org.springframework.remoting.httpinvoker
Class HttpInvokerProxyFactoryBean

java.lang.Object
  extended by org.springframework.remoting.support.RemoteAccessor
      extended by org.springframework.remoting.support.UrlBasedRemoteAccessor
          extended by org.springframework.remoting.support.RemoteInvocationBasedAccessor
              extended by org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor
                  extended by org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean
All Implemented Interfaces:
Advice, Interceptor, MethodInterceptor, FactoryBean, InitializingBean, HttpInvokerClientConfiguration

public class HttpInvokerProxyFactoryBean
extends HttpInvokerClientInterceptor
implements FactoryBean, InitializingBean

Factory bean for HTTP invoker proxies. Behaves like the proxied service when used as bean reference, exposing the specified service interface.

The service URL must be an HTTP URL exposing an HTTP invoker service. Optionally, a codebase URL can be specified for on-demand dynamic code download from a remote location. For details, see HttpInvokerClientInterceptor docs.

Serializes remote invocation objects and deserializes remote invocation result objects. Uses Java serialization just like RMI, but provides the same ease of setup as Caucho's HTTP-based Hessian and Burlap protocols.

HTTP invoker is the recommended protocol for Java-to-Java remoting. It is more powerful and more extensible than Hessian and Burlap, at the expense of being tied to Java. Nevertheless, it is as easy to set up as Hessian and Burlap, which is its main advantage compared to RMI.

Since:
1.1
Author:
Juergen Hoeller
See Also:
RemoteAccessor.setServiceInterface(java.lang.Class), UrlBasedRemoteAccessor.setServiceUrl(java.lang.String), HttpInvokerClientInterceptor.setCodebaseUrl(java.lang.String), HttpInvokerClientInterceptor, HttpInvokerServiceExporter, RmiProxyFactoryBean, HessianProxyFactoryBean, BurlapProxyFactoryBean

Field Summary
 
Fields inherited from class org.springframework.remoting.support.RemoteAccessor
logger
 
Constructor Summary
HttpInvokerProxyFactoryBean()
           
 
Method Summary
 void afterPropertiesSet()
          Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
 Object getObject()
          Return an instance (possibly shared or independent) of the object managed by this factory.
 Class getObjectType()
          Return the type of object that this FactoryBean creates, or null if not known in advance.
 boolean isSingleton()
          Is the bean managed by this factory a singleton or a prototype?
 
Methods inherited from class org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor
executeRequest, getCodebaseUrl, getHttpInvokerRequestExecutor, invoke, setCodebaseUrl, setHttpInvokerRequestExecutor
 
Methods inherited from class org.springframework.remoting.support.RemoteInvocationBasedAccessor
createRemoteInvocation, getRemoteInvocationFactory, recreateRemoteInvocationResult, setRemoteInvocationFactory
 
Methods inherited from class org.springframework.remoting.support.UrlBasedRemoteAccessor
getServiceUrl, setServiceUrl
 
Methods inherited from class org.springframework.remoting.support.RemoteAccessor
getServiceInterface, setServiceInterface
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.springframework.remoting.httpinvoker.HttpInvokerClientConfiguration
getServiceUrl
 

Constructor Detail

HttpInvokerProxyFactoryBean

public HttpInvokerProxyFactoryBean()
Method Detail

afterPropertiesSet

public void afterPropertiesSet()
                        throws MalformedURLException
Description copied from interface: InitializingBean
Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:
afterPropertiesSet in interface InitializingBean
Throws:
MalformedURLException

getObject

public Object getObject()
Description copied from interface: FactoryBean
Return an instance (possibly shared or independent) of the object managed by this factory. As with a BeanFactory, this allows support for both the Singleton and Prototype design pattern.

If this method returns null, the factory will consider the FactoryBean as not fully initialized and throw a corresponding FactoryBeanNotInitializedException.

Specified by:
getObject in interface FactoryBean
Returns:
an instance of the bean (should not be null; a null value will be considered as an indication of incomplete initialization)
See Also:
FactoryBeanNotInitializedException

getObjectType

public Class getObjectType()
Description copied from interface: FactoryBean
Return the type of object that this FactoryBean creates, or null if not known in advance. This allows to check for specific types of beans without instantiating objects, for example on autowiring.

For a singleton, this should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.

This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.

NOTE: Autowiring will simply ignore FactoryBeans that return null here. Therefore it is highly recommended to implement this method properly, using the current state of the FactoryBean.

Specified by:
getObjectType in interface FactoryBean
Returns:
the type of object that this FactoryBean creates, or null if not known at the time of the call
See Also:
ListableBeanFactory.getBeansOfType(java.lang.Class)

isSingleton

public boolean isSingleton()
Description copied from interface: FactoryBean
Is the bean managed by this factory a singleton or a prototype? That is, will getObject() always return the same object (a reference that can be cached)?

NOTE: If a FactoryBean indicates to hold a singleton object, the object returned from getObject() might get cached by the owning BeanFactory. Hence, do not return true unless the FactoryBean always exposes the same reference.

The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.

Specified by:
isSingleton in interface FactoryBean
Returns:
if this bean is a singleton
See Also:
FactoryBean.getObject()


Copyright (c) 2002-2007 The Spring Framework Project.