/*
* JBoss, Home of Professional Open Source
* Copyright 2007, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.security.xacml.core.ext;
import java.net.URI;
import java.net.URISyntaxException;
import org.jboss.security.xacml.sunxacml.ParsingException;
import org.jboss.security.xacml.sunxacml.UnknownIdentifierException;
import org.jboss.security.xacml.sunxacml.attr.AttributeFactory;
import org.jboss.security.xacml.sunxacml.attr.AttributeProxy;
import org.jboss.security.xacml.sunxacml.attr.AttributeValue;
import org.jboss.security.xacml.sunxacml.attr.StringAttribute;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* Represents a single value attribute proxy
* @author Anil.Saldhana@redhat.com
* @since Mar 28, 2008
* @version $Revision$
*/
public class SingleValueAttributeProxy implements AttributeProxy
{
private URI type;
public SingleValueAttributeProxy(String type)
{
try
{
this.type = new URI(type);
}
catch (URISyntaxException e)
{
throw new RuntimeException(e);
}
}
public SingleValueAttributeProxy(URI type)
{
this.type = type;
}
public AttributeValue getInstance(Node root) throws Exception
{
// now we get the attribute value
if (getNodeName(root).equals("AttributeValue"))
{
// now get the value
try
{
Node child = root.getFirstChild();
if(child == null)
return new StringAttribute("");
//get the type of the node
short nodetype = child.getNodeType();
// now see if we have (effectively) a simple string value
if ((nodetype == Node.TEXT_NODE) || (nodetype == Node.CDATA_SECTION_NODE) ||
(nodetype == Node.COMMENT_NODE))
{
return new StringAttribute(child.getNodeValue());
}
return AttributeFactory.getInstance().createValue(child, type);
}
catch (UnknownIdentifierException uie)
{
throw new ParsingException("Unknown AttributeId", uie);
}
}
return null;
}
public AttributeValue getInstance(String value) throws Exception
{
return new SingleValueAttribute(type, value);
}
private static String getNodeName(Node node)
{
String name = node.getLocalName();
if(name == null)
name = node.getNodeName();
return name;
}
}