/*
* 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.IOException;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pig.ResourceSchema;
import org.apache.pig.ResourceSchema.ResourceFieldSchema;
import org.apache.pig.builtin.PigStorage;
import org.apache.pig.data.BagFactory;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.DataByteArray;
import org.apache.pig.data.DataType;
import org.apache.pig.data.DefaultBagFactory;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.junit.Test;
public class TestTextDataParser extends junit.framework.TestCase {
private final Log log = LogFactory.getLog(getClass());
private TupleFactory tupleFactory = TupleFactory.getInstance();
private BagFactory bagFactory = DefaultBagFactory.getInstance();
PigStorage ps = new PigStorage();
ResourceFieldSchema getTupleFieldSchema() throws IOException {
ResourceFieldSchema stringfs = new ResourceFieldSchema();
stringfs.setType(DataType.CHARARRAY);
ResourceFieldSchema intfs = new ResourceFieldSchema();
intfs.setType(DataType.INTEGER);
ResourceSchema tupleSchema = new ResourceSchema();
tupleSchema.setFields(new ResourceFieldSchema[]{intfs, stringfs});
ResourceFieldSchema tuplefs = new ResourceFieldSchema();
tuplefs.setSchema(tupleSchema);
tuplefs.setType(DataType.TUPLE);
return tuplefs;
}
public ResourceFieldSchema getBagFieldSchema() throws IOException{
ResourceFieldSchema tuplefs = getTupleFieldSchema();
ResourceSchema outBagSchema = new ResourceSchema();
outBagSchema.setFields(new ResourceFieldSchema[]{tuplefs});
ResourceFieldSchema outBagfs = new ResourceFieldSchema();
outBagfs.setSchema(outBagSchema);
outBagfs.setType(DataType.BAG);
return outBagfs;
}
ResourceFieldSchema getLongFieldSchema() {
ResourceFieldSchema longfs = new ResourceFieldSchema();
longfs.setType(DataType.LONG);
return longfs;
}
@Test
public void testBoolean() throws Exception{
String myBoolean = "true";
Boolean b = ps.getLoadCaster().bytesToBoolean(myBoolean.getBytes());
assertTrue(b.equals(Boolean.TRUE));
}
@Test
public void testInteger() throws Exception{
String myInteger = "1";
Integer i = ps.getLoadCaster().bytesToInteger(myInteger.getBytes());
assertTrue(i.equals(1));
}
@Test
public void testLong() throws Exception{
String myLong = "1";
Long l = ps.getLoadCaster().bytesToLong(myLong.getBytes());
assertTrue(l.equals(1l));
}
@Test
public void testFloat() throws Exception{
String myFloat = "0.1";
Float f = ps.getLoadCaster().bytesToFloat(myFloat.getBytes());
assertTrue(f.equals(0.1f));
}
@Test
public void testDouble() throws Exception{
String myDouble = "0.1";
Double d = ps.getLoadCaster().bytesToDouble(myDouble.getBytes());
assertTrue(d.equals(0.1));
}
@Test
public void testString() throws Exception{
String myString = "1a";
String s = ps.getLoadCaster().bytesToCharArray(myString.getBytes());
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 = ps.getLoadCaster().bytesToMap(myMap.getBytes());
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 = ps.getLoadCaster().bytesToMap(myMap.getBytes());
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 = ps.getLoadCaster().bytesToMap(myMap.getBytes());
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 = ps.getLoadCaster().bytesToMap(myMap.getBytes());
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 = ps.getLoadCaster().bytesToMap(myMap.getBytes());
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 = ps.getLoadCaster().bytesToTuple(myTuple.getBytes(), getTupleFieldSchema());
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 = ps.getLoadCaster().bytesToBag(myBag.getBytes(), getBagFieldSchema());
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));
}
@Test
public void testEmptyBag() throws Exception{
String myBag = "{}";
Object o = ps.getLoadCaster().bytesToBag(myBag.getBytes(), getBagFieldSchema());
assertTrue(o instanceof DataBag);
DataBag b = (DataBag)o;
assertTrue(b.size()==0);
}
}