xmppcapabilitiesmarshal.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 132 行

/*
 * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.xmpp.caps;

import com.caucho.vfs.*;
import com.caucho.xmpp.*;
import java.io.*;
import java.util.*;
import java.util.logging.*;
import javax.xml.stream.*;

/**
 * capabilities
 *
 * XEP-0115: http://www.xmpp.org/extensions/xep-0115.html
 *
 * <code><pre>
 * namespace = http://jabber.org/protocol/caps
 *
 * element c {
 *   attribute ext?,
 *   attribute hash,
 *   attribute node,
 *   attribute ver
 * }
 * </pre></code>
 */
public class XmppCapabilitiesMarshal extends AbstractXmppMarshal {
  private static final Logger log
    = Logger.getLogger(XmppCapabilitiesMarshal.class.getName());
  private static final boolean _isFinest = log.isLoggable(Level.FINEST);

  /**
   * Returns the namespace uri for the XMPP stanza value
   */
  public String getNamespaceURI()
  {
    return "http://jabber.org/protocol/caps";
  }

  /**
   * Returns the local name for the XMPP stanza value
   */
  public String getLocalName()
  {
    return "c";
  }

  /**
   * Returns the java classname of the object
   */
  public String getClassName()
  {
    return Capabilities.class.getName();
  }
  
  /**
   * Serializes the object to XML
   */
  public void toXml(XmppStreamWriter out, Serializable object)
    throws IOException, XMLStreamException
  {
    Capabilities caps = (Capabilities) object;

    out.writeStartElement("", getLocalName(), getNamespaceURI());
    out.writeNamespace("", getNamespaceURI());

    if (caps.getExt() != null)
      out.writeAttribute("ext", caps.getExt());

    if (caps.getHash() != null)
      out.writeAttribute("hash", caps.getHash());

    if (caps.getNode() != null)
      out.writeAttribute("node", caps.getNode());

    if (caps.getVer() != null)
      out.writeAttribute("ver", caps.getVer());
    
    out.writeEndElement(); // </c>
  }
  
  /**
   * Deserializes the object from XML
   */
  public Serializable fromXml(XmppStreamReader in)
    throws IOException, XMLStreamException
  {
    boolean isFinest = log.isLoggable(Level.FINEST);

    String ext = in.getAttributeValue(null, "ext");
    String hash = in.getAttributeValue(null, "hash");
    String node = in.getAttributeValue(null, "node");
    String ver = in.getAttributeValue(null, "ver");

    Capabilities caps = new Capabilities(hash, node, ver);

    caps.setExt(ext);

    skipToEnd(in, "c");

    return caps;
  }
}