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From GitBox <...@apache.org>
Subject [GitHub] twalthr commented on a change in pull request #6299: [FLINK-9713][table][sql] Support processing time versioned joins
Date Wed, 08 Aug 2018 11:29:51 GMT
twalthr commented on a change in pull request #6299: [FLINK-9713][table][sql] Support processing
time versioned joins
URL: https://github.com/apache/flink/pull/6299#discussion_r208512822
 
 

 ##########
 File path: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/TableVersionFunction.scala
 ##########
 @@ -0,0 +1,70 @@
+/*
+ * 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.table.functions
+
+import java.sql.Timestamp
+
+import org.apache.flink.api.common.typeinfo.TypeInformation
+import org.apache.flink.api.java.typeutils.RowTypeInfo
+import org.apache.flink.table.api.Table
+import org.apache.flink.types.Row
+
+/**
+  * Class represnting table version functions over some history table.
+  */
+class TableVersionFunction private(
+    @transient private val _table: Table,
 
 Review comment:
   `_` has so many meanings in Scala. We should not use it in variable names.

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