Invocation - JBOSS Portal 2.6 API 英文版文档

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org.jboss.portal.common.invocation
Class Invocation

java.lang.Object
  org.jboss.portal.common.invocation.Invocation

Direct Known Subclasses:: Command, ControllerCommand, PortletInvocation, ServerInvocation

public abstract class Invocation
extends java.lang.Object

A generic invocation object.

Version:: $Revision: 5451 $
Author:: Julien Viet

Field Summary

private int currentIndex
          The current index in the chain.

private InterceptorStack currentStack
          The current interceptor stack.

static InterceptorStack EMPTY_STACK
          .

private InvocationHandler handler
          .

Constructor Summary

Invocation()


Method Summary

java.lang.Object getAttribute(Scope attrScope, java.lang.Object attrKey)


abstract InvocationContext getContext()
          Return the invocation context or throw IllegalStateException.

InvocationHandler getHandler()


java.lang.Object invoke(InterceptorStack newStack)
          Execute the invocation through the chain of interceptors.

java.lang.Object invokeNext()
          Invoke the next interceptor in the chain.

void removeAttribute(Scope attrScope, java.lang.Object attrKey)


void setAttribute(Scope attrScope, java.lang.Object attrKey, java.lang.Object attrValue)


void setHandler(InvocationHandler handler)


Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_STACK

public static final InterceptorStack EMPTY_STACK

currentIndex

private int currentIndex

The current index in the chain.

currentStack

private InterceptorStack currentStack

The current interceptor stack.

handler

private InvocationHandler handler

Constructor Detail

Invocation

public Invocation()

Method Detail

getContext

public abstract InvocationContext getContext()
                                      throws java.lang.IllegalStateException

Return the invocation context or throw IllegalStateException.

Returns:: the invocation context
Throws:: java.lang.IllegalStateException - if no context is associated with this invocation

getAttribute

public java.lang.Object getAttribute(Scope attrScope,
                                     java.lang.Object attrKey)
                              throws java.lang.IllegalArgumentException

Throws:: java.lang.IllegalArgumentException
See Also:: InvocationContext.getAttribute(Scope,Object)

setAttribute

public void setAttribute(Scope attrScope,
                         java.lang.Object attrKey,
                         java.lang.Object attrValue)
                  throws java.lang.IllegalArgumentException

Throws:: java.lang.IllegalArgumentException
See Also:: InvocationContext.setAttribute(Scope,Object,Object)

removeAttribute

public void removeAttribute(Scope attrScope,
                            java.lang.Object attrKey)
                     throws java.lang.IllegalArgumentException

Throws:: java.lang.IllegalArgumentException
See Also:: InvocationContext.removeAttribute(Scope,Object)

getHandler

public InvocationHandler getHandler()

setHandler

public void setHandler(InvocationHandler handler)

invokeNext

public java.lang.Object invokeNext()
                            throws java.lang.Exception,
                                   InvocationException

Invoke the next interceptor in the chain. If the end of the chain is reached then the dispatch() is invoked.

Throws:: java.lang.Exception; InvocationException

invoke

public java.lang.Object invoke(InterceptorStack newStack)
                        throws java.lang.Exception,
                               InvocationException

Execute the invocation through the chain of interceptors.

Throws:: java.lang.Exception; InvocationException