pubsubentity.java

一款即时通讯软件

package edu.ou.kmi.buddyspace.plugins.pubsub.xml;

/*
 * PubsubEntity.java
 *
 * Project: BuddySpace
 * (C) Copyright Knowledge Media Institute 2003
 *
 *
 * Created on 9 October 2003, 18:37
 */

import java.util.*;
import org.jabber.jabberbeans.util.*;
import org.jabber.jabberbeans.*;
import org.jabber.jabberbeans.Extension.*;

/**
 * <code>PubsubEntity</code> contains &lt;entity&gt tag
 * from pubsub.
 *
 * @author  Jiri Komzak, Knowledge Media Institute, Open University, United Kingdom
 */
public class PubsubEntity
    extends XMLData
{
    /** Node name */
    private String node;
    /** JID */
    private JID jid;
    /** Subscription */
    private String subscription;
    /** Affilitation */
    private String affiliation;
    /** Subscribe-options */
    private PubsubSubscribeOpt subOpt;
    /** Error code */
    private String errCode;
    /** Error text */
    private String errText;
    
    /**
     * Creates a new <code>PubsubEntity</code> instance, based on the builder
     * state.
     *
     * @param builder an <code>PubsubEntityBuilder</code> value
     * @exception InstantiationException if malformed or insufficient data is
     * in the builder.
     */
    public PubsubEntity(PubsubEntityBuilder builder)
        throws InstantiationException
    {
        subscription = builder.getSubscription();
        affiliation = builder.getAffiliation();
        node = builder.getNode();
        subOpt = builder.getSubscribeOpt();
        jid = builder.getJID();
        errCode = builder.getErrorCode();
        errText = builder.getErrorText();
    }
    
    
    public String getNode() {
        return node;
    }
    
    public String getSubscription() {
        return subscription;
    }
    
    public String getAffiliation() {
        return affiliation;
    }
    
    public XMLData getSubscribeOpt() {
        return subOpt;
    }
    
    public JID getJID() {
        return jid;
    }
    
    public String getErrorCode() {
        return errCode;
    }
    
    public String getErrorText() {
        return errText;
    }
    
    
    /**
     * <code>appendItem</code> appends the XML representation of the
     * current packet data to the specified <code>StringBuffer</code>.
     *
     * @param retval The <code>StringBuffer</code> to append to
     */
    public void appendItem(StringBuffer retval)
    {
	retval.append("<entity");
        
        if (node != null)
            retval.append(" node='" + node + "'");
        if (jid != null)
            retval.append(" jid='" + jid.toString() + "'");
        if (subscription != null)
            retval.append(" subscription='" + subscription + "'");
        if (affiliation != null)
            retval.append(" affiliation='" + affiliation + "'");
        
        boolean emptyTag = true;
        
        if (subOpt != null) {
            retval.append(">");
            emptyTag = false;
            subOpt.appendItem(retval);
        }
        if (errCode != null || errText != null) {
            if (emptyTag)
                retval.append(">");
            emptyTag = false;
            retval.append("<error");
            if (errCode != null)
                retval.append(" code='" + errCode + "'");
            if (errText != null)
                retval.append(">" + errText + "</error>");
            else
                retval.append("/>");
        }
        if (!emptyTag)
            retval.append("</entity>");
        else
            retval.append("/>");
    }
}