StaticLoggerBinder xref

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    1   /**
    2    * Copyright (c) 2004-2013 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.impl;
    26
    27  import org.slf4j.ILoggerFactory;
    28  import org.slf4j.LoggerFactory;
    29  import org.slf4j.spi.LoggerFactoryBinder;
    30
    31  /**
    32   * The binding of {@link LoggerFactory} class with an actual instance of
    33   * {@link ILoggerFactory} is performed using information returned by this class.
    34   *
    35   * @author Ceki G&uuml;lc&uuml;
    36   * @author Andrey Korzhevskiy <a.korzhevskiy@gmail.com>
    37   */
    38  public class StaticLoggerBinder implements LoggerFactoryBinder {
    39
    40      /**
    41       * The unique instance of this class.
    42       */
    43      private static final StaticLoggerBinder SINGLETON = new StaticLoggerBinder();
    44
    45      /**
    46       * Return the singleton of this class.
    47       *
    48       * @return the StaticLoggerBinder singleton
    49       */
    50      public static StaticLoggerBinder getSingleton() {
    51          return SINGLETON;
    52      }
    53
    54      /**
    55       * Declare the version of the SLF4J API this implementation is compiled against.
    56       * The value of this field is modified with each major release.
    57       */
    58      // to avoid constant folding by the compiler, this field must *not* be final
    59      public static String REQUESTED_API_VERSION = "1.6.99"; // !final
    60
    61      private static final String loggerFactoryClassStr = AndroidLoggerFactory.class.getName();
    62
    63      /**
    64       * The ILoggerFactory instance returned by the {@link #getLoggerFactory} method
    65       * should always be the same object
    66       */
    67      private final ILoggerFactory loggerFactory;
    68
    69      private StaticLoggerBinder() {
    70          loggerFactory = new AndroidLoggerFactory();
    71      }
    72
    73      public ILoggerFactory getLoggerFactory() {
    74          return loggerFactory;
    75      }
    76
    77      public String getLoggerFactoryClassStr() {
    78          return loggerFactoryClassStr;
    79      }
    80  }