2 * Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
4 * The Sun Project JXTA(TM) Software License
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7 * modification, are permitted provided that the following conditions are met:
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18 * developed by Sun Microsystems, Inc. for JXTA(TM) technology."
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20 * and wherever such third-party acknowledgments normally appear.
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48 * ====================================================================
50 * This software consists of voluntary contributions made by many individuals
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52 * http://www.jxta.org.
54 * This license is based on the BSD license adopted by the Apache Foundation.
56 package net.jxta.protocol;
59 import net.jxta.discovery.DiscoveryService;
60 import net.jxta.document.Document;
61 import net.jxta.document.MimeMediaType;
65 * This class defines the Discovery Service message "Query". The default
66 * behavior of this abstract class is simply a place holder for the generic
67 * resolver query fields.
69 * @see net.jxta.discovery.DiscoveryService
70 * @see net.jxta.protocol.DiscoveryResponseMsg
73 public abstract class DiscoveryQueryMsg {
75 private PeerAdvertisement peerAdvertisement = null;
78 * default threshold to limit the number of responses from one peer
80 private int threshold = 10;
83 * FIXME 20030227 bondolo@jxta.org not a great default...
85 private int type = DiscoveryService.PEER;
87 private String attr = null;
88 private String value = null;
91 * returns the Attr value
93 * @return String value of Attribute
95 public String getAttr() {
100 * Get the response type
102 * @return int PEER, or GROUP discovery type response
104 public int getDiscoveryType() {
109 * Write advertisement into a document. asMimeType is a mime media-type
110 * specification and provides the form of the document which is being
111 * requested. Two standard document forms are defined. "text/text" encodes
112 * the document in a form nice for printing out, and "text/xml" which
113 * provides an XML representation.
115 * @param asMimeType mime-type format requested
116 * @return Document representation of the document as an
119 public abstract Document getDocument(MimeMediaType asMimeType);
122 * returns the responding peer advertisement
124 * @return String handlername name
125 * @deprecated Peer Advertisement is available directly via
126 * {@link #getPeerAdvertisement()}.
129 public String getPeerAdv() {
130 if (null != peerAdvertisement) {
131 return peerAdvertisement.toString();
138 * returns the querying peer's advertisement
140 * @return peer advertisement of querier.
142 public PeerAdvertisement getPeerAdvertisement() {
143 return peerAdvertisement;
147 * returns the responding peer's advertisement
149 * @param newAdv peer advertisement of querier.
151 public void setPeerAdvertisement(PeerAdvertisement newAdv) {
152 peerAdvertisement = newAdv;
156 * Get the Threshold for number of responses
158 * @return int threshold
160 public int getThreshold() {
165 * returns the value of Attr
169 public String getValue() {
176 * @param attr attribute of the query
178 public void setAttr(String attr) {
183 * set the Response type whether it's peer, or group discovery
185 * @param type type of discovery
187 public void setDiscoveryType(int type) {
188 // FIXME 20030227 bondolo@jxta.org This should be value checked.
195 * @param threshold value to be set
197 public void setThreshold(int threshold) {
198 this.threshold = threshold;
204 * @param value value of the attribute to query
206 public void setValue(String value) {
211 * All messages have a type (in xml this is !doctype) which
212 * identifies the message
214 * @return String "jxta:DiscoveryQuery"
216 public static String getAdvertisementType() {
217 return "jxta:DiscoveryQuery";