UserDataConstraint.java

// ========================================================================
// Copyright (c) 2008-2009 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
// The Eclipse Public License is available at 
// http://www.eclipse.org/legal/epl-v10.html
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
// You may elect to redistribute this code under either of these licenses. 
// ========================================================================

package org.eclipse.jetty.security;

/**
 * @version $Rev: 4466 $ $Date: 2009-02-10 23:42:54 +0100 (Tue, 10 Feb 2009) $
 */
public enum UserDataConstraint
{
    None, Integral, Confidential;

    public static UserDataConstraint get(int dataConstraint)
    {
        if (dataConstraint < -1 || dataConstraint > 2) throw new IllegalArgumentException("Expected -1, 0, 1, or 2, not: " + dataConstraint);
        if (dataConstraint == -1) return None;
        return values()[dataConstraint];
    }

    public UserDataConstraint combine(UserDataConstraint other)
    {
        if (this.compareTo(other) < 0) return this;
        return other;
    }
}