/*
* 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.apache.log4j.spi;
import java.util.Enumeration;
import org.apache.log4j.Appender;
import org.apache.log4j.Category;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
/**
A <code>LoggerRepository</code> is used to create and retrieve
<code>Loggers</code>. The relation between loggers in a repository
depends on the repository but typically loggers are arranged in a
named hierarchy.
<p>In addition to the creational methods, a
<code>LoggerRepository</code> can be queried for existing loggers,
can act as a point of registry for events related to loggers.
@author Ceki Gülcü
@since 1.2 */
public interface LoggerRepository {
/**
Add a {@link HierarchyEventListener} event to the repository.
*/
public
void addHierarchyEventListener(HierarchyEventListener listener);
/**
Returns whether this repository is disabled for a given
level. The answer depends on the repository threshold and the
<code>level</code> parameter. See also {@link #setThreshold}
method. */
boolean isDisabled(int level);
/**
Set the repository-wide threshold. All logging requests below the
threshold are immediately dropped. By default, the threshold is
set to <code>Level.ALL</code> which has the lowest possible rank. */
public
void setThreshold(Level level);
/**
Another form of {@link #setThreshold(Level)} accepting a string
parameter instead of a <code>Level</code>. */
public
void setThreshold(String val);
public
void emitNoAppenderWarning(Category cat);
/**
Get the repository-wide threshold. See {@link
#setThreshold(Level)} for an explanation. */
public
Level getThreshold();
public
Logger getLogger(String name);
public
Logger getLogger(String name, LoggerFactory factory);
public
Logger getRootLogger();
public
abstract
Logger exists(String name);
public
abstract
void shutdown();
public
Enumeration getCurrentLoggers();
/**
Deprecated. Please use {@link #getCurrentLoggers} instead. */
public
Enumeration getCurrentCategories();
public
abstract
void fireAddAppenderEvent(Category logger, Appender appender);
public
abstract
void resetConfiguration();
}
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