/**
* 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.hadoop.hive.serde2.lazy;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import junit.framework.TestCase;
import org.apache.hadoop.hive.serde2.SerDeUtils;
import org.apache.hadoop.hive.serde2.io.ByteWritable;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
/**
* Tests LazyArray, LazyMap, LazyStruct and LazyUnion
*
*/
public class TestLazyArrayMapStruct extends TestCase {
/**
* Test the LazyArray class.
*/
public void testLazyArray() throws Throwable {
try {
// Array of Byte
Text nullSequence = new Text("\\N");
ObjectInspector oi = LazyFactory.createLazyObjectInspector(TypeInfoUtils
.getTypeInfosFromTypeString("array<tinyint>").get(0),
new byte[] {(byte) 1}, 0, nullSequence, false, (byte) 0);
LazyArray b = (LazyArray) LazyFactory.createLazyObject(oi);
byte[] data = new byte[] {'-', '1', 1, '\\', 'N', 1, '8'};
TestLazyPrimitive.initLazyObject(b, data, 0, data.length);
assertNull(b.getListElementObject(-1));
assertEquals(new ByteWritable((byte) -1), ((LazyByte) b
.getListElementObject(0)).getWritableObject());
assertEquals(new ByteWritable((byte) -1), ((LazyByte) b.getList().get(0))
.getWritableObject());
assertNull(b.getListElementObject(1));
assertNull(b.getList().get(1));
assertEquals(new ByteWritable((byte) 8), ((LazyByte) b
.getListElementObject(2)).getWritableObject());
assertEquals(new ByteWritable((byte) 8), ((LazyByte) b.getList().get(2))
.getWritableObject());
assertNull(b.getListElementObject(3));
assertEquals(3, b.getList().size());
// Array of String
oi = LazyFactory.createLazyObjectInspector(TypeInfoUtils
.getTypeInfosFromTypeString("array<string>").get(0),
new byte[] {(byte) '\t'}, 0, nullSequence, false, (byte) 0);
b = (LazyArray) LazyFactory.createLazyObject(oi);
data = new byte[] {'a', 'b', '\t', 'c', '\t', '\\', 'N', '\t', '\t', 'd'};
// Note: the first and last element of the byte[] are NOT used
TestLazyPrimitive.initLazyObject(b, data, 1, data.length - 2);
assertNull(b.getListElementObject(-1));
assertEquals(new Text("b"), ((LazyString) b.getListElementObject(0))
.getWritableObject());
assertEquals(new Text("b"), ((LazyString) b.getList().get(0))
.getWritableObject());
assertEquals(new Text("c"), ((LazyString) b.getListElementObject(1))
.getWritableObject());
assertEquals(new Text("c"), ((LazyString) b.getList().get(1))
.getWritableObject());
assertNull((b.getListElementObject(2)));
assertNull((b.getList().get(2)));
assertEquals(new Text(""), ((LazyString) b.getListElementObject(3))
.getWritableObject());
assertEquals(new Text(""), ((LazyString) b.getList().get(3))
.getWritableObject());
assertEquals(new Text(""), ((LazyString) b.getListElementObject(4))
.getWritableObject());
assertEquals(new Text(""), ((LazyString) b.getList().get(4))
.getWritableObject());
assertNull((b.getListElementObject(5)));
assertEquals(5, b.getList().size());
} catch (Throwable e) {
e.printStackTrace();
throw e;
}
}
/**
* Test the LazyMap class.
