BundleResourceLoader.java

   1 package org.argeo.cms.util;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.net.URL;
   6
   7 import org.argeo.cms.CmsException;
   8 import org.eclipse.rap.rwt.service.ResourceLoader;
   9 import org.osgi.framework.Bundle;
  10 import org.osgi.framework.BundleContext;
  11
  12 /** {@link ResourceLoader} implementation wrapping an {@link Bundle}. */
  13 public class BundleResourceLoader implements ResourceLoader {
  14         private final BundleContext bundleContext;
  15
  16         public BundleResourceLoader(BundleContext bundleContext) {
  17                 this.bundleContext = bundleContext;
  18         }
  19
  20         @Override
  21         public InputStream getResourceAsStream(String resourceName)
  22                         throws IOException {
  23                 // TODO deal with other bundles
  24                 Bundle bundle = bundleContext.getBundle();
  25                 // String location =
  26                 // bundle.getLocation().substring("initial@reference:".length());
  27                 // if (location.startsWith("file:")) {
  28                 // Path path = null;
  29                 // try {
  30                 // path = Paths.get(new URI(location));
  31                 // } catch (URISyntaxException e) {
  32                 // e.printStackTrace();
  33                 // }
  34                 // if (path != null) {
  35                 // Path resourcePath = path.resolve(resourceName);
  36                 // if (Files.exists(resourcePath))
  37                 // return Files.newInputStream(resourcePath);
  38                 // }
  39                 // }
  40                 URL res = bundle.getResource(resourceName);
  41                 if (res == null)
  42                         throw new CmsException("Resource " + resourceName
  43                                         + " not found in bundle " + bundle.getSymbolicName());
  44                 return res.openStream();
  45         }
  46
  47 }