1 /*
2 * Copyright 2007-2011 smartics, Kronseder & Reiner GmbH
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package de.smartics.exceptions.report.sort;
17
18 import java.util.Comparator;
19
20 import de.smartics.exceptions.code.DefaultCodeComparator;
21 import de.smartics.exceptions.code.NumberCode;
22 import de.smartics.exceptions.code.NumberCodeComparator;
23 import de.smartics.exceptions.core.Code;
24 import de.smartics.exceptions.report.sort.CodeUtils.CodeContainer;
25
26 /**
27 * Compares exception code information instances. The instances are ordered by
28 * their codes. This implementation takes care if the code stored is a simple
29 * {@link Code} or a {@link NumberCode}.
30 *
31 * @todo It may be somewhat tricky to ensure that the compareTo rules are
32 * enforced. Maybe we should remove this one?
33 * @author <a href="mailto:robert.reiner@smartics.de">Robert Reiner</a>
34 * @version $Revision:591 $
35 */
36 public class MixedCodeComparator implements Comparator<CodeContainer>
37 {
38 // ********************************* Fields *********************************
39
40 // --- constants ------------------------------------------------------------
41
42 /**
43 * Singleton instance for reuse.
44 */
45 public static final MixedCodeComparator INSTANCE = new MixedCodeComparator();
46
47 // --- members --------------------------------------------------------------
48
49 // ****************************** Initializer *******************************
50
51 // ****************************** Constructors ******************************
52
53 /**
54 * Default constructor.
55 * <p>
56 * Consider to use {@link #INSTANCE the singleton}.
57 * </p>
58 */
59 public MixedCodeComparator()
60 {
61 }
62
63 // ****************************** Inner Classes *****************************
64
65 // ********************************* Methods ********************************
66
67 // --- init -----------------------------------------------------------------
68
69 // --- get&set --------------------------------------------------------------
70
71 // --- business -------------------------------------------------------------
72
73 /**
74 * {@inheritDoc}
75 *
76 * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
77 */
78 public int compare(final CodeContainer o1, final CodeContainer o2)
79 {
80 final Code c1 = o1.getCode();
81 final Code c2 = o2.getCode();
82
83 if (c1 instanceof NumberCode && c2 instanceof NumberCode)
84 {
85 final NumberCodeComparator<NumberCode> comparator =
86 new NumberCodeComparator<NumberCode>();
87 return comparator.compare((NumberCode) c1, (NumberCode) c2);
88 }
89 else
90 {
91 final DefaultCodeComparator<Code> comparator =
92 new DefaultCodeComparator<Code>();
93 return comparator.compare(c1, c2);
94 }
95 }
96
97 // --- object basics --------------------------------------------------------
98
99 }