/**
* 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.hive.hcatalog.data;
import java.math.BigDecimal;
import java.sql.Date;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import junit.framework.TestCase;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.common.type.HiveChar;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.common.type.HiveVarchar;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.serde.serdeConstants;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TestJsonSerDe extends TestCase {
private static final Logger LOG = LoggerFactory.getLogger(TestJsonSerDe.class);
public List<Pair<Properties, HCatRecord>> getData() {
List<Pair<Properties, HCatRecord>> data = new ArrayList<Pair<Properties, HCatRecord>>();
List<Object> rlist = new ArrayList<Object>(13);
rlist.add(new Byte("123"));
rlist.add(new Short("456"));
rlist.add(new Integer(789));
rlist.add(new Long(1000L));
rlist.add(new Double(5.3D));
rlist.add(new Float(2.39F));
rlist.add(new String("hcat and hadoop"));
rlist.add(null);
List<Object> innerStruct = new ArrayList<Object>(2);
innerStruct.add(new String("abc"));
innerStruct.add(new String("def"));
rlist.add(innerStruct);
List<Integer> innerList = new ArrayList<Integer>();
innerList.add(314);
innerList.add(007);
rlist.add(innerList);
Map<Short, String> map = new HashMap<Short, String>(3);
map.put(new Short("2"), "hcat is cool");
map.put(new Short("3"), "is it?");
map.put(new Short("4"), "or is it not?");
rlist.add(map);
rlist.add(new Boolean(true));
List<Object> c1 = new ArrayList<Object>();
List<Object> c1_1 = new ArrayList<Object>();
c1_1.add(new Integer(12));
List<Object> i2 = new ArrayList<Object>();
List<Integer> ii1 = new ArrayList<Integer>();
ii1.add(new Integer(13));
ii1.add(new Integer(14));
i2.add(ii1);
Map<String, List<?>> ii2 = new HashMap<String, List<?>>();
List<Integer> iii1 = new ArrayList<Integer>();
iii1.add(new Integer(15));
ii2.put("phew", iii1);
i2.add(ii2);
c1_1.add(i2);
c1.add(c1_1);
rlist.add(c1);
rlist.add(HiveDecimal.create(new BigDecimal("123.45")));//prec 5, scale 2
rlist.add(new HiveChar("hive_char", 10));
rlist.add(new HiveVarchar("hive_varchar", 20));
rlist.add(Date.valueOf("2014-01-07"));
rlist.add(new Timestamp(System.currentTimeMillis()));
List<Object> nlist = new ArrayList<Object>(13);
nlist.add(null); // tinyint
nlist.add(null); // smallint
nlist.add(null); // int
nlist.add(null); // bigint
nlist.add(null); // double
nlist.add(null); // float
nlist.add(null); // string
nlist.add(null); // string
nlist.add(null); // struct
nlist.add(null); // array
nlist.add(null); // map
nlist.add(null); // bool
nlist.add(null); // complex
nlist.add(null); //decimal(5,2)
nlist.add(null); //char(10)
nlist.add(null); //varchar(20)
nlist.add(null); //date
nlist.add(null); //timestamp
String typeString =
"tinyint,smallint,int,bigint,double,float,string,string,"
+ "struct<a:string,b:string>,array<int>,map<smallint,string>,boolean,"
+ "array<struct<i1:int,i2:struct<ii1:array<int>,ii2:map<string,struct<iii1:int>>>>>," +
"decimal(5,2),char(10),varchar(20),date,timestamp";
Properties props = new Properties();
props.put(serdeConstants.LIST_COLUMNS, "ti,si,i,bi,d,f,s,n,r,l,m,b,c1,bd,hc,hvc,dt,ts");
props.put(serdeConstants.LIST_COLUMN_TYPES, typeString);
// props.put(Constants.SERIALIZATION_NULL_FORMAT, "\\N");
// props.put(Constants.SERIALIZATION_FORMAT, "1");
data.add(new Pair<Properties, HCatRecord>(props, new DefaultHCatRecord(rlist)));
data.add(new Pair<Properties, HCatRecord>(props, new DefaultHCatRecord(nlist)));
return data;
}
public void testRW() throws Exception {
Configuration conf = new Configuration();
for (Pair<Properties, HCatRecord> e : getData()) {
Properties tblProps = e.first;
HCatRecord r = e.second;
HCatRecordSerDe hrsd = new HCatRecordSerDe();
hrsd.initialize(conf, tblProps);
JsonSerDe jsde = new JsonSerDe();
jsde.initialize(conf, tblProps);
LOG.info("ORIG:{}", r);
Writable s = hrsd.serialize(r, hrsd.getObjectInspector());
LOG.info("ONE:{}", s);
Object o1 = hrsd.deserialize(s);
StringBuilder msg = new StringBuilder();
boolean isEqual = HCatDataCheckUtil.recordsEqual(r, (HCatRecord) o1);
assertTrue(msg.toString(), isEqual);
Writable s2 = jsde.serialize(o1, hrsd.getObjectInspector());
LOG.info("TWO:{}", s2);
Object o2 = jsde.deserialize(s2);
LOG.info("deserialized TWO : {} ", o2);
msg.setLength(0);
isEqual = HCatDataCheckUtil.recordsEqual(r, (HCatRecord) o2, msg);
assertTrue(msg.toString(), isEqual);
}
}
public void testRobustRead() throws Exception {
/**
* This test has been added to account for HCATALOG-436
* We write out columns with "internal column names" such
* as "_col0", but try to read with regular column names.
