| /* |
| * 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.pig.test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.pig.PigServer; |
| import org.apache.pig.scripting.ScriptEngine; |
| import org.apache.pig.tools.pigstats.PigStats; |
| import org.junit.Test; |
| |
| public class TestScriptingLanguagePython { |
| |
| @Test |
| public void varargTest() throws Exception { |
| System.setProperty("python.cachedir", System.getProperty("java.io.tmpdir")); |
| PigServer pigServer = new PigServer(Util.getLocalTestMode()); |
| String[] script = { |
| "#!/usr/bin/python", |
| |
| "from org.apache.pig.scripting import *", |
| |
| "@outputSchema(\"s:chararray\")", |
| "def firstNonempty(*args):", |
| "\tfor v in args:", |
| "\t\tif len(v) != 0:", |
| "\t\t\treturn v", |
| "\treturn ''", |
| |
| "if __name__ == \"__main__\":", |
| "\tPig.compile(\"\"\"", |
| "data = load 'simple_table' AS (string1:chararray, string2:chararray);", |
| "data = foreach data generate firstNonempty(string1, string2) as id, string1, string2;", |
| "store data into 'simple_out';", |
| "\"\"\").bind().runSingle()" |
| }; |
| String[] input = { |
| "1\t3", |
| "2\t4", |
| "3\t5" |
| }; |
| |
| Util.deleteFile(pigServer.getPigContext(), "simple_table"); |
| Util.deleteFile(pigServer.getPigContext(), "simple_out"); |
| Util.createInputFile(pigServer.getPigContext(), "simple_table", input); |
| Util.createLocalInputFile( "testScript.py", script); |
| |
| ScriptEngine scriptEngine = ScriptEngine.getInstance("jython"); |
| Map<String, List<PigStats>> statsMap = scriptEngine.run(pigServer.getPigContext(), "testScript.py"); |
| assertEquals(1, statsMap.size()); |
| Iterator<List<PigStats>> it = statsMap.values().iterator(); |
| PigStats stats = it.next().get(0); |
| assertTrue(stats.isSuccessful()); |
| |
| String[] output = Util.readOutput(pigServer.getPigContext(), "simple_out"); |
| assertEquals(3, output.length); |
| assertEquals(output[0], "1\t1\t3"); |
| assertEquals(output[1], "2\t2\t4"); |
| assertEquals(output[2], "3\t3\t5"); |
| } |
| |
| } |