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NoSuchFactHandleException.java | 0% | 0% | 0% | 0% |
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1 | package org.drools; | |
2 | ||
3 | /* | |
4 | * $Id: NoSuchFactHandleException.java,v 1.3 2004/12/06 04:51:36 dbarnett Exp $ | |
5 | * | |
6 | * Copyright 2001-2004 (C) The Werken Company. All Rights Reserved. | |
7 | * | |
8 | * Redistribution and use of this software and associated documentation | |
9 | * ("Software"), with or without modification, are permitted provided that the | |
10 | * following conditions are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain copyright statements and | |
13 | * notices. Redistributions must also contain a copy of this document. | |
14 | * | |
15 | * 2. Redistributions in binary form must reproduce the above copyright notice, | |
16 | * this list of conditions and the following disclaimer in the documentation | |
17 | * and/or other materials provided with the distribution. | |
18 | * | |
19 | * 3. The name "drools" must not be used to endorse or promote products derived | |
20 | * from this Software without prior written permission of The Werken Company. | |
21 | * For written permission, please contact bob@werken.com. | |
22 | * | |
23 | * 4. Products derived from this Software may not be called "drools" nor may | |
24 | * "drools" appear in their names without prior written permission of The Werken | |
25 | * Company. "drools" is a registered trademark of The Werken Company. | |
26 | * | |
27 | * 5. Due credit should be given to The Werken Company. | |
28 | * (http://drools.werken.com/). | |
29 | * | |
30 | * THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS'' | |
31 | * AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
32 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
33 | * ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE | |
34 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
35 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
36 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
37 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
38 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
39 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
40 | * POSSIBILITY OF SUCH DAMAGE. | |
41 | * | |
42 | */ | |
43 | ||
44 | /** | |
45 | * Indicates an attempt to retract, modify or retrieve a fact object that is no | |
46 | * longer present. | |
47 | * | |
48 | * @see FactHandle | |
49 | * @see WorkingMemory#getFactHandle | |
50 | * | |
51 | * @author <a href="mailto:simon@redhillconsulting.com.au">Simon Harris </a> | |
52 | * | |
53 | * @version $Id: NoSuchFactObjectException.java,v 1.3 2003/11/19 21:31:09 bob | |
54 | * Exp $ | |
55 | */ | |
56 | public class NoSuchFactHandleException extends FactException | |
57 | { | |
58 | // ---------------------------------------------------------------------- | |
59 | // Instance members | |
60 | // ---------------------------------------------------------------------- | |
61 | ||
62 | /** Invalid fact object. */ | |
63 | private final Object object; | |
64 | ||
65 | // ---------------------------------------------------------------------- | |
66 | // Constructors | |
67 | // ---------------------------------------------------------------------- | |
68 | ||
69 | 0 | public NoSuchFactHandleException( ) |
70 | { | |
71 | 0 | this.object = null; |
72 | } | |
73 | ||
74 | /** | |
75 | * Construct. | |
76 | * | |
77 | * @param object | |
78 | * The invalid fact object. | |
79 | */ | |
80 | 0 | public NoSuchFactHandleException( Object object ) |
81 | { | |
82 | 0 | this.object = object; |
83 | } | |
84 | ||
85 | // ---------------------------------------------------------------------- | |
86 | // Instance methods | |
87 | // ---------------------------------------------------------------------- | |
88 | ||
89 | /** | |
90 | * Retrieve the invalid Object. | |
91 | * | |
92 | * @return The invalid fact object. | |
93 | */ | |
94 | 0 | public Object getObject( ) |
95 | { | |
96 | 0 | return this.object; |
97 | } | |
98 | ||
99 | // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | |
100 | ||
101 | /** | |
102 | * @see Throwable | |
103 | */ | |
104 | 0 | public String getMessage( ) |
105 | { | |
106 | 0 | if ( this.object == null ) |
107 | { | |
108 | 0 | return "invalid (null) fact object"; |
109 | } | |
110 | ||
111 | 0 | return "no such fact handle for object: " + object; |
112 | } | |
113 | } |
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