org.slf4j.impl.StaticLoggerBinder Maven / Gradle / Ivy
/*
* 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.slf4j.impl;
import org.apache.logging.slf4j.Log4jLoggerFactory;
import org.slf4j.ILoggerFactory;
import org.slf4j.spi.LoggerFactoryBinder;
/**
* SLF4J LoggerFactoryBinder implementation using Log4j. This class is part of the required classes used to specify an
* SLF4J logger provider implementation.
*/
public final class StaticLoggerBinder implements LoggerFactoryBinder {
/**
* Declare the version of the SLF4J API this implementation is compiled
* against. The value of this field is usually modified with each release.
*/
// to avoid constant folding by the compiler, this field must *not* be final
public static String REQUESTED_API_VERSION = "1.6"; // !final
private static final String LOGGER_FACTORY_CLASS_STR = Log4jLoggerFactory.class.getName();
/**
* The unique instance of this class.
*/
private static final StaticLoggerBinder SINGLETON = new StaticLoggerBinder();
/**
* The ILoggerFactory instance returned by the {@link #getLoggerFactory}
* method should always be the same object
*/
private final ILoggerFactory loggerFactory;
/**
* Private constructor to prevent instantiation
*/
private StaticLoggerBinder() {
loggerFactory = new Log4jLoggerFactory();
}
/**
* Returns the singleton of this class.
*
* @return the StaticLoggerBinder singleton
*/
public static StaticLoggerBinder getSingleton() {
return SINGLETON;
}
/**
* Returns the factory.
* @return the factor.
*/
@Override
public ILoggerFactory getLoggerFactory() {
return loggerFactory;
}
/**
* Returns the class name.
* @return the class name;
*/
@Override
public String getLoggerFactoryClassStr() {
return LOGGER_FACTORY_CLASS_STR;
}
}