c# - 无法解析 CSDL

Question

我在 C# 中使用 CsdlReader 来解析 csdl。整个XML文件如下：

<Schema 
    xmlns=\"http://schemas.microsoft.com/ado/2008/09/edm\" 
    xmlns:edm_annotation=\"http://schemas.microsoft.com/ado/2009/02/edm/annotation\" 
    xmlns:bi=\"http://schemas.microsoft.com/sqlbi/2010/10/edm/extensions\" bi:Version=\"1.0\" Namespace=\"Sandbox\">
    <EntityContainer Name=\"Sandbox\">
        <EntitySet Name=\"CountryRegions\" EntityType=\"Sandbox.CountryRegions\">
            <bi:EntitySet />
        </EntitySet>
        <EntitySet Name=\"Editions\" EntityType=\"Sandbox.Editions\">
            <bi:EntitySet />
        </EntitySet>
        <EntitySet Name=\"Medals\" EntityType=\"Sandbox.Medals\">
            <bi:EntitySet />
        </EntitySet>
        <EntitySet Name=\"Medalists\" EntityType=\"Sandbox.Medalists\">
            <bi:EntitySet />
        </EntitySet>
        <EntitySet Name=\"MedalClasses\" EntityType=\"Sandbox.MedalClasses\">
            <bi:EntitySet Hidden=\"true\" />
        </EntitySet>
        <AssociationSet Name=\"Editions_CountryRegions_CountryRegions_Country_Region\" Association=\"Sandbox.Editions_CountryRegions_CountryRegions_Country_Region\">
            <End EntitySet=\"Editions\" />
            <End EntitySet=\"CountryRegions\" />
            <bi:AssociationSet State=\"Inactive\" />
        </AssociationSet>
        <AssociationSet Name=\"Medals_CountryRegions_CountryRegions_IOC_Code\" Association=\"Sandbox.Medals_CountryRegions_CountryRegions_IOC_Code\">
            <End EntitySet=\"Medals\" />
            <End EntitySet=\"CountryRegions\" />
            <bi:AssociationSet />
        </AssociationSet>
        <AssociationSet Name=\"Medals_Editions_Editions_Year\" Association=\"Sandbox.Medals_Editions_Editions_Year\">
            <End EntitySet=\"Medals\" />
            <End EntitySet=\"Editions\" />
            <bi:AssociationSet />
        </AssociationSet>
        <AssociationSet Name=\"Medals_MedalClasses_MedalClasses_Class\" Association=\"Sandbox.Medals_MedalClasses_MedalClasses_Class\">
            <End EntitySet=\"Medals\" />
            <End EntitySet=\"MedalClasses\" />
            <bi:AssociationSet />
        </AssociationSet>
        <AssociationSet Name=\"Medalists_Medals_Medals_Medal_ID\" Association=\"Sandbox.Medalists_Medals_Medals_Medal_ID\">
            <End EntitySet=\"Medalists\" />
            <End EntitySet=\"Medals\" />
            <bi:AssociationSet />
        </AssociationSet>
        <bi:EntityContainer Caption=\"IN_Olympics\" Culture=\"en-US\">
            <bi:CompareOptions IgnoreCase=\"true\" />
        </bi:EntityContainer>
    </EntityContainer>
    <EntityType Name=\"CountryRegions\">
        <Key>
            <PropertyRef Name=\"IOC_Code\" />
        </Key>
        <Property Name=\"RowNumber\" Type=\"Int64\" Nullable=\"false\">
            <bi:Property Hidden=\"true\" Contents=\"RowNumber\" Stability=\"RowNumber\" />
        </Property>
        <Property Name=\"Country_Region\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\" Nullable=\"false\">
            <bi:Property Caption=\"Country/Region\" ReferenceName=\"Country/Region\" Contents=\"Country\" />
        </Property>
        <Property Name=\"IOC_Code\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\" Nullable=\"false\">
            <bi:Property Caption=\"IOC Code\" Hidden=\"true\" ReferenceName=\"IOC Code\" GroupingBehavior=\"GroupOnEntityKey\" />
        </Property>
        <Property Name=\"ISO_Code\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"ISO Code\" Hidden=\"true\" ReferenceName=\"ISO Code\" />
        </Property>
        <Property Name=\"Residency\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property />
        </Property>
        <Property Name=\"Flag\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Contents=\"ImageUrl\" />
        </Property>
        <Property Name=\"Continent\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Contents=\"Continent\" />
        </Property>
        <Property Name=\"Heavyweight\" Type=\"Boolean\">
            <bi:Property FormatString=\"&quot;TRUE&quot;;&quot;TRUE&quot;;&quot;FALSE&quot;\" />
        </Property>
        <Property Name=\"medal_rank\" Type=\"Int64\">
