/*
* Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
*
* The Sun Project JXTA(TM) Software License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by Sun Microsystems, Inc. for JXTA(TM) technology."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this software
* without prior written permission. For written permission, please contact
* Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA", nor may
* "JXTA" appear in their name, without prior written permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SUN
* MICROSYSTEMS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* JXTA is a registered trademark of Sun Microsystems, Inc. in the United
* States and other countries.
*
* Please see the license information page at :
* <http://www.jxta.org/project/www/license.html> for instructions on use of
* the license in source files.
*
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of Project JXTA. For more information on Project JXTA, please see
* http://www.jxta.org.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*/
package net.jxta.impl.protocol;
import net.jxta.credential.Credential;
import net.jxta.document.Document;
import net.jxta.document.Element;
import net.jxta.document.MimeMediaType;
import net.jxta.document.StructuredDocumentFactory;
import net.jxta.document.StructuredDocumentUtils;
import net.jxta.document.StructuredTextDocument;
import net.jxta.document.XMLElement;
import net.jxta.logging.Logging;
import net.jxta.membership.MembershipService;
import net.jxta.protocol.ResolverSrdiMsg;
import java.util.Enumeration;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* ResolverQuery provides the binding for the message to query other nodes
*/
public class ResolverSrdiMsgImpl extends ResolverSrdiMsg {
private final static Logger LOG = Logger.getLogger(ResolverSrdiMsgImpl.class.getName());
/**
* Description of the Field
*/
public final static String handlernameTag = "HandlerName";
/**
* Description of the Field
*/
public final static String credentialTag = "jxta:Cred";
/**
* Description of the Field
*/
public final static String payloadTag = "Payload";
/**
* Constructor for the ResolverSrdiMsgImpl object
*/
public ResolverSrdiMsgImpl() {}
/**
* Construct from a StructuredDocument
*
* @param root the underlying document
* @param membership membership service used to verify credentials
*/
public ResolverSrdiMsgImpl(Element root, MembershipService membership) {
if (!XMLElement.class.isInstance(root)) {
throw new IllegalArgumentException(getClass().getName() + " only supports XLMElement");
}
XMLElement doc = (XMLElement) root;
String doctype = doc.getName();
if (!getMessageType().equals(doctype)) {
throw new IllegalArgumentException(
"Could not construct : " + getClass().getName() + "from doc containing a " + doctype);
}
readIt(doc, membership);
}
/**
* Creates this object with a specific handler name, credential and payload
*
* @param handlerName the
* @param cred the credntial
* @param payload the payload
*/
public ResolverSrdiMsgImpl(String handlerName, Credential cred, String payload) {
setHandlerName(handlerName);
setPayload(payload);
setCredential(cred);
}
/**
* return the string representaion of this doc
*
* @return string representation of the message
*/
@Override
public String toString() {
StructuredTextDocument doc = (StructuredTextDocument) getDocument(MimeMediaType.XMLUTF8);
return doc.toString();
}
/**
* return a Document represetation of this object
*
* @param asMimeType type of message
* @return document
*/
@Override
public Document getDocument(MimeMediaType asMimeType) {
StructuredTextDocument adv = (StructuredTextDocument) StructuredDocumentFactory.newStructuredDocument(asMimeType
,
getMessageType());
if (adv instanceof XMLElement) {
((XMLElement) adv).addAttribute("xmlns:jxta", "http://jxta.org");
}
Element e;
e = adv.createElement(handlernameTag, getHandlerName());
adv.appendChild(e);
if (getCredential() != null) {
try {
StructuredDocumentUtils.copyElements(adv, adv, (getCredential()).getDocument(asMimeType));
} catch (Exception ce) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.log(Level.WARNING, "Got an Exception during credential creation ", ce);
}
}
}
e = adv.createElement(payloadTag, getPayload());
adv.appendChild(e);
return adv;
}
/**
* Parses an XML document into this object
*
* @param doc the underlying document
* @param membership used to parse credentails if any
*/
private void readIt(XMLElement doc, MembershipService membership) {
Enumeration elements = doc.getChildren();
while (elements.hasMoreElements()) {
XMLElement elem = (XMLElement) elements.nextElement();
if (elem.getName().equals(handlernameTag)) {
setHandlerName(elem.getTextValue());
continue;
}
// Set credential
if (elem.getName().equals(credentialTag)) {
Credential credential;
if (elem.getTextValue() != null) {
try {
credential = membership.makeCredential(elem);
setCredential(credential);
} catch (Exception ce) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.log(Level.WARNING, "Credential creation failed", ce);
}
}
}
continue;
}
// Set payload
if (elem.getName().equals(payloadTag)) {
setPayload(elem.getTextValue());
}
}
}
}