package org.fcrepo.server.security.impl;
/*
* @(#)Attribute.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
* 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 SUN 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.
*/
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.URI;
import org.fcrepo.server.security.Attribute;
import org.fcrepo.utilities.ReadableByteArrayOutputStream;
import org.jboss.security.xacml.sunxacml.Indenter;
import org.jboss.security.xacml.sunxacml.attr.AttributeValue;
import org.jboss.security.xacml.sunxacml.attr.DateTimeAttribute;
/**
* Represents the AttributeType XML type found in the context schema.
*
* Localized for more efficient handling of values and a singleton impl
* @since 1.0
* @author Seth Proctor
* @author barmintor
*/
public abstract class AbstractAttribute implements Attribute {
// required meta-data attributes
protected URI id;
protected URI type;
// optional meta-data attributes
protected String issuer = null;
protected DateTimeAttribute issueInstant = null;
/**
* Creates a new <code>Attribute</code> of the type specified in the
* given <code>AttributeValue</code>.
*
* @param id the id of the attribute
* @param issuer the attribute's issuer or null if there is none
* @param issueInstant the moment when the attribute was issued, or null
* if it's unspecified
*/
public AbstractAttribute(URI id, String issuer, DateTimeAttribute issueInstant)
{
this.id = id;
this.issuer = issuer;
this.issueInstant = issueInstant;
}
@Override
public URI getId() {
return id;
}
@Override
public URI getType() {
return type;
}
@Override
public String getIssuer() {
return issuer;
}
@Override
public DateTimeAttribute getIssueInstant() {
return issueInstant;
}
@Override
public void encode(OutputStream output) {
encode(output, new Indenter(0));
}
@Override
public void encode(OutputStream output, Indenter indenter) {
// setup the formatting & outstream stuff
String indent = indenter.makeString();
PrintStream out = new PrintStream(output);
// write out the encoded form
out.append(indent);
encodeToStream(out);
}
/**
* Simple encoding method that returns the text-encoded version of
* this attribute with no formatting.
*
* @return the text-encoded XML
*/
@Override
public String encode() {
ReadableByteArrayOutputStream out = new ReadableByteArrayOutputStream();
encode(out);
return out.toString();
}
private void encodeToStream(PrintStream out) {
out.append("<Attribute AttributeId=\"");
if (id != null) out.append(id.toString());
out.append("\" DataType=\"");
if (type != null) out.append(type.toString());
out.append('"');
if (issuer != null)
out.append(" Issuer=\"").append(issuer).append('"');
if (issueInstant != null)
out.append(" IssueInstant=\"").append(issueInstant.encode()).append('"');
out.append('>');
if(getValues() != null)
{
for(AttributeValue value: this.getValues())
{
out.append(value.encodeWithTags(false));
}
}
out.println("</Attribute>\n");
}
@Override
public int hashCode()
{
final int prime = 31;
int result = 1;
result = prime * result + ((getValues() == null) ? 0 : getValues().hashCode());
result = prime * result + ((id == null) ? 0 : id.hashCode());
result = prime * result + ((issueInstant == null) ? 0 : issueInstant.hashCode());
result = prime * result + ((issuer == null) ? 0 : issuer.hashCode());
result = prime * result + ((type == null) ? 0 : type.hashCode());
return result;
}
@Override
public boolean equals(Object obj)
{
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof AbstractAttribute))
return false;
AbstractAttribute other = (AbstractAttribute) obj;
if (getValues() == null)
{
if (other.getValues() != null)
return false;
}
else if (!getValues().equals(other.getValues()))
return false;
if (id == null)
{
if (other.id != null)
return false;
}
else if (!id.equals(other.id))
return false;
if (issueInstant == null)
{
if (other.issueInstant != null)
return false;
}
else if (!issueInstant.equals(other.issueInstant))
return false;
if (issuer == null)
{
if (other.issuer != null)
return false;
}
else if (!issuer.equals(other.issuer))
return false;
if (type == null)
{
if (other.type != null)
return false;
}
else if (!type.equals(other.type))
return false;
return true;
}
}