Locator.java

package org.objectweb.jonas_lib.loader.locator;

import java.util.List;
import java.net.URL;
import java.io.IOException;

public abstract class Locator {

    public abstract boolean hasFile(String path);

    public abstract boolean hasDirectory(String path);

    public abstract List listContent(String path);

    public static Locator getLocator(URL url) throws IOException {

        String path = url.getPath();
        if (path.matches(".*\\..ar")) {
            // jar detected if path ends with .?ar (*.jar, *.war, *.ear)
            return new JarFileLocator(url);
        } else if (path.endsWith("/")) {
            // directory detected if url ends with a separator /
            return new DirLocator(url);
        } else {
            String err = "Unsupported URL '" + url + "' support "
                + "only jar archive and directory";
            throw new IOException(err);
        }
    }
}

---