/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2004-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.xml.handlers.xsi;
import java.net.URI;
import org.geotools.xml.XSIElementHandler;
import org.geotools.xml.schema.Schema;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXNotSupportedException;
/**
* RootHandler purpose.
*
* <p>
* This is intended to bootstrap the schema parsing
* </p>
*
* @author dzwiers, Refractions Research, Inc. http://www.refractions.net
* @author $Author:$ (last modification)
* @source $URL$
* @version $Id$
*/
public class RootHandler extends XSIElementHandler {
/** 'root' */
public final static String LOCALNAME = "root";
private SchemaHandler schema;
private URI uri;
/*
* should not be called
*/
private RootHandler() {
// do nothing
}
/**
* Creates a new RootHandler object.
*
* @param uri
*/
public RootHandler(URI uri) {
this.uri = uri;
schema = new SchemaHandler();
}
/**
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
return LOCALNAME.hashCode() * ((uri == null) ? 1 : uri.hashCode());
}
/**
* @see org.geotools.xml.XSIElementHandler#getHandler(java.lang.String,
* java.lang.String)
*/
public XSIElementHandler getHandler(String namespaceURI, String localName){
if (SchemaHandler.LOCALNAME.equalsIgnoreCase(localName)
&& SchemaHandler.namespaceURI.equalsIgnoreCase(namespaceURI)) {
if (schema == null) {
schema = new SchemaHandler();
}
return schema;
}
logger.warning("Starting schema with " + localName + " element.");
return null;
}
/**
* @see org.geotools.xml.XSIElementHandler#startElement(java.lang.String,
* java.lang.String, org.xml.sax.Attributes)
*/
public void startElement(String namespaceURI, String localName,
Attributes attr) throws SAXException {
throw new SAXNotSupportedException(
"Should never have elements at the root level");
}
/**
* @see org.geotools.xml.XSIElementHandler#getLocalName()
*/
public String getLocalName() {
return LOCALNAME;
}
/**
* <p>
* intended to be called after the parse, this generates a Schema object
* from the schema which was parsed in.
* </p>
*
*
* @throws SAXException
*/
public Schema getSchema() throws SAXException {
Schema s = schema.compress(uri);
return s;
}
/**
* @see org.xml.sax.ContentHandler#startPrefixMapping(java.lang.String,
* java.lang.String)
*/
public void startPrefixMapping(String arg0, String arg1) {
schema.startPrefixMapping(arg0, arg1);
}
/**
* @see org.geotools.xml.XSIElementHandler#getHandlerType()
*/
public int getHandlerType() {
return DEFAULT;
}
/**
* @see org.geotools.xml.XSIElementHandler#endElement(java.lang.String,
* java.lang.String)
*/
public void endElement(String namespaceURI, String localName){
// do nothing
}
}