sunjincheng121 commented on a change in pull request #7196: [FLINK-10974]
[table] Add support for flatMap to table API
URL: https://github.com/apache/flink/pull/7196#discussion_r239271885
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/table.scala
##########
@@ -999,6 +1001,131 @@ class Table(
new OverWindowedTable(this, overWindows.toArray)
}
+ /**
+ * Performs a flatMap operation with an user-defined table function.
+ *
+ * Scala Example:
+ * {{{
+ * class MyFlatMapFunction extends TableFunction[Row] {
+ * def eval(str : String) {
+ * if (str.contains("#")) {
+ * val splits = str.split("#")
+ * collect(Row.of(splits(0), splits(1)))
+ * }
+ * }
+ *
+ * def getResultType(signature: Array[Class[_]]): TypeInformation[_] =
+ * Types.ROW(Types.STRING, Types.STRING)
+ * }
+ *
+ * val func = new MyFlatMapFunction()
Review comment:
`MyFlatMapFunction()`->`MyFlatMapFunction`
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