透视表示形式（表格）

透视是一种机制，用于针对客户端应用程序简化模型或将模型的侧重点置于其某个较小部分。

有关如何创建和操作 透视表示形式的 详细说明，请参阅透视表示 (表格) 。

透视表示形式

就 AMO 对象而言，透视表示形式与 Perspective 之间存在一对一映射关系，并且不需要任何其他主要 AMO 对象。

AMO 中的透视

下面的代码段演示如何在表格模型中创建透视。 此代码段中的关键元素是 perspectiveElements；此对象是表格模型中向用户公开的所有对象的图形化表示形式。 perspectiveElements 包含 4 列，对于此方案，只有列 1、2 和 3 相关。 第 1 列包含显示的元素的类型 - elementTypeValue；第 2 列包含元素的完整名称 --（可能需要进行分析以在透视中输入该元素）；第 3 列包含一个复选框项 - checkedElement，该项说明元素是否为透视的一部分。

  
private void updatePerspective_Click(  
                     AMO.Cube modelCube  
                  ,  DataGridView perspectiveElements  
                  ,  string updatedPerspectiveID  
             )  
{  
    //Update is done by delete first, create new and insert after  
    //if perspective doesn't exist then create first and insert after  
    updatedPerspectiveID = updatedPerspectiveID.Trim();  
    if (modelCube.Perspectives.Contains(updatedPerspectiveID))  
    {  
        modelCube.Perspectives.Remove(updatedPerspectiveID, true);  
        newDatabase.Update(AMO.UpdateOptions.ExpandFull, AMO.UpdateMode.UpdateOrCreate);  
    }  
    AMO.Perspective currentPerspective = modelCube.Perspectives.Add(updatedPerspectiveID, updatedPerspectiveID);  
  
    foreach (DataGridViewRow currentDGVRow in perspectiveElements.Rows)  
    {  
        bool checkedElement = (bool)currentDGVRow.Cells[3].Value;  
        if (checkedElement)  
        {  
            string elementTypeValue = currentDGVRow.Cells[1].Value.ToString();  
            string elementNameValue = currentDGVRow.Cells[2].Value.ToString();  
            switch (elementTypeValue)  
            {  
                case "Column: Attribute":  
                case "Column: Calculated Column":  
                    {  
                        string perspectiveDimensionName = Regex.Match(elementNameValue, @"(?<=')(.*?)(?=')").ToString();  
                        string perspectiveDimensionAttributeName = Regex.Match(elementNameValue, @"(?<=\[)(.*?)(?=\])").ToString();  
                        AMO.PerspectiveDimension currentPerspectiveDimension;  
                        if (!currentPerspective.Dimensions.Contains(perspectiveDimensionName))  
                        {  
                            currentPerspectiveDimension = currentPerspective.Dimensions.Add(perspectiveDimensionName);  
                        }  
                        else  
                        {  
                            currentPerspectiveDimension = currentPerspective.Dimensions[perspectiveDimensionName];  
                        }  
                        if (!currentPerspectiveDimension.Attributes.Contains(perspectiveDimensionAttributeName))  
                        {  
                            currentPerspectiveDimension.Attributes.Add(perspectiveDimensionAttributeName);  
                        }  
                    }  
                    break;  
                case "Hierarchy":  
                    {  
                        string perspectiveDimensionName = Regex.Match(elementNameValue, @"(?<=')(.*?)(?=')").ToString();  
                        string perspectiveDimensionHierarchyName = Regex.Match(elementNameValue, @"(?<=\[)(.*?)(?=\])").ToString();  
                        AMO.PerspectiveDimension currentPerspectiveDimension;  
                        if (!currentPerspective.Dimensions.Contains(perspectiveDimensionName))  
                        {  
                            currentPerspectiveDimension = currentPerspective.Dimensions.Add(perspectiveDimensionName);  
                        }  
                        else  
                        {  
                            currentPerspectiveDimension = currentPerspective.Dimensions[perspectiveDimensionName];  
                        }  
                        if (!currentPerspectiveDimension.Hierarchies.Contains(perspectiveDimensionHierarchyName))  
                        {  
                            currentPerspectiveDimension.Hierarchies.Add(perspectiveDimensionHierarchyName);  
                        }  
                    }  
                    break;  
                case "Measure":  
                    {  
                        string perspectiveMeasureGroupName = Regex.Match(elementNameValue, @"(?<=')(.*?)(?=')").ToString();  
                        string measureName = Regex.Match(elementNameValue, @"(?<=\[)(.*?)(?=\])").ToString();  
                        string perspectiveMeasureName = string.Format("[Measures].[{0}]", measureName);  
                        AMO.PerspectiveCalculation currentPerspectiveCalculation = new AMO.PerspectiveCalculation(perspectiveMeasureName, AMO.PerspectiveCalculationType.Member);  
                        if (!currentPerspective.Calculations.Contains(perspectiveMeasureName))  
                        {  
                            currentPerspective.Calculations.Add(currentPerspectiveCalculation);  
                        }  
                        if (modelCube.MdxScripts["MdxScript"].CalculationProperties.Contains(string.Format("KPIs.[{0}]", measureName)))  
                        {//Current Measure is also a KPI ==> will be added to the KPIs collection of the perspective  
                            AMO.PerspectiveKpi currentPerspectiveKpi = new AMO.PerspectiveKpi(perspectiveMeasureName);  
                            if (!currentPerspective.Kpis.Contains(perspectiveMeasureName))  
                            {  
                                currentPerspective.Kpis.Add(currentPerspectiveKpi);  
                            }  
                        }  
                    }  
                    break;  
                default:  
                    break;  
            }  
        }  
    }  
  
    newDatabase.Update(AMO.UpdateOptions.ExpandFull, AMO.UpdateMode.CreateOrReplace);  
    MessageBox.Show(String.Format("Perpective successfully updated."), "AMO to Tabular message", MessageBoxButtons.OK, MessageBoxIcon.Information);  
}  
  

AMO2Tabular 示例

不过，若要了解如何使用 AMO 创建和操作透视表示形式，请参阅“AMO 到表格”示例中的源代码。 该示例位于 Codeplex。 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。