/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * particular file as subject to the "Classpath" exception as provided

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 */

package com.sun.corba.se.spi.logging ;

import java.util.logging.Level ;

import java.util.logging.Logger ;

import java.util.logging.LogRecord ;

public abstract class LogWrapperBase {

    protected Logger logger ;

    protected String loggerName ;

    protected LogWrapperBase( Logger logger )

    {

        this.logger = logger ;

        this.loggerName = logger.getName( );

    }

    protected void doLog( Level level, String key, Object[] params, Class wrapperClass,

        Throwable thr )

    {

        LogRecord lrec = new LogRecord( level, key ) ;

        if (params != null)

            lrec.setParameters( params ) ;

        inferCaller( wrapperClass, lrec ) ;

        lrec.setThrown( thr ) ;

        lrec.setLoggerName( loggerName );

        lrec.setResourceBundle( logger.getResourceBundle() ) ;

        logger.log( lrec ) ;

    }

    private void inferCaller( Class wrapperClass, LogRecord lrec )

    {

        // Private method to infer the caller's class and method names

        // Get the stack trace.

        StackTraceElement stack[] = (new Throwable()).getStackTrace();

        StackTraceElement frame = null ;

        String wcname = wrapperClass.getName() ;

        String baseName = LogWrapperBase.class.getName() ;

        // The top of the stack should always be a method in the wrapper class,

        // or in this base class.

        // Search back to the first method not in the wrapper class or this class.

        int ix = 0;

        while (ix < stack.length) {

            frame = stack[ix];

            String cname = frame.getClassName();

            if (!cname.equals(wcname) && !cname.equals(baseName))  {

                break;

            }

            ix++;

        }

        // Set the class and method if we are not past the end of the stack

        // trace

        if (ix < stack.length) {

            lrec.setSourceClassName(frame.getClassName());

            lrec.setSourceMethodName(frame.getMethodName());

        }

    }

    protected void doLog( Level level, String key, Class wrapperClass, Throwable thr )

    {

        doLog( level, key, null, wrapperClass, thr ) ;

    }

}