Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/1556#discussion_r51125883
--- Diff:
flink-libraries/flink-table/src/main/java/org/apache/flink/api/table/sql/calcite/flinkFunction/ProjectFunction.java
---
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.flink.api.table.sql.calcite.flinkFunction;
+
+import org.apache.flink.api.common.functions.RichMapFunction;
+import org.apache.flink.api.table.Row;
+import org.apache.flink.api.table.expressions.Expression;
+import org.apache.flink.api.table.expressions.Naming;
+import org.apache.flink.api.table.typeinfo.RowTypeInfo;
+
+import java.util.List;
+
+public class ProjectFunction extends RichMapFunction<Row, Row> {
+
+ private RowTypeInfo outputType;
+ private List<Naming> expressions;
+
+ public ProjectFunction(RowTypeInfo outputType, List<Naming>
expressions) {
--- End diff --
We already had the discussion that TypeInfo should not be shipped to the
cluster. We need to generate the `Function`s too, so that map() will work on
the indexes of the row directly without name information.
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