org.springframework.integration.handler.support

Class MessagingMethodInvokerHelper

java.lang.Object

org.springframework.integration.util.AbstractExpressionEvaluator

org.springframework.integration.handler.support.MessagingMethodInvokerHelper

All Implemented Interfaces:

Aware, BeanFactoryAware, InitializingBean, Lifecycle, ManageableLifecycle

public class MessagingMethodInvokerHelper
extends AbstractExpressionEvaluator
implements ManageableLifecycle

A helper class for processors that invoke a method on a target Object using a combination of message payload(s) and headers as arguments. The Method instance or method name may be provided as a constructor argument. If a method name is provided, and more than one declared method has that name, the method-selection will be dynamic, based on the underlying SpEL method resolution. Alternatively, an annotation type may be provided so that the candidates for SpEL's method resolution are determined by the presence of that annotation rather than the method name.

Since:

2.0

Author:

Mark Fisher, Oleg Zhurakousky, Dave Syer, Gunnar Hillert, Soby Chacko, Gary Russell, Artem Bilan

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MessagingMethodInvokerHelper.ParametersWrapper

Field Summary

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

EXPRESSION_PARSER, logger

Constructor Summary

Constructors

Constructor and Description
MessagingMethodInvokerHelper(Object targetObject, Class<? extends Annotation> annotationType, boolean canProcessMessageList)
MessagingMethodInvokerHelper(Object targetObject, Class<? extends Annotation> annotationType, Class<?> expectedType, boolean canProcessMessageList)
MessagingMethodInvokerHelper(Object targetObject, Method method, boolean canProcessMessageList)
MessagingMethodInvokerHelper(Object targetObject, Method method, Class<?> expectedType, boolean canProcessMessageList)
MessagingMethodInvokerHelper(Object targetObject, String methodName, boolean canProcessMessageList)
MessagingMethodInvokerHelper(Object targetObject, String methodName, Class<?> expectedType, boolean canProcessMessageList)

Method Summary

Modifier and Type	Method and Description
boolean	isRunning()
Object	process(Collection<Message<?>> messages, Map<String,Object> headers)
Object	process(Message<?> message)
void	setBeanFactory(BeanFactory beanFactory) Specify a BeanFactory in order to enable resolution via @beanName in the expression.
void	setUseSpelInvoker(boolean useSpelInvoker) A boolean flag to use SpEL Expression evaluation or InvocableHandlerMethod for target method invocation.
void	start()
void	stop()
String	toString()

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, wait, wait, wait

Constructor Detail

MessagingMethodInvokerHelper

public MessagingMethodInvokerHelper(Object targetObject,
                                    Method method,
                                    Class<?> expectedType,
                                    boolean canProcessMessageList)

MessagingMethodInvokerHelper

public MessagingMethodInvokerHelper(Object targetObject,
                                    Method method,
                                    boolean canProcessMessageList)

MessagingMethodInvokerHelper

public MessagingMethodInvokerHelper(Object targetObject,
                                    String methodName,
                                    Class<?> expectedType,
                                    boolean canProcessMessageList)

MessagingMethodInvokerHelper

public MessagingMethodInvokerHelper(Object targetObject,
                                    String methodName,
                                    boolean canProcessMessageList)

MessagingMethodInvokerHelper

public MessagingMethodInvokerHelper(Object targetObject,
                                    Class<? extends Annotation> annotationType,
                                    boolean canProcessMessageList)

MessagingMethodInvokerHelper

public MessagingMethodInvokerHelper(Object targetObject,
                                    Class<? extends Annotation> annotationType,
                                    Class<?> expectedType,
                                    boolean canProcessMessageList)

Method Detail

setUseSpelInvoker

public void setUseSpelInvoker(boolean useSpelInvoker)

A boolean flag to use SpEL Expression evaluation or InvocableHandlerMethod for target method invocation.

Parameters:

useSpelInvoker - to use SpEL Expression evaluation or not.

Since:

5.0

setBeanFactory

public 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

process

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

process

@Nullable
public Object process(Collection<Message<?>> messages,
                                Map<String,Object> headers)

toString

public String toString()

Overrides:

toString in class Object

start

public void start()

Specified by:

start in interface Lifecycle

Specified by:

start in interface ManageableLifecycle

stop

public void stop()

Specified by:

stop in interface Lifecycle

Specified by:

stop in interface ManageableLifecycle

isRunning

public boolean isRunning()

Specified by:

isRunning in interface Lifecycle

Specified by:

isRunning in interface ManageableLifecycle