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Java > Open Source Codes > com > hp > hpl > jena > rdf > model > EmptyListUpdateException


1 /*****************************************************************************
2  * Source code information
3  * -----------------------
4  * Original author Ian Dickinson, HP Labs Bristol
5  * Author email Ian.Dickinson@hp.com
6  * Package Jena 2
7  * Web http://sourceforge.net/projects/jena/
8  * Created 16-Jun-2003
9  * Filename $RCSfile: EmptyListUpdateException.java,v $
10  * Revision $Revision: 1.4 $
11  * Release status $State: Exp $
12  *
13  * Last modified on $Date: 2005/02/21 12:14:01 $
14  * by $Author: andy_seaborne $
15  *
16  * (c) Copyright 2002, 2003, 2004, 2005 Hewlett-Packard Development Company, LP
17  * (see footer for full conditions)
18  *****************************************************************************/
19
20 // Package
21 ///////////////
22 package com.hp.hpl.jena.rdf.model;
23
24
25
26 // Imports
27 ///////////////
28 import com.hp.hpl.jena.shared.JenaException;
29
30
31 /**
32  * <p>
33  * Exception that is thrown when an attept is made to perform a side-effectful
34  * operation on an {@link RDFList} that is the empty list, or <code>rdf:nil</code>.
35  * This is not permissible, since it would cause the URI of the RDFList to change
36  * from <code>rdf:nil</code> to a new bNode, and in Jena the URI of a node is
37  * invariant. To avoid this operation, when extending an empty list use operations
38  * that return the updated list (such as {@link RDFList#cons}, or {@link RDFList#with},
39  * or check first to see if the list {@linkplain RDFList#isEmpty is empty}, and replace
40  * it with a non-null list.
41  * </p>
42  *
43  * @author Ian Dickinson, HP Labs
44  * (<a HREF="mailto:Ian.Dickinson@hp.com" >email</a>)
45  * @version CVS $Id: EmptyListUpdateException.java,v 1.4 2005/02/21 12:14:01 andy_seaborne Exp $
46  */
47 public class EmptyListUpdateException
48     extends JenaException
49 {
50     // Constants
51 //////////////////////////////////
52
53     // Static variables
54 //////////////////////////////////
55
56     // Instance variables
57 //////////////////////////////////
58
59     // Constructors
60 //////////////////////////////////
61
62     public EmptyListUpdateException() {
63     }
64     
65     public EmptyListUpdateException( String JavaDoc message ) {
66         super( message );
67     }
68     
69     
70     // External signature methods
71 //////////////////////////////////
72
73     // Internal implementation methods
74 //////////////////////////////////
75
76     //==============================================================================
77 // Inner class definitions
78 //==============================================================================
79
80 }
81
82
83 /*
84     (c) Copyright 2002, 2003, 2004, 2005 Hewlett-Packard Development Company, LP
85     All rights reserved.
86
87     Redistribution and use in source and binary forms, with or without
88     modification, are permitted provided that the following conditions
89     are met:
90
91     1. Redistributions of source code must retain the above copyright
92        notice, this list of conditions and the following disclaimer.
93
94     2. Redistributions in binary form must reproduce the above copyright
95        notice, this list of conditions and the following disclaimer in the
96        documentation and/or other materials provided with the distribution.
97
98     3. The name of the author may not be used to endorse or promote products
99        derived from this software without specific prior written permission.
100
101     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
102     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
103     OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
104     IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
105     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
106     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
107     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
108     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
109     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
110     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
111 */
112
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