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* 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,
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* 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.ExecType;
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(ExecType.LOCAL);
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");
}
}