KPI 用于根据目标值度量由基础度量值定义的值的性能。
关键绩效指标表示形式
在表格对象模型中，关键绩效指标 KPI 是一个度量值，该值带有可在客户端应用程序中以图形方式显示的附加信息。 KPI 通常包含关于要实现的目标和度量值相对于目标的状态的信息，以及客户端工具如何以图形方式显示状态的信息。
AMO 中的关键绩效指标
在使用 AMO 管理表格模型 KPI 时，对于 AMO 中的 KPI 没有一对一的对象匹配；AMO Kpi 对象不用于此目的；在 AMO 中，对于表格模型，KPI 表示为在 Commands 集合和 CalculationProperties 中的元素之一中创建的一系列对象。
下面的代码段演示如何创建众多可能的 KPI 定义之一。
private void addStaticKPI(object sender, EventArgs e)
{
double KPIGoal = 0, status1ThresholdValue = 0, status2ThresholdValue = 0
, redAreaValue = 0, yellowAreaValue = 0, greenAreaValue = 0;
string clientStatusGraphicImageName = "Three Circles Colored";
//Verify input requirements
//Goal values
if (staticTargetKPI.Checked)
{//Static KPI Goal selected
if (string.IsNullOrEmpty(staticTargetKPIGoal.Text)
|| string.IsNullOrWhiteSpace(staticTargetKPIGoal.Text)
|| !double.TryParse(staticTargetKPIGoal.Text, out KPIGoal))
{
MessageBox.Show(String.Format("Static Goal is not defined or is not a valid number."), "AMO to Tabular message", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
else
{//Measure KPI Goal selected
if (!TargetMeasureForKPISelected)
{
MessageBox.Show(String.Format("Measure Goal is not selected."), "AMO to Tabular message", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
//Status
if (string.IsNullOrEmpty(firstStatusThresholdValue.Text)
|| string.IsNullOrWhiteSpace(firstStatusThresholdValue.Text)
|| !double.TryParse(firstStatusThresholdValue.Text, out status1ThresholdValue)
|| string.IsNullOrEmpty(secondStatusThresholdValue.Text)
|| string.IsNullOrWhiteSpace(secondStatusThresholdValue.Text)
|| !double.TryParse(secondStatusThresholdValue.Text, out status2ThresholdValue))
{
MessageBox.Show(String.Format("Status Threshold are not defined or they are not a valid number."), "AMO to Tabular message", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (string.IsNullOrEmpty(statusValueRedArea.Text)
|| string.IsNullOrWhiteSpace(statusValueRedArea.Text)
|| !double.TryParse(statusValueRedArea.Text, out redAreaValue)
|| string.IsNullOrEmpty(statusValueYellowArea.Text)
|| string.IsNullOrWhiteSpace(statusValueYellowArea.Text)
|| !double.TryParse(statusValueYellowArea.Text, out yellowAreaValue)
|| string.IsNullOrEmpty(statusValueGreenArea.Text)
|| string.IsNullOrWhiteSpace(statusValueGreenArea.Text)
|| !double.TryParse(statusValueGreenArea.Text, out greenAreaValue))
{
MessageBox.Show(String.Format("Status Area values are not defined or they are not a valid number."), "AMO to Tabular message", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//Set working variables
string kpiTableName = ((DataRowView)MeasuresInModelList.CheckedItems[0])[0].ToString();
string kpiMeasureName = ((DataRowView)MeasuresInModelList.CheckedItems[0])[1].ToString();
//Verify if KPI is already defined
if (modelCube.MdxScripts["MdxScript"].CalculationProperties.Contains(string.Format("KPIs.[{0}]", kpiMeasureName)))
{
//ToDo: Verify with the user if wants to update KPI or exit
//If user wants to update then remove KPI from mdxScripts and continue with the creating the KPI
//
// Until the code to remove KPI is finished we'll have to exit with a message of no duplicated KPIs are allowed
MessageBox.Show(String.Format("Another KPI exists for the same measeure."), "AMO to Tabular message", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
StringBuilder kpiCommand = new StringBuilder();
AMO.MdxScript mdxScript = modelCube.MdxScripts["MdxScript"];
kpiCommand.Append(mdxScript.Commands[1].Text);
string goalExpression;
if (staticTargetKPI.Checked)
{//Static KPI Goal selected
goalExpression = KPIGoal.ToString();
}
else
{//Measure KPI Goal selected
string measureGoalMeasureName = ((DataRowView)KpiTargetMeasures.CheckedItems[0])[1].ToString();
goalExpression = string.Format("[Measures].[{0}]", measureGoalMeasureName);
}
kpiCommand.AppendLine(string.Format("CREATE MEMBER CURRENTCUBE.Measures.[_{1} Goal] AS '{2}', ASSOCIATED_MEASURE_GROUP = '{0}';"
, kpiTableName, kpiMeasureName, goalExpression));
string statusExpression;
if (staticTargetKPI.Checked)
{//Static KPI Goal selected
