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Tomcat example source code file (UserDatabase.java)

This example Tomcat source code file (UserDatabase.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

exception, exception, group, group, iterator, iterator, role, string, string, user, userdatabase, util

The Tomcat UserDatabase.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.catalina;


import java.util.Iterator;


/**
 * <p>Abstract representation of a database of {@link User}s and
 * {@link Group}s that can be maintained by an application,
 * along with definitions of corresponding {@link Role}s, and
 * referenced by a {@link Realm} for authentication and access control.</p>
 *
 * @author Craig R. McClanahan
 * @version $Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $
 * @since 4.1
 */

public interface UserDatabase {


    // ------------------------------------------------------------- Properties


    /**
     * Return the set of {@link Group}s defined in this user database.
     */
    public Iterator getGroups();


    /**
     * Return the unique global identifier of this user database.
     */
    public String getId();


    /**
     * Return the set of {@link Role}s defined in this user database.
     */
    public Iterator getRoles();


    /**
     * Return the set of {@link User}s defined in this user database.
     */
    public Iterator getUsers();


    // --------------------------------------------------------- Public Methods


    /**
     * Finalize access to this user database.
     *
     * @exception Exception if any exception is thrown during closing
     */
    public void close() throws Exception;


    /**
     * Create and return a new {@link Group} defined in this user database.
     *
     * @param groupname The group name of the new group (must be unique)
     * @param description The description of this group
     */
    public Group createGroup(String groupname, String description);


    /**
     * Create and return a new {@link Role} defined in this user database.
     *
     * @param rolename The role name of the new role (must be unique)
     * @param description The description of this role
     */
    public Role createRole(String rolename, String description);


    /**
     * Create and return a new {@link User} defined in this user database.
     *
     * @param username The logon username of the new user (must be unique)
     * @param password The logon password of the new user
     * @param fullName The full name of the new user
     */
    public User createUser(String username, String password,
                           String fullName);


    /**
     * Return the {@link Group} with the specified group name, if any;
     * otherwise return <code>null.
     *
     * @param groupname Name of the group to return
     */
    public Group findGroup(String groupname);


    /**
     * Return the {@link Role} with the specified role name, if any;
     * otherwise return <code>null.
     *
     * @param rolename Name of the role to return
     */
    public Role findRole(String rolename);


    /**
     * Return the {@link User} with the specified user name, if any;
     * otherwise return <code>null.
     *
     * @param username Name of the user to return
     */
    public User findUser(String username);


    /**
     * Initialize access to this user database.
     *
     * @exception Exception if any exception is thrown during opening
     */
    public void open() throws Exception;


    /**
     * Remove the specified {@link Group} from this user database.
     *
     * @param group The group to be removed
     */
    public void removeGroup(Group group);


    /**
     * Remove the specified {@link Role} from this user database.
     *
     * @param role The role to be removed
     */
    public void removeRole(Role role);


    /**
     * Remove the specified {@link User} from this user database.
     *
     * @param user The user to be removed
     */
    public void removeUser(User user);


    /**
     * Save any updated information to the persistent storage location for
     * this user database.
     *
     * @exception Exception if any exception is thrown during saving
     */
    public void save() throws Exception;


}

Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat UserDatabase.java source code file:

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