Github user wuchong commented on a diff in the pull request:
https://github.com/apache/flink/pull/3039#discussion_r93763491
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/sources/TableSource.scala
---
@@ -19,21 +19,32 @@
package org.apache.flink.table.sources
import org.apache.flink.api.common.typeinfo.TypeInformation
+import org.apache.flink.table.api.TableEnvironment
-/** Defines an external table by providing schema information, i.e., field
names and types.
+/** Defines an external table by providing schema information and used to
produce a
+ * [[org.apache.flink.api.scala.DataSet]] or
[[org.apache.flink.streaming.api.scala.DataStream]].
+ * Schema information consists of a data type, field names, and
corresponding indices of
+ * these names in the data type.
+ *
+ * To define a TableSource one need to implement
[[TableSource.getReturnType]]. In this case
--- End diff --
I'm not sure about that. My IDEA highlight `[[TableSource.getReturnType]]`
error but `[[TableSource#getReturnType]]` is fine.
IDEA 2016.3.1, Scala plugin 2016.3.5
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