/*
Copyright 2003-2012 Dmitry Barashev, GanttProject Team
This file is part of GanttProject, an opensource project management tool.
GanttProject is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GanttProject is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GanttProject. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sourceforge.ganttproject.task.dependency.constraint;
import java.util.Date;
import java.util.List;
import biz.ganttproject.core.time.CalendarFactory;
import biz.ganttproject.core.time.GanttCalendar;
import net.sourceforge.ganttproject.GPLogger;
import net.sourceforge.ganttproject.language.GanttLanguage;
import net.sourceforge.ganttproject.task.Task;
import net.sourceforge.ganttproject.task.TaskActivity;
import net.sourceforge.ganttproject.task.dependency.TaskDependency;
import net.sourceforge.ganttproject.task.dependency.TaskDependencyConstraint;
import net.sourceforge.ganttproject.task.dependency.TaskDependency.ActivityBinding;
/**
* Dependant task starts not earlier than dependee finishes Created by IntelliJ
* IDEA. User: bard
*/
public class FinishStartConstraintImpl extends ConstraintImpl implements TaskDependencyConstraint {
public FinishStartConstraintImpl() {
super(TaskDependencyConstraint.Type.finishstart, GanttLanguage.getInstance().getText("finishstart"));
}
@Override
public TaskDependencyConstraint.Collision getCollision() {
TaskDependencyConstraint.Collision result = null;
Task dependee = getDependency().getDependee();
Task dependant = getDependency().getDependant();
GanttCalendar dependeeEnd = dependee.getEnd().clone();
// GanttCalendar dependeeEnd = dependee.getEnd();
GanttCalendar dependantStart = dependant.getStart();
addDelay(dependeeEnd);
// int difference = getDependency().getDifference();
GanttCalendar comparisonDate = dependantStart.clone();
// comparisonDate.add(difference);
boolean isActive = getDependency().getHardness() == TaskDependency.Hardness.RUBBER ? dependeeEnd.compareTo(comparisonDate) > 0
: dependeeEnd.compareTo(comparisonDate) != 0;
// new Exception("[FinishStartConstraint] isActive="+isActive+"
// dependdee="+dependee+" end="+dependeeEnd+"
// start="+dependantStart).printStackTrace();
result = new TaskDependencyConstraint.DefaultCollision(dependeeEnd,
TaskDependencyConstraint.Collision.START_LATER_VARIATION, isActive);
return result;
}
@Override
public Collision getBackwardCollision(Date dependantStart) {
if (dependantStart == null) {
System.err.println();
}
Task dependee = getDependency().getDependee();
GanttCalendar dependeeEnd = dependee.getEnd().clone();
Date barrier = shift(dependantStart, -getDependency().getDifference());
boolean isActive = getDependency().getHardness() == TaskDependency.Hardness.RUBBER ? dependeeEnd.getTime().compareTo(
barrier) > 0
: dependeeEnd.getTime().compareTo(barrier) != 0;
return new TaskDependencyConstraint.DefaultCollision(CalendarFactory.createGanttCalendar(barrier),
TaskDependencyConstraint.Collision.START_EARLIER_VARIATION, isActive);
}
@Override
public ActivityBinding getActivityBinding() {
List<TaskActivity> dependantActivities = getDependency().getDependant().getActivities();
List<TaskActivity> dependeeActivities = getDependency().getDependee().getActivities();
if (dependantActivities.isEmpty()) {
GPLogger.logToLogger("Task " + getDependency().getDependant() + " has no activities");
return null;
}
if (dependeeActivities.isEmpty()) {
GPLogger.logToLogger("Task " + getDependency().getDependee() + " has no activities");
return null;
}
TaskActivity theDependant = dependantActivities.get(0);
TaskActivity theDependee = dependeeActivities.get(dependeeActivities.size() - 1);
return new DependencyActivityBindingImpl(theDependant, theDependee, new Date[] { theDependant.getStart(),
theDependee.getEnd() });
}
}