jdk14mlog.java

c3p0数据库连接池实现源码

/*
 * Distributed as part of c3p0 v.0.9.1-pre6
 *
 * Copyright (C) 2005 Machinery For Change, Inc.
 *
 * Author: Steve Waldman <[e-mail]>
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 2.1, as 
 * published by the Free Software Foundation.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this software; see the file LICENSE.  If not, write to the
 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 */


package com.mchange.v2.log.jdk14logging;

import java.util.*;
import java.util.logging.*;
import com.mchange.v2.log.*;

public final class Jdk14MLog extends MLog
{
    private static String[] UNKNOWN_ARRAY = new String[] {"UNKNOWN_CLASS", "UNKNOWN_METHOD"};

    private final static String CHECK_CLASS = "java.util.logging.Logger";

    MLogger global = null;

    public Jdk14MLog() throws ClassNotFoundException
    { Class.forName( CHECK_CLASS ); }

    public MLogger getMLogger(String name)
    {
	Logger lg = Logger.getLogger(name);
	return new Jdk14MLogger( lg ); 
    }

    public MLogger getMLogger(Class cl)
    { return getLogger( cl.getName() ); }


    public MLogger getMLogger()
    {
	if (global == null)
	    global = new Jdk14MLogger( LogManager.getLogManager().getLogger("global") );
	return global;
    }

    /*
     * We have to do this ourselves when class and method aren't provided, 
     * because the automatic extraction of this information will find the
     * (not very informative) calls in this class.
     */
    private static String[] findCallingClassAndMethod()
    {
	StackTraceElement[] ste = new Throwable().getStackTrace();
	for (int i = 0, len = ste.length; i < len; ++i)
	    {
		StackTraceElement check = ste[i];
		String cn = check.getClassName();
		if (cn != null && ! cn.startsWith("com.mchange.v2.log.jdk14logging"))
		    return new String[] { check.getClassName(), check.getMethodName() };
	    }
	return UNKNOWN_ARRAY;
    }



    private final static class Jdk14MLogger implements MLogger
    {
	Logger logger;

	Jdk14MLogger( Logger logger )
	{ 
	    this.logger = logger; 
	    //System.err.println("LOGGER: " + this.logger);
	}

	private static Level level(MLevel lvl)
	{ return (Level) lvl.asJdk14Level(); }

	public ResourceBundle getResourceBundle()
	{ return logger.getResourceBundle(); }

	public String getResourceBundleName()
	{ return logger.getResourceBundleName(); }

	public void setFilter(Object java14Filter) throws SecurityException
	{
	    if (! (java14Filter instanceof Filter))
		throw new IllegalArgumentException("MLogger.setFilter( ... ) requires a java.util.logging.Filter. " +
						   "This is not enforced by the compiler only to permit building under jdk 1.3");
	    logger.setFilter( (Filter) java14Filter ); 
	}

	public Object getFilter()
	{ return logger.getFilter(); }

	public void log(MLevel l, String msg)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( level(l), sa[0], sa[1], msg );
	}

	public void log(MLevel l, String msg, Object param)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( level(l), sa[0], sa[1], msg, param );
	}

	public void log(MLevel l,String msg, Object[] params)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( level(l), sa[0], sa[1], msg, params );
	}

	public void log(MLevel l, String msg, Throwable t)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( level(l), sa[0], sa[1], msg, t );
	}

	public void logp(MLevel l, String srcClass, String srcMeth, String msg)
	{
	    if (! logger.isLoggable( level(l) )) return;

	    if (srcClass == null && srcMeth == null)
		{
		    String[] sa = findCallingClassAndMethod();
		    srcClass = sa[0];
		    srcMeth = sa[1];
		}
	    logger.logp( level(l), srcClass, srcMeth, msg ); 
	}

	public void logp(MLevel l, String srcClass, String srcMeth, String msg, Object param)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    if (srcClass == null && srcMeth == null)
		{
		    String[] sa = findCallingClassAndMethod();
		    srcClass = sa[0];
		    srcMeth = sa[1];
		}
	    logger.logp( level(l), srcClass, srcMeth, msg, param ); 
	}

	public void logp(MLevel l, String srcClass, String srcMeth, String msg, Object[] params)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    if (srcClass == null && srcMeth == null)
		{
		    String[] sa = findCallingClassAndMethod();
		    srcClass = sa[0];
		    srcMeth = sa[1];
		}
	    logger.logp( level(l), srcClass, srcMeth, msg, params ); 
	}

	public void logp(MLevel l, String srcClass, String srcMeth, String msg, Throwable t)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    if (srcClass == null && srcMeth == null)
		{
		    String[] sa = findCallingClassAndMethod();
		    srcClass = sa[0];
		    srcMeth = sa[1];
		}
	    logger.logp( level(l), srcClass, srcMeth, msg, t ); 
	}

	public void logrb(MLevel l, String srcClass, String srcMeth, String rb, String msg)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    if (srcClass == null && srcMeth == null)
		{
		    String[] sa = findCallingClassAndMethod();
		    srcClass = sa[0];
		    srcMeth = sa[1];
		}
	    logger.logrb( level(l), srcClass, srcMeth, rb, msg ); 
	}

