Overrides:

setBeanFactory in class AbstractExpressionEvaluator

getIntegrationPatternType

public IntegrationPatternType getIntegrationPatternType()

Description copied from interface: IntegrationPattern

Return a pattern type this component implements.

Specified by:

getIntegrationPatternType in interface IntegrationPattern

Returns:

the IntegrationPatternType this component implements.

processMessage

@Nullable
public Object processMessage(Message<?> message)

Evaluates the Message payload expression as a command.

Specified by:

processMessage in interface MessageProcessor<Object>

Specified by:

processMessage in class AbstractMessageProcessor<Object>

Parameters:

message - The message to process.

Returns:

The result.

Throws:

IllegalArgumentException - if the payload is not an Exception or String