001/*
002 * #%L
003 * Netarchivesuite - common
004 * %%
005 * Copyright (C) 2005 - 2014 The Royal Danish Library, the Danish State and University Library,
006 *             the National Library of France and the Austrian National Library.
007 * %%
008 * This program is free software: you can redistribute it and/or modify
009 * it under the terms of the GNU Lesser General Public License as
010 * published by the Free Software Foundation, either version 2.1 of the
011 * License, or (at your option) any later version.
012 * 
013 * This program is distributed in the hope that it will be useful,
014 * but WITHOUT ANY WARRANTY; without even the implied warranty of
015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
016 * GNU General Lesser Public License for more details.
017 * 
018 * You should have received a copy of the GNU General Lesser Public
019 * License along with this program.  If not, see
020 * <http://www.gnu.org/licenses/lgpl-2.1.html>.
021 * #L%
022 */
023package dk.netarkivet.common.lifecycle;
024
025/**
026 * Extends the default construction -> deconstruction object life cycle with addition steps, giving users of
027 * <code>ComponentLifeCycle</code> better control over the component startup and shutdown phases.
028 */
029public interface ComponentLifeCycle {
030
031    /**
032     * Implements functionality for starting an instances of this <code>ComponentLifeCycle</code> object. This may be
033     * loading files, establish connections, initializing data, starting threads, etc.
034     */
035    void start();
036
037    /**
038     * The inverse of the <code>start()</code> method. Contains functionality for deallocation of ressources, clearing
039     * data, closing connections, stopping threads, etc
040     */
041    void shutdown();
042
043}