Package org.springframework.amqp.rabbit.listener.adapter

Class HandlerAdapter

java.lang.Object

org.springframework.amqp.rabbit.listener.adapter.HandlerAdapter

public class HandlerAdapter
extends Object

A wrapper for either an InvocableHandlerMethod or DelegatingInvocableHandler. All methods delegate to the underlying handler.

Since:

1.5

Author:

Gary Russell

Constructor Summary

Constructors

Constructor	Description
HandlerAdapter(DelegatingInvocableHandler delegatingHandler)	Construct an instance with the provided delegating handler.
HandlerAdapter(InvocableHandlerMethod invokerHandlerMethod)	Construct an instance with the provided method.

Method Summary

Modifier and Type	Method	Description
Object	getBean()	Get the bean from the handler method.
InvocationResult	getInvocationResultFor(Object result, Object inboundPayload)	Build an InvocationResult for the result and inbound payload.
String	getMethodAsString(Object payload)	Get the method signature for the payload type via Method.toGenericString().
Method	getMethodFor(Object payload)	Get the method for the payload type.
Type	getReturnTypeFor(Object payload)	Return the return type for the method that will be chosen for this payload.
InvocationResult	invoke(Message<?> message, Object... providedArgs)	Invoke the appropriate method for the payload.
boolean	isAsyncReplies()	Return true if any handler method has an async reply type.

Methods inherited from class java.lang.Object

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

Constructor Detail

HandlerAdapter

public HandlerAdapter(InvocableHandlerMethod invokerHandlerMethod)

Construct an instance with the provided method.

Parameters:

invokerHandlerMethod - the method.

HandlerAdapter

public HandlerAdapter(DelegatingInvocableHandler delegatingHandler)

Construct an instance with the provided delegating handler.

Parameters:

delegatingHandler - the handler.

Method Detail

invoke

public InvocationResult invoke(@Nullable
                               Message<?> message,
                               Object... providedArgs)
                        throws Exception

Invoke the appropriate method for the payload.

Parameters:

message - the message.

providedArgs - additional arguments.

Returns:

the invocation result.

Throws:

Exception - if one occurs.

getMethodAsString

public String getMethodAsString(Object payload)

Get the method signature for the payload type via Method.toGenericString().

Parameters:

payload - the payload.

Returns:

the method signature.

getMethodFor

public Method getMethodFor(Object payload)

Get the method for the payload type.

Parameters:

payload - the payload.

Returns:

the method.

Since:

2.2.3

getReturnTypeFor

public Type getReturnTypeFor(Object payload)

Return the return type for the method that will be chosen for this payload.

Parameters:

payload - the payload.

Returns:

the return type, or null if no handler found.

Since:

2.2.3

getBean

public Object getBean()

Get the bean from the handler method.

Returns:

the bean.

isAsyncReplies

public boolean isAsyncReplies()

Return true if any handler method has an async reply type.

Returns:

the asyncReply.

Since:

2.2.21

getInvocationResultFor

@Nullable
public InvocationResult getInvocationResultFor(Object result,
                                               Object inboundPayload)

Build an InvocationResult for the result and inbound payload.

Parameters:

result - the result.

inboundPayload - the payload.

Returns:

the invocation result.

Since:

2.1.7