Examples of org.apache.wicket.core.request.handler.PageProvider

Package org.apache.wicket.core.request.handler

Examples of org.apache.wicket.core.request.handler.PageProvider

org.apache.wicket.core.request.handler.PageProvider
Provides page instance for request handlers. Each of the constructors has just enough information to get existing or create new page instance. Requesting or creating page instance is deferred until {@link #getPageInstance()} is called.
Purpose of this class is to reduce complexity of both {@link IRequestMapper}s and {@link IRequestHandler}s. {@link IRequestMapper} examines the URL, gathers all relevantinformation about the page in the URL (combination of page id, page class, page parameters and render count), creates {@link PageProvider} object and creates a {@link IRequestHandler} instancethat can use the {@link PageProvider} to access the page.
Apart from simplifying {@link IRequestMapper}s and {@link IRequestHandler}s {@link PageProvider}also helps performance because creating or obtaining page from {@link IPageManager} is delayeduntil the {@link IRequestHandler} actually requires the page. @author Matej Knopp

   */
  protected IRequestHandler processHybrid(PageInfo pageInfo,
    Class<? extends IRequestablePage> pageClass, PageParameters pageParameters,
    Integer renderCount)
  {
    PageProvider provider = new PageProvider(pageInfo.getPageId(), pageClass, pageParameters,
      renderCount);
    provider.setPageSource(getContext());
    if (provider.isNewPageInstance() && !getRecreateMountedPagesAfterExpiry())
    {
      throw new PageExpiredException(String.format("Bookmarkable page id '%d' has expired.",
        pageInfo.getPageId()));
    }
    else
    {
      PageParameters constructionPageParameters = provider.getPageInstance().getPageParameters();
      if (PageParameters.equals(constructionPageParameters, pageParameters) == false)
      {
        // create a fresh page instance because the request page parameters are different than the ones
        // when the resolved page by id has been created
        return new RenderPageRequestHandler(new PageProvider(pageClass, pageParameters));
      }
      return new RenderPageRequestHandler(provider);
    }
  }

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   * @return Page
   */
  @SuppressWarnings("unchecked")
  public <T extends Page> T startPage(final T page)
  {
    return (T)startPage(new PageProvider(page));
  }

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    // must be null for Pages
    componentInPage = null;


    // prepare the request
    request.setUrl(application.getRootRequestMapper().mapHandler(
      new BookmarkablePageRequestHandler(new PageProvider(pageClass, parameters))));


    // process the request
    processRequest();


    // The last rendered page

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   * @return Bookmarkable URL to page
   */
  public final <C extends Page> Url mapUrlFor(final Class<C> pageClass,
    final PageParameters parameters)
  {
    IRequestHandler handler = new BookmarkablePageRequestHandler(new PageProvider(pageClass,
      parameters));
    return mapUrlFor(handler);
  }

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   * @return Bookmarkable URL to page
   */
  public final <C extends Page> CharSequence urlFor(final Class<C> pageClass,
    final PageParameters parameters)
  {
    IRequestHandler handler = new BookmarkablePageRequestHandler(new PageProvider(pageClass,
      parameters));
    return renderUrl(mapUrlFor(handler), handler);
  }

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  {
    if (page instanceof Page)
    {
      ((Page)page).setStatelessHint(false);
    }
    scheduleRequestHandlerAfterCurrent(new RenderPageRequestHandler(new PageProvider(page),
      RenderPageRequestHandler.RedirectPolicy.AUTO_REDIRECT));
  }

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   * 
   * @param pageClass
   */
  public void setResponsePage(Class<? extends IRequestablePage> pageClass)
  {
    IPageProvider provider = new PageProvider(pageClass, null);
    scheduleRequestHandlerAfterCurrent(new RenderPageRequestHandler(provider,
      RenderPageRequestHandler.RedirectPolicy.ALWAYS_REDIRECT));
  }

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   * @param parameters
   */
  public void setResponsePage(Class<? extends IRequestablePage> pageClass,
    PageParameters parameters)
  {
    IPageProvider provider = new PageProvider(pageClass, parameters);
    scheduleRequestHandlerAfterCurrent(new RenderPageRequestHandler(provider,
      RenderPageRequestHandler.RedirectPolicy.ALWAYS_REDIRECT));
  }

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   * @return Page
   */
  @SuppressWarnings("unchecked")
  public <T extends Page> T startPage(final T page)
  {
    return (T)startPage(new PageProvider(page));
  }

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    // must be null for Pages
    componentInPage = null;


    // prepare the request
    request.setUrl(application.getRootRequestMapper().mapHandler(
      new BookmarkablePageRequestHandler(new PageProvider(pageClass, parameters))));


    // process the request
    processRequest();


    // The last rendered page

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