/*
* @(#)DecisionAttribute.java
*
* Copyright 2005-2006 Swedish Institute of Computer Science 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. Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistribution 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.
*
* Neither the name of Swedish Institute of Computer Science or the names of
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. THE SWEDISH INSTITUE OF COMPUTER
* SCIENCE ("SICS") AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS
* SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SICS OR ITS LICENSORS BE
* LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT,
* SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED
* AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SICS HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use in
* the design, construction, operation or maintenance of any nuclear facility.
*/
package com.sun.xacml.attr;
import java.net.URI;
import com.sun.xacml.ctx.Attribute;
import com.sun.xacml.ctx.Result;
/**
* Convenience class that represents the Decision attribute.
*
* @author Ludwig Seitz
*
*/
public class DecisionAttribute extends Attribute {
/**
* The static id URI of the Decision attribute
*/
private static URI idURI;
/**
* RuntimeException that wraps an Exception thrown during the
* creation of idURI, null if none.
*/
private static RuntimeException earlyException;
/**
* Static initializer that initializes the identifierURI
* class field so that we can catch any exceptions thrown
* by URI(String) and transform them into a RuntimeException.
* Such exceptions should never happen but should be reported
* properly if they ever do.
*/
static {
try {
idURI = URI.create(TypeIdentifierConstants.DECISION);
} catch (IllegalArgumentException e) {
earlyException = e;
}
}
/**
* Constructor that creates a Decision Attribute.
*
* @param decision The decision code from the <code>Result</code> class.
*/
public DecisionAttribute(int decision) {
super(DecisionAttribute.idURI, null,
new StringAttribute((String)Result.DECISIONS.get(decision)));
if (earlyException != null) {
throw earlyException;
}
if (decision != Result.DECISION_DENY
&& decision != Result.DECISION_PERMIT) {
throw new IllegalArgumentException("Decision attribute value must"
+ " be 'PERMIT' or 'DENY'");
}
}
}