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AclPrincipal is now an interface, scale better

// AclPrincipal.java
// $Id: AclPrincipal.java,v 1.3 1999/04/27 15:05:47 bmahe Exp $
// (c) COPYRIGHT MIT, INRIA and Keio, 1999.
// Please first read the full copyright statement in file COPYRIGHT.html
 
package org.w3c.jigsaw.acl;

import java.security.Principal;
import java.net.InetAddress;

/**
 * @version $Revision: 1.3 $
 * @author  Benoît Mahé (bmahe@w3.org)
 */
abstract public interface AclPrincipal extends Principal {
    
    /**
     * Get the realm associated to this principal.(could be his group)
     * @return the realm name.
     */
    abstract public String getRealm();

    /**
     * Get the password associated to this principal.
     * @return the password
     */
    abstract public String getPassword();

    /**
     * Set a parameter.
     * @param name the parameter name
     * @param value the parameter value
     */
    abstract public void setValue(String name, Object value);

    /**
     * Get a parameter value.
     * @param name the parameter name.
     * @return the parameter value
     */
    abstract public Object getValue(String name);

    /**
     * Return true if the IPadress associated to this principal match
     * the given one.
     * @param adr an IP adress
     * @return true if the ip adress match.
     */
    abstract public boolean matchIP(InetAddress adr);

}