/* * ModuleLoader - A generic, policy-driven class loader. * Copyright (c) 2004, Richard S. Hall * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * *   * Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. *   * Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in *     the documentation and/or other materials provided with the *     distribution. *   * Neither the name of the ungoverned.org nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Contact: Richard S. Hall (heavy@ungoverned.org) * Contributor(s): ***/package org.ungoverned.moduleloader;/** * <p> * This interface represents a source for obtaining native libraries for a * given module via the module's class loader. The main goal of a library * source is to map a library name to a path in the file system. * </p> * <p> * All library sources are initialized before first usage via a call * to the <a href="#open()"><tt>LibrarySource.open()</tt></a> method and * are also deinitialized via a call to * <a href="#open()"><tt>LibrarySource.close()</tt></a>. Library sources * should be implemented such that they can be opened, closed, and then * re-opened. * </p> * @see org.ungoverned.moduleloader.Module * @see org.ungoverned.moduleloader.ModuleClassLoader**/public interface LibrarySource{    /**     * <p>     * This method initializes the library source. It is called when     * the associated module is added to the <tt>ModuleManager</tt>. It     * is acceptable for implementations to ignore duplicate calls to this     * method if the library source is already opened.     * </p>    **/    public void open();    /**     * <p>     * This method de-initializes the library source. It is called when     * the associated module is removed from the <tt>ModuleManager</tt> or     * when the module is reset by the <tt>ModuleManager</tt>.     * </p>    **/    public void close();    /**     * <p>     * Returns a file system path to the specified library.     * </p>     * @param name the name of the library that is being requested.     * @return a file system path to the specified library.     * @throws java.lang.IllegalStateException if the resource source has not     *         been opened.    **/    public String getPath(String name) throws IllegalStateException;}