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Posted to dev@commons.apache.org by dl...@apache.org on 2002/08/25 21:18:48 UTC

cvs commit: jakarta-commons/lang/src/java/org/apache/commons/lang/exception NestableError.java

dlr         2002/08/25 12:18:48

  Added:       lang/src/java/org/apache/commons/lang/exception
                        NestableError.java
  Log:
  NestableError suggested by Stephen C.  Basically a clone of
  NestableException.
  
  Revision  Changes    Path
  1.1                  jakarta-commons/lang/src/java/org/apache/commons/lang/exception/NestableError.java
  
  Index: NestableError.java
  ===================================================================
  package org.apache.commons.lang.exception;
  
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2002 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  
  import java.io.OutputStream;
  import java.io.PrintStream;
  import java.io.PrintWriter;
  
  /**
   * The base class of all errors which can contain other exceptions.
   *
   * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
   * @see org.apache.commons.lang.exception.NestableException
   * @since 1.0
   */
  public class NestableError extends Exception implements Nestable
  {
      /**
       * The helper instance which contains much of the code which we
       * delegate to.
       */
      protected NestableDelegate delegate = new NestableDelegate(this);
  
      /**
       * Holds the reference to the exception or error that caused
       * this exception to be thrown.
       */
      private Throwable cause = null;
  
      /**
       * Constructs a new <code>NestableError</code> without specified
       * detail message.
       */
      public NestableError()
      {
          super();
      }
  
      /**
       * Constructs a new <code>NestableError</code> with specified
       * detail message.
       *
       * @param msg The error message.
       */
      public NestableError(String msg)
      {
          super(msg);
      }
  
      /**
       * Constructs a new <code>NestableError</code> with specified
       * nested <code>Throwable</code>.
       *
       * @param cause the exception or error that caused this exception to be
       * thrown
       */
      public NestableError(Throwable cause)
      {
          super();
          this.cause = cause;
      }
  
      /**
       * Constructs a new <code>NestableError</code> with specified
       * detail message and nested <code>Throwable</code>.
       *
       * @param msg    the error message
       * @param cause  the exception or error that caused this exception to be
       * thrown
       */
      public NestableError(String msg, Throwable cause)
      {
          super(msg);
          this.cause = cause;
      }
  
      public Throwable getCause()
      {
          return cause;
      }
  
      public String getMessage()
      {
          return delegate.getMessage(super.getMessage());
      }
  
      public String getMessage(int index)
      {
          if (index == 0)
          {
              return super.getMessage();
          }
          else
          {
              return delegate.getMessage(index);
          }
      }
      
      public String[] getMessages()
      {
          return delegate.getMessages();
      }
      
      public Throwable getThrowable(int index)
      {
          return delegate.getThrowable(index);
      }
      
      public int getThrowableCount()
      {
          return delegate.getThrowableCount();
      }
      
      public Throwable[] getThrowables()
      {
          return delegate.getThrowables();
      }
      
      public int indexOfThrowable(Class type)
      {
          return delegate.indexOfThrowable(type, 0);
      }
  
      public int indexOfThrowable(Class type, int fromIndex)
      {
          return delegate.indexOfThrowable(type, fromIndex);
      }
  
      public void printStackTrace()
      {
          delegate.printStackTrace();
      }
  
      public void printStackTrace(PrintStream out)
      {
          delegate.printStackTrace(out);
      }
  
      public void printStackTrace(PrintWriter out)
      {
          delegate.printStackTrace(out);
      }
  
      public final void printPartialStackTrace(PrintWriter out)
      {
          super.printStackTrace(out);
      }
  }
  
  
  

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