package com.mongodb.hadoop.hive;
import com.mongodb.MongoClient;
import com.mongodb.client.MongoCollection;
import org.bson.Document;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.sql.SQLException;
import static org.junit.Assert.assertEquals;
public class HiveQueryTest extends HiveTest {
private static MongoCollection<Document> coll;
@Before
public void setUp() {
MongoClient client = new MongoClient("localhost:27017");
coll = client.getDatabase("mongo_hadoop").getCollection("hive_query");
for (int i = 0; i < 1000; ++i) {
coll.insertOne(new Document("i", i).append("j", i % 5));
}
}
@After
public void tearDown() {
coll.drop();
dropTable("querytest");
}
@Test
public void testQueryPushdown() throws SQLException {
execute(
"CREATE EXTERNAL TABLE querytest (id STRING, i INT, j INT) "
+ "STORED BY \"com.mongodb.hadoop.hive.MongoStorageHandler\" "
+ "WITH SERDEPROPERTIES(\"mongo.columns.mapping\"="
+ "'{\"id\":\"_id\"}') "
+ "TBLPROPERTIES(\"mongo.uri\"="
+ "\"mongodb://localhost:27017/mongo_hadoop.hive_query\")");
Results results = query("SELECT * FROM querytest WHERE i > 20");
assertEquals(979, results.size());
}
@Test
public void testQueryPushdownWithQueryTable() throws SQLException {
execute(
"CREATE EXTERNAL TABLE querytest (id STRING, i INT, j INT) "
+ "STORED BY \"com.mongodb.hadoop.hive.MongoStorageHandler\" "
+ "WITH SERDEPROPERTIES(\"mongo.columns.mapping\"="
+ "'{\"id\":\"_id\"}') "
+ "TBLPROPERTIES(\"mongo.uri\"="
+ "\"mongodb://localhost:27017/mongo_hadoop.hive_query\","
+ "\"mongo.input.query\"='{\"j\":0}')");
Results results = query("SELECT * FROM querytest WHERE i > 20");
assertEquals(195, results.size());
results = query("SELECT * from querytest WHERE j > 2");
assertEquals(0, results.size());
}
}