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 IResourceStream internalGetResourceStream(final String style, final Locale locale)
  {
    IResourceStreamLocator resourceStreamLocator = Application.get()
        .getResourceSettings()
        .getResourceStreamLocator();
    IResourceStream resourceStream = resourceStreamLocator.locate(getScope(), absolutePath, style, variation, locale, null, false);


    Class<?> realScope = getScope();
    String realPath = absolutePath;
    if (resourceStream instanceof IFixedLocationResourceStream)
    {

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{
  @Override
  public String getVersion(IStaticCacheableResource resource)
  {
    // get last modified timestamp of resource
    IResourceStream stream = resource.getCacheableResourceStream();


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


    final Time lastModified = stream.lastModifiedTime();


    // if no timestamp is available we can not provide a version
    if (lastModified == null)
    {
      return null;

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    if (finders == null)
    {
      finders = Application.get().getResourceSettings().getResourceFinders();
    }


    IResourceStream result;
    for (IResourceFinder finder : finders)
    {
      log.debug("Attempting to locate resource '{}' using finder'{}'", path, finder);
      result = finder.find(clazz, path);
      if (result != null)

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      extension, strict);
    while (iter.hasNext())
    {
      String newPath = iter.next();


      IResourceStream stream = locate(clazz, newPath);
      if (stream != null)
      {
        stream.setLocale(iter.getLocale());
        stream.setStyle(iter.getStyle());
        stream.setVariation(iter.getVariation());
        return stream;
      }
    }


    return null;

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  public IResourceStream locate(Class<?> clazz, String path)
  {
    CacheKey key = new CacheKey(clazz.getName(), path, null, 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)
  {
    CacheKey key = new CacheKey(scope.getName(), path, extension, 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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        return header;
      }


      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 occurred while rendering page: " +
          pageClassName + " using markup stream: " + streamName);

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    Class<?> containerClass = getClass();


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


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

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    String path = Packages.absolutePath(clazz, fileName);


    Application app = Application.get();


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


    if (stream == null)
    {
      // if default locator couldnt find the resource, than some fallback
      stream = new ResourceStreamLocator().locate(clazz, path);
    }


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


    setLastModified(stream.lastModifiedTime());


    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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  private List<IResourceStream> collectResourceStreams()
  {
    List<IResourceStream> ret = new ArrayList<IResourceStream>(providedResources.size());
    for (IReferenceHeaderItem curItem : providedResources)
    {
      IResourceStream stream = ((IStaticCacheableResource)curItem.getReference()
        .getResource()).getCacheableResourceStream();
      if (stream == null)
      {
        reportError(curItem.getReference(), "Cannot get resource stream for ");
        return null;

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