Source Code Cross Referenced for ExtObjectServer.java in  » Database-DBMS » db4o-6.4 » com » db4o » ext » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db4o 6.4 » com.db4o.ext 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /* Copyright (C) 2004 - 2007  db4objects Inc.  http://www.db4o.com
02:
03:        This file is part of the db4o open source object database.
04:
05:        db4o is free software; you can redistribute it and/or modify it under
06:        the terms of version 2 of the GNU General Public License as published
07:        by the Free Software Foundation and as clarified by db4objects' GPL 
08:        interpretation policy, available at
09:        http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10:        Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11:        Suite 350, San Mateo, CA 94403, USA.
12:
13:        db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14:        WARRANTY; without even the implied warranty of MERCHANTABILITY or
15:        FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16:        for more details.
17:
18:        You should have received a copy of the GNU General Public License along
19:        with this program; if not, write to the Free Software Foundation, Inc.,
20:        59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
21:        package com.db4o.ext;
22:
23:        import java.io.*;
24:
25:        import com.db4o.*;
26:        import com.db4o.config.*;
27:
28:        /**
29:         * extended functionality for the ObjectServer interface.
30:         * <br><br>Every ObjectServer also always is an ExtObjectServer
31:         * so a cast is possible.<br><br>
32:         * {@link com.db4o.ObjectServer#ext}
33:         * is a convenient method to perform the cast.<br><br>
34:         * The functionality is split to two interfaces to allow newcomers to
35:         * focus on the essential methods.
36:         */
37:        public interface ExtObjectServer extends ObjectServer {
38:
39:            /**
40:             * backs up the database file used by the ObjectServer.
41:             * <br><br>While the backup is running, the ObjectServer can continue to be
42:             * used. Changes that are made while the backup is in progress, will be applied to
43:             * the open ObjectServer and to the backup.<br><br>
44:             * While the backup is running, the ObjectContainer should not be closed.<br><br>
45:             * If a file already exists at the specified path, it will be overwritten.<br><br>
46:             * @param path a fully qualified path
47:             */
48:            public void backup(String path) throws IOException;
49:
50:            /**
51:             * returns the number of connected clients.
52:             */
53:            public int clientCount();
54:
55:            /**
56:             * returns the {@link Configuration} context for this ObjectServer.
57:             * <br><br>
58:             * Upon opening an ObjectServer with any of the factory methods in the
59:             * {@link Db4o} class, the global {@link Configuration} context
60:             * is copied into the ObjectServer. The {@link Configuration}
61:             * can be modified individually for
62:             * each ObjectServer without any effects on the global settings.<br><br>
63:             * @return the Configuration context for this ObjectServer
64:             * @see com.db4o.Db4o#configure
65:             */
66:            public Configuration configure();
67:
68:            /**
69:             * returns the ObjectContainer used by the server.
70:             * <br><br>
71:             * @return the ObjectContainer used by the server
72:             */
73:            public ObjectContainer objectContainer();
74:
75:            /**
76:             * removes client access permissions for the specified user.
77:             * <br><br>
78:             * @param userName the name of the user
79:             */
80:            public void revokeAccess(String userName);
81:
82:            /**
83:             * @return The local port this server uses, 0 if disconnected or in embedded mode
84:             */
85:            public int port();
86:        }
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