AbsModuleClassLoader.java

package org.objectweb.jonas_lib.loader;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.List;
import java.util.Iterator;

import org.objectweb.jonas_lib.loader.factory.URLFactory;
import org.objectweb.jonas_lib.loader.locator.Locator;

public abstract class AbsModuleClassLoader extends URLClassLoader {

    private URLFactory[] factories;

    private Locator[] locators;

    private URL[] bases;

    public AbsModuleClassLoader(URL[] modules) throws IOException {
        super(new URL[0]);
        bases = modules;
        init();
    }

    public AbsModuleClassLoader(URL[] modules, ClassLoader parent) throws IOException {
        super(new URL[0], parent);
        bases = modules;
        init();
    }

    protected void init() throws IOException {
        factories = new URLFactory[bases.length];
        locators = new Locator[bases.length];

        // Create factories and locator for each URL
        for (int i = 0; i < bases.length; i++) {

            factories[i] = URLFactory.getFactory(bases[i]);
            locators[i] = Locator.getLocator(bases[i]);
        }
    }

    protected void addInRepository(String location) throws IOException {
        // test existence in each base URL
        for (int i = 0; i < bases.length; i++) {
            if (locators[i].hasDirectory(location)
                || locators[i].hasFile(location)) {
                addURL(factories[i].getURL(location));
            }
        }
    }

    protected void addContentInRepository(String location) throws IOException {
        // test existence in each base URL
        for (int i = 0; i < bases.length; i++) {
            List list = locators[i].listContent(location);
            for (Iterator l = list.iterator(); l.hasNext();) {
                addURL(factories[i].getURL((String) l.next()));
            }
        }
    }

    public String toString() {
        StringBuffer sb = new StringBuffer();

        sb.append("classloader : " + getClass().getName() + "\n");
        sb.append("\tmodules bases (not in loader!) : \n");
        for (int i = 0; i < bases.length; i++) {
            sb.append("\t\t -" + bases[i] + "\n");
        }
        sb.append("\trepositories :\n");
        URL[] rep = getURLs();
        for (int i = 0; i < rep.length; i++) {
            sb.append("\t\t -" + rep[i] + "\n");
        }
        sb.append("\tparent : " + getParent() + "\n");

        return sb.toString();
    }

    public URL[] getBases() {
        return bases;
    }

    public String getClasspath() {
        URL[] urls = getURLs();
        StringBuffer cp = new StringBuffer();
        for (int i = 0; i < urls.length; i++) {
            String url = urls[i].getFile();
            // do not add URL with !/ inside
            if (url.indexOf("!/") == -1) {
                cp.append(File.pathSeparator + url);
            }
        }
        return  cp.toString();
    }
}

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