Examples of org.apache.wicket.request.cycle.RequestCycle

org.apache.wicket.request.cycle.RequestCycle
{@link RequestCycle} consists of two steps:
1. Resolve request handler
2. Execute request handler
During {@link IRequestHandler} execution the handler can schedule another {@link IRequestHandler}to run after it is done, or replace all {@link IRequestHandler}s on stack with another {@link IRequestHandler}. @see #scheduleRequestHandlerAfterCurrent(IRequestHandler) @see #replaceAllRequestHandlers(IRequestHandler) @author Matej Knopp @author igor.vaynberg

    Session session = ThreadContext.getSession();


    if (session == null)
    {
      // no session is available via ThreadContext, so lookup in session store
      RequestCycle requestCycle = RequestCycle.get();
      if (requestCycle != null)
      {
        session = Application.get().getSessionStore().lookup(requestCycle.getRequest());
        if (session != null)
        {
          ThreadContext.setSession(session);
        }
      }

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   */
  public final String getId()
  {
    if (id == null)
    {
      RequestCycle requestCycle = RequestCycle.get();
      if (requestCycle != null)
      {
        id = getSessionStore().getSessionId(requestCycle.getRequest(), false);
      }
      // we have one?
      if (id != null)
      {
        dirty();

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   */
  public final Serializable getAttribute(final String name)
  {
    if (!isTemporary())
    {
      RequestCycle cycle = RequestCycle.get();
      if (cycle != null)
      {
        return getSessionStore().getAttribute(cycle.getRequest(), name);
      }
    }
    else
    {
      if (temporarySessionAttributes != null)

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   */
  public final List<String> getAttributeNames()
  {
    if (!isTemporary())
    {
      RequestCycle cycle = RequestCycle.get();
      if (cycle != null)
      {
        return Collections.unmodifiableList(getSessionStore().getAttributeNames(
          cycle.getRequest()));
      }
    }
    else
    {
      if (temporarySessionAttributes != null)

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   */
  public final void removeAttribute(String name)
  {
    if (!isTemporary())
    {
      RequestCycle cycle = RequestCycle.get();
      if (cycle != null)
      {
        getSessionStore().removeAttribute(cycle.getRequest(), name);
      }
    }
    else
    {
      if (temporarySessionAttributes != null)

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   */
  public final void setAttribute(String name, Serializable value)
  {
    if (!isTemporary())
    {
      RequestCycle cycle = RequestCycle.get();
      if (cycle == null)
      {
        throw new IllegalStateException(
          "Cannot set the attribute: no RequestCycle available.  If you get this error when using WicketTester.startPage(Page), make sure to call WicketTester.createRequestCycle() beforehand.");
      }


      ISessionStore store = getSessionStore();
      Request request = cycle.getRequest();


      // extra check on session binding event
      if (value == this)
      {
        Object current = store.getAttribute(request, name);

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  public final void onRequest()
  {
    WebApplication app = (WebApplication)getComponent().getApplication();
    AjaxRequestTarget target = app.newAjaxRequestTarget(getComponent().getPage());


    RequestCycle requestCycle = RequestCycle.get();
    requestCycle.scheduleRequestHandlerAfterCurrent(target);


    respond(target);
  }

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      header = new AjaxHtmlHeaderContainer(this);
      final Page parentPage = component.getPage();
      parentPage.addOrReplace(header);
    }


    RequestCycle requestCycle = component.getRequestCycle();


    // save old response, set new
    Response oldResponse = requestCycle.setResponse(encodingHeaderResponse);


    try {
      encodingHeaderResponse.reset();


      // render the head of component and all it's children


      component.renderHead(header);


      if (component instanceof MarkupContainer)
      {
        ((MarkupContainer)component).visitChildren(new IVisitor<Component, Void>()
        {
          @Override
          public void component(final Component component, final IVisit<Void> visit)
          {
            if (component.isVisibleInHierarchy())
            {
              component.renderHead(header);
            }
            else
            {
              visit.dontGoDeeper();
            }
          }
        });
      }
    } finally {
      // revert to old response
      requestCycle.setResponse(oldResponse);
    }


    writeHeaderContribution(response);


    headerRendering = false;

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  /**
   * @return The request for this component's active request cycle
   */
  public final Request getRequest()
  {
    RequestCycle requestCycle = getRequestCycle();
    if (requestCycle == null)
    {
      // Happens often with WicketTester when one forgets to call
      // createRequestCycle()
      throw new WicketRuntimeException("No RequestCycle is currently set!");
    }
    return requestCycle.getRequest();
  }

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  {
    super.renderHead(component, response);


    CoreLibrariesContributor.contributeAjax(component.getApplication(), response);


    RequestCycle requestCycle = component.getRequestCycle();
    Url baseUrl = requestCycle.getUrlRenderer().getBaseUrl();
    CharSequence ajaxBaseUrl = Strings.escapeMarkup(baseUrl.toString());
    response.render(JavaScriptHeaderItem.forScript("Wicket.Ajax.baseUrl=\"" + ajaxBaseUrl +
      "\";", "wicket-ajax-base-url"));


    renderExtraHeaderContributors(component, response);

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