            <bi:Measure Caption=\"medal rank\" ReferenceName=\"medal rank\" />
        </Property>
        <bi:EntityType>
            <bi:DisplayKey>
                <bi:MemberRef Name=\"Country_Region\" />
            </bi:DisplayKey>
            <bi:DefaultDetails>
                <bi:MemberRef Name=\"Flag\" />
                <bi:MemberRef Name=\"Country_Region\" />
            </bi:DefaultDetails>
            <bi:DefaultImage>
                <bi:MemberRef Name=\"Flag\" />
            </bi:DefaultImage>
        </bi:EntityType>
    </EntityType>
    <EntityType Name=\"Editions\">
        <Key>
            <PropertyRef Name=\"Year\" />
        </Key>
        <Property Name=\"RowNumber\" Type=\"Int64\" Nullable=\"false\">
            <bi:Property Hidden=\"true\" Contents=\"RowNumber\" Stability=\"RowNumber\" />
        </Property>
        <Property Name=\"Host_City\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Host City\" ReferenceName=\"Host City\" Contents=\"City\" />
        </Property>
        <Property Name=\"Year\" Type=\"Int64\" Nullable=\"false\">
            <bi:Property DefaultAggregateFunction=\"None\" GroupingBehavior=\"GroupOnEntityKey\" />
        </Property>
        <Property Name=\"Host_Country_Region\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Host Country/Region\" ReferenceName=\"Host Country/Region\" Contents=\"Country\" />
        </Property>
        <Property Name=\"Name\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property />
        </Property>
        <Property Name=\"Host_Continent\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Host Continent\" ReferenceName=\"Host Continent\" Contents=\"Continent\" />
        </Property>
        <Property Name=\"Olympic_Name\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Olympic Name\" ReferenceName=\"Olympic Name\" />
        </Property>
        <Property Name=\"Olympic_Full_Name\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Olympic Full Name\" ReferenceName=\"Olympic Full Name\" />
        </Property>
        <Property Name=\"Sum_of_Year\" Type=\"Int64\">
            <bi:Measure Caption=\"Sum of Year\" ReferenceName=\"Sum of Year\" IsSimpleMeasure=\"true\" />
        </Property>
        <NavigationProperty Name=\"CountryRegions_Country_Region\" Relationship=\"Sandbox.Editions_CountryRegions_CountryRegions_Country_Region\" FromRole=\"Editions_Host_Country_Region\" ToRole=\"CountryRegions_Country_Region\">
            <bi:NavigationProperty ReferenceName=\"CountryRegions_Country/Region\" />
        </NavigationProperty>
        <bi:EntityType>
            <bi:DisplayKey>
                <bi:MemberRef Name=\"Name\" />
            </bi:DisplayKey>
        </bi:EntityType>
    </EntityType>
    <EntityType Name=\"Medals\">
        <Key>
            <PropertyRef Name=\"Medal_ID\" />
        </Key>
        <Property Name=\"RowNumber\" Type=\"Int64\" Nullable=\"false\">
            <bi:Property Hidden=\"true\" Contents=\"RowNumber\" Stability=\"RowNumber\" />
        </Property>
        <Property Name=\"Medal_ID\" Type=\"Int64\" Nullable=\"false\">
            <bi:Property Caption=\"Medal ID\" Hidden=\"true\" ReferenceName=\"Medal ID\" GroupingBehavior=\"GroupOnEntityKey\" />
        </Property>
        <Property Name=\"Year\" Type=\"Double\">
            <bi:Property Hidden=\"true\" />
        </Property>
        <Property Name=\"Sport\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property />
        </Property>
        <Property Name=\"Discipline\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property />
        </Property>
        <Property Name=\"NOC\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Hidden=\"true\" />
        </Property>
        <Property Name=\"Event\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property />
        </Property>
        <Property Name=\"Event_Gender_raw\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Event Gender raw\" ReferenceName=\"Event Gender raw\" />
        </Property>
        <Property Name=\"Class\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property>
                <bi:OrderBy>
                    <bi:PropertyRef Name=\"Class_Rank\" />
                </bi:OrderBy>
