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/*
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 *
 * Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
 *
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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package com.sun.enterprise.security.integration;

import java.security.Principal;
import javax.security.auth.Subject;
import org.jvnet.hk2.annotations.Contract;

import org.glassfish.hk2.api.PerLookup;

/**
 * The SecurityContext Interface, also provide factory methods
 * 
 */
@Contract
@PerLookup
public interface AppServSecurityContext {

    /**
     * This method should  be implemented by the subclasses to
     * return the caller principal. This information may be redundant
     * since the same information can be inferred by inspecting the
     * Credentials of the caller. 
     * @return The caller Principal. 
     */
    public Principal getCallerPrincipal();
    
    /**
     * This method should be implemented by the subclasses to return 
     * the Credentials of the caller principal.
     * @return A credentials object associated with the current client 
     * invocation.
     */
    public Subject getSubject();
    
    /**
     * @return a new instance
     */
    public AppServSecurityContext newInstance(String userName, Subject subject, String realm);
    
    /**
     * @return a new instance
     */
    public AppServSecurityContext newInstance(String userName, Subject subject);
    
    /**
     * set the current security context
     */
    public void setCurrentSecurityContext(AppServSecurityContext context);
     
     /**
      * @return the current security context
      */
     public AppServSecurityContext getCurrentSecurityContext(); 
     /**
      * set the unauthenticated context
      */
     public void setUnauthenticatedSecurityContext();
     
     /**
      * set the SecurityContext with given Principal
      */
     public void setSecurityContextWithPrincipal(Principal principal);
}