プロジェクトの再スケジュール

開始日または終了日からプロジェクトを再スケジュールする

このトピックは、JavaのAspose.Tasksを使用して、プロジェクトの開始/終了日からプロジェクトを再スケジュールする方法を示しています。

終了日からプロジェクトを再スケジュールする

プロジェクトの終了日を設定し、Project.Recalculate()メソッドを呼び出すことにより、終了日から日付を再計算できます。タスクのスラックを早期/遅い日付に基づいて計算できます。

プログラミングサンプル

次のコード行は、Javaを使用してこれを達成する方法を示しています

// For complete examples and data files, please go to https://github.com/aspose-tasks/Aspose.Tasks-for-Java
// The path to the documents directory.
String dataDir = Utils.getDataDir(RescheduleProjectFromStartOrFinishDate.class);

Project project = new Project(dataDir + "Project.mpp");
project.set(Prj.SCHEDULE_FROM_START, new NullableBool(false));
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(2020, 1, 1, 0, 0, 0);
project.set(Prj.FINISH_DATE, cal.getTime());

// Now all tasks dates (Start, Finish, EarlyStart, EarlyFinish,
// LateStart,
// LateFinish) are calculated.
// To get the critical path we need to calculate slacks (can be invoked
// in
// separate thread, but only after calculation of all early/late dates)
project.recalculate();
TaskCollection criticalPath = project.getCriticalPath();

Rescheduling a Project from the Start Date

We can calculate dates from start date by setting the project start date and then invoke the Project.recalculate() method.

The following lines of code show how to achieve this using Java.

// For complete examples and data files, please go to https://github.com/aspose-tasks/Aspose.Tasks-for-Java
// The path to the documents directory.
String dataDir = Utils.getDataDir(RescheduleProjectFromStartOrFinishDate.class);

Project project = new Project(dataDir + "Project.mpp");
project.set(Prj.SCHEDULE_FROM_START, new NullableBool(true));
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(2020, 1, 1, 0, 0, 0);
project.set(Prj.START_DATE, cal.getTime());

// Now all tasks dates (Start, Finish, EarlyStart, EarlyFinish,
// LateStart,
// LateFinish) are calculated.
// To get the critical path we need to calculate slacks (can be invoked
// in
// separate thread, but only after calculation of all early/late dates)
project.recalculate();
TaskCollection criticalPath = project.getCriticalPath();

Update Project and Reschedule Uncompleted Work

Microsoft Project lets users update and reschedule work through a defined date. This helps identify work completed up to the specified date as well as reschedule any uncompleted work from a specified date. Aspose.Tasks ’ Project API provides the same functionality by exposing the updateProjectWorkAsComplete and rescheduleUncompletedWorkToStartAfter methods. This article provides a working example of both these methods as a single use case.

Update Project

This topic demonstrates how to update a project through a specified date. The updateProjectWorkAsComplete method updates all the work as complete through a specified date for an entire project.

• If the Boolean input parameter is set to true, the method updates only those tasks to 100% complete that have finish dates before the specified completed-through date.
• If the Boolean input parameter is set to false, the method calculates a percentage complete value based on the scheduled state and complete through dates.
• If a list of task is specified, the method updates all work as complete through the specified date for the list of tasks.

The following sample demonstrates how to achieve this

// For complete examples and data files, please go to https://github.com/aspose-tasks/Aspose.Tasks-for-Java
// The path to the documents directory.
String dataDir = Utils.getDataDir(UpdateProjectAndRescheduleuncompletedwork.class);

long OneSec = 10000000;// microsecond * 10
long OneMin = 60 * OneSec;
long OneHour = 60 * OneMin;

Project project = new Project();

java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(2014, 1, 27, 8, 0, 0);
project.set(Prj.START_DATE, cal.getTime());

Task task1 = project.getRootTask().getChildren().add("Task 1");
Task task2 = project.getRootTask().getChildren().add("Task 2");
task2.set(Tsk.DURATION, task2.getParentProject().getDuration(16, TimeUnitType.Hour));
Task task3 = project.getRootTask().getChildren().add("Task 3");
task3.set(Tsk.DURATION, task2.getParentProject().getDuration(24, TimeUnitType.Hour));
Task task4 = project.getRootTask().getChildren().add("Task 4");
task4.set(Tsk.DURATION, task2.getParentProject().getDuration(16, TimeUnitType.Hour));
Task task5 = project.getRootTask().getChildren().add("Task 5");
task5.set(Tsk.DURATION, task2.getParentProject().getDuration(16, TimeUnitType.Hour));

TaskLink link12 = project.getTaskLinks().add(task1, task2, TaskLinkType.FinishToStart);
TaskLink link23 = project.getTaskLinks().add(task2, task3, TaskLinkType.FinishToStart);
link23.setLinkLag(4800); // one day lag
TaskLink link34 = project.getTaskLinks().add(task3, task4, TaskLinkType.FinishToStart);
TaskLink link45 = project.getTaskLinks().add(task4, task5, TaskLinkType.FinishToStart);

Task task6 = project.getRootTask().getChildren().add("Task 6");
Task task7 = project.getRootTask().getChildren().add("Task 7");
task7.set(Tsk.DURATION, task7.getParentProject().getDuration(24, TimeUnitType.Hour));
Task task8 = project.getRootTask().getChildren().add("Task 8");
task8.set(Tsk.DURATION, task2.getParentProject().getDuration(16, TimeUnitType.Hour));
Task task9 = project.getRootTask().getChildren().add("Task 9");
task9.set(Tsk.DURATION, task2.getParentProject().getDuration(16, TimeUnitType.Hour));
Task task10 = project.getRootTask().getChildren().add("Task 10");

TaskLink link67 = project.getTaskLinks().add(task6, task7, TaskLinkType.FinishToStart);
TaskLink link78 = project.getTaskLinks().add(task7, task8, TaskLinkType.FinishToStart);
TaskLink link89 = project.getTaskLinks().add(task8, task9, TaskLinkType.FinishToStart);
TaskLink link910 = project.getTaskLinks().add(task9, task10, TaskLinkType.FinishToStart);

task6.set(Tsk.IS_MANUAL, new NullableBool(true));
task7.set(Tsk.IS_MANUAL, new NullableBool(true));
task8.set(Tsk.IS_MANUAL, new NullableBool(true));
task9.set(Tsk.IS_MANUAL, new NullableBool(true));
task10.set(Tsk.IS_MANUAL, new NullableBool(true));

project.save(dataDir + "not updated.xml", SaveFileFormat.XML);

cal.set(2014, 1, 28, 17, 0, 0);
project.updateProjectWorkAsComplete(cal.getTime(), false);

project.save(dataDir + "updated.xml", SaveFileFormat.XML);

cal.set(2014, 1, 28, 17, 0, 0);
project.rescheduleUncompletedWorkToStartAfter(cal.getTime());

project.save(dataDir + "rescheduled.xml", SaveFileFormat.XML);