Examples of org.apache.wicket.util.resource.IResourceStream

org.apache.wicket.util.resource.IResourceStream
Interface to a streamed resource. The resource stream can be retrieved by calling getInputStream(), but the resource should later be closed by calling close() on the IResourceStream (as opposed to calling close on the InputStream returned by getInputStream()).
Once a resource has been closed with a call to close(), it is normally possible to call getInputStream() again to retrieve a new input stream on the same resource.
Implementations of this interface are typically unsafe for use from multiple threads. @author Jonathan Locke

      {
        IPropertiesLoader loader = iter.next();
        String fullPath = path + "." + loader.getFileExtension();


        // If not in the cache than try to load properties
        IResourceStream resourceStream = context.getResourceStreamLocator()
          .locate(clazz, fullPath);
        if (resourceStream == null)
        {
          continue;
        }

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    Application app = Application.get();
    TextTemplateCache cache = (TextTemplateCache)app.getMetaData(TEXT_TEMPLATE_CACHE_KEY);
    // TODO implement cache


    // first try default class loading locator to find the resource
    IResourceStream stream = new ResourceStreamLocator().locate(clazz, path);


    if (stream == null)
    {
      // if default locator couldnt find the resource allow the application specific one to
      // try
      stream = Application.get().getResourceSettings().getResourceStreamLocator().locate(
        clazz, path);
    }


    if (stream == null)
    {
      throw new IllegalArgumentException("resource " + fileName + " not found for scope " +
        clazz + " (path = " + path + ")");
    }


    try
    {
      if (encoding != null)
      {
        buffer.append(Streams.readString(stream.getInputStream(), encoding));
      }
      else
      {
        buffer.append(Streams.readString(stream.getInputStream()));
      }
    }
    catch (IOException e)
    {
      throw new RuntimeException(e);
    }
    catch (ResourceStreamNotFoundException e)
    {
      throw new RuntimeException(e);
    }
    finally
    {
      try
      {
        stream.close();
      }
      catch (IOException e)
      {
        log.error(e.getMessage(), e);
      }

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            .decode(request);
          // Set parameters from servlet request
          resource.setParameters(rp.getParameters());


          // Get resource stream
          IResourceStream stream = resource.getResourceStream();


          // Get last modified time from stream
          Time time = stream.lastModifiedTime();


          try
          {
            stream.close();
          }
          catch (IOException e)
          {
            // ignore
          }

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      }
      else
      {
        final Page page = container.getPage();
        final String pageClassName = (page != null) ? page.getClass().getName() : "unknown";
        final IResourceStream stream = markupStream.getResource();
        final String streamName = (stream != null) ? stream.toString() : "unknown";


        throw new MarkupException(
          "Mis-placed <wicket:head>. <wicket:head> must be outside of <wicket:panel>, <wicket:border>, and <wicket:extend>. Error occured while rendering page: " +
            pageClassName + " using markup stream: " + streamName);
      }

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   *            throw an AbortException when resource does not exist
   */
  public IResourceStream getResourceStream(boolean failOnError)
  {
    // Locate resource
    IResourceStream resourceStream = Application.get()
      .getResourceSettings()
      .getResourceStreamLocator()
      .locate(getScope(), absolutePath, style, locale, null);


    // Check that resource was found
    if (resourceStream == null)
    {
      if (!failOnError)
      {
        // Do not abort the request, as we are not yet serving the resource
        return null;
      }


      String msg = "Unable to find package resource [path = " + absolutePath + ", style = " +
        style + ", locale = " + locale + "]";
      log.warn(msg);
      if (RequestCycle.get() instanceof WebRequestCycle)
      {
        throw new AbortWithWebErrorCodeException(HttpServletResponse.SC_NOT_FOUND, msg);
      }
      else
      {
        throw new AbortException();
      }
    }


    locale = resourceStream.getLocale();


    if (resourceStream != null)
    {
      lastModifiedTime = resourceStream.lastModifiedTime();
      lastModifiedTimeUpdate = System.currentTimeMillis();
    }


    return resourceStream;
  }

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    /**
     * @return compressed content
     */
    private byte[] getCompressedContent()
    {
      IResourceStream stream = getOriginalResourceStream();
      try
      {
        byte ret[];
        if (cache != null)
        {
          ret = (byte[])cache.get();
          if (ret != null && timeStamp != null)
          {
            if (timeStamp.equals(stream.lastModifiedTime()))
            {
              return ret;
            }
          }
        }
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        GZIPOutputStream zout = new GZIPOutputStream(out);
        Streams.copy(stream.getInputStream(), zout);
        zout.close();
        stream.close();
        ret = out.toByteArray();
        timeStamp = stream.lastModifiedTime();
        cache = new SoftReference(ret);
        return ret;
      }
      catch (IOException e)
      {

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    Class containerClass = getClass();


    while (!(containerClass.equals(MarkupComponentBorder.class)))
    {
      String path = containerClass.getName().replace('.', '/');
      IResourceStream resourceStream = locator.locate(containerClass, path, style, locale,
        markupType);


      // Did we find it already?
      if (resourceStream != null)
      {

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        log.debug("Load markup: cacheKey=" + cacheKey);
      }


      // Who is going to provide the markup resource stream?
      // And ask the provider to locate the markup resource stream
      final IResourceStream resourceStream = getMarkupResourceStreamProvider(container).getMarkupResourceStream(
        container, containerClass);


      // Found markup?
      if (resourceStream != null)
      {

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    Properties properties = (Properties)propertiesCache.get(path);


    if (properties == null)
    {
      // If not in the cache than try to load properties
      IResourceStream stream = application.getResourceSettings()
        .getResourceStreamLocator()
        .locate(clazz, path);
      if (stream != null)
      {
        // Load the properties from the stream

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  }


  @Override
  public Serializable getCacheKey()
  {
    IResourceStream stream = getCacheableResourceStream();


    // if resource stream can not be found do not cache
    if (stream == null)
    {
      return null;
    }


    return new CacheKey(scopeName, absolutePath, stream.getLocale(), stream.getStyle(),
      stream.getVariation());
  }

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