/*
* @(#)AnyURIAttribute.java
*
* Copyright 2003-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc. 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. SUN MICROSYSTEMS, INC. ("SUN")
* 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 SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
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* OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
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*
* 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 java.net.URISyntaxException;
import org.w3c.dom.Node;
import com.sun.xacml.ParsingException;
/**
* Representation of an xs:anyURI value. This class supports parsing
* xs:anyURI values.
*
* @since 1.0
* @author Seth Proctor
*/
public class AnyURIAttribute extends AttributeValue
{
/**
* Official name of this type
*/
public static final String identifier =
TypeIdentifierConstants.ANYURI;
//URI version of name for this type
private static URI identifierURI;
// RuntimeException that wraps an Exception thrown during the
// creation of identifierURI, 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 {
identifierURI = URI.create(identifier);
} catch (IllegalArgumentException e) {
earlyException = e;
}
}
// the URI value that this class represents
private URI value;
/**
* Creates a new <code>AnyURIAttribute</code> that represents
* the URI value supplied.
*
* @param value the <code>URI</code> value to be represented
*/
public AnyURIAttribute(URI value) {
super(identifierURI);
// Shouldn't happen, but just in case...
if (earlyException != null) {
throw earlyException;
}
this.value = value;
}
/**
* Returns a new <code>AnyURIAttribute</code> that represents
* the xs:anyURI at a particular DOM node.
*
* @param root the <code>Node</code> that contains the desired value
*
* @return a new <code>AnyURIAttribute</code> representing the
* appropriate value (null if there is a parsing error)
*
* @throws URISyntaxException
* @throws ParsingException
*/
public static AnyURIAttribute getInstance(Node root)
throws URISyntaxException, ParsingException {
if (root.getFirstChild() != null) {
return getInstance(root.getFirstChild().getNodeValue());
}
throw new ParsingException("Error while parsing"
+ "a AnyURIAttribute");
}
/**
* Returns a new <code>AnyURIAttribute</code> that represents
* the xs:anyURI value indicated by the <code>String</code> provided.
*
* @param value a string representing the desired value
*
* @return a new <code>AnyURIAttribute</code> representing the
* appropriate value
*
* @throws URISyntaxException
* @throws ParsingException
*/
public static AnyURIAttribute getInstance(String value)
throws URISyntaxException, ParsingException {
if (value == null) {
throw new ParsingException("Can't create a "
+ "AnyURIAttribute from null input");
}
return new AnyURIAttribute(new URI(value));
}
/**
* Returns the <code>URI</code> value represented by this object.
*
* @return the <code>URI</code> value
*/
public URI getValue() {
return this.value;
}
/**
* Returns true if the input is an instance of this class and if its
* value equals the value contained in this class.
*
* @param o the object to compare
*
* @return true if this object and the input represent the same value
*/
public boolean equals(Object o) {
if (! (o instanceof AnyURIAttribute)) {
return false;
}
AnyURIAttribute other = (AnyURIAttribute)o;
return this.value.equals(other.value);
}
/**
* Returns the hashcode value used to index and compare this object with
* others of the same type. Typically this is the hashcode of the backing
* data object.
*
* @return the object's hashcode value
*/
public int hashCode() {
return this.value.hashCode();
}
/**
* Converts to a String representation.
*
* @return the String representation
*/
public String toString() {
return "AnyURIAttribute: \"" + this.value.toString() + "\"";
}
/**
* @return The AttributeValue encoded as a <code>String</code>.
*
*/
public String encode() {
return this.value.toString();
}
}