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


    if (shouldRedirectToPage(requestCycle))
    {
      // the page itself has been added to the request target, we simply issue a redirect
      // back to the page
      IRequestHandler handler = new RenderPageRequestHandler(new PageProvider(page));
      final String url = rc.urlFor(handler).toString();
      response.sendRedirect(url);
      return;
    }

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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 urlFor(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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  @Test
  public void setQueryParameterWhenRequestHasAnQueryUrl()
  {
    PageParameters parameters = new PageParameters();
    parameters.set("q_1", "q_1_value");
    IPageProvider testPageProvider = new PageProvider(MockPageParametersAware.class, parameters);
    IRequestHandler pageRequestHandler = new BookmarkablePageRequestHandler(testPageProvider);
    Url url = tester.getApplication().getRootRequestMapper().mapHandler(pageRequestHandler);
    tester.getRequest().setParameter("q_2", "q_2_value");
    tester.getRequest().setUrl(url);

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  public void setMultiValueQueryParameter()
  {
    PageParameters parameters = new PageParameters();
    parameters.add("q_1", "q_1_value_1");
    parameters.add("q_1", "q_1_value_2");
    IPageProvider testPageProvider = new PageProvider(MockPageParametersAware.class, parameters);
    IRequestHandler pageRequestHandler = new BookmarkablePageRequestHandler(testPageProvider);
    Url url = tester.getApplication().getRootRequestMapper().mapHandler(pageRequestHandler);
    tester.getRequest().addParameter("q_2", "q_2_value_1");
    tester.getRequest().addParameter("q_2", "q_2_value_2");
    tester.getRequest().setUrl(url);

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      {
        pageUrl = requestCycle.urlFor(page.getClass(), page.getPageParameters());
      }
      else
      {
        IRequestHandler handler = new RenderPageRequestHandler(new PageProvider(page));
        pageUrl = requestCycle.urlFor(handler);
      }


      appendAssignment(buffer, "settings.src", pageUrl);
    }

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   * @return a {@code IRequestHandler} capable of processing the bookmarkable request.
   */
  protected IRequestHandler processBookmarkable(Class<? extends IRequestablePage> pageClass,
    PageParameters pageParameters)
  {
    PageProvider provider = new PageProvider(pageClass, pageParameters);
    provider.setPageSource(getContext());
    return new RenderPageRequestHandler(provider);
  }

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