*/
public void testLazyMap() throws Throwable {
try {
{
// Map of Integer to String
Text nullSequence = new Text("\\N");
ObjectInspector oi = LazyFactory
.createLazyObjectInspector(TypeInfoUtils
.getTypeInfosFromTypeString("map<int,string>").get(0),
new byte[] {(byte) 1, (byte) 2}, 0, nullSequence, false,
(byte) 0);
LazyMap b = (LazyMap) LazyFactory.createLazyObject(oi);
byte[] data = new byte[] {'2', 2, 'd', 'e', 'f', 1, '-', '1', 2, '\\',
'N', 1, '0', 2, '0', 1, '8', 2, 'a', 'b', 'c'};
TestLazyPrimitive.initLazyObject(b, data, 0, data.length);
assertEquals(new Text("def"), ((LazyString) b
.getMapValueElement(new IntWritable(2))).getWritableObject());
assertNull(b.getMapValueElement(new IntWritable(-1)));
assertEquals(new Text("0"), ((LazyString) b
.getMapValueElement(new IntWritable(0))).getWritableObject());
assertEquals(new Text("abc"), ((LazyString) b
.getMapValueElement(new IntWritable(8))).getWritableObject());
assertNull(b.getMapValueElement(new IntWritable(12345)));
assertEquals("{2:'def',-1:null,0:'0',8:'abc'}".replace('\'', '\"'),
SerDeUtils.getJSONString(b, oi));
}
{
// Map of String to String
Text nullSequence = new Text("\\N");
ObjectInspector oi = LazyFactory.createLazyObjectInspector(
TypeInfoUtils.getTypeInfosFromTypeString("map<string,string>").get(
0), new byte[] {(byte) '#', (byte) '\t'}, 0, nullSequence,
false, (byte) 0);
LazyMap b = (LazyMap) LazyFactory.createLazyObject(oi);
byte[] data = new byte[] {'2', '\t', 'd', '\t', 'f', '#', '2', '\t',
'd', '#', '-', '1', '#', '0', '\t', '0', '#', '8', '\t', 'a', 'b', 'c'};
TestLazyPrimitive.initLazyObject(b, data, 0, data.length);
assertEquals(new Text("d\tf"), ((LazyString) b
.getMapValueElement(new Text("2"))).getWritableObject());
assertNull(b.getMapValueElement(new Text("-1")));
assertEquals(new Text("0"), ((LazyString) b
.getMapValueElement(new Text("0"))).getWritableObject());
assertEquals(new Text("abc"), ((LazyString) b
.getMapValueElement(new Text("8"))).getWritableObject());
assertNull(b.getMapValueElement(new Text("-")));
assertEquals("{'2':'d\\tf','2':'d','-1':null,'0':'0','8':'abc'}"
.replace('\'', '\"'), SerDeUtils.getJSONString(b, oi));
}
} catch (Throwable e) {
e.printStackTrace();
throw e;
}
}
/**
* Test the LazyStruct class.
*/
public void testLazyStruct() throws Throwable {
try {
{
ArrayList<TypeInfo> fieldTypeInfos = TypeInfoUtils
.getTypeInfosFromTypeString("int,array<string>,map<string,string>,string");
List<String> fieldNames = Arrays.asList(new String[] {"a", "b", "c",
"d"});
Text nullSequence = new Text("\\N");
ObjectInspector oi = LazyFactory.createLazyStructInspector(fieldNames,
fieldTypeInfos, new byte[] {' ', ':', '='}, nullSequence, false,
false, (byte) 0);
LazyStruct o = (LazyStruct) LazyFactory.createLazyObject(oi);
Text data;
data = new Text("123 a:b:c d=e:f=g hi");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0, data
.getLength());
assertEquals(
"{'a':123,'b':['a','b','c'],'c':{'d':'e','f':'g'},'d':'hi'}"
.replace("'", "\""), SerDeUtils.getJSONString(o, oi));
data = new Text("123 \\N d=e:f=g \\N");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0, data
.getLength());
assertEquals("{'a':123,'b':null,'c':{'d':'e','f':'g'},'d':null}"
.replace("'", "\""), SerDeUtils.getJSONString(o, oi));
data = new Text("\\N a d=\\N:f=g:h no tail");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0, data
.getLength());
assertEquals(
"{'a':null,'b':['a'],'c':{'d':null,'f':'g','h':null},'d':'no'}"
