1 /*
2 * ObjectLab, http://www.objectlab.co.uk/open is sponsoring the ObjectLab Kit.
3 *
4 * Based in London, we are world leaders in the design and development
5 * of bespoke applications for the securities financing markets.
6 *
7 * <a href="http://www.objectlab.co.uk/open">Click here to learn more</a>
8 * ___ _ _ _ _ _
9 * / _ \| |__ (_) ___ ___| |_| | __ _| |__
10 * | | | | '_ \| |/ _ \/ __| __| | / _` | '_ \
11 * | |_| | |_) | | __/ (__| |_| |__| (_| | |_) |
12 * \___/|_.__// |\___|\___|\__|_____\__,_|_.__/
13 * |__/
14 *
15 * www.ObjectLab.co.uk
16 *
17 * $Id$
18 *
19 * Copyright 2006 the original author or authors.
20 *
21 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
22 * use this file except in compliance with the License. You may obtain a copy of
23 * the License at
24 *
25 * http://www.apache.org/licenses/LICENSE-2.0
26 *
27 * Unless required by applicable law or agreed to in writing, software
28 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
29 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
30 * License for the specific language governing permissions and limitations under
31 * the License.
32 */package net.objectlab.kit.datecalc.jdk;
33
34 import java.util.Calendar;
35
36 import net.objectlab.kit.datecalc.common.BaseCalculator;
37 import net.objectlab.kit.datecalc.common.HolidayHandler;
38 import net.objectlab.kit.datecalc.common.HolidayHandlerType;
39 import net.objectlab.kit.datecalc.common.NonWorkingDayChecker;
40
41 /**
42 * A Jdk <code>Calendar</code> implementation of the
43 * {@link net.objectlab.kit.datecalc.common.HolidayHandler}, for the
44 * <strong>Modified Following</strong> algorithm.
45 *
46 * @author Marcin Jekot
47 *
48 */
49 public class CalendarModifiedFollowingHandler implements HolidayHandler<Calendar> {
50
51 /**
52 * If the current date of the give calculator is a non-working day, it will
53 * be moved according to the algorithm implemented.
54 *
55 * @param calculator
56 * the calculator
57 * @return the date which may have moved.
58 */
59 public Calendar moveCurrentDate(final BaseCalculator<Calendar> calculator) {
60 return adjustDate(calculator.getCurrentBusinessDate(), 1, calculator);
61 }
62
63 // -----------------------------------------------------------------------
64 //
65 // ObjectLab, world leaders in the design and development of bespoke
66 // applications for the securities financing markets.
67 // www.ObjectLab.co.uk
68 //
69 // -----------------------------------------------------------------------
70 public Calendar adjustDate(final Calendar startDate, final int increment, final NonWorkingDayChecker<Calendar> checker) {
71 final Calendar cal = (Calendar) startDate.clone();
72 int step = increment;
73 final int month = cal.get(Calendar.MONTH);
74
75 while (checker.isNonWorkingDay(cal)) {
76 cal.add(Calendar.DAY_OF_MONTH, step);
77 if (month != cal.get(Calendar.MONTH)) {
78 // switch direction and go back
79 step *= -1;
80 cal.add(Calendar.DAY_OF_MONTH, step);
81 }
82 }
83
84 return cal;
85 }
86
87 /**
88 * Give the type name for this algorithm.
89 *
90 * @return algorithm name.
91 */
92 public String getType() {
93 return HolidayHandlerType.MODIFIED_FOLLOWING;
94 }
95 }
96
97 /*
98 * ObjectLab, http://www.objectlab.co.uk/open is sponsoring the ObjectLab Kit.
99 *
100 * Based in London, we are world leaders in the design and development
101 * of bespoke applications for the securities financing markets.
102 *
103 * <a href="http://www.objectlab.co.uk/open">Click here to learn more about us</a>
104 * ___ _ _ _ _ _
105 * / _ \| |__ (_) ___ ___| |_| | __ _| |__
106 * | | | | '_ \| |/ _ \/ __| __| | / _` | '_ \
107 * | |_| | |_) | | __/ (__| |_| |__| (_| | |_) |
108 * \___/|_.__// |\___|\___|\__|_____\__,_|_.__/
109 * |__/
110 *
111 * www.ObjectLab.co.uk
112 */