001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements. See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache license, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License. You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the license for the specific language governing permissions and
015     * limitations under the license.
016     */
017    package org.apache.log4j.spi;
018    
019    import org.apache.log4j.spi.LoggerRepository;
020    
021    /**
022    
023     The <code>LogManager</code> uses one (and only one)
024     <code>RepositorySelector</code> implementation to select the
025     {@link org.apache.log4j.spi.LoggerRepository} for a particular application context.
026    
027     <p>It is the responsability of the <code>RepositorySelector</code>
028     implementation to track the application context. Log4j makes no
029     assumptions about the application context or on its management.
030    
031     <p>See also {@link org.apache.log4j.LogManager LogManager}.
032    
033     @since 1.2
034    
035     */
036    public interface RepositorySelector {
037    
038        /**
039         Returns a {@link org.apache.log4j.spi.LoggerRepository} depending on the
040         context. Implementors must make sure that a valid (non-null)
041         LoggerRepository is returned.
042         */
043        public LoggerRepository getLoggerRepository();
044    }