.replace("'", "\""), SerDeUtils.getJSONString(o, oi));
data = new Text("\\N :a:: \\N no tail");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0, data
.getLength());
assertEquals("{'a':null,'b':['','a','',''],'c':null,'d':'no'}".replace(
"'", "\""), SerDeUtils.getJSONString(o, oi));
data = new Text("123 ");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0, data
.getLength());
assertEquals("{'a':123,'b':[],'c':{},'d':''}".replace("'", "\""),
SerDeUtils.getJSONString(o, oi));
data = new Text(": : : :");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0, data
.getLength());
assertEquals("{'a':null,'b':['',''],'c':{'':null,'':null},'d':':'}"
.replace("'", "\""), SerDeUtils.getJSONString(o, oi));
data = new Text("= = = =");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0, data
.getLength());
assertEquals("{'a':null,'b':['='],'c':{'':''},'d':'='}".replace("'",
"\""), SerDeUtils.getJSONString(o, oi));
// test LastColumnTakesRest
oi = LazyFactory.createLazyStructInspector(Arrays.asList(new String[] {
"a", "b", "c", "d"}), fieldTypeInfos,
new byte[] {' ', ':', '='}, nullSequence, true, false, (byte) 0);
o = (LazyStruct) LazyFactory.createLazyObject(oi);
data = new Text("\\N a d=\\N:f=g:h has tail");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0, data
.getLength());
assertEquals(
"{'a':null,'b':['a'],'c':{'d':null,'f':'g','h':null},'d':'has tail'}"
.replace("'", "\""), SerDeUtils.getJSONString(o, oi));
}
} catch (Throwable e) {
e.printStackTrace();
throw e;
}
}
/**
* Test the LazyUnion class.
*/
public void testLazyUnion() throws Throwable {
try {
{
TypeInfo typeInfo = TypeInfoUtils.getTypeInfoFromTypeString(
"uniontype<int,array<string>,map<string,string>,string>");
Text nullSequence = new Text("\\N");
ObjectInspector oi = LazyFactory.createLazyObjectInspector(typeInfo,
new byte[] {'^', ':', '='}, 0, nullSequence, false, (byte) 0);
LazyUnion o = (LazyUnion) LazyFactory.createLazyObject(oi);
Text data;
data = new Text("0^123");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0,
data.getLength());
assertEquals("{0:123}", SerDeUtils.getJSONString(o, oi));
data = new Text("1^a:b:c");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0,
data.getLength());
assertEquals(
"{1:[\"a\",\"b\",\"c\"]}", SerDeUtils.getJSONString(o, oi));
data = new Text("2^d=e:f=g");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0,
data.getLength());
assertEquals(
"{2:{\"d\":\"e\",\"f\":\"g\"}}", SerDeUtils.getJSONString(o, oi));
data = new Text("3^hi");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0,
data.getLength());
assertEquals("{3:\"hi\"}", SerDeUtils.getJSONString(o, oi));
data = new Text("0^\\N");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0,
data.getLength());
assertEquals("{0:null}", SerDeUtils.getJSONString(o, oi));
data = new Text("1^ :a::");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0,
data.getLength());
assertEquals(
"{1:[\" \",\"a\",\"\",\"\"]}", SerDeUtils.getJSONString(o, oi));
data = new Text("2^d=\\N:f=g:h");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0,
data.getLength());
assertEquals(
"{2:{\"d\":null,\"f\":\"g\",\"h\":null}}",
SerDeUtils.getJSONString(o, oi));
data = new Text("2^= ");
TestLazyPrimitive.initLazyObject(o, data.getBytes(), 0,
data.getLength());
assertEquals("{2:{\"\":\" \"}}", SerDeUtils.getJSONString(o, oi));
}
} catch (Throwable e) {
e.printStackTrace();
throw e;
}
}
}