emptylistupdateexception.java

Jena推理机

/*****************************************************************************
 * Source code information
 * -----------------------
 * Original author    Ian Dickinson, HP Labs Bristol
 * Author email       [e-mail]
 * Package            Jena 2
 * Web                http://sourceforge.net/projects/jena/
 * Created            16-Jun-2003
 * Filename           $RCSfile: EmptyListUpdateException.java,v $
 * Revision           $Revision: 1.6 $
 * Release status     $State: Exp $
 *
 * Last modified on   $Date: 2007/01/02 11:48:35 $
 *               by   $Author: andy_seaborne $
 *
 * (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007 Hewlett-Packard Development Company, LP
 * (see footer for full conditions)
 *****************************************************************************/

// Package
///////////////
package com.hp.hpl.jena.rdf.model;



// Imports
///////////////
import com.hp.hpl.jena.shared.JenaException;


/**
 * <p>
 * Exception that is thrown when an attept is made to perform a side-effectful
 * operation on an {@link RDFList} that is the empty list, or <code>rdf:nil</code>.
 * This is not permissible, since it would cause the URI of the RDFList to change
 * from <code>rdf:nil</code> to a new bNode, and in Jena the URI of a node is
 * invariant.  To avoid this operation, when extending an empty list use operations
 * that return the updated list (such as {@link RDFList#cons}, or {@link RDFList#with},
 * or check first to see if the list {@linkplain RDFList#isEmpty is empty}, and replace
 * it with a non-null list.
 * </p>
 *
 * @author Ian Dickinson, HP Labs
 *         (<a  href="mailto:[e-mail]" >email</a>)
 * @version CVS $Id: EmptyListUpdateException.java,v 1.6 2007/01/02 11:48:35 andy_seaborne Exp $
 */
public class EmptyListUpdateException 
    extends JenaException
{
    // Constants
    //////////////////////////////////

    // Static variables
    //////////////////////////////////

    // Instance variables
    //////////////////////////////////

    // Constructors
    //////////////////////////////////

    public EmptyListUpdateException() {
    }
    
    public EmptyListUpdateException( String message ) {
        super( message );
    }
    
    
    // External signature methods
    //////////////////////////////////

    // Internal implementation methods
    //////////////////////////////////

    //==============================================================================
    // Inner class definitions
    //==============================================================================

}


/*
    (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007 Hewlett-Packard Development Company, LP
    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 name of the author may not be used to endorse or promote products
       derived from this software without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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.
*/