/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the "License").  You may not use this file except
 * in compliance with the License.
 *
 * You can obtain a copy of the license at
 * glassfish/bootstrap/legal/CDDLv1.0.txt or
 * https://glassfish.dev.java.net/public/CDDLv1.0.html.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * HEADER in each file and include the License file at
 * glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable,
 * add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your
 * own identifying information: Portions Copyright [yyyy]
 * [name of copyright owner]
 *
 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
 *
 * Portions Copyright Apache Software Foundation.
 */ 

package org.apache.taglibs.standard.lang.jstl;

import java.io.PrintStream;
import java.text.MessageFormat;

/**
 *
 * <p>The evaluator may pass an instance of this class to operators
 * and expressions during evaluation.  They should use this to log any
 * warning or error messages that might come up.  This allows all of
 * our logging policies to be concentrated in one class.
 *
 * <p>Errors are conditions that are severe enough to abort operation.
 * Warnings are conditions through which the operation may continue,
 * but which should be reported to the developer.
 * 
 * @author Nathan Abramson - Art Technology Group
 * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: kchung $
 **/

public class Logger
{
  //-------------------------------------
  // Member variables
  //-------------------------------------

  PrintStream mOut;

  //-------------------------------------
  /**
   *
   * Constructor
   *
   * @param pOut the PrintStream to which warnings should be printed
   **/
  public Logger (PrintStream pOut)
  {
    mOut = pOut;
  }

  //-------------------------------------
  /**
   *
   * Returns true if the application should even bother to try logging
   * a warning.
   **/
  public boolean isLoggingWarning ()
  {
    return false;
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pMessage,
			  Throwable pRootCause)
    throws ELException
  {
    if (isLoggingWarning ()) {
      if (pMessage == null) {
	System.out.println (pRootCause);
      }
      else if (pRootCause == null) {
	System.out.println (pMessage);
      }
      else {
	System.out.println (pMessage + ": " + pRootCause);
      }
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning (pTemplate, null);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (Throwable pRootCause)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning (null, pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Object pArg0)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Throwable pRootCause,
			  Object pArg0)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Object pArg0,
			  Object pArg1)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Throwable pRootCause,
			  Object pArg0,
			  Object pArg1)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Object pArg0,
			  Object pArg1,
			  Object pArg2)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Throwable pRootCause,
			  Object pArg0,
			  Object pArg1,
			  Object pArg2)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Object pArg0,
			  Object pArg1,
			  Object pArg2,
			  Object pArg3)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Throwable pRootCause,
			  Object pArg0,
			  Object pArg1,
			  Object pArg2,
			  Object pArg3)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Object pArg0,
			  Object pArg1,
			  Object pArg2,
			  Object pArg3,
			  Object pArg4)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	    "" + pArg4,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Throwable pRootCause,
			  Object pArg0,
			  Object pArg1,
			  Object pArg2,
			  Object pArg3,
			  Object pArg4)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	    "" + pArg4,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Object pArg0,
			  Object pArg1,
			  Object pArg2,
			  Object pArg3,
			  Object pArg4,
			  Object pArg5)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	    "" + pArg4,
	    "" + pArg5,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs a warning
   **/
  public void logWarning (String pTemplate,
			  Throwable pRootCause,
			  Object pArg0,
			  Object pArg1,
			  Object pArg2,
			  Object pArg3,
			  Object pArg4,
			  Object pArg5)
    throws ELException
  {
    if (isLoggingWarning ()) {
      logWarning
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	    "" + pArg4,
	    "" + pArg5,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Returns true if the application should even bother to try logging
   * an error.
   **/
  public boolean isLoggingError ()
  {
    return true;
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pMessage,
			Throwable pRootCause)
    throws ELException
  {
    if (isLoggingError ()) {
      if (pMessage == null) {
	throw new ELException (pRootCause);
      }
      else if (pRootCause == null) {
	throw new ELException (pMessage);
      }
      else {
	throw new ELException (pMessage, pRootCause);
      }
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate)
    throws ELException
  {
    if (isLoggingError ()) {
      logError (pTemplate, null);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (Throwable pRootCause)
    throws ELException
  {
    if (isLoggingError ()) {
      logError (null, pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Object pArg0)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Throwable pRootCause,
			Object pArg0)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Object pArg0,
			Object pArg1)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Throwable pRootCause,
			Object pArg0,
			Object pArg1)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Object pArg0,
			Object pArg1,
			Object pArg2)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Throwable pRootCause,
			Object pArg0,
			Object pArg1,
			Object pArg2)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Object pArg0,
			Object pArg1,
			Object pArg2,
			Object pArg3)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Throwable pRootCause,
			Object pArg0,
			Object pArg1,
			Object pArg2,
			Object pArg3)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Object pArg0,
			Object pArg1,
			Object pArg2,
			Object pArg3,
			Object pArg4)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	    "" + pArg4,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Throwable pRootCause,
			Object pArg0,
			Object pArg1,
			Object pArg2,
			Object pArg3,
			Object pArg4)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	    "" + pArg4,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Object pArg0,
			Object pArg1,
			Object pArg2,
			Object pArg3,
			Object pArg4,
			Object pArg5)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	    "" + pArg4,
	    "" + pArg5,
	  }));
    }
  }

  //-------------------------------------
  /**
   *
   * Logs an error
   **/
  public void logError (String pTemplate,
			Throwable pRootCause,
			Object pArg0,
			Object pArg1,
			Object pArg2,
			Object pArg3,
			Object pArg4,
			Object pArg5)
    throws ELException
  {
    if (isLoggingError ()) {
      logError
	(MessageFormat.format
	 (pTemplate,
	  new Object [] {
	    "" + pArg0,
	    "" + pArg1,
	    "" + pArg2,
	    "" + pArg3,
	    "" + pArg4,
	    "" + pArg5,
	  }),
	 pRootCause);
    }
  }

  //-------------------------------------
}
