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package com.sun.xml.ws.api.security.trust;

import java.util.List;
import java.util.Map;
import javax.security.auth.Subject;
import javax.xml.namespace.QName;

/**
 * 
 * This interface is a plugin for attrinute services to a Security Token Service (STS).
 * An attribute service provides the attributes about a requestor. The attributes are 
 * included in the issued toekn for the requestor using with the target servicce for 
 * authentication and authorization purpose. The usual services mechanism is used to find implementing class
 * of STSAttributeProvider.
 * 
 @author Jiandong Guo
 */

public interface STSAttributeProvider {
    public static final String NAME_IDENTIFIER = "NameID";
    
    /**
     * Returns the map of claimed attributes of the requestor apply to the targeted service.
     * @param subject The Subject contgaining authentication information and context of the 
     *                authenticated requestor.
     * @param appliesTo Identifying target service(s) 
     * @param tokenType Type of token to be issued which will contain these attributes.
     * @param cliams Identifying the attributes of the requestor claimed by the target service.
     * @return map of attribut key and values. The key of the map is a QName contains the key name the the name space 
     *         for the key. The value of the map is a List of String contains
     *         a list of the values. One particular value with the requestor 
     *         identity to be in the issued token with key nameNAME_IDENTIFIER must be in the map.
     */  
    Map> getClaimedAttributes(Subject subject, String appliesTo, String tokenType, Claims claims);
}