Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
DelegatingHiLoGenerator |
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1 | /** | |
2 | The contents of this file are subject to the Mozilla Public License Version 1.1 | |
3 | (the "License"); you may not use this file except in compliance with the License. | |
4 | You may obtain a copy of the License at http://www.mozilla.org/MPL/ | |
5 | Software distributed under the License is distributed on an "AS IS" basis, | |
6 | WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the | |
7 | specific language governing rights and limitations under the License. | |
8 | ||
9 | The Original Code is "DelegatingHiLoGenerator.java". Description: | |
10 | "Generator that delegates generation of hi IDs " | |
11 | ||
12 | The Initial Developer of the Original Code is University Health Network. Copyright (C) | |
13 | 2001. All Rights Reserved. | |
14 | ||
15 | Contributor(s): ______________________________________. | |
16 | ||
17 | Alternatively, the contents of this file may be used under the terms of the | |
18 | GNU General Public License (the "GPL"), in which case the provisions of the GPL are | |
19 | applicable instead of those above. If you wish to allow use of your version of this | |
20 | file only under the terms of the GPL and not to allow others to use your version | |
21 | of this file under the MPL, indicate your decision by deleting the provisions above | |
22 | and replace them with the notice and other provisions required by the GPL License. | |
23 | If you do not delete the provisions above, a recipient may use your version of | |
24 | this file under either the MPL or the GPL. | |
25 | */ | |
26 | package ca.uhn.hl7v2.util.idgenerator; | |
27 | ||
28 | import java.io.IOException; | |
29 | ||
30 | /** | |
31 | * Default implementation of a HiLo ID generator that allows to use another | |
32 | * (non-HiLo) ID generator for generating the "hi" part of the ID. The delegate | |
33 | * must increment its ID is discrete steps > 1, so that the gaps can be filled | |
34 | * with "lo" IDs. | |
35 | * <p> | |
36 | * Example: | |
37 | * </p> | |
38 | * <pre> | |
39 | * Hi IDs: 0, 100, 200, 300 (increment = 100) | |
40 | * Lo IDs: 1,2,3,...,100,1,2,3,.... | |
41 | * Resulting ID (Hi + Lo): 1,2,3,99,100,101,102,... | |
42 | * </pre> | |
43 | * | |
44 | * @see FileBasedHiLoGenerator | |
45 | * @author Christian Ohr | |
46 | */ | |
47 | public class DelegatingHiLoGenerator extends HiLoGenerator { | |
48 | ||
49 | private IDGenerator.Ordered delegate; | |
50 | ||
51 | public DelegatingHiLoGenerator() { | |
52 | 0 | super(); |
53 | 0 | } |
54 | ||
55 | public DelegatingHiLoGenerator(IDGenerator.Ordered delegate) { | |
56 | 5530 | super(); |
57 | 5530 | this.delegate = delegate; |
58 | 5530 | } |
59 | ||
60 | @Override | |
61 | protected long getNextHiId() throws IOException { | |
62 | 890 | if (delegate == null) |
63 | 0 | throw new NullPointerException( |
64 | "Must initialize delegate IDGenerator"); | |
65 | 890 | return Long.parseLong(delegate.getID()); |
66 | } | |
67 | ||
68 | public void setDelegate(IDGenerator.Ordered delegate) { | |
69 | 0 | this.delegate = delegate; |
70 | 0 | } |
71 | ||
72 | @Override | |
73 | protected void resetHiId() { | |
74 | 10 | delegate.reset(); |
75 | 10 | } |
76 | ||
77 | /** | |
78 | * THe maximum "lo" ID is the increment of the hi ID. | |
79 | * @return | |
80 | */ | |
81 | @Override | |
82 | public long getMaxLo() { | |
83 | 7433 | return delegate.getIncrement(); |
84 | } | |
85 | ||
86 | } |