我正在使用一个简单的模式运行Saiku Community Edition 3.0:3个共享维度和两个这样的立方体：

<?xml version="1.0"?>
<Schema name="Schema1" metamodelVersion='4.0'>
    <PhysicalSchema>
        <Table name='dim_date' />
        <Table name='dim_time2' />
        <Table name='dim_user' />
        <Table name='fact_action' />
        <Table name='fact_feedback' />
    </PhysicalSchema>

    <Dimension name='Date' table='dim_date' key='Date Id' type='TIME'>...</Dimension>
    <Dimension name='Time' table='dim_time2' key='Time Id' type='TIME'>...</Dimension>
    <Dimension name='User' table='dim_user' key='User Id'>...</Dimension>

    <Cube name='Actions'>
        <Dimensions>
            <Dimension source='Date' />
            <Dimension source='Time' />
            <Dimension source='User' name='User1' />
            <Dimension source='User' name='User2' />
            <Dimension source='Comment' />
        </Dimensions>

        <CalculatedMembers>
            <CalculatedMember name='Action count' dimension='Measures' formula='Measures.[Type1 action count] + Measures.[Type2 action count] + Measures.[Type3 action count]' aggregator='sum'>
                <CalculatedMemberProperty name='FORMAT_STRING' value='#,###'/>
                <CalculatedMemberProperty name='DATATYPE' value='Integer' />
            </CalculatedMember>
        </CalculatedMembers>

        <MeasureGroups>
            <MeasureGroup name='Actions' table='fact_action'>
                <Measures>
                    <Measure name='Type1 action count' column='action_type1' aggregator='sum' formatString='#,###' />
                    <Measure name='Type2 action count' column='action_type2' aggregator='sum' formatString='#,###' />
                    <Measure name='Type3 action count' column='action_type3' aggregator='sum' formatString='#,###' />
                </Measures>
                <DimensionLinks>
                    <ForeignKeyLink dimension='Date' foreignKeyColumn='date_tk' />
                    <ForeignKeyLink dimension='Time' foreignKeyColumn='time2_tk' />
                    <ForeignKeyLink dimension='User1' foreignKeyColumn='user1_tk' />
                    <ForeignKeyLink dimension='User2' foreignKeyColumn='user2_tk' />
                </DimensionLinks>
            </MeasureGroup>
        </MeasureGroups>
    </Cube>

    <Cube name='Feedback'>
        <Dimensions>
            <Dimension source='Date' />
            <Dimension source='Time' />
            <Dimension source='User' name='User1' />
            <Dimension source='User' name='User2' />
        </Dimensions>

        <CalculatedMembers>
            <CalculatedMember name='Feedback count' dimension='Measures' formula='Measures.[Type1 feedback count] + Measures.[Type2 feedback count] + Measures.[Type3 feedback count] + Measures.[Type4 feedback count]' aggregator='sum'>
                <CalculatedMemberProperty name='FORMAT_STRING' value='#,###'/>
                <CalculatedMemberProperty name='DATATYPE' value='Integer' />
            </CalculatedMember>
        </CalculatedMembers>

        <MeasureGroups>
            <MeasureGroup name='Feedback' table='fact_feedback'>
                <Measures>
                    <Measure name='Type1 feedback count' column='type1_count' aggregator='sum' formatString='#,###' />
                    <Measure name='Type2 feedback count' column='type2_count' aggregator='sum' formatString='#,###' />
                    <Measure name='Type3 feedback count' column='type3_count' aggregator='sum' formatString='#,###' />
                    <Measure name='Type4 feedback count' column='type4_count' aggregator='sum' formatString='#,###' />
                </Measures>
                <DimensionLinks>
                    <ForeignKeyLink dimension='Date' foreignKeyColumn='date_tk' />
                    <ForeignKeyLink dimension='Time' foreignKeyColumn='time2_tk' />
                    <ForeignKeyLink dimension='User1' foreignKeyColumn='user1_tk' />
                    <ForeignKeyLink dimension='User2' foreignKeyColumn='user2_tk' />
                </DimensionLinks>
            </MeasureGroup>
        </MeasureGroups>
    </Cube>
</Schema>

这很好。我在赛库中看到了两个立方体，它们按预期工作。现在我需要第三个虚拟立方体，它结合了上面两个的指标。我尝试了许多不同的方法，但我没有在赛库中看到虚拟立方体。奇怪的是，通常当你上传语法错误的模式时，你不会看到其中的任何立方体。但我仍然看到上面定义的两个立方体，但不是第三个虚拟立方体。

我尝试像下面这样定义它，就在关闭之前

<VirtualCube name="Performance" enabled="true">
    <CubeUsages>
        <CubeUsage cubeName="Actions" />
        <CubeUsage cubeName="Feedback" />
    </CubeUsages>
    <VirtualCubeDimension name="Date" />
    <VirtualCubeMeasure cubeName="Feedback" name="[Measures].[Type1 feedback count]" visible="true" />
    <VirtualCubeMeasure cubeName="Actions" name="[Measures].[Type1 action count]" visible="true" />
    <CalculatedMember name="Feedback per Actions" formula="[Measures].[Type1 feedback count] / [Measures].[Type1 action count]" dimension="Measures">
    </CalculatedMember>
</VirtualCube>

虚拟立方体在Saiku中不可见，我做错了什么？