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SampleJDBC.java
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SampleJDBC.java
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/*
* Copyright 2022 HEAVY.AI, Inc.
*
* 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.
*/
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
public class SampleJDBC {
// JDBC driver name and database URL
static final String JDBC_DRIVER = "com.omnisci.jdbc.OmniSciDriver";
static final String DB_URL = "jdbc:omnisci:localhost:6274:mapd";
// Connection protocol http|https|binary
static final String PROTOCOL = "binary";
// Database credentials
static final String USER = "mapd";
static final String PASS = "HyperInteractive";
public static void main(String[] args) {
Connection conn = null;
Statement stmt = null;
try {
// STEP 1: Register JDBC driver
Class.forName(JDBC_DRIVER);
// STEP 2: Open a connection
Properties pt = new Properties();
pt.setProperty("user", USER);
pt.setProperty("password", PASS);
pt.setProperty("protocol", PROTOCOL);
conn = DriverManager.getConnection(DB_URL, pt);
// STEP 3: Execute a query
stmt = conn.createStatement();
String sql = "SELECT uniquecarrier from flights_2008_10k"
+ " GROUP BY uniquecarrier limit 5";
ResultSet rs = stmt.executeQuery(sql);
// STEP 4: Extract data from result set
while (rs.next()) {
String uniquecarrier = rs.getString("uniquecarrier");
System.out.println("uniquecarrier: " + uniquecarrier);
}
// STEP 5: Clean-up environment
rs.close();
stmt.close();
conn.close();
} catch (SQLException se) {
// Handle errors for JDBC
se.printStackTrace();
} catch (Exception e) {
// Handle errors for Class.forName
e.printStackTrace();
} finally {
// finally block used to close resources
try {
if (stmt != null) {
stmt.close();
}
} catch (SQLException se2) {
} // nothing we can do
try {
if (conn != null) {
conn.close();
}
} catch (SQLException se) {
se.printStackTrace();
} // end finally try
} // end try
} // end main
} // end SampleJDBC