1 // Copyright (c) 1999-2004 Brian Wellington (bwelling (at) xbill.org) 2 3 package org.xbill.DNS; 4 5 /** 6 * A special-purpose thread used by Resolvers (both SimpleResolver and 7 * ExtendedResolver) to perform asynchronous queries. 8 * 9 * @author Brian Wellington 10 */ 11 12 class ResolveThread extends Thread { 13 14 private Message query; 15 private Object id; 16 private ResolverListener listener; 17 private Resolver res; 18 19 /** Creates a new ResolveThread */ 20 public 21 ResolveThread(Resolver res, Message query, Object id, 22 ResolverListener listener) 23 { 24 this.res = res; 25 this.query = query; 26 this.id = id; 27 this.listener = listener; 28 } 29 30 31 /** 32 * Performs the query, and executes the callback. 33 */ 34 public void 35 run() { 36 try { 37 Message response = res.send(query); 38 listener.receiveMessage(id, response); 39 } 40 catch (Exception e) { 41 listener.handleException(id, e); 42 } 43 } 44 45 } 46
