+ public static Resource getParent(Resource res) {\r
+ try {\r
+ if (res.getURL().getPath().equals("/"))\r
+ return null;\r
+ \r
+ String urlStr = res.getURL().toString();\r
+ if (urlStr.charAt(urlStr.length() - 1) == '/')\r
+ urlStr = urlStr.substring(0, urlStr.length() - 2);\r
+\r
+ String parentUrlStr = urlStr.substring(0, urlStr.lastIndexOf('/'));\r
+ return new DefaultResourceLoader(Thread.currentThread()\r
+ .getContextClassLoader()).getResource(parentUrlStr + '/');\r
+ } catch (IOException e) {\r
+ throw new SlcException("Cannot get parent for resource " + res, e);\r
+ }\r
+ }\r
+\r
+ public static String extractRelativePath(Resource ancestor, Resource child) {\r
+ try {\r
+ \r
+ return ancestor.getURI().relativize(child.getURI()).toString();\r
+ } catch (IOException e) {\r
+ throw new SlcException("Cannot extract relative path of " + child\r
+ + " based on " + ancestor, e);\r
+ }\r
+ }\r
+\r