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https://issues.apache.org/jira/browse/FLINK-5280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15772769#comment-15772769
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ASF GitHub Bot commented on FLINK-5280:
---------------------------------------
Github user wuchong commented on a diff in the pull request:
https://github.com/apache/flink/pull/3039#discussion_r93759055
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/schema/TableSourceTable.scala
---
@@ -25,6 +25,6 @@ import org.apache.flink.types.Row
/** Table which defines an external table via a [[TableSource]] */
class TableSourceTable(val tableSource: TableSource[_])
extends FlinkTable[Row](
--- End diff --
I think it's not necessary to declare the return type is `Row`.
`TableSource` could return Pojo in the future.
So it should be declared like `DataSetTable` and `DataStreamTable`, such
as:
```scala
class TableSourceTable[T](val tableSource: TableSource[T])
extends FlinkTable[T](
```
> Extend TableSource to support nested data
> -----------------------------------------
>
> Key: FLINK-5280
> URL: https://issues.apache.org/jira/browse/FLINK-5280
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Affects Versions: 1.2.0
> Reporter: Fabian Hueske
> Assignee: Ivan Mushketyk
>
> The {{TableSource}} interface does currently only support the definition of
> flat rows.
> However, there are several storage formats for nested data that should be
> supported such as Avro, Json, Parquet, and Orc. The Table API and SQL can
> also natively handle nested rows.
> The {{TableSource}} interface and the code to register table sources in
> Calcite's schema need to be extended to support nested data.
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