/*
* 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.document.Advertisement;
import net.jxta.document.AdvertisementFactory;
import net.jxta.document.Attribute;
import net.jxta.document.Document;
import net.jxta.document.Element;
import net.jxta.document.MimeMediaType;
import net.jxta.document.StructuredDocument;
import net.jxta.document.StructuredDocumentUtils;
import net.jxta.document.XMLElement;
import net.jxta.id.IDFactory;
import net.jxta.logging.Logging;
import net.jxta.platform.ModuleClassID;
import net.jxta.protocol.ModuleClassAdvertisement;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Enumeration;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Provides XML serialization support for ModuleClassAdvertisement matching the
* schema defined by the JXTA Core Specification.
* <p/>
* <p/><pre>
* <xs:complexType name="MCA">
* <xs:sequence>
* <xs:element name="MCID" type="jxta:JXTAID" />
* <xs:element name="Name" type="xs:string" minOccurs="0" />
* <xs:element name="Desc" type="xs:anyType" minOccurs="0" />
* </xs:sequence>
* </xs:complexType>
* </pre>
*
* @see net.jxta.document.Advertisement
* @see net.jxta.protocol.ModuleSpecAdvertisement
* @see <a href="https://jxta-spec.dev.java.net/nonav/JXTAProtocols.html#advert-mca> target='_blank'>JXTA Protocols Specification - Advertisements : Module Class Advertisement</a>
*/
public class ModuleClassAdv extends ModuleClassAdvertisement {
/**
* Logger
*/
private static final Logger LOG = Logger.getLogger(ModuleClassAdv.class.getName());
private static final String nameTag = "Name";
private static final String idTag = "MCID";
private static final String descTag = "Desc";
private static final String[] fields = {nameTag, idTag};
public static class Instantiator implements AdvertisementFactory.Instantiator {
/**
* {@inheritDoc}
*/
public String getAdvertisementType() {
return ModuleClassAdvertisement.getAdvertisementType();
}
/**
* {@inheritDoc}
*/
public Advertisement newInstance() {
return new ModuleClassAdv();
}
/**
* {@inheritDoc}
*/
public Advertisement newInstance(Element root) {
if (!XMLElement.class.isInstance(root)) {
throw new IllegalArgumentException(getClass().getName() + " only supports XLMElement");
}
return new ModuleClassAdv((XMLElement) root);
}
}
/**
* Private constructor for new instances. Use the instantiator.
*/
private ModuleClassAdv() {}
/**
* Private constructor for xml serialized instances. Use the instantiator.
*
* @param doc The XML serialization of the advertisement.
*/
private ModuleClassAdv(XMLElement doc) {
String doctype = doc.getName();
String typedoctype = "";
Attribute itsType = doc.getAttribute("type");
if (null != itsType) {
typedoctype = itsType.getValue();
}
if (!doctype.equals(getAdvertisementType()) && !getAdvertisementType().equals(typedoctype)) {
throw new IllegalArgumentException(
"Could not construct : " + getClass().getName() + "from doc containing a " + doc.getName());
}
Enumeration<XMLElement> elements = doc.getChildren();
while (elements.hasMoreElements()) {
XMLElement elem = elements.nextElement();
if (!handleElement(elem)) {
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("Unhandled Element: " + elem.toString());
}
}
}
// Sanity Check!!!
if (null == getModuleClassID()) {
throw new IllegalArgumentException("Module Class ID was not specified.");
}
}
/**
* {@inheritDoc}
*/
@Override
public String getAdvType() {
return getAdvertisementType();
}
/**
* {@inheritDoc}
*/
@Override
protected boolean handleElement(Element raw) {
if (super.handleElement(raw)) {
return true;
}
XMLElement elem = (XMLElement) raw;
if (elem.getName().equals(nameTag)) {
setName(elem.getTextValue());
return true;
}
if (elem.getName().equals(descTag)) {
setDesc(elem);
return true;
}
if (elem.getName().equals(idTag)) {
try {
URI clID = new URI(elem.getTextValue());
setModuleClassID((ModuleClassID) IDFactory.fromURI(clID));
} catch (URISyntaxException badID) {
throw new IllegalArgumentException("Bad mcid in advertisement");
} catch (ClassCastException badID) {
throw new IllegalArgumentException("Unusable mcid in advertisement");
}
return true;
}
return false;
}
/**
* {@inheritDoc}
*/
@Override
public Document getDocument(MimeMediaType encodeAs) {
if (null == getModuleClassID()) {
throw new IllegalStateException("Module Class ID was not specified.");
}
StructuredDocument adv = (StructuredDocument) super.getDocument(encodeAs);
Element e;
e = adv.createElement(idTag, getModuleClassID().toString());
adv.appendChild(e);
// name is optional
String name = getName();
if (null != name) {
e = adv.createElement(nameTag, name);
adv.appendChild(e);
}
// desc is optional
StructuredDocument desc = getDesc();
if (desc != null) {
StructuredDocumentUtils.copyElements(adv, adv, desc);
}
return adv;
}
/**
* {@inheritDoc}
*/
@Override
public String[] getIndexFields() {
return fields;
}
}