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https://issues.apache.org/jira/browse/FLINK-7206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16105187#comment-16105187
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ASF GitHub Bot commented on FLINK-7206:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4355#discussion_r130059458
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/dataview/HeapViewFactory.scala
---
@@ -0,0 +1,88 @@
+/*
+ * 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.dataview
+
+import java.lang.{Iterable => JIterable}
+import java.util
+
+import org.apache.flink.api.common.state.{ListStateDescriptor,
MapStateDescriptor, StateDescriptor}
+import org.apache.flink.table.api.dataview.{ListView, MapView}
+
+/**
+ * Heap view factory to create [[HeapListView]] or [[HeapMapView]].
+ *
+ */
+class HeapViewFactory() extends DataViewFactory() {
+
+ override protected def createListView[T](id: String): ListView[T] = new
HeapListView[T]
+
+ override protected def createMapView[K, V](id: String): MapView[K, V] =
new HeapMapView[K, V]
+}
+
+class HeapListView[T] extends ListView[T] {
--- End diff --
Could this be the default implementation of `ListView`?
> Implementation of DataView to support state access for UDAGG
> ------------------------------------------------------------
>
> Key: FLINK-7206
> URL: https://issues.apache.org/jira/browse/FLINK-7206
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Kaibo Zhou
> Assignee: Kaibo Zhou
>
> Implementation of MapView and ListView to support state access for UDAGG.
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