Java PageReference.getPage方法代码示例

import org.apache.wicket.PageReference; //导入方法依赖的package包/类
/**
 * Legt zum HashCode der View die PageReference der Page in der Session ab.
 * Falls es bereits eine PageReference zu der View in der Session gibt, wird
 * diese entfernt
 * 
 * @param page
 *            - the Page (PageReference) to store
 */
public void storePageForView(DMDWebPage page) {
    // Remove other PageReferences for the same Object
    List<PageReference> pageReferences = NocketSession.get().getPageReferences(view.hashCode());
    //use copy to iterate to prevent ConcurrentModificationException
    List<PageReference> pageReferencesCopy = new ArrayList<PageReference>(pageReferences);
    for (PageReference pageReference : pageReferencesCopy) {
        try {
            //try to lock failing fast: http://mail-archives.apache.org/mod_mbox/wicket-users/201211.mbox/%[email protected].com%3E
            PageAccessSynchronizer synchronizer = new PageAccessSynchronizer(Duration.ONE_SECOND);
            synchronizer.lockPage(pageReference.getPageId());
            if (pageReference.getPage() != null && pageReference.getPage().getDefaultModel() != null
                    && view.equals(page.getDefaultModel().getObject())) {
                pageReferences.remove(pageReference);
                // We have stored only one PageReference for this view, so we can stop here
                break;
            }
            //this should behave like a ReentrantLock
            synchronizer.unlockPage(pageReference.getPageId());
        } catch (CouldNotLockPageException e) {
            //if lock not possible, ignore this page, maybe the next call will remove this reference
        }

    }
    pageReferences.add(page.getPageReference());
}
 

import org.apache.wicket.PageReference; //导入方法依赖的package包/类
public static <T extends Component> T theSameForPage(T object, PageReference containingPageReference) {
	Page containingPage = containingPageReference.getPage();
	if (containingPage == null) {
		return object;
	}
	String path = object.getPageRelativePath();
	T retval = (T) containingPage.get(path);
	if (retval == null) {
		return object;
		// throw new IllegalStateException("There is no component like " +
		// object + " (path '" + path + "') on " + containingPage);
	}
	return retval;
}
 

import org.apache.wicket.PageReference; //导入方法依赖的package包/类
public Details(
        final AnyWrapper<T> wrapper,
        final boolean templateMode,
        final boolean includeStatusPanel,
        final PageReference pageRef) {

    this.pageRef = pageRef;

    final T inner = wrapper.getInnerObject();

    if (templateMode) {
        realm = new AjaxTextFieldPanel(
                "destinationRealm", "destinationRealm", new PropertyModel<>(inner, "realm"), false);
        AjaxTextFieldPanel.class.cast(realm).enableJexlHelp();
    } else {
        final List<RealmTO> realms = pageRef.getPage() instanceof Realms
                ? getRealmsFromLinks(Realms.class.cast(pageRef.getPage()).getRealmChoicePanel().getLinks())
                : new RealmRestClient().list();

        realm = new AjaxDropDownChoicePanel<>(
                "destinationRealm", "destinationRealm", new PropertyModel<>(inner, "realm"), false);

        ((AjaxDropDownChoicePanel<String>) realm).setChoices(
                realms.stream().map(RealmTO::getFullPath).collect(Collectors.toList()));
    }
    add(realm);
    add(getGeneralStatusInformation("generalStatusInformation", inner).
            setEnabled(includeStatusPanel).setVisible(includeStatusPanel).setRenderBodyOnly(true));
}
 

import org.apache.wicket.PageReference; //导入方法依赖的package包/类
@SuppressWarnings("unchecked")
public DMDWebPage getPageInstance() {
    DMDWebPage instance = null;
    List<PageReference> pageReferences = NocketSession.get().getPageReferences(view.hashCode());
    // Iteriert über alle PageReferences, die zu dem HashCode der View hinterlegt sind.
    // Dies ist im Normalfall genau eine PageReference, deshalb ist die Iteration hierüber nicht teuer 
    for (PageReference pageReference : pageReferences) {
        try {
            //try to lock failing fast: http://mail-archives.apache.org/mod_mbox/wicket-users/201211.mbox/%3CCANg[email protected]%3E
            PageAccessSynchronizer synchronizer = new PageAccessSynchronizer(Duration.ONE_SECOND);
            synchronizer.lockPage(pageReference.getPageId());
            Page page = pageReference.getPage();
            if (view.equals(page.getDefaultModel().getObject())) {
                instance = (DMDWebPage) page;
                //Das Modelobject muss ein sinnvolles Equals implementieren, dennoch kann sich innerhalb des 
                //View-Objektes etwas geŠndert haben, deshalb muss hier Das ModelObject neu gesetzt werden
                instance.modelChanging();
                ((IModel<Object>) instance.getDefaultModel()).setObject(view);
                instance.modelChanged();
                break;
            }
            synchronizer.unlockPage(pageReference.getPageId());
        } catch (CouldNotLockPageException e) {
            //if lock not possible, ignore this page and worst case create a new one
        }
    }
    if (instance == null) {
        instance = newPageInstance();
    }
    storePageForView(instance);
    return instance;
}