/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
 *
 * 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.
 */

package org.springframework.security.ldap.search;

import org.springframework.ldap.core.DirContextOperations;
import org.springframework.security.core.userdetails.UsernameNotFoundException;


/**
 * Obtains a user's information from the LDAP directory given a login name.
 * <p>
 * May be optionally used to configure the LDAP authentication implementation when
 * a more sophisticated approach is required than just using a simple username->DN
 * mapping.
 * </p>
 *
 * @author Luke Taylor
 */
public interface LdapUserSearch {
    //~ Methods ========================================================================================================

    /**
     * Locates a single user in the directory and returns the LDAP information for that user.
     *
     * @param username the login name supplied to the authentication service.
     *
     * @return a DirContextOperations object containing the user's full DN and requested attributes.
     * @throws UsernameNotFoundException if no user with the supplied name could be located by the search.
     */
    DirContextOperations searchForUser(String username) throws UsernameNotFoundException;
}
