Class DelegatingInvocableHandler
- java.lang.Object
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- org.springframework.kafka.listener.adapter.DelegatingInvocableHandler
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public class DelegatingInvocableHandler extends java.lang.Object
Delegates to anInvocableHandlerMethod
based on the message payload type. Matches a single, non-annotated parameter or one that is annotated withPayload
. Matches must be unambiguous.
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Constructor Summary
Constructors Constructor Description DelegatingInvocableHandler(java.util.List<org.springframework.messaging.handler.invocation.InvocableHandlerMethod> handlers, java.lang.Object bean, org.springframework.beans.factory.config.BeanExpressionResolver beanExpressionResolver, org.springframework.beans.factory.config.BeanExpressionContext beanExpressionContext)
DelegatingInvocableHandler(java.util.List<org.springframework.messaging.handler.invocation.InvocableHandlerMethod> handlers, org.springframework.messaging.handler.invocation.InvocableHandlerMethod defaultHandler, java.lang.Object bean, org.springframework.beans.factory.config.BeanExpressionResolver beanExpressionResolver, org.springframework.beans.factory.config.BeanExpressionContext beanExpressionContext)
DelegatingInvocableHandler(java.util.List<org.springframework.messaging.handler.invocation.InvocableHandlerMethod> handlers, org.springframework.messaging.handler.invocation.InvocableHandlerMethod defaultHandler, java.lang.Object bean, org.springframework.beans.factory.config.BeanExpressionResolver beanExpressionResolver, org.springframework.beans.factory.config.BeanExpressionContext beanExpressionContext, org.springframework.beans.factory.BeanFactory beanFactory, org.springframework.validation.Validator validator)
Construct an instance with the supplied handlers for the bean.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected org.springframework.messaging.handler.invocation.InvocableHandlerMethod
findHandlerForPayload(java.lang.Class<? extends java.lang.Object> payloadClass)
java.lang.Object
getBean()
Return the bean for this handler.protected org.springframework.messaging.handler.invocation.InvocableHandlerMethod
getHandlerForPayload(java.lang.Class<? extends java.lang.Object> payloadClass)
Determine theInvocableHandlerMethod
for the provided type.java.lang.String
getMethodNameFor(java.lang.Object payload)
Return a string representation of the method that will be invoked for this payload.boolean
hasDefaultHandler()
java.lang.Object
invoke(org.springframework.messaging.Message<?> message, java.lang.Object... providedArgs)
Invoke the method with the given message.protected boolean
matchHandlerMethod(java.lang.Class<? extends java.lang.Object> payloadClass, org.springframework.messaging.handler.invocation.InvocableHandlerMethod handler)
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Constructor Detail
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DelegatingInvocableHandler
@Deprecated public DelegatingInvocableHandler(java.util.List<org.springframework.messaging.handler.invocation.InvocableHandlerMethod> handlers, java.lang.Object bean, org.springframework.beans.factory.config.BeanExpressionResolver beanExpressionResolver, org.springframework.beans.factory.config.BeanExpressionContext beanExpressionContext)
Deprecated.Construct an instance with the supplied handlers for the bean.- Parameters:
handlers
- the handlers.bean
- the bean.beanExpressionResolver
- the expression resolver.beanExpressionContext
- the expression context.
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DelegatingInvocableHandler
@Deprecated public DelegatingInvocableHandler(java.util.List<org.springframework.messaging.handler.invocation.InvocableHandlerMethod> handlers, @Nullable org.springframework.messaging.handler.invocation.InvocableHandlerMethod defaultHandler, java.lang.Object bean, org.springframework.beans.factory.config.BeanExpressionResolver beanExpressionResolver, org.springframework.beans.factory.config.BeanExpressionContext beanExpressionContext)
Deprecated.Construct an instance with the supplied handlers for the bean.- Parameters:
handlers
- the handlers.defaultHandler
- the default handler.bean
- the bean.beanExpressionResolver
- the resolver.beanExpressionContext
- the context.- Since:
- 2.1.3
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DelegatingInvocableHandler
public DelegatingInvocableHandler(java.util.List<org.springframework.messaging.handler.invocation.InvocableHandlerMethod> handlers, @Nullable org.springframework.messaging.handler.invocation.InvocableHandlerMethod defaultHandler, java.lang.Object bean, @Nullable org.springframework.beans.factory.config.BeanExpressionResolver beanExpressionResolver, @Nullable org.springframework.beans.factory.config.BeanExpressionContext beanExpressionContext, @Nullable org.springframework.beans.factory.BeanFactory beanFactory, @Nullable org.springframework.validation.Validator validator)
Construct an instance with the supplied handlers for the bean.- Parameters:
handlers
- the handlers.defaultHandler
- the default handler.bean
- the bean.beanExpressionResolver
- the resolver.beanExpressionContext
- the context.beanFactory
- the bean factory.validator
- the validator.- Since:
- 2.5.11
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Method Detail
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getBean
public java.lang.Object getBean()
Return the bean for this handler.- Returns:
- the bean.
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invoke
public java.lang.Object invoke(org.springframework.messaging.Message<?> message, java.lang.Object... providedArgs) throws java.lang.Exception
Invoke the method with the given message.- Parameters:
message
- the message.providedArgs
- additional arguments.- Returns:
- the result of the invocation.
- Throws:
java.lang.Exception
- raised if no suitable argument resolver can be found, or the method raised an exception.
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getHandlerForPayload
protected org.springframework.messaging.handler.invocation.InvocableHandlerMethod getHandlerForPayload(java.lang.Class<? extends java.lang.Object> payloadClass)
Determine theInvocableHandlerMethod
for the provided type.- Parameters:
payloadClass
- the payload class.- Returns:
- the handler.
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findHandlerForPayload
@Nullable protected org.springframework.messaging.handler.invocation.InvocableHandlerMethod findHandlerForPayload(java.lang.Class<? extends java.lang.Object> payloadClass)
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matchHandlerMethod
protected boolean matchHandlerMethod(java.lang.Class<? extends java.lang.Object> payloadClass, org.springframework.messaging.handler.invocation.InvocableHandlerMethod handler)
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getMethodNameFor
public java.lang.String getMethodNameFor(java.lang.Object payload)
Return a string representation of the method that will be invoked for this payload.- Parameters:
payload
- the payload.- Returns:
- the method name.
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hasDefaultHandler
public boolean hasDefaultHandler()
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