org.springframework.remoting.caucho
Class HessianClientInterceptor

java.lang.Object
  org.springframework.remoting.support.RemoteAccessor
      org.springframework.remoting.support.UrlBasedRemoteAccessor
          org.springframework.remoting.caucho.HessianClientInterceptor

All Implemented Interfaces:

Advice, Interceptor, MethodInterceptor, InitializingBean

Direct Known Subclasses:

HessianProxyFactoryBean

public class HessianClientInterceptor
extends UrlBasedRemoteAccessor
implements MethodInterceptor

MethodInterceptor for accessing a Hessian service. Supports authentication via username and password. The service URL must be an HTTP URL exposing a Hessian service.

Hessian is a slim, binary RPC protocol. For information on Hessian, see the Hessian website

Note: There is no requirement for services accessed with this proxy factory to have been exported using Spring's HessianServiceExporter, as there is no special handling involved. As a consequence, you can also access services that have been exported using Caucho's HessianServlet.

Since:

29.09.2003

Author:

Juergen Hoeller

See Also:

RemoteAccessor.setServiceInterface(java.lang.Class), UrlBasedRemoteAccessor.setServiceUrl(java.lang.String), setUsername(java.lang.String), setPassword(java.lang.String), HessianServiceExporter, HessianProxyFactoryBean, HessianProxyFactory, HessianServlet

Field Summary

Fields inherited from class org.springframework.remoting.support.RemoteAccessor

logger

Constructor Summary

HessianClientInterceptor()

Method Summary

void	afterPropertiesSet() Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
protected RemoteAccessException	convertHessianAccessException(Throwable ex) Convert the given Hessian access exception to an appropriate Spring RemoteAccessException.
protected Object	createHessianProxy(com.caucho.hessian.client.HessianProxyFactory proxyFactory) Create the Hessian proxy that is wrapped by this interceptor.
Object	invoke(MethodInvocation invocation)
void	prepare() Initialize the Hessian proxy for this interceptor.
void	setOverloadEnabled(boolean overloadEnabled) Set whether overloaded methods should be enabled for remote invocations.
void	setPassword(String password) Set the password that this factory should use to access the remote service.
void	setProxyFactory(com.caucho.hessian.client.HessianProxyFactory proxyFactory) Set the HessianProxyFactory instance to use.
void	setSendCollectionType(boolean sendCollectionType) Set whether to send the Java collection type for each serialized collection.
void	setSerializerFactory(com.caucho.hessian.io.SerializerFactory serializerFactory) Specify the Hessian SerializerFactory to use.
void	setUsername(String username) Set the username that this factory should use to access the remote service.

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

Constructor Detail

HessianClientInterceptor

public HessianClientInterceptor()

Method Detail

setProxyFactory

public void setProxyFactory(com.caucho.hessian.client.HessianProxyFactory proxyFactory)

Set the HessianProxyFactory instance to use. If not specified, a default HessianProxyFactory will be created.

Allows to use an externally configured factory instance, in particular a custom HessianProxyFactory subclass.

setSerializerFactory

public void setSerializerFactory(com.caucho.hessian.io.SerializerFactory serializerFactory)

Specify the Hessian SerializerFactory to use.

This will typically be passed in as an inner bean definition of type com.caucho.hessian.io.SerializerFactory, with custom bean property values applied.

setSendCollectionType

public void setSendCollectionType(boolean sendCollectionType)

Set whether to send the Java collection type for each serialized collection. Default is "true".

setUsername

public void setUsername(String username)

Set the username that this factory should use to access the remote service. Default is none.

The username will be sent by Hessian via HTTP Basic Authentication.

See Also:

HessianProxyFactory.setUser(java.lang.String)

setPassword

public void setPassword(String password)

Set the password that this factory should use to access the remote service. Default is none.

The password will be sent by Hessian via HTTP Basic Authentication.

See Also:

HessianProxyFactory.setPassword(java.lang.String)

setOverloadEnabled

public void setOverloadEnabled(boolean overloadEnabled)

Set whether overloaded methods should be enabled for remote invocations. Default is "false".

See Also:

HessianProxyFactory.setOverloadEnabled(boolean)

afterPropertiesSet

public void afterPropertiesSet()

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

Overrides:

afterPropertiesSet in class UrlBasedRemoteAccessor

prepare

public void prepare()
             throws RemoteLookupFailureException

Initialize the Hessian proxy for this interceptor.

Throws:

RemoteLookupFailureException - if the service URL is invalid

createHessianProxy

protected Object createHessianProxy(com.caucho.hessian.client.HessianProxyFactory proxyFactory)
                             throws MalformedURLException

Create the Hessian proxy that is wrapped by this interceptor.

Parameters:

proxyFactory - the proxy factory to use

Returns:

the Hessian proxy

Throws:

MalformedURLException - if thrown by the proxy factory

See Also:

HessianProxyFactory.create(java.lang.String)

invoke

public Object invoke(MethodInvocation invocation)
              throws Throwable

Specified by:

invoke in interface MethodInterceptor

Throws:

Throwable

convertHessianAccessException

protected RemoteAccessException convertHessianAccessException(Throwable ex)

Convert the given Hessian access exception to an appropriate Spring RemoteAccessException.

Parameters:

ex - the exception to convert

Returns:

the RemoteAccessException to throw