001: /*
002: The contents of this file are subject to the Common Public Attribution License
003: Version 1.0 (the "License"); you may not use this file except in compliance with
004: the License. You may obtain a copy of the License at
005: http://www.projity.com/license . The License is based on the Mozilla Public
006: License Version 1.1 but Sections 14 and 15 have been added to cover use of
007: software over a computer network and provide for limited attribution for the
008: Original Developer. In addition, Exhibit A has been modified to be consistent
009: with Exhibit B.
010:
011: Software distributed under the License is distributed on an "AS IS" basis,
012: WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
013: specific language governing rights and limitations under the License. The
014: Original Code is OpenProj. The Original Developer is the Initial Developer and
015: is Projity, Inc. All portions of the code written by Projity are Copyright (c)
016: 2006, 2007. All Rights Reserved. Contributors Projity, Inc.
017:
018: Alternatively, the contents of this file may be used under the terms of the
019: Projity End-User License Agreeement (the Projity License), in which case the
020: provisions of the Projity License are applicable instead of those above. If you
021: wish to allow use of your version of this file only under the terms of the
022: Projity License and not to allow others to use your version of this file under
023: the CPAL, indicate your decision by deleting the provisions above and replace
024: them with the notice and other provisions required by the Projity License. If
025: you do not delete the provisions above, a recipient may use your version of this
026: file under either the CPAL or the Projity License.
027:
028: [NOTE: The text of this license may differ slightly from the text of the notices
029: in Exhibits A and B of the license at http://www.projity.com/license. You should
030: use the latest text at http://www.projity.com/license for your modifications.
031: You may not remove this license text from the source files.]
032:
033: Attribution Information: Attribution Copyright Notice: Copyright © 2006, 2007
034: Projity, Inc. Attribution Phrase (not exceeding 10 words): Powered by OpenProj,
035: an open source solution from Projity. Attribution URL: http://www.projity.com
036: Graphic Image as provided in the Covered Code as file: openproj_logo.png with
037: alternatives listed on http://www.projity.com/logo
038:
039: Display of Attribution Information is required in Larger Works which are defined
040: in the CPAL as a work which combines Covered Code or portions thereof with code
041: not governed by the terms of the CPAL. However, in addition to the other notice
042: obligations, all copies of the Covered Code in Executable and Source Code form
043: distributed must, as a form of attribution of the original author, include on
044: each user interface screen the "OpenProj" logo visible to all users. The
045: OpenProj logo should be located horizontally aligned with the menu bar and left
046: justified on the top left of the screen adjacent to the File menu. The logo
047: must be at least 100 x 25 pixels. When users click on the "OpenProj" logo it
048: must direct them back to http://www.projity.com.
049: */
050: package com.projity.pm.scheduling;
051:
052: import com.projity.datatype.Duration;
053: import com.projity.pm.assignment.Allocation;
054: import com.projity.pm.assignment.Assignment;
055: import com.projity.strings.Messages;
056:
057: /**
058: * @stereotype strategy
059: * Work = Units * Duration
060: * In a... If you revise units... If you revise duration... If you revise work...
061: * Fixed-units task Duration is recalculated. Work is recalculated. Duration is recalculated.
062: */
063:
064: public class FixedUnits implements SchedulingRule {
065: public String toString() {
066: return Messages.getString("FixedUnits.FixedUnits"); //$NON-NLS-1$
067: }
068:
069: /*
070: * If you revise units, Duration is recalculated. They are inversely proportional
071: */
072: public void adjustRemainingUnits(Allocation allocation,
073: double newRemainingUnits, double oldRemainingUnits,
074: boolean doChildren, boolean conserveTotalUnits) {
075: Assignment result;
076: if (newRemainingUnits == 0.0) {// treat degenerate case. Assigning 0 to units makes the task a milestone, but units becomes 1.0
077: allocation.adjustRemainingDuration(0, doChildren);
078: allocation.adjustRemainingUnits(1.0, oldRemainingUnits,
079: doChildren, false);
080: } else {
081: if (oldRemainingUnits == 0.0) {// special case
082: allocation.adjustRemainingUnits(1.0, oldRemainingUnits,
083: false, false);
084: } else {
085: allocation.adjustRemainingWork(oldRemainingUnits
086: / newRemainingUnits, doChildren);
087: }
088: }
089: }
090:
091: /*
092: * If you revise duration, Work is recalculated
093: */
094: public void adjustRemainingDuration(Allocation allocation,
095: long newRemainingDuration, boolean doChildren) {
096: allocation.adjustRemainingDuration(newRemainingDuration,
097: doChildren);
098: }
099:
100: /*
101: * If you revise work, Duration is recalculated
102: */
103: public void adjustRemainingWork(Allocation allocation,
104: long newRemainingWork, boolean doChildren) {
105: long oldRemainingWork = allocation.getRemainingWork();
106: adjustRemainingWork(allocation, newRemainingWork,
107: oldRemainingWork, doChildren);
108: }
109:
110: public void adjustRemainingWork(Allocation allocation,
111: long newRemainingWork, long oldRemainingWork,
112: boolean doChildren) {
113: long newDuration;
114: if (oldRemainingWork == 0) { // degenerate case
115: newDuration = (long) (newRemainingWork / allocation
116: .getRemainingUnits());
117: } else {
118: newRemainingWork = Duration.millis(newRemainingWork);
119: newDuration = (long) (allocation.getRemainingDuration()
120: * ((double) newRemainingWork) / oldRemainingWork);
121: }
122: allocation.adjustRemainingDuration(newDuration, doChildren);
123: }
124:
125: private FixedUnits() {
126: }
127:
128: private static FixedUnits instance = null;
129:
130: public static FixedUnits getInstance() {
131: if (instance == null)
132: instance = new FixedUnits();
133: return instance;
134: }
135:
136: }
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