1 files changed, 69 insertions, 0 deletions
diff --git a/ridljar/com/sun/star/comp/loader/RegistrationClassFinder.java b/ridljar/com/sun/star/comp/loader/RegistrationClassFinder.java
new file mode 100644
index 000000000..e7679da16
--- /dev/null
+++ b/ridljar/com/sun/star/comp/loader/RegistrationClassFinder.java
@@ -0,0 +1,69 @@
+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+package com.sun.star.comp.loader;
+
+import com.sun.star.lib.unoloader.UnoClassLoader;
+import com.sun.star.lib.util.WeakMap;
+import java.io.IOException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.jar.Attributes;
+
+final class RegistrationClassFinder {
+    public static Class<?> find(String locationUrl)
+        throws ClassNotFoundException, IOException
+    {
+        synchronized (map) {
+            Class<?> c = (Class<?>) WeakMap.getValue(map.get(locationUrl));
+            if (c != null) {
+                return c;
+            }
+        }
+        URL url = new URL(locationUrl);
+        Attributes attr = UnoClassLoader.getJarMainAttributes(url);
+        String name = attr == null
+            ? null : attr.getValue("RegistrationClassName");
+        if (name == null) {
+            return null;
+        }
+        ClassLoader cl1 = RegistrationClassFinder.class.getClassLoader();
+        ClassLoader cl2;
+        if (cl1 instanceof UnoClassLoader) {
+            cl2 = ((UnoClassLoader) cl1).getClassLoader(url, attr);
+        } else {
+            cl2 = URLClassLoader.newInstance(new URL[] { url }, cl1);
+        }
+        Class<?> c = cl2.loadClass(name);
+        synchronized (map) {
+            Class<?> c2 = (Class<?>) WeakMap.getValue(map.get(locationUrl));
+            if (c2 != null) {
+                return c2;
+            }
+            map.put(locationUrl, c);
+        }
+        return c;
+    }
+
+    private RegistrationClassFinder() {} // do not instantiate
+
+    private static final WeakMap map = new WeakMap();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */