mcconnell 2004/01/26 09:35:27
Added:
merlin/logging/logkit/impl/src/java/org/apache/avalon/logging/logkit
LoggerParameter.java
Log:
Parameter class to construct a logger from a string containing a priority
label such as "debug", "error", info", etc.
Revision Changes Path
1.1
avalon/merlin/logging/logkit/impl/src/java/org/apache/avalon/logging/logkit/LoggerParameter.java
Index: LoggerParameter.java
===================================================================
/*
* Copyright 2004 Apache Software Foundation
* Licensed 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.avalon.logging.logkit;
import java.io.File;
import java.net.URL;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.StringTokenizer;
import org.apache.avalon.framework.logger.Logger;
import org.apache.avalon.framework.logger.ConsoleLogger;
import org.apache.avalon.util.criteria.Parameter;
import org.apache.avalon.util.criteria.CriteriaException;
import org.apache.avalon.excalibur.i18n.ResourceManager;
import org.apache.avalon.excalibur.i18n.Resources;
/**
* A parameter descriptor that supports transformation of a
* a string url or file to a configuration instance.
*
* @author <a href="mailto:[EMAIL PROTECTED]">Stephen McConnell</a>
* @version $Revision: 1.1 $
*/
public class LoggerParameter extends Parameter
{
//--------------------------------------------------------------
// static
//--------------------------------------------------------------
private static final Resources REZ =
ResourceManager.getPackageResources( LoggerParameter.class );
private static final int PRIORITY = ConsoleLogger.LEVEL_WARN;
//--------------------------------------------------------------
// constructors
//--------------------------------------------------------------
/**
* Creation of a new logger parameter. The parameter support
* convertion of strings in the form "debug", "info", "warn",
* "error", "fatal" and "none" to an equivalent logger.
*
* @param key the parameter key
* @param initial the default logger
*/
public LoggerParameter( final String key, final Logger logger )
{
super( key, Logger.class, logger );
}
/**
* Resolve a supplied string to a configuration
* @param value the value to resolve
* @exception CriteriaException if an error occurs
*/
public Object resolve( Object value )
throws CriteriaException
{
if( value == null )
{
return new ConsoleLogger( PRIORITY );
}
if( value instanceof Logger )
{
return value;
}
if( value instanceof String )
{
String priority = ((String)value).toLowerCase();
if( priority.equals( "debug" ) )
{
return new ConsoleLogger( ConsoleLogger.LEVEL_DEBUG );
}
else if( priority.equals( "info" ) )
{
return new ConsoleLogger( ConsoleLogger.LEVEL_INFO );
}
else if( priority.equals( "warn" ) )
{
return new ConsoleLogger( ConsoleLogger.LEVEL_WARN );
}
else if( priority.equals( "error" ) )
{
return new ConsoleLogger( ConsoleLogger.LEVEL_ERROR );
}
else if( priority.equals( "fatal" ) )
{
return new ConsoleLogger( ConsoleLogger.LEVEL_FATAL );
}
else if( priority.equals( "none" ) )
{
return new ConsoleLogger( ConsoleLogger.LEVEL_DISABLED );
}
}
final String error =
REZ.getString(
"parameter.unknown",
value.getClass().getName(), Logger.class.getName() );
throw new CriteriaException( error );
}
}
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