/*
* 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.protocol;
import net.jxta.document.Element;
import net.jxta.document.ExtendableAdvertisement;
import net.jxta.document.MimeMediaType;
import net.jxta.document.StructuredDocument;
import net.jxta.document.StructuredDocumentFactory;
import net.jxta.document.StructuredDocumentUtils;
import net.jxta.id.ID;
import net.jxta.platform.ModuleSpecID;
/**
* Provides the references that describe a module specification. Typically this
* includes references to the documentation needed in order to create conforming
* implementations of the specification. A secondary use is, optionally, to make
* running instances usable remotely, by publishing any or all of the following:
* <br><ul>
* <li> PipeAdvertisement
* <li> ModuleSpecID of a proxy module
* <li> ModuleSpecID of an authenticator module
* </ul>
* <p/>
* Not all modules are usable remotely, it is up to the specification creator to
* make that choice. However, if the specification dictates it, all
* implementations can be expected to support it.
* <p/>
* Note that the Standard PeerGroup implementation included with the JXSE
* reference implementation does <em>not</em> support replacing a group service
* with a pipe to a remote instance. However, nothing prevents a particular
* implementation of a group from using a proxy module in place of the fully
* version; provided that the API (and therefore the ClassIDs) of the proxy and
* local versions are identical.
* <p/>
* Note also that in the case of the local+proxy style, it is up to the
* implementation of both sides to figure-out which pipe to listen to or connect
* to. The safest method is probably for the full version to seek its own
* ModuleSpecAdvertisement, and for the proxy version to accept the full
* version's ModuleSpecAdvertisement as a parameter. Alternatively, if the proxy
* version is completely dedicated to the specification that it proxies, both
* sides may have the PipeID and type hard-coded.
*
* @see net.jxta.platform.ModuleSpecID
* @see net.jxta.protocol.PipeAdvertisement
* @see net.jxta.protocol.ModuleClassAdvertisement
* @see net.jxta.protocol.ModuleImplAdvertisement
* @see net.jxta.document.Advertisement
*/
public abstract class ModuleSpecAdvertisement extends ExtendableAdvertisement implements Cloneable {
private ModuleSpecID id = null;
private String name = null;
private Element description = null;
private String creator = null;
private String uri = null;
private String version = null;
private PipeAdvertisement pipeAdv = null;
private ModuleSpecID proxySpecID = null;
private ModuleSpecID authSpecID = null;
private StructuredDocument param = null;
/**
* Returns the identifying type of this Advertisement.
*
* @return String the type of advertisement
**/
public static String getAdvertisementType() {
return "jxta:MSA";
}
/**
* {@inheritDoc}
**/
@Override
public final String getBaseAdvType() {
return getAdvertisementType();
}
/**
* {@inheritDoc}
**/
@Override
public ModuleSpecAdvertisement clone() {
try {
ModuleSpecAdvertisement clone = (ModuleSpecAdvertisement) super.clone();
clone.setModuleSpecID(getModuleSpecID());
clone.setName(getName());
clone.setDesc(getDesc());
clone.setCreator(getCreator());
clone.setSpecURI(getSpecURI());
clone.setVersion(getVersion());
clone.setPipeAdvertisement(getPipeAdvertisement());
clone.setProxySpecID(getProxySpecID());
clone.setAuthSpecID(getAuthSpecID());
clone.setParam(param);
return clone;
} catch (CloneNotSupportedException impossible) {
throw new Error("Object.clone() threw CloneNotSupportedException", impossible);
}
}
/**
* returns a unique id for that adv for the purpose of indexing.
* The spec id uniquely identifies this advertisement.
*
* @return ID the spec id as a basic ID.