            </bi:Property>
        </Property>
        <Property Name=\"Description\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property />
        </Property>
        <Property Name=\"Class_Rank\" Type=\"Int64\">
            <bi:Property Caption=\"Class Rank\" Hidden=\"true\" ReferenceName=\"Class Rank\" />
        </Property>
        <Property Name=\"Event_Gender\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Event Gender\" ReferenceName=\"Event Gender\" />
        </Property>
        <Property Name=\"Olympic_Year\" Type=\"Int64\">
            <bi:Property Caption=\"Olympic Year\" ReferenceName=\"Olympic Year\" DefaultAggregateFunction=\"None\" />
        </Property>
        <Property Name=\"Country_Region\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Country/Region\" ReferenceName=\"Country/Region\" Contents=\"Country\" />
        </Property>
        <Property Name=\"medal_growth__vs_previous_Olympics_\" Type=\"Double\">
            <bi:Measure Caption=\"medal growth (vs previous Olympics)\" ReferenceName=\"medal growth (vs previous Olympics)\" FormatString=\"0.0 %;-0.0 %;0.0 %\" />
        </Property>
        <Property Name=\"Cumulative_Medal_Count\" Type=\"Int64\">
            <bi:Measure Caption=\"Cumulative Medal Count\" ReferenceName=\"Cumulative Medal Count\" FormatString=\"#,0\" />
        </Property>
        <Property Name=\"Cumulative_Event_Count\" Type=\"Int64\">
            <bi:Measure Caption=\"Cumulative Event Count\" ReferenceName=\"Cumulative Event Count\" />
        </Property>
        <Property Name=\"Years_Since_First_Olympic_Win\" Type=\"Int64\">
            <bi:Measure Caption=\"Years Since First Olympic Win\" ReferenceName=\"Years Since First Olympic Win\" />
        </Property>
        <Property Name=\"Percent_of_Total_Medals_in_Sport\" Type=\"Double\">
            <bi:Measure Caption=\"Percent of Total Medals in Sport\" ReferenceName=\"Percent of Total Medals in Sport\" FormatString=\"0.00 %;-0.00 %;0.00 %\" />
        </Property>
        <Property Name=\"Medal_Weight\" Type=\"Double\">
            <bi:Measure Caption=\"Medal Weight\" ReferenceName=\"Medal Weight\" />
        </Property>
        <Property Name=\"Medal_Count\" Type=\"Int64\">
            <bi:Measure Caption=\"Medal Count\" ReferenceName=\"Medal Count\" FormatString=\"#,0\" />
        </Property>
        <NavigationProperty Name=\"CountryRegions_IOC_Code\" Relationship=\"Sandbox.Medals_CountryRegions_CountryRegions_IOC_Code\" FromRole=\"Medals_NOC\" ToRole=\"CountryRegions_IOC_Code\">
            <bi:NavigationProperty ReferenceName=\"CountryRegions_IOC Code\" />
        </NavigationProperty>
        <NavigationProperty Name=\"Editions_Year\" Relationship=\"Sandbox.Medals_Editions_Editions_Year\" FromRole=\"Medals_Year\" ToRole=\"Editions_Year\">
            <bi:NavigationProperty />
        </NavigationProperty>
        <NavigationProperty Name=\"MedalClasses_Class\" Relationship=\"Sandbox.Medals_MedalClasses_MedalClasses_Class\" FromRole=\"Medals_Class\" ToRole=\"MedalClasses_Class\">
            <bi:NavigationProperty />
        </NavigationProperty>
        <bi:EntityType>
            <bi:DisplayKey>
                <bi:MemberRef Name=\"Description\" />
            </bi:DisplayKey>
            <bi:DefaultDetails>
                <bi:MemberRef Name=\"Discipline\" />
                <bi:MemberRef Name=\"Event\" />
                <bi:MemberRef Name=\"Event_Gender\" />
                <bi:MemberRef Name=\"Year\" />
                <bi:MemberRef Name=\"Class\" />
                <bi:MemberRef Name=\"Olympic_Year\" />
                <bi:MemberRef Name=\"Country_Region\" />
            </bi:DefaultDetails>
        </bi:EntityType>
    </EntityType>
    <EntityType Name=\"Medalists\">
        <Key>
            <PropertyRef Name=\"Medalist_ID\" />
        </Key>
        <Property Name=\"RowNumber\" Type=\"Int64\" Nullable=\"false\">
            <bi:Property Hidden=\"true\" Contents=\"RowNumber\" Stability=\"RowNumber\" />
        </Property>
        <Property Name=\"Medalist_ID\" Type=\"Int64\" Nullable=\"false\">
            <bi:Property Caption=\"Medalist ID\" Hidden=\"true\" ReferenceName=\"Medalist ID\" />
        </Property>
