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The JXTA Shell is a sample application that demonstrates key concepts of JXTA JXSE. The JXTA Shell enables users to interact with the JXTA platform through a command-line interpreter. Much like the UNIX® shell, the JXTA Shell is useful for accessing and managing core platform objects (peers, groups, pipes), debugging communications problems, checking the status of peers and/or peer groups, and communicating with other JXTA services and applications. As in UNIX®, the JXTA shell allows users to "pipe" shell commands together connecting commands "on-the-fly." Pipes in Project JXTA are useful for collecting information at one peer and perhaps processing the command at another.

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/*
 * 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
 * .
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: share.java,v 1.17 2007/02/09 23:12:51 hamada Exp $
 */
package net.jxta.impl.shell.bin.share;

import net.jxta.discovery.DiscoveryService;
import net.jxta.document.Advertisement;
import net.jxta.document.AdvertisementFactory;
import net.jxta.document.StructuredTextDocument;
import net.jxta.impl.shell.ShellApp;
import net.jxta.impl.shell.ShellEnv;
import net.jxta.impl.shell.ShellObject;
import net.jxta.peergroup.PeerGroup;

/**
 * share Shell command
 * 

* XXX: * This command should be a Codat Sharing Service (CMS). Since at this time * there is no available CMS, it uses the internal Core's Codat Sharing mechanism. * This must be changed as soon as there is an available CMS. * [email protected] */ public class share extends ShellApp { private DiscoveryService disco = null; ShellEnv env; public share() { } @Override public void stopApp() { } private int syntaxError() { println("Usage: share "); return ShellApp.appParamError; } public int startApp(String[] args) { if ((args == null) || (args.length != 1)) { return syntaxError(); } env = getEnv(); String name = args[0]; /* * get the std group */ ShellObject obj = env.get("stdgroup"); PeerGroup group = (PeerGroup) obj.getObject(); disco = group.getDiscoveryService(); obj = env.get(name); if (obj == null) { println("share: cannot access " + name); return ShellApp.appMiscError; } Advertisement adv; try { // only publish in group, may need to revisit this adv = AdvertisementFactory.newAdvertisement((StructuredTextDocument) obj.getObject()); publishAdv(adv); } catch (Exception e) { println("share: " + name + " is not a proper Document"); return ShellApp.appMiscError; } return ShellApp.appNoError; } private void publishAdv(Advertisement adv) { try { disco.publish(adv); } catch (Exception ignored) { } } @Override public String getDescription() { return "Share an advertisement"; } @Override public void help() { println("NAME"); println(" share - share an advertisement"); println(" "); println("SYNOPSIS"); println(" share "); println(" "); println("DESCRIPTION"); println(" "); println("share an advertisement document in the current peer group."); println("The document is made visible to all the members of the peer group."); println("Advertisements are XML documents that can represent any JXTA objects"); println("advertisement, environment variables). Documents are searched"); println("either in the local peer cache or remotely via the 'search' command."); println(" "); println("OPTIONS"); println(" "); println("EXAMPLE"); println(" "); println(" JXTA>share mydoc "); println(" "); println("This example shares the document 'mydoc' into the current peer group."); println(" "); println("SEE ALSO"); println(" peers search"); } }





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