Java ClassPath Add addBundleToClassPath(String bundleId)

Description

add Bundle To Class Path

License

Open Source License

Declaration

private static void addBundleToClassPath(String bundleId) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2010, 2013 EclipseSource and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:/*from  w ww  . j  av a  2 s.c  om*/
 *    EclipseSource - initial API and implementation
 ******************************************************************************/

import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;

public class Main {
    private static final String BUNDLE_ID = "org.eclipse.rap.rwt.themes.test";

    private static void addBundleToClassPath(String bundleId) {
        ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader();
        if (systemClassLoader instanceof URLClassLoader) {
            URLClassLoader classLoader = (URLClassLoader) systemClassLoader;
            String path = getBundlePath(classLoader, bundleId);
            addFolderToClassPath(classLoader, path);
        }
    }

    private static String getBundlePath(URLClassLoader classLoader, String bundleId) {
        URL[] urls = classLoader.getURLs();
        String path = null;
        for (int i = 0; i < urls.length && path == null; i++) {
            String tempPath = urls[i].getPath();
            if (tempPath.contains(bundleId) && tempPath.indexOf(BUNDLE_ID) == -1) {
                int indexOfBin = tempPath.indexOf("bin");
                if (indexOfBin != -1) {
                    String protocol = urls[i].getProtocol();
                    path = protocol + ":" + tempPath.substring(0, indexOfBin);
                }
            }
        }
        return path;
    }

    private static void addFolderToClassPath(URLClassLoader classLoader, String path) {
        if (path != null) {
            Class<?> clazz = URLClassLoader.class;
            try {
                Class[] params = new Class[] { URL.class };
                Method method = clazz.getDeclaredMethod("addURL", params);
                method.setAccessible(true);
                Object[] url = new Object[] { new URL(path) };
                method.invoke(classLoader, url);
            } catch (Throwable e) {
                e.printStackTrace();
            }
        }
    }
}

Related

1. addAllFilesToExtClassLoaderClasspathWithReg(String sDir, String regexpFilter)
2. addClassPath(File filePath)
3. addClasspath(String path)
4. addClassPath2ClassLoader(ClassLoader cl, String path)
5. addClasspathEntries(Collection cpEntries)