Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/6201#discussion_r198160808
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/schema/TableSourceSinkTable.scala
---
@@ -0,0 +1,43 @@
+/*
+ * 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.plan.schema
+
+import org.apache.calcite.rel.`type`.{RelDataType, RelDataTypeFactory}
+import org.apache.calcite.schema.Statistic
+import org.apache.calcite.schema.impl.AbstractTable
+
+class TableSourceSinkTable[T1, T2](val tableSourceTableOpt:
Option[TableSourceTable[T1]],
--- End diff --
Call this `ExternalTable` or `ConnectorTable`?
Maybe we can add more helper methods here like `hasSource()`, `getSource`
in order to reduce the many pattern matching changes in this PR.
I'm also wondering if we need the separate classes `TableSinkTable` and
`TableSourceTable` anymore. We could store `TableSink` and `TableSource`
directly in `UnifiedTable`
---
