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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2173 b35dd754-fafc-0310-a699-88a17e54d16e
198 lines
6.5 KiB
Java
198 lines
6.5 KiB
Java
/**
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* $RCSfile$
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* $Revision$
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* $Date$
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*
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* Copyright (C) 2002-2003 Jive Software. All rights reserved.
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* ====================================================================
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* The Jive Software License (based on Apache Software License, Version 1.1)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by
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* Jive Software (http://www.jivesoftware.com)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Smack" and "Jive Software" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please
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* contact webmaster@jivesoftware.com.
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*
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* 5. Products derived from this software may not be called "Smack",
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* nor may "Smack" appear in their name, without prior written
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* permission of Jive Software.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*/
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package org.jivesoftware.smack.packet;
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/**
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* The base IQ (Info/Query) packet. IQ packets are used to get and set information
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* on the server, including authentication, roster operations, and creating
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* accounts. Each IQ packet has a specific type that indicates what type of action
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* is being taken: "get", "set", "result", or "error".<p>
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*
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* IQ packets can contain a single child element that exists in a specific XML
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* namespace. The combination of the element name and namespace determines what
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* type of IQ packet it is. Some example IQ subpacket snippets:<ul>
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*
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* <li><query xmlns="jabber:iq:auth"> -- an authentication IQ.
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* <li><query xmlns="jabber:iq:private"> -- a private storage IQ.
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* <li><pubsub xmlns="http://jabber.org/protocol/pubsub"> -- a pubsub IQ.
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* </ul>
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*
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* @author Matt Tucker
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*/
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public abstract class IQ extends Packet {
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private Type type = Type.GET;
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/**
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* Returns the type of the IQ packet.
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*
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* @return the type of the IQ packet.
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*/
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public Type getType() {
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return type;
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}
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/**
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* Sets the type of the IQ packet.
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*
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* @param type the type of the IQ packet.
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*/
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public void setType(Type type) {
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if (type == null) {
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this.type = Type.GET;
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}
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else {
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this.type = type;
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}
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}
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public String toXML() {
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StringBuffer buf = new StringBuffer();
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buf.append("<iq ");
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if (getPacketID() != null) {
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buf.append("id=\"" + getPacketID() + "\" ");
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}
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if (getTo() != null) {
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buf.append("to=\"").append(getTo()).append("\" ");
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}
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if (getFrom() != null) {
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buf.append("from=\"").append(getFrom()).append("\" ");
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}
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if (type == null) {
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buf.append("type=\"get\">");
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}
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else {
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buf.append("type=\"").append(getType()).append("\">");
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}
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// Add the query section if there is one.
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String queryXML = getChildElementXML();
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if (queryXML != null) {
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buf.append(queryXML);
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}
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// Add the error sub-packet, if there is one.
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XMPPError error = getError();
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if (error != null) {
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buf.append(error.toXML());
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}
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buf.append("</iq>");
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return buf.toString();
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}
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/**
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* Returns the sub-element XML section of the IQ packet, or <tt>null</tt> if there
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* isn't one.<p>
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*
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* Extensions of this class must override this method.
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*
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* @return the child element section of the IQ XML.
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*/
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public abstract String getChildElementXML();
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/**
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* A class to represent the type of the IQ packet. The types are:
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*
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* <ul>
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* <li>IQ.Type.GET
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* <li>IQ.Type.SET
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* <li>IQ.Type.RESULT
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* <li>IQ.Type.ERROR
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* </ul>
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*/
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public static class Type {
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public static final Type GET = new Type("get");
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public static final Type SET = new Type("set");
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public static final Type RESULT = new Type("result");
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public static final Type ERROR = new Type("error");
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/**
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* Converts a String into the corresponding types. Valid String values
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* that can be converted to types are: "get", "set", "result", and "error".
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*
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* @param type the String value to covert.
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* @return the corresponding Type.
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*/
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public static Type fromString(String type) {
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if (type == null) {
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return null;
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}
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type = type.toLowerCase();
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if (GET.toString().equals(type)) {
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return GET;
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}
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else if (SET.toString().equals(type)) {
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return SET;
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}
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else if (ERROR.toString().equals(type)) {
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return ERROR;
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}
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else if (RESULT.toString().equals(type)) {
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return RESULT;
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}
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else {
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return null;
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}
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}
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private String value;
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private Type(String value) {
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this.value = value;
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}
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public String toString() {
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return value;
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}
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}
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}
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