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https://issues.apache.org/jira/browse/FLINK-2152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14604562#comment-14604562
]
ASF GitHub Bot commented on FLINK-2152:
---------------------------------------
Github user chiwanpark commented on a diff in the pull request:
https://github.com/apache/flink/pull/832#discussion_r33419462
--- Diff:
flink-tests/src/test/scala/org/apache/flink/api/scala/util/DataSetUtilsITCase.scala
---
@@ -0,0 +1,69 @@
+/*
+ * 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.scala.util
+
+import org.apache.flink.api.scala._
+import org.apache.flink.test.util.{MultipleProgramsTestBase, TestBaseUtils}
+import org.junit.rules.TemporaryFolder
+import org.junit.runner.RunWith
+import org.junit.runners.Parameterized
+import org.junit.{After, Before, Rule, Test}
+import org.apache.flink.api.scala.DataSetUtils.utilsToDataSet
+
+@RunWith(classOf[Parameterized])
+class DataSetUtilsITCase (mode:
MultipleProgramsTestBase.TestExecutionMode) extends
+MultipleProgramsTestBase(mode){
+
+ private var resultPath: String = null
+ private var expectedResult: String = null
+
+ var tempFolder: TemporaryFolder = new TemporaryFolder()
+
+ @Rule
+ def getFolder(): TemporaryFolder = {
+ tempFolder;
+ }
+
+ @Before
+ @throws(classOf[Exception])
+ def before {
+ resultPath = tempFolder.newFile.toURI.toString
+ }
+
+ @Test
+ @throws(classOf[Exception])
+ def testZipWithIndex {
+ val env: ExecutionEnvironment =
ExecutionEnvironment.getExecutionEnvironment
+ env.setParallelism(1)
+
+ val input: DataSet[String] = env.fromElements("A", "B", "C", "D", "E",
"F")
+ val result: DataSet[(Long, String)] = input.zipWithIndex
+
+ result.writeAsCsv(resultPath, "\n", ",")
+ env.execute()
+
+ expectedResult = "0,A\n" + "1,B\n" + "2,C\n" + "3,D\n" + "4,E\n" +
"5,F"
+ }
+
+ @After
+ @throws(classOf[Exception])
+ def after {
--- End diff --
Add a parenthesis and return type.
> Provide zipWithIndex utility in flink-contrib
> ---------------------------------------------
>
> Key: FLINK-2152
> URL: https://issues.apache.org/jira/browse/FLINK-2152
> Project: Flink
> Issue Type: Improvement
> Components: Java API
> Reporter: Robert Metzger
> Assignee: Andra Lungu
> Priority: Trivial
> Labels: starter
>
> We should provide a simple utility method for zipping elements in a data set
> with a dense index.
> its up for discussion whether we want it directly in the API or if we should
> provide it only as a utility from {{flink-contrib}}.
> I would put it in {{flink-contrib}}.
> See my answer on SO:
> http://stackoverflow.com/questions/30596556/zipwithindex-on-apache-flink
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