Examples of org.apache.wicket.resource.loader.IStringResourceLoader

Package org.apache.wicket.resource.loader

Examples of org.apache.wicket.resource.loader.IStringResourceLoader

org.apache.wicket.resource.loader.IStringResourceLoader
The string resource loader interface allows a strategy pattern to be applied to the loading of resource strings for an application. The loader (or chain of loaders) that are used is configured via the application settings.
Each particular implementation of this interface may define its own mechanism for searching for resources. Please see the documents for each particular implementation to determine its behavior and to see how it can be configured.
It is important to note that if a resource is not found by a particular loader than the loader should return null rather than throw an exception. The reason for this is that loaders can be arranged in a chain and it would be very inefficient for loaders earlier in the chain to throw exceptions that must be caught and handled each time until the correct loader in the chain is reached. @see org.apache.wicket.settings.IResourceSettings @author Chris Turner @author Juergen Donnerstag


      Iterator<IStringResourceLoader> iter = resourceSettings.getStringResourceLoaders()
        .iterator();
      while (iter.hasNext())
      {
        IStringResourceLoader loader = iter.next();
        string = loader.loadStringResource(component, key);
        if (string != null)
        {
          break;
        }
      }

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   */
  public void testLoaderUnknownResources()
  {
    WicketTester tester = new WicketTester();
    WebApplication app = tester.getApplication();
    IStringResourceLoader loader = new ClassStringResourceLoader(app.getClass());
    Assert.assertNull("Unknown resource should return null", loader.loadStringResource(component.getClass(),
        "test.string", Locale.getDefault(), null));
    tester.destroy();
  }

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  /**
   * @see org.apache.wicket.resource.StringResourceLoaderTestBase#testLoaderUnknownResources()
   */
  public void testLoaderUnknownResources()
  {
    IStringResourceLoader loader = new BundleStringResourceLoader("unknown.resource");
    Assert.assertNull("Unknown resource should return null", loader.loadStringResource(component.getClass(),
        "test.string", Locale.getDefault(), null));
  }

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    {
      private static final long serialVersionUID = 1L;
    };
    DummyPage page = new DummyPage();
    page.add(c);
    IStringResourceLoader loader = new ComponentStringResourceLoader();
    Assert.assertNull("Missing resource should return null", loader.loadStringResource(c.getClass(), "test.string.bad",
        Locale.getDefault(), null));
  }

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    DummyPage p = new DummyPage();
    Panel panel = new Panel("panel");
    p.add(panel);
    DummyComponent c = new DummyComponent("hello", application);
    panel.add(c);
    IStringResourceLoader loader = new ComponentStringResourceLoader();
    Assert.assertEquals("Valid resourse string should be found", "Component string", loader
        .loadStringResource(c.getClass(), "component.string", Locale.getDefault(), null));
  }

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   *
   */
  public void testLoadDirectFromPage()
  {
    DummyPage p = new DummyPage();
    IStringResourceLoader loader = new ComponentStringResourceLoader();
    Assert.assertEquals("Valid resourse string should be found", "Another string", loader.loadStringResource(
        p.getClass(), "another.test.string", Locale.getDefault(), null));
  }

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   *
   */
  public void testSearchClassHierarchyFromPage()
  {
    DummySubClassPage p = new DummySubClassPage();
    IStringResourceLoader loader = new ComponentStringResourceLoader();
    Assert.assertEquals("Valid resource string should be found", "SubClass Test String",
        loader.loadStringResource(p.getClass(), "subclass.test.string", Locale.getDefault(), null));
    Assert.assertEquals("Valid resource string should be found", "Another string",
        loader.loadStringResource(p.getClass(), "another.test.string", Locale.getDefault(), null));
  }

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      // property has been found


      Iterator iter = resourceSettings.getStringResourceLoaders().iterator();
      while (iter.hasNext())
      {
        IStringResourceLoader loader = (IStringResourceLoader)iter.next();
        string = loader.loadStringResource(component, key);
        if (string != null)
        {
          break;
        }
      }

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