/*
* 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 java.io.ByteArrayInputStream;
import java.util.Map;
import org.junit.Test;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pig.data.BagFactory;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.DataByteArray;
import org.apache.pig.data.DefaultBagFactory;
import org.apache.pig.data.DefaultTupleFactory;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.apache.pig.data.parser.TextDataParser;
import org.apache.pig.data.parser.ParseException ;
public class TestTextDataParser extends junit.framework.TestCase {
private final Log log = LogFactory.getLog(getClass());
private TupleFactory tupleFactory = DefaultTupleFactory.getInstance();
private BagFactory bagFactory = DefaultBagFactory.getInstance();
@Test
public void testInteger() throws Exception{
String myInteger = "1";
Integer i = (Integer)parseTextData(myInteger);
assertTrue(i.equals(1));
}
@Test
public void testLong() throws Exception{
String myLong = "1l";
Long l = (Long)parseTextData(myLong);
assertTrue(l.equals(1l));
}
@Test
public void testFloat() throws Exception{
String myFloat = "0.1f";
Float f = (Float)parseTextData(myFloat);
assertTrue(f.equals(0.1f));
}
@Test
public void testDouble() throws Exception{
String myDouble = "0.1";
Double d = (Double)parseTextData(myDouble);
assertTrue(d.equals(0.1));
}
@Test
public void testString() throws Exception{
String myString = "1a";
String s = (String)parseTextData(myString);
assertTrue(s.equals(myString));
}
//the value types of a map should always be a byte array
//irrespective of the actual type
@SuppressWarnings("unchecked")
@Test
public void testMapStringValueType() throws Exception{
String myMap = "[key1#value1]";
Map<String, Object> map = (Map<String, Object>)parseTextData(myMap);
String key = map.keySet().iterator().next();
Object v = map.get("key1");
assertTrue(key.equals("key1"));
assertTrue(v instanceof DataByteArray);
String value = new String(((DataByteArray)v).get());
assertTrue(value.equals("value1"));
}
//the value types of a map should always be a byte array
//irrespective of the actual type
@SuppressWarnings("unchecked")
@Test
public void testMapIntegerValueType() throws Exception{
String myMap = "[key1#1]";
Map<String, Object> map = (Map<String, Object>)parseTextData(myMap);
String key = map.keySet().iterator().next();
Object v = map.get("key1");
assertTrue(key.equals("key1"));
assertTrue(v instanceof DataByteArray);
String value = new String(((DataByteArray)v).get());
assertTrue(value.equals("1"));
}
//the value types of a map should always be a byte array
//irrespective of the actual type
@SuppressWarnings("unchecked")
@Test
public void testMapLongValueType() throws Exception{
String myMap = "[key1#1l]";
Map<String, Object> map = (Map<String, Object>)parseTextData(myMap);
String key = map.keySet().iterator().next();
Object v = map.get("key1");
assertTrue(key.equals("key1"));
assertTrue(v instanceof DataByteArray);
String value = new String(((DataByteArray)v).get());
assertTrue(value.equals("1l"));
}
//the value types of a map should always be a byte array
//irrespective of the actual type
@SuppressWarnings("unchecked")
@Test
public void testMapFloatValueType() throws Exception{
String myMap = "[key1#0.1f]";
Map<String, Object> map = (Map<String, Object>)parseTextData(myMap);
String key = map.keySet().iterator().next();
Object v = map.get("key1");
assertTrue(key.equals("key1"));
assertTrue(v instanceof DataByteArray);
String value = new String(((DataByteArray)v).get());
assertTrue(value.equals("0.1f"));
}
//the value types of a map should always be a byte array
//irrespective of the actual type
@SuppressWarnings("unchecked")
@Test
public void testMapDoubleValueType() throws Exception{
String myMap = "[key1#0.1]";
Map<String, Object> map = (Map<String, Object>)parseTextData(myMap);
String key = map.keySet().iterator().next();
Object v = map.get("key1");
assertTrue(key.equals("key1"));
assertTrue(v instanceof DataByteArray);
String value = new String(((DataByteArray)v).get());
assertTrue(value.equals("0.1"));
}
@Test
public void testTuple() throws Exception{
String myTuple = "(1,a)";
Object o = parseTextData(myTuple);
assertTrue(o instanceof Tuple);
Tuple t = (Tuple)o;
Tuple expectedTuple = tupleFactory.newTuple(2);
expectedTuple.set(0, 1);
expectedTuple.set(1, "a");
assertTrue(t.equals(expectedTuple));
}
@Test
public void testBag() throws Exception{
String myBag = "{(1,a),(2,b)}";
Object o = parseTextData(myBag);
assertTrue(o instanceof DataBag);
DataBag b = (DataBag)o;
DataBag expectedBag = bagFactory.newDefaultBag();
Tuple expectedTuple = tupleFactory.newTuple(2);
expectedTuple.set(0, 1);
expectedTuple.set(1, "a");
expectedBag.add(expectedTuple);
expectedTuple = tupleFactory.newTuple(2);
expectedTuple.set(0, 2);
expectedTuple.set(1, "b");
expectedBag.add(expectedTuple);
assertTrue(b.equals(expectedBag));
}
private Object parseTextData(String pigConstantAsString) throws ParseException {
ByteArrayInputStream stream = new ByteArrayInputStream(pigConstantAsString.getBytes()) ;
TextDataParser textDataParser = new TextDataParser(stream) ;
return textDataParser.Datum();
}
}