Examples of org.apache.wicket.settings.IResourceSettings

org.apache.wicket.settings.IResourceSettings
Interface for resource related settings
resourcePollFrequency (defaults to no polling frequency) - Frequency at which resources should be polled for changes.
resourceFinder (classpath) - Set this to alter the search path for resources.
useDefaultOnMissingResource (defaults to true) - Set to true to return a default value if available when a required string resource is not found. If set to false then the throwExceptionOnMissingResource flag is used to determine how to behave. If no default is available then this is the same as if this flag were false
A ResourceStreamLocator - An Application's ResourceStreamLocator is used to find resources such as images or markup files. You can supply your own ResourceStreamLocator if your prefer to store your application's resources in a non-standard location (such as a different filesystem location, a particular JAR file or even a database) by overriding the getResourceLocator() method.
Resource Factories - Resource factories can be used to create resources dynamically from specially formatted HTML tag attribute values. For more details, see {@link IResourceFactory}, {@link org.apache.wicket.markup.html.image.resource.DefaultButtonImageResourceFactory} andespecially {@link org.apache.wicket.markup.html.image.resource.LocalizedImageResource}.
A Localizer The getLocalizer() method returns an object encapsulating all of the functionality required to access localized resources. For many localization problems, even this will not be required, as there are convenience methods available to all components: {@link org.apache.wicket.Component#getString(String key)} and{@link org.apache.wicket.Component#getString(String key,IModel model)}.
stringResourceLoaders - A chain of IStringResourceLoader instances that are searched in order to obtain string resources used during localization. By default the chain is set up to first search for resources against a particular component (e.g. page etc.) and then against the application.
@author Igor Vaynberg (ivaynberg)

   *             If resource not found and configuration dictates that exception should be thrown
   */
  public String getString(final String key, final Component< ? > component,
    final IModel< ? > model, final String defaultValue) throws MissingResourceException
  {
    final IResourceSettings resourceSettings = Application.get().getResourceSettings();


    boolean addedToPage = false;
    if (component != null)
    {
      if ((component instanceof Page) || null != component.findParent(Page.class))
      {
        addedToPage = true;
      }


      if (!addedToPage)
      {
        logger.warn(
          "Tried to retrieve a localized string for a component that has not yet been added to the page. "
            + "This can sometimes lead to an invalid or no localized resource returned. "
            + "Make sure you are not calling Component#getString() inside your Component's constructor. "
            + "Offending component: {}", component);
      }
    }




    String cacheKey = null;
    String string = null;


    // If this component is not yet added to page we do not want to check
    // cache as we can generate an invalid cache key
    if ((cache != null) && addedToPage)
    {
      cacheKey = getCacheKey(key, component);
    }


    // Value not found are cached as well (value = null)
    if ((cacheKey != null) && cache.containsKey(cacheKey))
    {
      string = getFromCache(cacheKey);
    }
    else
    {
      // Iterate over all registered string resource loaders until the
      // property has been found


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


      // Cache the result incl null if not found
      if (cacheKey != null)
      {
        putIntoCache(cacheKey, string);
      }
    }


    if ((string == null) && (defaultValue != null))
    {
      // Resource not found, so handle missing resources based on
      // application configuration and try the default value
      if (resourceSettings.getUseDefaultOnMissingResource())
      {
        string = defaultValue;
      }
    }


    // If a property value has been found, or a default value was given,
    // than replace the placeholder and we are done
    if (string != null)
    {
      return substitutePropertyExpressions(component, string, model);
    }


    if (resourceSettings.getThrowExceptionOnMissingResource())
    {
      AppendingStringBuffer message = new AppendingStringBuffer("Unable to find resource: " +
        key);
      if (component != null)
      {

View Full Code Here

   *             If resource not found and configuration dictates that exception should be thrown
   */
  public String getString(final String key, final Component component, final IModel model,
      final String defaultValue) throws MissingResourceException
  {
    final IResourceSettings resourceSettings = Application.get().getResourceSettings();


    boolean addedToPage = false;
    if (component != null)
    {
      if ((component instanceof Page) || null != component.findParent(Page.class))
      {
        addedToPage = true;
      }


      if (!addedToPage)
      {
        logger
            .warn(
                "Tried to retrieve a localized string for a component that has not yet been added to the page. "
                    + "This can sometimes lead to an invalid or no localized resource returned. "
                    + "Make sure you are not calling Component#getString() inside your Component's constructor. "
                    + "Offending component: {}", component);
      }
    }




    String cacheKey = null;
    String string = null;


    // If this component is not yet added to page we do not want to check
    // cache as we can generate an invalid cache key
    if (addedToPage)
    {
      cacheKey = getCacheKey(key, component);
    }


    // Value not found are cached as well (value = null)
    if (cacheKey != null && cache.containsKey(cacheKey))
    {
      string = getFromCache(cacheKey);
    }
    else
    {
      // Iterate over all registered string resource loaders until the
      // 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;
        }
      }


      // Cache the result incl null if not found
      if (cacheKey != null)
      {
        putIntoCache(cacheKey, string);
      }
    }


    if ((string == null) && (defaultValue != null))
    {
      // Resource not found, so handle missing resources based on
      // application configuration and try the default value
      if (resourceSettings.getUseDefaultOnMissingResource())
      {
        string = defaultValue;
      }
    }


    // If a property value has been found, or a default value was given,
    // than replace the placeholder and we are done
    if (string != null)
    {
      return substitutePropertyExpressions(component, string, model);
    }


    if (resourceSettings.getThrowExceptionOnMissingResource())
    {
      AppendingStringBuffer message = new AppendingStringBuffer("Unable to find resource: " +
          key);
      if (component != null)
      {

View Full Code Here

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