/*
*
* Licensed 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.storage.jdbc.dao;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.equalToIgnoringCase;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.Assert.assertThat;
import org.apache.hadoop.conf.Configuration;
import org.junit.Test;
import org.apache.hive.storage.jdbc.conf.JdbcStorageConfig;
import org.apache.hive.storage.jdbc.exception.HiveJdbcDatabaseAccessException;
import java.util.List;
import java.util.Map;
public class GenericJdbcDatabaseAccessorTest {
@Test
public void testGetColumnNames_starQuery() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
List<String> columnNames = accessor.getColumnNames(conf);
assertThat(columnNames, is(notNullValue()));
assertThat(columnNames.size(), is(equalTo(7)));
assertThat(columnNames.get(0), is(equalToIgnoringCase("strategy_id")));
}
@Test
public void testGetColumnNames_fieldListQuery() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
conf.set(JdbcStorageConfig.QUERY.getPropertyName(), "select name,referrer from test_strategy");
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
List<String> columnNames = accessor.getColumnNames(conf);
assertThat(columnNames, is(notNullValue()));
assertThat(columnNames.size(), is(equalTo(2)));
assertThat(columnNames.get(0), is(equalToIgnoringCase("name")));
}
@Test(expected = HiveJdbcDatabaseAccessException.class)
public void testGetColumnNames_invalidQuery() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
conf.set(JdbcStorageConfig.QUERY.getPropertyName(), "select * from invalid_strategy");
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
@SuppressWarnings("unused")
List<String> columnNames = accessor.getColumnNames(conf);
}
@Test
public void testGetTotalNumberOfRecords() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
int numRecords = accessor.getTotalNumberOfRecords(conf);
assertThat(numRecords, is(equalTo(5)));
}
@Test
public void testGetTotalNumberOfRecords_whereClause() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
conf.set(JdbcStorageConfig.QUERY.getPropertyName(), "select * from test_strategy where strategy_id = '5'");
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
int numRecords = accessor.getTotalNumberOfRecords(conf);
assertThat(numRecords, is(equalTo(1)));
}
@Test
public void testGetTotalNumberOfRecords_noRecords() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
conf.set(JdbcStorageConfig.QUERY.getPropertyName(), "select * from test_strategy where strategy_id = '25'");
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
int numRecords = accessor.getTotalNumberOfRecords(conf);
assertThat(numRecords, is(equalTo(0)));
}
@Test(expected = HiveJdbcDatabaseAccessException.class)
public void testGetTotalNumberOfRecords_invalidQuery() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
conf.set(JdbcStorageConfig.QUERY.getPropertyName(), "select * from strategyx where strategy_id = '5'");
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
@SuppressWarnings("unused")
int numRecords = accessor.getTotalNumberOfRecords(conf);
}
@Test
public void testGetRecordIterator() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
JdbcRecordIterator iterator = accessor.getRecordIterator(conf, 2, 0);
assertThat(iterator, is(notNullValue()));
int count = 0;
while (iterator.hasNext()) {
Map<String, String> record = iterator.next();
count++;
assertThat(record, is(notNullValue()));
assertThat(record.size(), is(equalTo(7)));
assertThat(record.get("STRATEGY_ID"), is(equalTo(String.valueOf(count))));
}
assertThat(count, is(equalTo(2)));
iterator.close();
}
@Test
public void testGetRecordIterator_offsets() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
JdbcRecordIterator iterator = accessor.getRecordIterator(conf, 2, 2);
assertThat(iterator, is(notNullValue()));
int count = 0;
while (iterator.hasNext()) {
Map<String, String> record = iterator.next();
count++;
assertThat(record, is(notNullValue()));
assertThat(record.size(), is(equalTo(7)));
assertThat(record.get("STRATEGY_ID"), is(equalTo(String.valueOf(count + 2))));
}
assertThat(count, is(equalTo(2)));
iterator.close();
}
@Test
public void testGetRecordIterator_emptyResultSet() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
conf.set(JdbcStorageConfig.QUERY.getPropertyName(), "select * from test_strategy where strategy_id = '25'");
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
JdbcRecordIterator iterator = accessor.getRecordIterator(conf, 0, 2);
assertThat(iterator, is(notNullValue()));
assertThat(iterator.hasNext(), is(false));
iterator.close();
}
@Test
public void testGetRecordIterator_largeOffset() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
JdbcRecordIterator iterator = accessor.getRecordIterator(conf, 10, 25);
assertThat(iterator, is(notNullValue()));
assertThat(iterator.hasNext(), is(false));
iterator.close();
}
@Test(expected = HiveJdbcDatabaseAccessException.class)
public void testGetRecordIterator_invalidQuery() throws HiveJdbcDatabaseAccessException {
Configuration conf = buildConfiguration();
conf.set(JdbcStorageConfig.QUERY.getPropertyName(), "select * from strategyx");
DatabaseAccessor accessor = DatabaseAccessorFactory.getAccessor(conf);
@SuppressWarnings("unused")
JdbcRecordIterator iterator = accessor.getRecordIterator(conf, 0, 2);
}
private Configuration buildConfiguration() {
String scriptPath =
GenericJdbcDatabaseAccessorTest.class.getClassLoader().getResource("test_script.sql")
.getPath();
Configuration config = new Configuration();
config.set(JdbcStorageConfig.DATABASE_TYPE.getPropertyName(), "H2");
config.set(JdbcStorageConfig.JDBC_DRIVER_CLASS.getPropertyName(), "org.h2.Driver");
config.set(JdbcStorageConfig.JDBC_URL.getPropertyName(), "jdbc:h2:mem:test;MODE=MySQL;INIT=runscript from '"
+ scriptPath + "'");
config.set(JdbcStorageConfig.QUERY.getPropertyName(), "select * from test_strategy");
return config;
}
}