SSDM-3593: Neglecting non-numerical folders by CorePluginScanner when loading all plugin versions.

SVN: 38143

openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/coreplugin/CorePluginScanner.java

@@ -149,6 +149,10 @@ public class CorePluginScanner implements ICorePluginResourceLoader
         List<CorePlugin> allVersionsForPlugin = new ArrayList<CorePlugin>();
         for (File versionDir : listFiles(pluginRootDir))
         {
+            if (isNumber(versionDir) == false)
+            {
+                continue;
+            }
             if (isValidVersionDir(versionDir))
             {
                 CorePlugin pluginVersion = createPlugin(pluginRootDir, versionDir);
@@ -226,6 +230,18 @@ public class CorePluginScanner implements ICorePluginResourceLoader
             return -1;
         }
     }
+    
+    private boolean isNumber(File versionDir)
+    {
+        try
+        {
+            Integer.parseInt(versionDir.getName());
+            return true;
+        } catch (NumberFormatException nfe)
+        {
+            return false;
+        }
+    }
 
     private File getFolderForPlugin(CorePlugin plugin)
     {