/**
* (The MIT License)
*
* Copyright (c) 2008 - 2011:
*
* * {Aaron Patterson}[http://tenderlovemaking.com]
* * {Mike Dalessio}[http://mike.daless.io]
* * {Charles Nutter}[http://blog.headius.com]
* * {Sergio Arbeo}[http://www.serabe.com]
* * {Patrick Mahoney}[http://polycrystal.org]
* * {Yoko Harada}[http://yokolet.blogspot.com]
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* 'Software'), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package nokogiri.internals;
import javax.xml.namespace.QName;
import javax.xml.xpath.XPathFunction;
import javax.xml.xpath.XPathFunctionResolver;
import org.jruby.runtime.builtin.IRubyObject;
/**
* Xpath function resolver class, which is used in XmlXpathContext.
*
* @author sergio
* @author Yoko Harada <yokolet@gmail.com>
*/
public class NokogiriXPathFunctionResolver implements XPathFunctionResolver {
private static NokogiriXPathFunctionResolver resolver;
private IRubyObject handler;
public static NokogiriXPathFunctionResolver create(IRubyObject handler) {
if (resolver == null) resolver = new NokogiriXPathFunctionResolver();
try {
NokogiriXPathFunctionResolver clone = (NokogiriXPathFunctionResolver) resolver.clone();
clone.setHandler(handler);
return clone;
} catch (CloneNotSupportedException e) {
NokogiriXPathFunctionResolver freshResolver = new NokogiriXPathFunctionResolver();
freshResolver.setHandler(handler);
return freshResolver;
}
}
private NokogiriXPathFunctionResolver() {}
public void setHandler(IRubyObject handler) {
this.handler = handler;
}
public XPathFunction resolveFunction(QName name, int arity) {
return NokogiriXPathFunction.create(handler, name.getLocalPart(), arity);
}
}