*/
Configuration conf = new Configuration();
for (Pair<Properties, HCatRecord> e : getData()) {
Properties tblProps = e.first;
HCatRecord r = e.second;
Properties internalTblProps = new Properties();
for (Map.Entry pe : tblProps.entrySet()) {
if (!pe.getKey().equals(serdeConstants.LIST_COLUMNS)) {
internalTblProps.put(pe.getKey(), pe.getValue());
} else {
internalTblProps.put(pe.getKey(), getInternalNames((String) pe.getValue()));
}
}
LOG.info("orig tbl props:{}", tblProps);
LOG.info("modif tbl props:{}", internalTblProps);
JsonSerDe wjsd = new JsonSerDe();
wjsd.initialize(conf, internalTblProps);
JsonSerDe rjsd = new JsonSerDe();
rjsd.initialize(conf, tblProps);
LOG.info("ORIG:{}", r);
Writable s = wjsd.serialize(r, wjsd.getObjectInspector());
LOG.info("ONE:{}", s);
Object o1 = wjsd.deserialize(s);
LOG.info("deserialized ONE : {} ", o1);
Object o2 = rjsd.deserialize(s);
LOG.info("deserialized TWO : {} ", o2);
StringBuilder msg = new StringBuilder();
boolean isEqual = HCatDataCheckUtil.recordsEqual(r, (HCatRecord) o2, msg);
assertTrue(msg.toString(), isEqual);
}
}
String getInternalNames(String columnNames) {
if (columnNames == null) {
return null;
}
if (columnNames.isEmpty()) {
return "";
}
StringBuffer sb = new StringBuffer();
int numStrings = columnNames.split(",").length;
sb.append("_col0");
for (int i = 1; i < numStrings; i++) {
sb.append(",");
sb.append(HiveConf.getColumnInternalName(i));
}
return sb.toString();
}
/**
* This test tests that our json deserialization is not too strict, as per HIVE-6166
*
* i.e, if our schema is "s:struct<a:int,b:string>,k:int", and we pass in
* data that looks like : {
* "x" : "abc" ,
* "t" : {
* "a" : "1",
* "b" : "2",
* "c" : [
* { "x" : 2 , "y" : 3 } ,
* { "x" : 3 , "y" : 2 }
* ]
* } ,
* "s" : {
* "a" : 2 ,
* "b" : "blah",
* "c": "woo"
* }
* }
*
* Then it should still work, and ignore the "x" and "t" field and "c" subfield of "s", and it
* should read k as null.
*/
public void testLooseJsonReadability() throws Exception {
Configuration conf = new Configuration();
Properties props = new Properties();
props.put(serdeConstants.LIST_COLUMNS, "s,k");
props.put(serdeConstants.LIST_COLUMN_TYPES, "struct<a:int,b:string>,int");
JsonSerDe rjsd = new JsonSerDe();
rjsd.initialize(conf, props);
Text jsonText = new Text("{ \"x\" : \"abc\" , "
+ " \"t\" : { \"a\":\"1\", \"b\":\"2\", \"c\":[ { \"x\":2 , \"y\":3 } , { \"x\":3 , \"y\":2 }] } ,"
+"\"s\" : { \"a\" : 2 , \"b\" : \"blah\", \"c\": \"woo\" } }");
List<Object> expected = new ArrayList<Object>();
List<Object> inner = new ArrayList<Object>();
inner.add(2);
inner.add("blah");
expected.add(inner);
expected.add(null);
HCatRecord expectedRecord = new DefaultHCatRecord(expected);
HCatRecord r = (HCatRecord) rjsd.deserialize(jsonText);
System.err.println("record : " + r.toString());
assertTrue(HCatDataCheckUtil.recordsEqual(r, expectedRecord));
}
}