/*

  * ============================================================================

  *

  *  File:     TokenAuthenticator.java

  *----------------------------------------------------------------------------

  *

  * Copyright 2008 Erlend Nossum

  *

  * Licensed under the Apache License, Version 2.0 (the "License"); 

  * you may not use this file except in compliance with the License. 

  * You may obtain a copy of the License at 

  *

  *   http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and 

  * limitations under the License.

  *

  *  Description:  See javadoc below

  *

  *  Created:      Mar 16, 2008

  * ============================================================================ 

  */

 package org.semispace.ws;

 /**

  * Authenticator for token login.

  */

 public interface TokenAuthenticator {

     /**

      * Generate a token based on the username / password. This

      * will typically be performed as query on a member 

      * database, or as a question upon the space.

      */

     public String authenticate( String username, String password);

     /**

      * @return True if the token is valid, false otherwise

      */

     public boolean isTokenValid( String token );

 }