org.axonframework.common.annotation

Class MethodMessageHandler

java.lang.Object

org.axonframework.common.annotation.AbstractMessageHandler

org.axonframework.common.annotation.MethodMessageHandler

All Implemented Interfaces:

Comparable<AbstractMessageHandler>

public final class MethodMessageHandler
extends AbstractMessageHandler

Represents a method recognized as a handler by the handler inspector (see MethodMessageHandlerInspector).

Since:

2.0

Author:

Allard Buijze

Method Summary

Methods

Modifier and Type	Method and Description
static MethodMessageHandler	createFor(Method method, Class<?> explicitPayloadType, ParameterResolverFactory parameterResolverFactory) Creates a MethodMessageHandler for the given method, using given explicitPayloadType (if not null) defining the payload of the message it supports.
boolean	equals(Object o)
<T extends Annotation> T	getAnnotation(Class<T> annotationType) Returns the member-level annotation of given annotationType, or null if no such annotation is present.
Method	getMethod() Returns the Method backing this handler.
String	getMethodName() Returns the name of the method backing this handler.
int	hashCode()
Object	invoke(Object target, Message message) Invokes this handler for the given target instance, using the given message as source object to provide parameter values.
String	toString()

Methods inherited from class org.axonframework.common.annotation.AbstractMessageHandler

compareTo, findResolvers, getParameterValueResolvers, getPayloadType, matches

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

createFor

public static MethodMessageHandler createFor(Method method,
                             Class<?> explicitPayloadType,
                             ParameterResolverFactory parameterResolverFactory)

Creates a MethodMessageHandler for the given method, using given explicitPayloadType (if not null) defining the payload of the message it supports. If null, the payload type is deducted from the first parameter of the method.

Parameters:

method - The method to create a Handler for

explicitPayloadType - The payload type explicitly defined on the method, or null

parameterResolverFactory - The strategy for resolving parameter values of handler methods

Returns:

The MethodMessageHandler implementation for the given method.

Throws:

UnsupportedHandlerException - if the given method is not suitable as a Handler

invoke

public Object invoke(Object target,
            Message message)
              throws InvocationTargetException,
                     IllegalAccessException

Description copied from class: AbstractMessageHandler

Invokes this handler for the given target instance, using the given message as source object to provide parameter values.

Specified by:

invoke in class AbstractMessageHandler

Parameters:

target - The target instance to invoke the Handler on.

message - The message providing parameter values

Returns:

The result of the handler invocation

Throws:

InvocationTargetException - when the handler throws a checked exception

IllegalAccessException - if the SecurityManager refuses the handler invocation

getAnnotation

public <T extends Annotation> T getAnnotation(Class<T> annotationType)

Description copied from class: AbstractMessageHandler

Returns the member-level annotation of given annotationType, or null if no such annotation is present.

Specified by:

getAnnotation in class AbstractMessageHandler

Type Parameters:

T - The type of annotation to retrieve

Parameters:

annotationType - The type of annotation to retrieve

Returns:

the annotation instance, or null if no such annotation is present.

getMethodName

public String getMethodName()

Returns the name of the method backing this handler.

Returns:

the name of the method backing this handler

getMethod

public Method getMethod()

Returns the Method backing this handler.

Returns:

the Method backing this handler

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class AbstractMessageHandler

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractMessageHandler