Cassandra中的复合列值？ [英] Composite Column Values in Cassandra?

问题描述

我们可以在Cassandra Column Family的每一列中有一个复合值吗？

Can we have a composite values in each columns in Cassandra Column Family?

user-id   column1-name
123      (Column1-Value  Column1-SchemaName  Column1-LastModifiedDate)

userId是rowKey。

userId is the rowKey here. And same thing will be for other columns as well.

每个列值将包含以下三个常量：

Each column value will contain below three things always-

ByteType for Column-Value

UTF8Type for Column-SchemaName

DateType for LastModifiedDate

如果是，任何人都可以帮助我设计列族？我将使用Astyanax客户端插入上面的列族。

If yes, can anyone help me in designing the column family for this? I will be using Astyanax client to insert into above column family.

推荐答案

我不认为， Cassandra。您必须对列族进行反标准化或查看 Cassandra Collection 支持。如果您可以将值，模式名， LastModifiedDate 的数据模型数据类型限制为单一类型，则可能映射将有助于您的情况。

I don't think, it is at all possible in Cassandra. Either you have to de-normalized your Column Family or look after Cassandra Collection support. If you can restrict your data models data type for Value, SchemaName, LastModifiedDate to a single type, then probably Map will be helpful in your case.

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