org.springframework.web.portlet.mvc.annotation
Class DefaultAnnotationHandlerMapping

java.lang.Object
  org.springframework.context.support.ApplicationObjectSupport
      org.springframework.web.portlet.handler.AbstractHandlerMapping
          org.springframework.web.portlet.handler.AbstractMapBasedHandlerMapping<PortletMode>
              org.springframework.web.portlet.mvc.annotation.DefaultAnnotationHandlerMapping

All Implemented Interfaces:

Aware, ApplicationContextAware, Ordered, HandlerMapping

public class DefaultAnnotationHandlerMapping
extends AbstractMapBasedHandlerMapping<PortletMode>

Implementation of the HandlerMapping interface that maps handlers based on portlet modes expressed through the RequestMapping annotation at the type or method level.

Registered by default in DispatcherPortlet. NOTE: If you define custom HandlerMapping beans in your DispatcherPortlet context, you need to add a DefaultAnnotationHandlerMapping bean explicitly, since custom HandlerMapping beans replace the default mapping strategies. Defining a DefaultAnnotationHandlerMapping also allows for registering custom interceptors:

 <bean class="org.springframework.web.portlet.mvc.annotation.DefaultAnnotationHandlerMapping">
   <property name="interceptors">
     ...
   </property>
 </bean>

Annotated controllers are usually marked with the Controller stereotype at the type level. This is not strictly necessary when RequestMapping is applied at the type level (since such a handler usually implements the Controller interface). However, Controller is required for detecting RequestMapping annotations at the method level.

NOTE: Method-level mappings are only allowed to narrow the mapping expressed at the class level (if any). A portlet mode in combination with specific parameter conditions needs to uniquely map onto one specific handler bean, not spread across multiple handler beans. It is strongly recommended to co-locate related handler methods into the same bean.

The AnnotationMethodHandlerAdapter is responsible for processing annotated handler methods, as mapped by this HandlerMapping. For RequestMapping at the type level, specific HandlerAdapters such as SimpleControllerHandlerAdapter apply.

Since:

2.5

Author:

Juergen Hoeller

See Also:

RequestMapping, AnnotationMethodHandlerAdapter

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.web.portlet.handler.AbstractMapBasedHandlerMapping

AbstractMapBasedHandlerMapping.PortletRequestMappingPredicate

Field Summary

Fields inherited from class org.springframework.context.support.ApplicationObjectSupport

logger

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

DefaultAnnotationHandlerMapping()

Method Summary

protected boolean	detectHandlerMethods(Class<?> handlerType, String beanName, RequestMapping typeMapping) Derive portlet mode mappings from the handler's method-level mappings.
protected void	detectHandlers() Register all handlers specified in the Portlet mode map for the corresponding modes.
protected PortletMode	getLookupKey(PortletRequest request) Uses the current PortletMode as lookup key.
void	initApplicationContext() Calls the registerHandlers method in addition to the superclass's initialization.

Methods inherited from class org.springframework.web.portlet.handler.AbstractMapBasedHandlerMapping

getHandlerInternal, registerHandler, registerHandler, registerHandlers, setLazyInitHandlers

Methods inherited from class org.springframework.web.portlet.handler.AbstractHandlerMapping

adaptInterceptor, extendInterceptors, getAdaptedInterceptors, getDefaultHandler, getHandler, getHandlerExecutionChain, getOrder, initInterceptors, setApplyWebRequestInterceptorsToRenderPhaseOnly, setDefaultHandler, setInterceptors, setOrder

Methods inherited from class org.springframework.context.support.ApplicationObjectSupport

getApplicationContext, getMessageSourceAccessor, initApplicationContext, isContextRequired, requiredContextClass, setApplicationContext

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultAnnotationHandlerMapping

public DefaultAnnotationHandlerMapping()

Method Detail

initApplicationContext

public void initApplicationContext()
                            throws BeansException

Calls the registerHandlers method in addition to the superclass's initialization.

Overrides:

initApplicationContext in class AbstractHandlerMapping

Throws:

ApplicationContextException - in case of initialization errors

BeansException - if thrown by ApplicationContext methods

See Also:

detectHandlers()

detectHandlers

protected void detectHandlers()
                       throws BeansException

Register all handlers specified in the Portlet mode map for the corresponding modes.

Throws:

BeansException - if the handler couldn't be registered

detectHandlerMethods

protected boolean detectHandlerMethods(Class<?> handlerType,
                                       String beanName,
                                       RequestMapping typeMapping)

Derive portlet mode mappings from the handler's method-level mappings.

Parameters:

handlerType - the handler type to introspect

beanName - the name of the bean introspected

typeMapping - the type level mapping (if any)

Returns:

true if at least 1 handler method has been registered; false otherwise

getLookupKey

protected PortletMode getLookupKey(PortletRequest request)
                            throws Exception

Uses the current PortletMode as lookup key.

Specified by:

getLookupKey in class AbstractMapBasedHandlerMapping<PortletMode>

Parameters:

request - current portlet request

Returns:

the lookup key (never null)

Throws:

Exception - if key computation failed