/*
* (c) Copyright Hewlett-Packard Company 2001 - 2009
* All rights reserved.
*
* 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 name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 THE AUTHOR 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.
*/
package com.hp.gloze.extension;
import java.net.URI;
import java.net.URLEncoder;
import com.hp.hpl.jena.graph.Node;
import com.hp.hpl.jena.reasoner.rulesys.BindingEnvironment;
import com.hp.hpl.jena.reasoner.rulesys.RuleContext;
import com.hp.hpl.jena.reasoner.rulesys.builtins.BaseBuiltin;
/**
* @author steven.a.battle@googlemail.com
*/
public class CreateURI extends BaseBuiltin {
/* (non-Javadoc)
* @see com.hp.hpl.jena.reasoner.rulesys.Builtin#getName()
*/
public String getName() {
return "createURI";
}
/* (non-Javadoc)
* @see com.hp.hpl.jena.reasoner.rulesys.Builtin#getArgLength()
*/
public int getArgLength() {
return 3;
}
/* (non-Javadoc)
* @see com.hp.hpl.jena.reasoner.rulesys.Builtin#getURI()
*/
public String getURI() {
return "http://www.hp.com/gloze/extensions/createURI";
}
/* (non-Javadoc)
* @see com.hp.hpl.jena.reasoner.rulesys.Builtin#bodyCall(com.hp.hpl.jena.graph.Node[], int, com.hp.hpl.jena.reasoner.rulesys.RuleContext)
*/
public boolean bodyCall(Node[] args, int length, RuleContext context) {
BindingEnvironment env = context.getEnv();
Node namespace = env.getGroundVersion(args[0]);
Node localName = env.getGroundVersion(args[1]);
try {
String ns = namespace.getLiteral().getValue().toString();
String ln;
try {
ln = localName.getLiteral().getValue().toString();
}
// if the value is at odds with the datatype
catch (Exception e) { ln = localName.getLiteral().toString(); }
ln = URLEncoder.encode(ln,"UTF-8");
URI uri = new URI(ns+(!ns.endsWith("#")&&!ns.endsWith("/")?"#":"")+ln);
env.bind(args[2],Node.createURI(uri.toString()));
return true;
} catch (Exception e) {
return false;
}
}
}