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https://issues.apache.org/jira/browse/FLINK-2170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16262546#comment-16262546
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ASF GitHub Bot commented on FLINK-2170:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/5043#discussion_r152571674
--- Diff:
flink-core/src/main/java/org/apache/flink/api/java/typeutils/RowTypeInfo.java
---
@@ -355,4 +355,21 @@ public void addComparatorField(int fieldId,
TypeComparator<?> comparator) {
comparatorOrders);
}
}
+
+ /**
+ * Creates a {@link RowTypeInfo} with projected fields.
+ *
+ * @param rowType The original RowTypeInfo whose fields are projected
+ * @param fieldMapping The field mapping of the projection
+ * @return A RowTypeInfo with projected fields.
+ */
+ public static RowTypeInfo projectFields(RowTypeInfo rowType, int[]
fieldMapping) {
--- End diff --
I think it is cleaner to have this as a static method than an instance
method.
A static method makes it explicit that this creates a new (immutable)
`RowTypeInfo`.
> Add OrcTableSource
> ------------------
>
> Key: FLINK-2170
> URL: https://issues.apache.org/jira/browse/FLINK-2170
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Affects Versions: 0.9
> Reporter: Fabian Hueske
> Assignee: Usman Younas
> Priority: Minor
> Labels: starter
>
> Add a {{OrcTableSource}} to read data from an ORC file. The
> {{OrcTableSource}} should implement the {{ProjectableTableSource}}
> (FLINK-3848) and {{FilterableTableSource}} (FLINK-3849) interfaces.
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