        <Property Name=\"Medal_ID\" Type=\"Int64\">
            <bi:Property Caption=\"Medal ID\" Hidden=\"true\" ReferenceName=\"Medal ID\" />
        </Property>
        <Property Name=\"Athlete_Name_Sort_Order\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Athlete Name Sort Order\" Hidden=\"true\" ReferenceName=\"Athlete Name Sort Order\" />
        </Property>
        <Property Name=\"Athlete_Name\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Athlete Name\" ReferenceName=\"Athlete Name\" />
        </Property>
        <Property Name=\"Medal_Class\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Medal Class\" ReferenceName=\"Medal Class\" />
        </Property>
        <Property Name=\"Athlete_Full_Last_Name\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Athlete Full Last Name\" Hidden=\"true\" ReferenceName=\"Athlete Full Last Name\" />
        </Property>
        <Property Name=\"Athlete_Alias\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Athlete Alias\" ReferenceName=\"Athlete Alias\" />
        </Property>
        <Property Name=\"Athlete_Last_Name\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\">
            <bi:Property Caption=\"Athlete Last Name\" ReferenceName=\"Athlete Last Name\" />
        </Property>
        <Property Name=\"Sum_of_Medalist_ID\" Type=\"Int64\">
            <bi:Measure Caption=\"Sum of Medalist ID\" ReferenceName=\"Sum of Medalist ID\" IsSimpleMeasure=\"true\" />
        </Property>
        <Property Name=\"Count_of_Athlete_Name\" Type=\"Int64\">
            <bi:Measure Caption=\"Count of Athlete Name\" ReferenceName=\"Count of Athlete Name\" IsSimpleMeasure=\"true\" />
        </Property>
        <NavigationProperty Name=\"Medals_Medal_ID\" Relationship=\"Sandbox.Medalists_Medals_Medals_Medal_ID\" FromRole=\"Medalists_Medal_ID\" ToRole=\"Medals_Medal_ID\">
            <bi:NavigationProperty ReferenceName=\"Medals_Medal ID\" />
        </NavigationProperty>
        <bi:EntityType>
            <bi:DefaultDetails>
                <bi:MemberRef Name=\"Athlete_Name\" />
            </bi:DefaultDetails>
        </bi:EntityType>
    </EntityType>
    <EntityType Name=\"MedalClasses\">
        <Key>
            <PropertyRef Name=\"v__XL_RowNumber\" />
        </Key>
        <Property Name=\"Class\" Type=\"String\" MaxLength=\"Max\" Unicode=\"true\" FixedLength=\"false\" Nullable=\"false\">
            <bi:Property />
        </Property>
        <Property Name=\"Class_Rank\" Type=\"Int64\">
            <bi:Property Caption=\"Class Rank\" ReferenceName=\"Class Rank\" />
        </Property>
        <Property Name=\"v__XL_RowNumber\" Type=\"Int64\" Nullable=\"false\">
            <bi:Property Caption=\"__XL_RowNumber\" Hidden=\"true\" ReferenceName=\"__XL_RowNumber\" Contents=\"RowNumber\" Stability=\"RowNumber\" />
        </Property>
        <bi:EntityType />
    </EntityType>
    <Association Name=\"Editions_CountryRegions_CountryRegions_Country_Region\">
        <End Role=\"Editions_Host_Country_Region\" Type=\"Sandbox.Editions\" Multiplicity=\"*\" />
        <End Role=\"CountryRegions_Country_Region\" Type=\"Sandbox.CountryRegions\" Multiplicity=\"0..1\" />
    </Association>
    <Association Name=\"Medals_CountryRegions_CountryRegions_IOC_Code\">
        <End Role=\"Medals_NOC\" Type=\"Sandbox.Medals\" Multiplicity=\"*\" />
        <End Role=\"CountryRegions_IOC_Code\" Type=\"Sandbox.CountryRegions\" Multiplicity=\"0..1\" />
    </Association>
    <Association Name=\"Medals_Editions_Editions_Year\">
        <End Role=\"Medals_Year\" Type=\"Sandbox.Medals\" Multiplicity=\"*\" />
        <End Role=\"Editions_Year\" Type=\"Sandbox.Editions\" Multiplicity=\"0..1\" />
    </Association>
    <Association Name=\"Medals_MedalClasses_MedalClasses_Class\">
        <End Role=\"Medals_Class\" Type=\"Sandbox.Medals\" Multiplicity=\"*\" />
        <End Role=\"MedalClasses_Class\" Type=\"Sandbox.MedalClasses\" Multiplicity=\"0..1\" />
    </Association>
    <Association Name=\"Medalists_Medals_Medals_Medal_ID\">
        <End Role=\"Medalists_Medal_ID\" Type=\"Sandbox.Medalists\" Multiplicity=\"*\" />
        <End Role=\"Medals_Medal_ID\" Type=\"Sandbox.Medals\" Multiplicity=\"0..1\" />
    </Association>
</Schema>

