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  /*
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
   *
   * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
   *
   * The contents of this file are subject to the terms of either the GNU
   * General Public License Version 2 only ("GPL") or the Common Development
   * and Distribution License("CDDL") (collectively, the "License").  You
   * may not use this file except in compliance with the License.  You can
  * obtain a copy of the License at
  * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
  * or packager/legal/LICENSE.txt.  See the License for the specific
  * language governing permissions and limitations under the License.
  *
  * When distributing the software, include this License Header Notice in each
  * file and include the License file at packager/legal/LICENSE.txt.
  *
  * GPL Classpath Exception:
  * Oracle designates this particular file as subject to the "Classpath"
  * exception as provided by Oracle in the GPL Version 2 section of the License
  * file that accompanied this code.
  *
  * Modifications:
  * If applicable, add the following below the License Header, with the fields
  * enclosed by brackets [] replaced by your own identifying information:
  * "Portions Copyright [year] [name of copyright owner]"
  *
  * Contributor(s):
  * If you wish your version of this file to be governed by only the CDDL or
  * only the GPL Version 2, indicate your decision by adding "[Contributor]
  * elects to include this software in this distribution under the [CDDL or GPL
  * Version 2] license."  If you don't indicate a single choice of license, a
  * recipient has the option to distribute your version of this file under
  * either the CDDL, the GPL Version 2 or to extend the choice of license to
  * its licensees as provided above.  However, if you add GPL Version 2 code
  * and therefore, elected the GPL Version 2 license, then the option applies
  * only if the new code is made subject to such option by the copyright
  * holder.
  */
 
 package com.sun.enterprise.web.logger;
 
 
Convenience base class for Logger implementations. The only method that must be implemented is write(String msg, int verbosity), plus any property setting and lifecycle methods required for configuration.
 
 
 abstract class LoggerBase implements Logger {
 
     // ----------------------------------------------------- Instance Variables
 
    
The Container with which this Logger has been associated.
 
     protected Container container = null;

    
The descriptive information about this implementation.
 
     protected static final String info =
         "com.sun.enterprise.web.logger.LoggerBase/1.0";

    
The property change support for this component.
 
     protected PropertyChangeSupport support = new PropertyChangeSupport(this);
 
     // ------------------------------------------------------------- Properties
 
    
Return the Container with which this Logger has been associated.
 
     public Container getContainer() {
         return ();
     }

    
Set the Container with which this Logger has been associated.

Parameters:
container The associated Container
 
     public void setContainer(Container container) {
 
         Container oldContainer = this.;
         this. = container;
         .firePropertyChange("container"oldContainerthis.);
    }

    
Return descriptive information about this Logger implementation and the corresponding version number, in the format <description>/<version>.
    public String getInfo() {
        return ();
    }

    
Logger interface method (ignored)
    public int getVerbosity() {
        //Ignored
        return -1;
    }

    
Logger interface method (ignored)

Parameters:
verbosity The new verbosity level
    public void setVerbosity(int verbosity) {
        //Ignored
    }
    // --------------------------------------------------------- Public Methods

    
Add a property change listener to this component.

Parameters:
listener The listener to add
    public void addPropertyChangeListener(PropertyChangeListener listener) {
        .addPropertyChangeListener(listener);
    }

    
Writes the specified message to a servlet log file, usually an event log. The name and type of the servlet log is specific to the servlet container.

Parameters:
msg A String specifying the message to be written to the log file
    public void log(String msg) {
        write(msg);
    }

    
Writes the specified exception, and message, to a servlet log file. The implementation of this method should call log(msg, exception) instead. This method is deprecated in the ServletContext interface, but not deprecated here to avoid many useless compiler warnings. This message will be logged unconditionally.

Parameters:
exception An Exception to be reported
msg The associated message string
    public void log(Exception exceptionString msg) {
        log(msgexception);
    }

    
Writes an explanatory message and a stack trace for a given Throwable exception to the servlet log file. The name and type of the servlet log file is specific to the servlet container, usually an event log. This message will be logged unconditionally.

Parameters:
msg A String that describes the error or exception
throwable The Throwable error or exception
    public void log(String msgThrowable throwable) {
        write(msgthrowable);
    }

    
Writes the specified message to the servlet log file, usually an event log, if the logger is set to a verbosity level equal to or higher than the specified value for this message.

Parameters:
message A String specifying the message to be written to the log file
verbosity Verbosity level of this message
    public void log(String messageint verbosity) {
        write(messageverbosity);
    }

    
Writes the specified message and exception to the servlet log file, usually an event log, if the logger is set to a verbosity level equal to or higher than the specified value for this message.

Parameters:
message A String that describes the error or exception
throwable The Throwable error or exception
verbosity Verbosity level of this message
    public void log(String messageThrowable throwableint verbosity) {
        write(messagethrowableverbosity);
    }

    
Remove a property change listener from this component.

Parameters:
listener The listener to remove
    public void removePropertyChangeListener(PropertyChangeListener listener) {
        .removePropertyChangeListener(listener);
    }
    protected void write(String msgThrowable throwableint verbosity) {
        CharArrayWriter buf = new CharArrayWriter();
        PrintWriter writer = new PrintWriter(buf);
        writer.println(msg);
        throwable.printStackTrace(writer);
        Throwable rootCause = null;
        if (throwable instanceof LifecycleException)
            rootCause = ((LifecycleExceptionthrowable).getCause();
        else if (throwable instanceof ServletException)
            rootCause = ((ServletExceptionthrowable).getRootCause();
        if (rootCause != null) {
            writer.println("----- Root Cause -----");
            rootCause.printStackTrace(writer);
        }
        write(buf.toString(), verbosity);
    }

    
Logs the given message at the given verbosity level.
    protected abstract void write(String msgint verbosity);
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