/// <summary>アクティビティを定義する</summary>
/// <param name="id">ID</param>
/// <param name="name">名称</param>
/// <param name="externalCost">支出</param>
/// <param name="income">収入</param>
/// <param name="fixTime">固定時間</param>
/// <param name="workLoad">作業量</param>
/// <param name="failRate">失敗確率</param>
/// <param name="reworkRate">リワーク確率</param>
/// <param name="costOverRate">コスト超過確率</param>
/// <returns></returns>
public static Activity Define(
string id = null,
string name = null,
decimal externalCost = 0m,
decimal income = 0m,
decimal fixTime = 0m,
decimal workLoad = 0m,
decimal failRate = 0m,
decimal reworkRate = 0m,
decimal costOverRate = 0m)
{
Contract.Requires(!id.IsNullOrEmpty());
Contract.Requires(!name.IsNullOrEmpty());
var activity = new Activity()
{
Id = id,
Name = name,
};
activity.Estimate(Cost.Of(externalCost));
activity.Estimate(Income.Of(income));
activity.Estimate(LeadTime.Of(fixTime));
activity.Estimate(WorkLoad.Of(workLoad));
activity.Estimate(Risk.Of(failRate: failRate, reworkRate: reworkRate, costOverRate: costOverRate));
return(activity);
}
public static Activity Activity(
decimal income = 0m,
decimal externalCost = 0m,
decimal failRate = 0m,
decimal reworkRate = 0m,
decimal costoverRate = 0m,
State state = State.ToDo,
decimal fixTime = 0m,
decimal workLoad = 0m,
decimal resourceQuantity = 0m,
decimal resourceProductivity = 0m
)
{
var activity = new Activity();
activity.Estimate(Income.Of(income));
activity.Estimate(Cost.Of(externalCost));
activity.Estimate(Risk.Of(failRate, reworkRate, costoverRate));
activity.Estimate(LeadTime.Of(fixTime));
activity.Estimate(WorkLoad.Of(workLoad));
if (resourceQuantity != 0m && resourceProductivity != 0m)
{
activity.Assign(new[] { Resource.Of(resourceQuantity, resourceProductivity) });
}
activity.Progress(state);
return(activity);
}
public void 見積後のアクティビティの作業量は与えられたものであるべき()
{
var expectedValue = 100m;
var activity = Activity.Define();
activity.Estimate(WorkLoad.Of(expectedValue));
activity.WorkLoad.Value.Is(expectedValue);
}
/// <summary>DRAGを求める</summary>
/// <returns>DRAG</returns>
/// <remarks>
/// アクティビティの所要時間をゼロにした場合の完了時間の変化
/// 非クリティカル・パスの場合はゼロ
/// クリティカル・パスの場合は並列アクティビティの有無で変化する
/// </remarks>
public LeadTime Drag()
{
if (Children.IsNullOrEmpty())
{
return(Duration());
}
var originalEndTime = Descendants.Where(d => d.Children.IsEmpty()).First().EarliestFinish().Value;
var originalFixTime = FixTime;
var originalWorkload = WorkLoad;
Estimate(LeadTime.Of());
Estimate(WorkLoad.Of());
var shortenedEndTime = Descendants.Where(d => d.Children.IsEmpty()).First().EarliestFinish().Value;
var drag = originalEndTime - shortenedEndTime;
Estimate(originalFixTime);
Estimate(originalWorkload);
return(LeadTime.Of(drag));
}