cms.java

jxta-cms-src-2.4.zip 是官网上的比较稳定的CMS源代码。目前是最稳定的高版本。

/*
 * Copyright (c) 2001 Sun Microsystems, Inc.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *       Sun Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
 *    permission of Sun.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 SUN MICROSYSTEMS OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: cms.java,v 1.3 2004/04/14 19:56:33 bondolo Exp $
 *
 */


package net.jxta.impl.shell.bin.cms;

import net.jxta.impl.shell.*;


import java.io.*;
import java.util.*;
import java.net.URL;
import java.net.MalformedURLException;

import net.jxta.pipe.*;
import net.jxta.document.*;
import net.jxta.exception.*;
import net.jxta.peergroup.*;

import net.jxta.share.*;


/**
 * share Shell command - CMS extension to Shell
 *
 * share command is to share any kind of contents with
 * others in a peer group. Its an extension to shell commands
 * using Content Management Service.
 */

public class cms extends ShellApp {

    ShellEnv env;

    /**
     *  {@inheritDoc}
     **/
    public int startApp (String[] args) {
        env = getEnv();

        // get the std group
        ShellObject obj = env.get("stdgroup");
        PeerGroup group = (PeerGroup)obj.getObject();

        // get the cms for this group
        ContentManager contentManager = cms.getCMS(group).getContentManager();

        return ShellApp.appNoError;
    }

    /**
     *  {@inheritDoc}
     **/
    public String getDescription() {
        return "Initialize cms and show its status";
    }
    
    /**
     *  {@inheritDoc}
     **/
    public void help() {
        println( "NAME" );
        println( "     cms - " + getDescription() );
        println( " " );
        println( "SYNOPSIS" );
        println( "     cms");
        println( " ");
        println( "DESCRIPTION");
        println( " ");
        println( "Initialize cms and show its status");
        println( " " );
        println( "OPTIONS" );
        println( " " );
        println( "EXAMPLE" );
        println( " " );
        println( "SEE ALSO" );
        println( "    share unshare ls rcp" );
    }


    public static final String IP2P_DIRNAME = "IP2P";
    private static Hashtable cmsTable = new Hashtable();

    public static CMS getCMS(PeerGroup group) {
        // check if the cms is already started
        CMS groupCMS = (CMS)cmsTable.get(CMS.getGroupId(group));

        if (null == groupCMS) {
            // create a new cms for this peergroup
            groupCMS = new CMS();

            try {
                groupCMS.init(group, null, null);
            } catch (PeerGroupException e) {
                e.printStackTrace ();
            }

            groupCMS.startApp(new File(getGroupDir(group), CMS.DEFAULT_DIR));

            if (null != groupCMS) {
                cmsTable.put(CMS.getGroupId(group), groupCMS);
            }
        }

        return groupCMS;
    }

    private static File getGroupDir(PeerGroup pg) {
        File dir = null;

        // make sure the root directory exists
        File rootDir = new File(IP2P_DIRNAME);
        if (!rootDir.exists()) {
            rootDir.mkdir();
        }

        dir = new File(rootDir, CMS.getGroupId(pg));
        if (!dir.exists()) {
            dir.mkdir();
        }

        return dir;
    }
}