/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.enterprise.deployment.node;
import com.sun.enterprise.deployment.util.DOLUtils;
import java.io.InputStream;
import java.util.logging.Level;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
*Provides access to schemas and DTDs to Java Web Start-launched app clients
*that do not have an app server product installation at hand.
*<p>
*The DTDs and schemas are assumed to be in the classpath so that
*schemas are at /schemas/<schema-name> and DTDs at /dtds/<dtd-name>
*
* @author tjquinn
*/
public class SaxParserHandlerBundled extends SaxParserHandler {
/** prefixes for the paths to use for looking up schemas and dtds as resources */
private static final String BUNDLED_SCHEMA_ROOT = "/schemas";
private static final String BUNDLED_DTD_ROOT = "/dtds";
/** Creates a new instance of SaxParserHandlerBundled */
public SaxParserHandlerBundled() {
}
/**
*Returns an InputSource for the requested DTD or schema.
*<p>
*This implementation returns an InputSource that wraps the result
*of getResourceAsStream, having
*located the requested schema in the classpath.
*@param the public ID of the requested entity
*@param the system ID of the requested entity
*@return InputSource for the requested entity; null if not available
*@throws SAXException in case of errors resolving the entity
*/
public InputSource resolveEntity(String publicID, String systemID) throws SAXException {
InputSource result = null;
/*
*This logic was patterned after that in the superclass.
*/
try {
if(DOLUtils.getDefaultLogger().isLoggable(Level.FINE)) {
DOLUtils.getDefaultLogger().fine("Asked to resolve " + publicID + " system id = " + systemID);
}
if (publicID==null) {
// unspecified schema
if (systemID==null || systemID.lastIndexOf('/')==systemID.length()) {
return null;
}
/*
*Attempt to open a stream to the requested resource as a schema.
*/
InputStream is = openSchemaStream(systemID);
if (is != null) {
/*
*We found the entity, so wrap an InputSource around the stream.
*/
result = new InputSource(is);
} else {
/*
*The entity was not found, so wrap an InputSource around the system ID string instead.
*/
result = new InputSource(systemID);
}
} else {
/*
*Try to find a DTD for the entity.
*/
if ( getMapping().containsKey(publicID)) {
this.publicID = publicID;
InputStream is = openDTDStream(publicID);
if (is != null) {
result = new InputSource(is);
}
} else if (systemID != null) {
/*
*The DTD lookup failed but a system ID was also specified. Try
*looking up the DTD in the schemas path, because some reside
*there and were not registered in the DTD map by SaxParserHandler.
*/
InputStream is = openSchemaStream(systemID);
if (is != null) {
result = new InputSource(is);
}
}
}
} catch (Exception exc) {
exc.printStackTrace();
throw new SAXException(exc);
}
return result;
}
/**
*Returns an InputStream for the schema with the requested system ID.
*@param systemID of the schema
*@return an InputStream to the selected schema; null if the schema is not available
*/
private InputStream openSchemaStream(String systemID) {
String targetID = BUNDLED_SCHEMA_ROOT + "/" + systemID.substring(systemID.lastIndexOf("/") + 1 );
InputStream result = this.getClass().getResourceAsStream(targetID);
return result;
}
/**
*Returns an InputStream for the DTD with the requested public ID.
*@param the publicID of the DTD requested
*@return an InputStream to the selected DTD; null if the DTD is not available
*/
private InputStream openDTDStream(String publicID) {
String targetID = BUNDLED_DTD_ROOT + "/" + getMapping().get(publicID);
InputStream result = this.getClass().getResourceAsStream(targetID);
return result;
}
}
|
