/*
 * %W% %E%
 * 
 * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

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 ) ;
    }
}