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https://issues.apache.org/jira/browse/FLINK-6094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16121733#comment-16121733
]
ASF GitHub Bot commented on FLINK-6094:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4471#discussion_r132303211
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/stream/table/validation/JoinValidationTest.scala
---
@@ -0,0 +1,112 @@
+/*
+ * 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.api.stream.table.validation
+
+import org.apache.flink.api.scala._
+import org.apache.flink.streaming.api.scala.StreamExecutionEnvironment
+import org.apache.flink.table.api.{TableEnvironment, TableException,
ValidationException}
+import org.apache.flink.table.api.scala._
+import org.apache.flink.table.runtime.utils.StreamTestData
+import org.apache.flink.table.utils.TableTestBase
+import org.apache.flink.types.Row
+import org.junit.Test
+
+class JoinValidationTest extends TableTestBase {
+
+ private val util = streamTestUtil()
+ private val ds1 = util.addTable[(Int, Long, String)]("Table3",'a, 'b, 'c)
+ private val ds2 = util.addTable[(Int, Long, Int, String,
Long)]("Table5", 'd, 'e, 'f, 'g, 'h)
+
+ @Test(expected = classOf[ValidationException])
+ def testJoinNonExistingKey(): Unit = {
+ ds1.join(ds2)
+ // must fail. Field 'foo does not exist
+ .where('foo === 'e)
+ .select('c, 'g)
+ }
+
+ @Test(expected = classOf[ValidationException])
+ def testJoinWithNonMatchingKeyTypes(): Unit = {
+ ds1.join(ds2)
+ // must fail. Field 'a is Int, and 'g is String
+ .where('a === 'g)
+ .select('c, 'g)
+ }
+
+
+ @Test(expected = classOf[ValidationException])
+ def testJoinWithAmbiguousFields(): Unit = {
+ ds1.join(ds2.select('d, 'e, 'f, 'g, 'h as 'c))
+ // must fail. Both inputs share the same field 'c
+ .where('a === 'd)
+ .select('c, 'g)
+ }
+
+ @Test(expected = classOf[TableException])
+ def testNoEqualityJoinPredicate1(): Unit = {
+ ds1.join(ds2)
+ // must fail. No equality join predicate
+ .where('d === 'f)
+ .select('c, 'g)
+ .toDataSet[Row]
--- End diff --
replace `toDataSet` call by `toRetractStream[Row]`
> Implement stream-stream proctime non-window inner join
> -------------------------------------------------------
>
> Key: FLINK-6094
> URL: https://issues.apache.org/jira/browse/FLINK-6094
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: Shaoxuan Wang
> Assignee: Hequn Cheng
>
> This includes:
> 1.Implement stream-stream proctime non-window inner join
> 2.Implement the retract process logic for join
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