statusExpression = string.Format("KpiValue(\"{0}\")", kpiMeasureName).Trim();
}
else
{//Measure KPI Goal selected
string measureGoalMeasureName = ((DataRowView)KpiTargetMeasures.CheckedItems[0])[1].ToString().Trim();
string M = string.Format("[Measures].[{0}]", kpiMeasureName);
string T = string.Format("[Measures].[{0}]", measureGoalMeasureName);
if (KpiRelationDifference.Checked)
{
statusExpression = string.Format("{1} - {0}", M, T);
}
else
{
if (KpiRelationRatioMT.Checked)
{
statusExpression = string.Format("{0} / {1}", M, T);
}
else
{
statusExpression = string.Format("{1} / {0}", M, T);
}
}
}
kpiCommand.AppendLine(string.Format("CREATE MEMBER CURRENTCUBE.Measures.[_{1} Status] "
+ " AS 'Case When IsEmpty({9}) Then Null "
+ " When ({9}) {2} {3} Then {4} "
+ " When ({9}) {5} {6} Then {7} "
+ " Else {8} End'"
+ ", ASSOCIATED_MEASURE_GROUP = '{0}';"
, kpiTableName, kpiMeasureName // 0, 1
, statusThreshold1ComparisonOperator.Text, status1ThresholdValue, redAreaValue // 2, 3, 4
, statusThreshold2ComparisonOperator.Text, status2ThresholdValue, yellowAreaValue, greenAreaValue // 5, 6, 7, 8
, statusExpression // 9
));
kpiCommand.AppendLine(string.Format("CREATE MEMBER CURRENTCUBE.Measures.[_{1} Trend] AS '0', ASSOCIATED_MEASURE_GROUP = '{0}';"
, kpiTableName, kpiMeasureName));
kpiCommand.AppendLine(string.Format("CREATE KPI CURRENTCUBE.[{1}] AS Measures.[{1}]"
+ ", ASSOCIATED_MEASURE_GROUP = '{0}'"
+ ", GOAL = Measures.[_{1} Goal]"
+ ", STATUS = Measures.[_{1} Status]"
+ ", TREND = Measures.[_{1} Trend]"
+ ", STATUS_GRAPHIC = '{2}'"
+ ", TREND_GRAPHIC = '{2}';"
, kpiTableName, kpiMeasureName, clientStatusGraphicImageName));
{//Adding Calculation Reference for the Measure itself
if (!mdxScript.CalculationProperties.Contains(kpiMeasureName))
{
AMO.CalculationProperty cp = new AMO.CalculationProperty(kpiMeasureName, AMO.CalculationType.Member);
cp.FormatString = ""; // ToDo: Get formatting attributes for the member
cp.Visible = true;
mdxScript.CalculationProperties.Add(cp);
}
}
{//Adding Calculation Reference for the Goal measure
AMO.CalculationProperty cp = new AMO.CalculationProperty(string.Format("Measures.[_{0} Goal]", kpiMeasureName), AMO.CalculationType.Member);
cp.FormatString = ""; // ToDo: Get formatting attributes for the member
cp.Visible = false;
mdxScript.CalculationProperties.Add(cp);
}
{//Adding Calculation Reference for the Status measure
AMO.CalculationProperty cp = new AMO.CalculationProperty(string.Format("Measures.[_{0} Status]", kpiMeasureName), AMO.CalculationType.Member);
cp.FormatString = ""; // ToDo: Get formatting attributes for the member
cp.Visible = false;
mdxScript.CalculationProperties.Add(cp);
}
{//Adding Calculation Reference for the Status measure
AMO.CalculationProperty cp = new AMO.CalculationProperty(string.Format("Measures.[_{0} Trend]", kpiMeasureName), AMO.CalculationType.Member);
cp.FormatString = ""; // ToDo: Get formatting attributes for the member
cp.Visible = false;
mdxScript.CalculationProperties.Add(cp);
}
{//Adding Calculation Reference for the KPI
AMO.CalculationProperty cp = new AMO.CalculationProperty(string.Format("KPIs.[{0}]", kpiMeasureName), AMO.CalculationType.Member);
cp.FormatString = ""; // ToDo: Get formatting attributes for the member
cp.Visible = true;
mdxScript.CalculationProperties.Add(cp);
}
try
{
newDatabase.Update(AMO.UpdateOptions.ExpandFull, AMO.UpdateMode.UpdateOrCreate);
MessageBox.Show(String.Format("KPI successfully defined."), "AMO to Tabular message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (AMO.OperationException amoOperationException)
{
//ToDo: remove anything left in mdxScript up to the point where the exception was thrown
MessageBox.Show(String.Format("Error creating KPI for Measure '{0}'[{1}]\nError message: {2}", kpiTableName, kpiMeasureName, amoOperationException.Message), "AMO to Tabular message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
AMO2Tabular 示例
为了理解如何使用 AMO 创建和操作关键绩效指标表示形式，请参阅 AMO 到表格示例中的源代码；具体来讲，请查看以下源文件：AddKPIs.cs。 该示例在 Codeplex 上提供。 有关该代码的重要说明：提供该代码只是为了支持本文介绍的逻辑概念，不应用于生产环境中；也不应用于除教学之外的其他用途。