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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.log4j.spi;
    19
    20  import org.apache.log4j.Appender;
    21  import java.util.Enumeration;
    22
    23  /**
    24     Interface for attaching appenders to objects.
    25
    26     @author Ceki G&uuml;lc&uuml;
    27     @since 0.9.1 */
    28  public interface AppenderAttachable {
    29
    30    /**
    31       Add an appender.
    32     */
    33    public
    34    void addAppender(Appender newAppender);
    35
    36    /**
    37       Get all previously added appenders as an Enumeration.  */
    38    public
    39    Enumeration getAllAppenders();
    40
    41    /**
    42       Get an appender by name.
    43     */
    44    public
    45    Appender getAppender(String name);
    46
    47
    48    /**
    49       Returns <code>true</code> if the specified appender is in list of
    50       attached attached, <code>false</code> otherwise.
    51
    52       @since 1.2 */
    53    public
    54    boolean isAttached(Appender appender);
    55
    56    /**
    57       Remove all previously added appenders.
    58    */
    59    void removeAllAppenders();
    60
    61
    62    /**
    63       Remove the appender passed as parameter from the list of appenders.
    64    */
    65     void removeAppender(Appender appender);
    66
    67
    68   /**
    69      Remove the appender with the name passed as parameter from the
    70      list of appenders.
    71    */
    72   void
    73   removeAppender(String name);
    74  }
    75