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

    PageParameters parameters = new PageParameters();
    parameters.set(0, "i1");
    parameters.set(1, "i2");
    parameters.set("a", "b");
    parameters.set("b", "c");
    PageProvider provider = new PageProvider(MockPage.class, parameters);
    provider.setPageSource(context);
    IRequestHandler handler = new BookmarkablePageRequestHandler(provider);
    Url url = encoder.mapHandler(handler);
    assertEquals("wicket/bookmarkable/" + PAGE_CLASS_NAME + "/i1/i2?a=b&b=c", url.toString());
  }

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    parameters.set(0, "i1");
    parameters.set(1, "i2");
    parameters.set("a", "b");
    parameters.set("b", "c");


    PageProvider provider = new PageProvider(MockPage.class, parameters);
    provider.setPageSource(context);
    IRequestHandler handler = new BookmarkablePageRequestHandler(provider);
    Url url = encoder.mapHandler(handler);


    assertEquals("wicket/bookmarkable/" + PAGE_CLASS_NAME + "/i1/i2?a=b&b=c", url.toString());
  }

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    page.getPageParameters().set(1, "i2");
    page.getPageParameters().set("a", "b");
    page.getPageParameters().set("b", "c");
    page.setCreatedBookmarkable(true);


    IPageProvider provider = new PageProvider(page);
    IRequestHandler handler = new RenderPageRequestHandler(provider);
    Url url = encoder.mapHandler(handler);


    assertEquals("wicket/bookmarkable/" + PAGE_CLASS_NAME + "/i1/i2?15&a=b&b=c", url.toString());
  }

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    page.getPageParameters().set("a", "b");
    page.getPageParameters().set("b", "c");


    page.setCreatedBookmarkable(false);


    IPageProvider provider = new PageProvider(page);
    IRequestHandler handler = new RenderPageRequestHandler(provider);
    Url url = encoder.mapHandler(handler);


    // never allow bookmarkable render url for page that has not been created by bookmarkable
    // URL

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    MockPage page = new MockPage(15);
    page.setBookmarkable(true);
    page.setCreatedBookmarkable(true);
    page.setPageStateless(true);


    IPageProvider provider = new PageProvider(page);
    IRequestHandler handler = new RenderPageRequestHandler(provider);


    Url url = encoder.mapHandler(handler);


    assertEquals("wicket/bookmarkable/" + PAGE_CLASS_NAME, url.toString());

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    if (e instanceof StalePageException)
    {
      // If the page was stale, just re-render it
      // (the url should always be updated by an redirect in that case)
      return new RenderPageRequestHandler(new PageProvider(((StalePageException)e).getPage()));
    }
    else if (e instanceof PageExpiredException)
    {
      return createPageRequestHandler(new PageProvider(Application.get()
        .getApplicationSettings()
        .getPageExpiredErrorPage()));
    }
    else if (e instanceof AuthorizationException ||
      e instanceof ListenerInvocationNotAllowedException)
    {
      return createPageRequestHandler(new PageProvider(Application.get()
        .getApplicationSettings()
        .getAccessDeniedPage()));
    }
    else if (e instanceof ResponseIOException)
    {
      logger.error("Connection lost, give up responding.", e);
      return new EmptyRequestHandler();
    }
    else if (e instanceof PackageResource.PackageResourceBlockedException && application.usesDeploymentConfig())
    {
      logger.debug(e.getMessage(), e);
      return new ErrorCodeRequestHandler(404);
    }
    else
    {


      final UnexpectedExceptionDisplay unexpectedExceptionDisplay = application.getExceptionSettings()
        .getUnexpectedExceptionDisplay();


      logger.error("Unexpected error occurred", e);


      if (IExceptionSettings.SHOW_EXCEPTION_PAGE.equals(unexpectedExceptionDisplay))
      {
        Page currentPage = extractCurrentPage();
        return createPageRequestHandler(new PageProvider(new ExceptionErrorPage(e,
          currentPage)));
      }
      else if (IExceptionSettings.SHOW_INTERNAL_ERROR_PAGE.equals(unexpectedExceptionDisplay))
      {
        return createPageRequestHandler(new PageProvider(
          application.getApplicationSettings().getInternalErrorPage()));
      }
      else
      {
        // IExceptionSettings.SHOW_NO_EXCEPTION_PAGE

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   *
   */
  @Test
  public void encode1()
  {
    PageProvider provider = new PageProvider(MockPage.class, new PageParameters());
    provider.setPageSource(context);
    IRequestHandler handler = new BookmarkablePageRequestHandler(provider);
    Url url = encoder.mapHandler(handler);
    assertEquals(PAGE_CLASS_NAME, url.toString());
  }

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    PageParameters parameters = new PageParameters();
    parameters.set(0, "i1");
    parameters.set(1, "i2");
    parameters.set("a", "b");
    parameters.set("b", "c");
    PageProvider provider = new PageProvider(MockPage.class, parameters);
    provider.setPageSource(context);
    IRequestHandler handler = new BookmarkablePageRequestHandler(provider);
    Url url = encoder.mapHandler(handler);
    assertEquals(PAGE_CLASS_NAME + "/i1/i2?a=b&b=c", url.toString());
  }

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    parameters.set(0, "i1");
    parameters.set(1, "i2");
    parameters.set("a", "b");
    parameters.set("b", "c");


    PageProvider provider = new PageProvider(MockPage.class, parameters);
    provider.setPageSource(context);
    IRequestHandler handler = new BookmarkablePageRequestHandler(provider);
    Url url = encoder.mapHandler(handler);


    assertEquals(PAGE_CLASS_NAME + "/i1/i2?a=b&b=c", url.toString());
  }

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    page.getPageParameters().set(1, "i2");
    page.getPageParameters().set("a", "b");
    page.getPageParameters().set("b", "c");
    page.setCreatedBookmarkable(true);


    IPageProvider provider = new PageProvider(page);
    IRequestHandler handler = new RenderPageRequestHandler(provider);
    Url url = encoder.mapHandler(handler);


    assertEquals(PAGE_CLASS_NAME + "/i1/i2?15&a=b&b=c", url.toString());
  }

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