de.mindmatters.faces.spring.context.servlet
Class LifecycleExecutor

java.lang.Object
  de.mindmatters.faces.spring.context.servlet.LifecycleExecutor

All Implemented Interfaces:

HandlerAdapter

public final class LifecycleExecutor
extends java.lang.Object
implements HandlerAdapter

HandlerAdapter implementation that delegates it's work to any given arbitrary HandlerAdapter and integrates it into the workflow of the request processing of the underliying JSF implementation.

Author:

Andreas Kuhrwahl

See Also:

Lifecycle.execute(FacesContext)

Field Summary

protected org.apache.commons.logging.Log

log For logging.

Constructor Summary

LifecycleExecutor(HandlerAdapter internalHandlerAdapter)
Creates a LifecycleExecutor with the given internal HandlerAdapter internalHandlerAdapter.

LifecycleExecutor(HandlerAdapter internalHandlerAdapter, java.lang.String lifecycleId)
Creates a LifecycleExecutor with the given internal HandlerAdapter internalHandlerAdapter.

Method Summary

static java.lang.Object	getHandler(FacesContext context) Returns the current Handler from the current thread.
long	getLastModified(javax.servlet.http.HttpServletRequest request, java.lang.Object handler) Same contract as for HttpServlet's getLastModified method.
ModelAndView	handle(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.Object handler) Use the given handler to handle this request.
boolean	supports(java.lang.Object handler) Given a handler instance, return whether or not this HandlerAdapter can support it.

Methods inherited from class java.lang.Object

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

Field Detail

log

protected final org.apache.commons.logging.Log log

For logging.

Constructor Detail

LifecycleExecutor

public LifecycleExecutor(HandlerAdapter internalHandlerAdapter)

Creates a LifecycleExecutor with the given internal HandlerAdapter internalHandlerAdapter.

Parameters:

internalHandlerAdapter - The arbitrary HandlerAdapter which is decorated an integrated in the faces lifecycle

LifecycleExecutor

public LifecycleExecutor(HandlerAdapter internalHandlerAdapter,
                         java.lang.String lifecycleId)

Creates a LifecycleExecutor with the given internal HandlerAdapter internalHandlerAdapter.

Parameters:

internalHandlerAdapter - The arbitrary HandlerAdapter which is decorated an integrated in the faces lifecycle

lifecycleId - the lifecycle id for identifying the proper lifecycle this adapter will use for integration purposes

Method Detail

getHandler

public static java.lang.Object getHandler(FacesContext context)

Returns the current Handler from the current thread.

Parameters:

context - FacesContext for the current request

Returns:

the current Handler

supports

public boolean supports(java.lang.Object handler)

Given a handler instance, return whether or not this HandlerAdapter can support it. Typical HandlerAdapters will base the decision on the handler type. HandlerAdapters will usually only support one handler type each.

A typical implementation:

return (handler instanceof MyHandler);

Specified by:

supports in interface HandlerAdapter

Parameters:

handler - handler object to check

Returns:

whether or not this object can use the given handler

getLastModified

public long getLastModified(javax.servlet.http.HttpServletRequest request,
                            java.lang.Object handler)

Same contract as for HttpServlet's getLastModified method. Can simply return -1 if there's no support in the handler class.

Specified by:

getLastModified in interface HandlerAdapter

Parameters:

request - current HTTP request

handler - handler to use

Returns:

the lastModified value for the given handler

See Also:

HttpServlet.getLastModified(javax.servlet.http.HttpServletRequest), LastModified.getLastModified(javax.servlet.http.HttpServletRequest)

handle

public ModelAndView handle(javax.servlet.http.HttpServletRequest request,
                           javax.servlet.http.HttpServletResponse response,
                           java.lang.Object handler)
                    throws java.lang.Exception

Use the given handler to handle this request. The workflow that is required may vary widely.

Specified by:

handle in interface HandlerAdapter

Parameters:

request - current HTTP request

response - current HTTP response

handler - handler to use. This object must have previously been passed to the supports method of this interface, which must have returned true.

Returns:

ModelAndView object with the name of the view and the required model data, or null if the request has been handled directly

Throws:

java.lang.Exception - in case of errors