*
*/
@Override
public ID getID() {
return id;
}
/**
* returns the id of the spec
*
* @return ModuleSpecID the spec id
**/
public ModuleSpecID getModuleSpecID() {
return id;
}
/**
* sets the id of the spec
*
* @param id The id of the spec
**/
public void setModuleSpecID(ModuleSpecID id) {
this.id = id;
}
/**
* returns the name of the module spec
*
* @return String name of the module spec
**/
public String getName() {
return name;
}
/**
* sets the name of the module spec
*
* @param name name of the module spec to be set
**/
public void setName(String name) {
this.name = name;
}
/**
* returns the description
*
* @return String the description
**/
public String getDescription() {
if (null != description) {
return (String) description.getValue();
} else {
return null;
}
}
/**
* sets the description
*
* @param description the description
**/
public void setDescription(String description) {
if (null != description) {
StructuredDocument newdoc = StructuredDocumentFactory.newStructuredDocument(MimeMediaType.XMLUTF8, "Desc", description);
setDesc(newdoc);
} else {
this.description = null;
}
}
/**
* returns the description
*
* @return the description
**/
public StructuredDocument getDesc() {
if (null != description) {
StructuredDocument newDoc = StructuredDocumentUtils.copyAsDocument(description);
return newDoc;
} else {
return null;
}
}
/**
* sets the description
*
* @param desc the description
**/
public void setDesc(Element desc) {
if (null != desc) {
this.description = StructuredDocumentUtils.copyAsDocument(desc);
} else {
this.description = null;
}
}
/**
* Returns the creator of the module spec, in case someone cares.
*
* @return String the creator.
**/
public String getCreator() {
return creator;
}
/**
* Sets the creator of this module spec.
* Note: the usefulness of this is unclear.
*
* @param creator name of the creator of the module
**/
public void setCreator(String creator) {
this.creator = creator;
}
/**
* returns the uri. This uri normally points at the actual specification
* that this advertises.
*
* @return String uri
**/
public String getSpecURI() {
return uri;
}
/**
* sets the uri
*
* @param uri string uri
**/
public void setSpecURI(String uri) {
this.uri = uri;
}
/**
* returns the specification version number
*
* @return String version number
**/
public String getVersion() {
return version;
}
/**
* sets the version of the module
*
* @param version version number
**/
public void setVersion(String version) {
this.version = version;
}
/**
* returns the param element.
*
* @return Element parameters as an Element of unspecified content.
**/
public StructuredDocument getParam() {
return (param == null ? null : StructuredDocumentUtils.copyAsDocument(param));
}
/**
* Privileged version of {@link #getParam()} that does not clone the elements.
*
* @return StructuredDocument A stand-alone structured document of
* unspecified content.
**/
protected StructuredDocument getParamPriv() {
return param;
}
/**
* sets the param element.
*
* @param param Element of an unspecified content.
**/
public void setParam(Element param) {
this.param = (param == null ? null : StructuredDocumentUtils.copyAsDocument(param));
}
/**
* returns the embedded pipe advertisement if any.
*
* @return PipeAdvertisement the Pipe Advertisement. null if none exists.
**/
public PipeAdvertisement getPipeAdvertisement() {
return (pipeAdv == null ? null : pipeAdv.clone());
}
/**
* sets an embedded pipe advertisement.
*
* @param pipeAdv the Pipe Advertisement. null is authorized.
**/
public void setPipeAdvertisement(PipeAdvertisement pipeAdv) {
this.pipeAdv = (pipeAdv == null ? null : pipeAdv.clone());
}
/**
* returns the specID of a proxy module.
*
* @return ModuleSpecID the spec id
**/
public ModuleSpecID getProxySpecID() {
return proxySpecID;
}
/**
* sets a proxy module specID
*
* @param proxySpecID The spec id
**/
public void setProxySpecID(ModuleSpecID proxySpecID) {
this.proxySpecID = proxySpecID;
}
/**
* returns the specID of an authenticator module.
*
* @return ModuleSpecID the spec id
**/
public ModuleSpecID getAuthSpecID() {
return authSpecID;
}
/**
* sets an authenticator module specID
*
* @param authSpecID The spec id
**/
public void setAuthSpecID(ModuleSpecID authSpecID) {
this.authSpecID = authSpecID;
}
}