1 /**
2  * Copyright (c) 2004-2011 QOS.ch
3  * All rights reserved.
4  *
5  * Permission is hereby granted, free  of charge, to any person obtaining
6  * a  copy  of this  software  and  associated  documentation files  (the
7  * "Software"), to  deal in  the Software without  restriction, including
8  * without limitation  the rights to  use, copy, modify,  merge, publish,
9  * distribute,  sublicense, and/or sell  copies of  the Software,  and to
10  * permit persons to whom the Software  is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The  above  copyright  notice  and  this permission  notice  shall  be
14  * included in all copies or substantial portions of the Software.
15  *
16  * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
17  * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
18  * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21  * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  *
24  */
25 package org.slf4j;
26 
27 /**
28  * <code>ILoggerFactory</code> instances manufacture {@link Logger}
29  * instances by name.
30  *
31  * <p>Most users retrieve {@link Logger} instances through the static
32  * {@link LoggerFactory#getLogger(String)} method. An instance of of this
33  * interface is bound internally with {@link LoggerFactory} class at
34  * compile time.
35  *
36  * @author Ceki G&uuml;lc&uuml;
37  */
38 public interface ILoggerFactory {
39 
40     /**
41      * Return an appropriate {@link Logger} instance as specified by the
42      * <code>name</code> parameter.
43      *
44      * <p>If the name parameter is equal to {@link Logger#ROOT_LOGGER_NAME}, that is
45      * the string value "ROOT" (case insensitive), then the root logger of the
46      * underlying logging system is returned.
47      *
48      * <p>Null-valued name arguments are considered invalid.
49      *
50      * <p>Certain extremely simple logging systems, e.g. NOP, may always
51      * return the same logger instance regardless of the requested name.
52      *
53      * @param name the name of the Logger to return
54      * @return a Logger instance
55      */
getLogger(String name)56     public Logger getLogger(String name);
57 }
58