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.time;
051:
052: import java.io.Serializable;
053: import java.util.Comparator;
054:
055: import com.projity.util.MathUtils;
056:
057: /**
058: *
059: */
060: public abstract class Interval implements HasStartAndEnd, Comparable,
061: Comparator, Serializable {
062: static final long serialVersionUID = 26373991911119L;
063: protected long start;
064: protected long end;
065:
066: public Interval(long start, long end) {
067: this .start = start;
068: this .end = end;
069: }
070:
071: /* (non-Javadoc)
072: * @see com.projity.pm.time.HasStartAndEnd#getStart()
073: */
074: public long getStart() {
075: return start;
076: }
077:
078: /* (non-Javadoc)
079: * @see com.projity.pm.time.HasStartAndEnd#getEnd()
080: */
081: public long getEnd() {
082: return end;
083: }
084:
085: public long getElapsedDuration() {
086: return end - start; // no calendars needed
087: }
088:
089: /* (non-Javadoc)
090: * @see java.lang.Comparable#compareTo(java.lang.Object)
091: */
092: public int compareTo(Object arg0) {
093: return compare(this , arg0);
094: }
095:
096: /* (non-Javadoc)
097: * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
098: */
099: public int compare(Object t1, Object t2) {
100: if (!(t1 instanceof HasStartAndEnd)
101: || !(t2 instanceof HasStartAndEnd))
102: return 0;
103:
104: return MathUtils.signum(((HasStartAndEnd) t1).getStart()
105: - ((HasStartAndEnd) t2).getStart());
106: }
107:
108: public boolean equals(Object arg0) {
109: if (!(arg0 instanceof Interval))
110: return false;
111: Interval to = (Interval) arg0;
112: return (start == to.start && end == to.end);
113: }
114: }
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