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

  private MarkupResourceStream newMarkupResourceStream(final IResourceStreamLocator locator,
    final Class<?> cls, final String style, final String variation, final Locale locale,
    final String extension)
  {
    final String path = cls.getName().replace('.', '/');
    final IResourceStream resource = locator.locate(cls, path, style, variation, locale,
      extension, false);


    return new MarkupResourceStream(resource, null, null);
  }

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        return header;
      }
      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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      {
        IPropertiesLoader loader = iter.next();
        String fullPath = path + loader.getFileExtension();


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

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    // hierarchy up to MarkupContainer to find the containers markup
    // resource.
    while (containerClass != MarkupContainer.class)
    {
      String path = containerClass.getName().replace('.', '/');
      IResourceStream resourceStream = locator.locate(container.getClass(), path, style,
        variation, locale, ext, false);


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

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        container.getClass().getName() + ", but is a " + clazz.getName());
    }


    // 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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  public IResourceStream locate(Class<?> clazz, String path)
  {
    Key key = new Key(clazz.getName(), path, null, null, null);
    IResourceStreamReference resourceStreamReference = cache.get(key);


    final IResourceStream result;
    if (resourceStreamReference == null)
    {
      result = delegate.locate(clazz, path);


      updateCache(key, result);

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    Locale locale, String extension, boolean strict)
  {
    Key key = new Key(scope.getName(), path, locale, style, variation);
    IResourceStreamReference resourceStreamReference = cache.get(key);


    final IResourceStream result;
    if (resourceStreamReference == null)
    {
      result = delegate.locate(scope, path, style, variation, locale, extension, strict);


      updateCache(key, result);

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    final ResourceResponse resourceResponse = new ResourceResponse();


    if (resourceResponse.dataNeedsToBeWritten(attributes))
    {
      // get resource stream
      final IResourceStream resourceStream = getResourceStream();


      // bail out if resource stream could not be found
      if (resourceStream == null)
        return sendResourceError(resourceResponse, HttpServletResponse.SC_NOT_FOUND,
          "Unable to find resource");


      // set Content-Type (may be null)
      resourceResponse.setContentType(resourceStream.getContentType());


      // add Last-Modified header (to support HEAD requests and If-Modified-Since)
      final Time lastModified = resourceStream.lastModifiedTime();


      if (lastModified != null)
        resourceResponse.setLastModified(lastModified.toDate());


      try
      {
        // read resource data
        final byte[] bytes;


        try
        {
          bytes = IOUtils.toByteArray(resourceStream.getInputStream());
        }
        finally
        {
          resourceStream.close();
        }


        // send Content-Length header
        resourceResponse.setContentLength(bytes.length);

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  private StreamInfo lookupStream(IResourceStreamLocator locator, Locale locale, String style,
    String variation)
  {
    String absolutePath = Packages.absolutePath(getScope(), getName());
    IResourceStream stream = locator.locate(getScope(), absolutePath, style, variation, locale,
      null, true);


    if (stream == null)
      return null;

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  private List<IResourceStream> collectResourceStreams()
  {
    List<IResourceStream> ret = new ArrayList<IResourceStream>(providedResources.size());
    for (IReferenceHeaderItem curItem : providedResources)
    {
      IResourceStream stream = ((PackageResource)curItem.getReference().getResource()).getResourceStream();
      if (stream == null)
        return null;


      ret.add(stream);
    }

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