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https://issues.apache.org/jira/browse/FLINK-4554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15726114#comment-15726114
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ASF GitHub Bot commented on FLINK-4554:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/2919#discussion_r91124734
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/api/table/expressions/ArrayTypeTest.scala
---
@@ -0,0 +1,342 @@
+/*
+ * 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.expressions
+
+import java.sql.Date
+
+import org.apache.flink.api.common.typeinfo.{PrimitiveArrayTypeInfo,
TypeInformation}
+import org.apache.flink.api.java.typeutils.ObjectArrayTypeInfo
+import org.apache.flink.api.scala.table._
+import org.apache.flink.api.table.expressions.utils.ExpressionTestBase
+import org.apache.flink.api.table.typeutils.RowTypeInfo
+import org.apache.flink.api.table.{Row, Types, ValidationException}
+import org.junit.Test
+
+class ArrayTypeTest extends ExpressionTestBase {
+
+ @Test(expected = classOf[ValidationException])
+ def testEmptyArraySql(): Unit = {
+ testSqlApi("ARRAY[]", "FAIL")
+ }
+
+ @Test(expected = classOf[ValidationException])
+ def testEmptyArrayTableApi(): Unit = {
+ testTableApi("FAIL", "array()", "FAIL")
+ }
+
+ @Test(expected = classOf[ValidationException])
+ def testNullArraySql(): Unit = {
+ testSqlApi("ARRAY[NULL]", "FAIL")
+ }
+
+ @Test(expected = classOf[ValidationException])
+ def testDifferentTypesArraySql(): Unit = {
+ testSqlApi("ARRAY[1, TRUE]", "FAIL")
+ }
+
+ @Test(expected = classOf[ValidationException])
+ def testDifferentTypesArrayTableApi(): Unit = {
+ testTableApi("FAIL", "array(1, true)", "FAIL")
+ }
+
+ @Test(expected = classOf[ValidationException])
+ def testUnsupportedComparison(): Unit = {
+ testAllApis(
+ 'f2 <= 'f5.at(1),
+ "f2 <= f5.at(1)",
+ "f2 <= f5[1]",
+ "FAIL")
+ }
+
+ @Test(expected = classOf[ValidationException])
+ def testElementNonArray(): Unit = {
--- End diff --
test other APIs as well?
> Add support for array types
> ---------------------------
>
> Key: FLINK-4554
> URL: https://issues.apache.org/jira/browse/FLINK-4554
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> Support creating arrays:
> {code}ARRAY[1, 2, 3]{code}
> Access array values:
> {code}myArray[3]{code}
> And operations like:
> {{UNNEST, UNNEST WITH ORDINALITY, CARDINALITY}}
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