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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
Jsr94FactHandleFactory.java | - | 100% | 100% | 100% |
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1 | package org.drools.jsr94.rules; | |
2 | ||
3 | /* | |
4 | * $Id: Jsr94FactHandleFactory.java,v 1.16 2004/12/04 04:58:26 dbarnett Exp $ | |
5 | * | |
6 | * Copyright 2003-2004 (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 | import org.drools.FactHandle; | |
45 | import org.drools.reteoo.FactHandleFactory; | |
46 | ||
47 | /** | |
48 | * A factory for creating <code>Handle</code>s. | |
49 | */ | |
50 | public final class Jsr94FactHandleFactory implements FactHandleFactory | |
51 | { | |
52 | /** The Singleton instance of the <code>Jsr94FactHandleFactory</code>. */ | |
53 | private static Jsr94FactHandleFactory INSTANCE = new Jsr94FactHandleFactory(); | |
54 | ||
55 | /** The fact id. */ | |
56 | private long id; | |
57 | ||
58 | /** The number of facts created - used for recency. */ | |
59 | private long counter; | |
60 | ||
61 | /** Private constructor; use <code>getInstance</code> instead. */ | |
62 | 2 | private Jsr94FactHandleFactory( ) |
63 | { | |
64 | // Hide the constructor. | |
65 | } | |
66 | ||
67 | /** | |
68 | * Gets the Singleton instance of a <code>Jsr94FactHandleFactory</code>. | |
69 | * | |
70 | * @return The Singleton instance of the repository. | |
71 | */ | |
72 | 61 | public static Jsr94FactHandleFactory getInstance( ) |
73 | { | |
74 | 61 | return INSTANCE; |
75 | } | |
76 | ||
77 | /** | |
78 | * Returns a new <code>Handle</code>. | |
79 | * | |
80 | * @return a new <code>Handle</code>. | |
81 | */ | |
82 | 765 | public synchronized FactHandle newFactHandle() |
83 | { | |
84 | 765 | return newFactHandle( ++id ); |
85 | } | |
86 | ||
87 | /** | |
88 | * Returns a new <code>Handle</code>. | |
89 | * | |
90 | * @param id A unique <code>Handle</code> id. | |
91 | * | |
92 | * @return a new <code>Handle</code> with the given id. | |
93 | */ | |
94 | 765 | public synchronized FactHandle newFactHandle( long id ) |
95 | { | |
96 | 765 | return new Jsr94FactHandle( id, |
97 | ++counter ); | |
98 | } | |
99 | } |
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