/* | |
* 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.openjpa.lib.log; | |
import java.util.ArrayList; | |
import java.util.Arrays; | |
import java.util.Iterator; | |
import java.util.List; | |
import java.util.concurrent.CopyOnWriteArrayList; | |
/** | |
* A LogFactory implementation to pass events through multiple | |
* LogFactory implementations(such as log4j and LogPanelFactory). | |
* | |
* @author Steve Kim | |
*/ | |
public class MultiLogFactory implements LogFactory { | |
private List _delegates; | |
/** | |
* Create an instance with the given delegates. | |
*/ | |
public MultiLogFactory(LogFactory d1, LogFactory d2) { | |
this(new LogFactory[]{ d1, d2 }); | |
} | |
/** | |
* Create an instance with the given delegates. | |
*/ | |
public MultiLogFactory(LogFactory d1, LogFactory d2, LogFactory d3) { | |
this(new LogFactory[]{ d1, d2, d3 }); | |
} | |
/** | |
* Create an instance with the given delegates. | |
*/ | |
public MultiLogFactory(LogFactory[] delegates) { | |
_delegates = new CopyOnWriteArrayList(Arrays.asList(delegates)); | |
} | |
public void addLogFactory(LogFactory factory) { | |
_delegates.add(factory); | |
} | |
public void removeLogFactory(LogFactory factory) { | |
_delegates.remove(factory); | |
} | |
/** | |
* Returns the delegates that this MultiLogFactory delegates messages to. | |
*/ | |
public LogFactory[] getDelegates() { | |
return (LogFactory[]) _delegates.toArray(new LogFactory[0]); | |
} | |
/** | |
* Returns a Log impl that combines all logs. | |
*/ | |
public synchronized Log getLog(String channel) { | |
List logs = new ArrayList(_delegates.size()); | |
for (Iterator i = _delegates.iterator(); i.hasNext();) { | |
LogFactory f = (LogFactory) i.next(); | |
if (f != null) { | |
Log l = f.getLog(channel); | |
if (l != null) | |
logs.add(l); | |
} | |
} | |
return new MultiLog((Log[]) logs.toArray(new Log[logs.size()])); | |
} | |
/** | |
* Combinatory Log impl. | |
*/ | |
private static class MultiLog implements Log { | |
private Log[] _logs; | |
public MultiLog(Log[] logs) { | |
_logs = logs; | |
} | |
/** | |
* Return the logs that this log delegates to. | |
*/ | |
public Log[] getDelegates() { | |
return _logs; | |
} | |
public void trace(Object msg) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].trace(msg); | |
} | |
public void trace(Object msg, Throwable t) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].trace(msg, t); | |
} | |
public void info(Object msg) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].info(msg); | |
} | |
public void info(Object msg, Throwable t) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].info(msg, t); | |
} | |
public void warn(Object msg) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].warn(msg); | |
} | |
public void warn(Object msg, Throwable t) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].warn(msg, t); | |
} | |
public void error(Object msg) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].error(msg); | |
} | |
public void error(Object msg, Throwable t) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].error(msg, t); | |
} | |
public void fatal(Object msg) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].fatal(msg); | |
} | |
public void fatal(Object msg, Throwable t) { | |
for (int i = 0; i < _logs.length; i++) | |
_logs[i].fatal(msg, t); | |
} | |
public boolean isTraceEnabled() { | |
for (int i = 0; i < _logs.length; i++) | |
if (_logs[i].isTraceEnabled()) | |
return true; | |
return false; | |
} | |
public boolean isInfoEnabled() { | |
for (int i = 0; i < _logs.length; i++) | |
if (_logs[i].isInfoEnabled()) | |
return true; | |
return false; | |
} | |
public boolean isWarnEnabled() { | |
for (int i = 0; i < _logs.length; i++) | |
if (_logs[i].isWarnEnabled()) | |
return true; | |
return false; | |
} | |
public boolean isErrorEnabled() { | |
for (int i = 0; i < _logs.length; i++) | |
if (_logs[i].isErrorEnabled()) | |
return true; | |
return false; | |
} | |
public boolean isFatalEnabled() { | |
for (int i = 0; i < _logs.length; i++) | |
if (_logs[i].isFatalEnabled()) | |
return true; | |
return false; | |
} | |
} | |
} |