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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a>
<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a>
<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<span class="sourceLineNo">010</span> *<a name="line.10"></a>
<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<span class="sourceLineNo">014</span> * See the license for the specific language governing permissions and<a name="line.14"></a>
<span class="sourceLineNo">015</span> * limitations under the license.<a name="line.15"></a>
<span class="sourceLineNo">016</span> */<a name="line.16"></a>
<span class="sourceLineNo">017</span>package org.apache.log4j.spi;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>/**<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span> The &lt;code&gt;LogManager&lt;/code&gt; uses one (and only one)<a name="line.21"></a>
<span class="sourceLineNo">022</span> &lt;code&gt;RepositorySelector&lt;/code&gt; implementation to select the<a name="line.22"></a>
<span class="sourceLineNo">023</span> {@link org.apache.log4j.spi.LoggerRepository} for a particular application context.<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span> &lt;p&gt;It is the responsibility of the &lt;code&gt;RepositorySelector&lt;/code&gt;<a name="line.25"></a>
<span class="sourceLineNo">026</span> implementation to track the application context. Log4j makes no<a name="line.26"></a>
<span class="sourceLineNo">027</span> assumptions about the application context or on its management.<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span> &lt;p&gt;See also {@link org.apache.log4j.LogManager LogManager}.<a name="line.29"></a>
<span class="sourceLineNo">030</span><a name="line.30"></a>
<span class="sourceLineNo">031</span> @since 1.2<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span> */<a name="line.33"></a>
<span class="sourceLineNo">034</span>public interface RepositorySelector {<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span> /**<a name="line.36"></a>
<span class="sourceLineNo">037</span> * Returns a {@link org.apache.log4j.spi.LoggerRepository} depending on the<a name="line.37"></a>
<span class="sourceLineNo">038</span> * context. Implementers must make sure that a valid (non-null)<a name="line.38"></a>
<span class="sourceLineNo">039</span> * LoggerRepository is returned.<a name="line.39"></a>
<span class="sourceLineNo">040</span> * @return a LoggerRepository.<a name="line.40"></a>
<span class="sourceLineNo">041</span> */<a name="line.41"></a>
<span class="sourceLineNo">042</span> LoggerRepository getLoggerRepository();<a name="line.42"></a>
<span class="sourceLineNo">043</span>}<a name="line.43"></a>
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