	public void logrb(MLevel l, String srcClass, String srcMeth, String rb, String msg, Object param)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    if (srcClass == null && srcMeth == null)
		{
		    String[] sa = findCallingClassAndMethod();
		    srcClass = sa[0];
		    srcMeth = sa[1];
		}
	    logger.logrb( level(l), srcClass, srcMeth, rb, msg, param ); 
	}

	public void logrb(MLevel l, String srcClass, String srcMeth, String rb, String msg, Object[] params)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    if (srcClass == null && srcMeth == null)
		{
		    String[] sa = findCallingClassAndMethod();
		    srcClass = sa[0];
		    srcMeth = sa[1];
		}
	    logger.logrb( level(l), srcClass, srcMeth, rb, msg, params ); 
	}

	public void logrb(MLevel l, String srcClass, String srcMeth, String rb, String msg, Throwable t)
	{ 
	    if (! logger.isLoggable( level(l) )) return;

	    if (srcClass == null && srcMeth == null)
		{
		    String[] sa = findCallingClassAndMethod();
		    srcClass = sa[0];
		    srcMeth = sa[1];
		}
	    logger.logrb( level(l), srcClass, srcMeth, rb, msg, t ); 
	}

	public void entering(String srcClass, String srcMeth)
	{ 
	    if (! logger.isLoggable( Level.FINER )) return;

	    logger.entering( srcClass, srcMeth ); 
	}

	public void entering(String srcClass, String srcMeth, Object param)
	{ 
	    if (! logger.isLoggable( Level.FINER )) return;

	    logger.entering( srcClass, srcMeth, param ); 
	}

	public void entering(String srcClass, String srcMeth, Object params[])
	{ 
	    if (! logger.isLoggable( Level.FINER )) return;

	    logger.entering( srcClass, srcMeth, params ); 
	}

	public void exiting(String srcClass, String srcMeth)
	{ 
	    if (! logger.isLoggable( Level.FINER )) return;

	    logger.exiting( srcClass, srcMeth ); 
	}

	public void exiting(String srcClass, String srcMeth, Object result)
	{ 
	    if (! logger.isLoggable( Level.FINER )) return;

	    logger.exiting( srcClass, srcMeth, result ); 
	}

	public void throwing(String srcClass, String srcMeth, Throwable t)
	{ 
	    if (! logger.isLoggable( Level.FINER )) return;

	    logger.throwing( srcClass, srcMeth, t ); 
	}

	public void severe(String msg)
	{ 
	    if (! logger.isLoggable( Level.SEVERE )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( Level.SEVERE, sa[0], sa[1], msg );
	}

	public void warning(String msg)
	{ 
	    if (! logger.isLoggable( Level.WARNING )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( Level.WARNING, sa[0], sa[1], msg );
	}

	public void info(String msg)
	{ 
	    if (! logger.isLoggable( Level.INFO )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( Level.INFO, sa[0], sa[1], msg );
	}

	public void config(String msg)
	{
	    if (! logger.isLoggable( Level.CONFIG )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( Level.CONFIG, sa[0], sa[1], msg );
	}

	public void fine(String msg)
	{ 
	    if (! logger.isLoggable( Level.FINE )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( Level.FINE, sa[0], sa[1], msg );
	}

	public void finer(String msg)
	{ 
	    if (! logger.isLoggable( Level.FINER )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( Level.FINER, sa[0], sa[1], msg );
	}

	public void finest(String msg)
	{ 
	    if (! logger.isLoggable( Level.FINEST )) return;

	    String[] sa = findCallingClassAndMethod();
	    logger.logp( Level.FINEST, sa[0], sa[1], msg );
	}

	public void setLevel(MLevel l) throws SecurityException
	{ logger.setLevel( level(l) ); }
					      
	public MLevel getLevel()
	{ return MLevel.fromIntValue( logger.getLevel().intValue() ); }

	public boolean isLoggable(MLevel l)
	{ return logger.isLoggable( level(l) ); }

	public String getName()
	{ return logger.getName(); }

	public void addHandler(Object h) throws SecurityException
	{ 
	    if (! (h instanceof Handler))
		throw new IllegalArgumentException("MLogger.addHandler( ... ) requires a java.util.logging.Handler. " +
						   "This is not enforced by the compiler only to permit building under jdk 1.3");
	    logger.addHandler( (Handler) h ); 
	}

	public void removeHandler(Object h) throws SecurityException
	{
	    if (! (h instanceof Handler))
		throw new IllegalArgumentException("MLogger.removeHandler( ... ) requires a java.util.logging.Handler. " +
						   "This is not enforced by the compiler only to permit building under jdk 1.3");
	    logger.removeHandler( (Handler) h ); 
	}

	public Object[] getHandlers()
	{ return logger.getHandlers(); }

	public void setUseParentHandlers(boolean uph)
	{ logger.setUseParentHandlers( uph ); }

	public boolean getUseParentHandlers()
	{ return logger.getUseParentHandlers(); }
    }
}