/**
* License Agreement.
*
* JBoss RichFaces 3.0 - Ajax4jsf Component Library
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.richfaces.dtd.wutka;
import java.net.URL;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.richfaces.dtd.Attribute;
import org.richfaces.dtd.DocumentDefinition;
import org.richfaces.dtd.DocumentDefinitionFactory;
import org.richfaces.dtd.Element;
import com.wutka.dtd.DTD;
import com.wutka.dtd.DTDAttribute;
import com.wutka.dtd.DTDElement;
import com.wutka.dtd.DTDParser;
/**
* @author Maksim Kaszynski
*
*/
public class WutkaDefinitionFactory extends DocumentDefinitionFactory{
private final Log log = LogFactory.getLog(this.getClass());
private Map<URL, DocumentDefinition> definitions
= new HashMap<URL, DocumentDefinition>();
@Override
public synchronized DocumentDefinition getDocumentDefinition(URL resource) {
DocumentDefinition def = null;
if (definitions.containsKey(resource)) {
def = definitions.get(resource);
} else {
try {
def = initDefinition(resource);
} catch(Exception e) {
log.error("An error has occured", e);
}
if (def != null) {
definitions.put(resource, def);
}
}
return def;
}
private DocumentDefinition initDefinition(URL resource) throws Exception{
DTD dtd = new DTDParser(resource).parse();
Element rootElement = fromWutka(dtd.rootElement);
DocumentDefinition definition = new DocumentDefinition(resource, rootElement);
@SuppressWarnings("unchecked")
Enumeration<DTDElement> elements = dtd.elements.elements();
while(elements.hasMoreElements()) {
DTDElement element = elements.nextElement();
definition.addElement(fromWutka(element));
}
return definition;
}
private Attribute fromWutka(DTDAttribute attr) {
return new Attribute(attr.name);
}
private Element fromWutka(DTDElement element) {
if (element == null) {
return null;
}
Element e = new Element(element.getName());
@SuppressWarnings("unchecked")
Enumeration<DTDAttribute> attrs =
element.attributes.elements();
while(attrs.hasMoreElements()) {
e.addAttribute(fromWutka(attrs.nextElement()));
}
return e;
}
}