这是我的代码：

CsdlReader.TryParse(schemaReaders, out edmModel, out edmErrors)

如你看到的。Role是 的一个属性End。但是，我似乎无法解析该 XML。我在 edmErrors 中有这样的错误：

{MissingAttribute：元素“End”上不存在必需的架构属性“Role”。: (0, 0)}

该消息告诉我Role丢失了，但我的csdl中确实有它。

Answer 1

EndAssociationSet实体容器中的元素Sandbox确实缺少Role属性：

<AssociationSet Name=\"Editions_CountryRegions_CountryRegions_Country_Region\" Association=\"Sandbox.Editions_CountryRegions_CountryRegions_Country_Region\">
    <End EntitySet=\"Editions\" />
    <End EntitySet=\"CountryRegions\" />
    <bi:AssociationSet State=\"Inactive\" />
</AssociationSet>

这是解析错误的根本原因。

Answer 2

它取决于 OData 版本。旧版本生成没有 Role 的 AssociationSet，新版本的 CsdlReader 期望 Role 存在。当前是 4.0（参见http://www.odata.org/documentation/）。

您可以通过查看程序集的属性来查看 CSDL 的版本。如果您使用 GetSchemaDataSet 获得了 XML，那么您可以在 RestrictionList 参数中请求正确的版本。这仅在 XMLA 中显示，但参数是相同的。（https://docs.microsoft.com/en-us/sql/analysis-services/schema-rowsets/xml/discover-csdl-metadata-rowset）