// $Id: Gossip.java,v 1.6 2006/05/16 11:14:27 belaban Exp $package org.jgroups.protocols.pbcast;import org.jgroups.Address;import java.io.Serializable;import java.util.Vector;import java.net.UnknownHostException;public class Gossip implements Serializable {    Address sender=null;    long id=-1;    Digest digest=null;    Vector not_seen=null;     // members who haven't seen this specific gossip yet    Vector seen=new Vector(11); // members who have seen the gossip already    private static final long serialVersionUID = 7954243278668401185L;    public Gossip(Address obj, long id) {        sender=obj;        this.id=id;    }    public Gossip(Address obj, long id, Digest d, Vector not_seen) {        sender=obj;        this.id=id;        digest=d;        this.not_seen=not_seen;    }    /**     * Removes obj from not_seen list     */    public void removeFromNotSeenList(Address mbr) {        if(not_seen != null && mbr != null)            not_seen.removeElement(mbr);    }    public void addToSeenList(Address mbr) {        if(mbr != null && !seen.contains(mbr))            seen.addElement(mbr);    }    public int sizeOfNotSeenList() {        return not_seen == null ? 0 : not_seen.size();    }    public Vector getNotSeenList() {        return not_seen;    }    public Vector getSeenList() {        return seen;    }    public boolean equals(Object o) {        Gossip other=null;        if(sender != null && o != null) {            other=(Gossip)o;            return sender.equals(other.sender) && id == other.id;        }        return false;    }    public int hashCode() {        if(sender != null)            return sender.hashCode() + (int)id;        else            return (int)id;    }    public Gossip copy() {        Gossip ret=new Gossip(sender, id);        if(digest != null)            ret.digest=digest.copy();        if(not_seen != null)            ret.not_seen=(Vector)not_seen.clone();        if(seen != null)            ret.seen=(Vector)seen.clone();        return ret;    }    public String toString() {        StringBuffer sb=new StringBuffer();        sb.append("sender=");        if(sender != null)            sb.append(sender);        else            sb.append("<null>");        if(digest != null) sb.append(", digest=" + digest);        if(not_seen != null) sb.append(", not_seen=" + not_seen);        if(seen != null) sb.append(", seen=" + seen);        sb.append(", id=" + id);        return sb.toString();    }    public String shortForm() {        StringBuffer sb=new StringBuffer();        if(sender != null)            sb.append(sender);        else            sb.append("<null>");        sb.append("#" + id);        return sb.toString();    }    public static void main(String[] args) throws UnknownHostException {        Gossip id1, id2;        id1=new Gossip(new org.jgroups.stack.IpAddress("daddy", 4567), 23);        id2=new Gossip(new org.jgroups.stack.IpAddress("133.164.130.19", 4567), 23);        System.out.println(id1.equals(id2));    }}