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Version: 2.4.0

Kylin JDBC Driver

Authentication​

Build on Apache Kylin authentication restful service. Supported parameters:​
  • user : username
  • password : password
  • ssl: true/false. Default be false; If true, all the services call will use https.

Connection URL format:​

jdbc:kylin://<hostname>:<port>/<kylin_project_name>
  • If "ssl" = true, the "port" should be Kylin server's HTTPS port;
  • If "port" is not specified, the driver will use default port: HTTP 80, HTTPS 443;
  • The "kylin_project_name" must be specified and user need ensure it exists in Kylin server;

1. Query with Statement​

Driver driver = (Driver) Class.forName("org.apache.kylin.jdbc.Driver").newInstance();

Properties info = new Properties();
info.put("user", "ADMIN");
info.put("password", "KYLIN");
Connection conn = driver.connect("jdbc:kylin://localhost:7070/kylin_project_name", info);
Statement state = conn.createStatement();
ResultSet resultSet = state.executeQuery("select * from test_table");

while (resultSet.next()) {
    assertEquals("foo", resultSet.getString(1));
    assertEquals("bar", resultSet.getString(2));
    assertEquals("tool", resultSet.getString(3));
}

2. Query with PreparedStatement​

Supported prepared statement parameters:​
  • setString
  • setInt
  • setShort
  • setLong
  • setFloat
  • setDouble
  • setBoolean
  • setByte
  • setDate
  • setTime
  • setTimestamp
Driver driver = (Driver) Class.forName("org.apache.kylin.jdbc.Driver").newInstance();
Properties info = new Properties();
info.put("user", "ADMIN");
info.put("password", "KYLIN");
Connection conn = driver.connect("jdbc:kylin://localhost:7070/kylin_project_name", info);
PreparedStatement state = conn.prepareStatement("select * from test_table where id=?");
state.setInt(1, 10);
ResultSet resultSet = state.executeQuery();

while (resultSet.next()) {
    assertEquals("foo", resultSet.getString(1));
    assertEquals("bar", resultSet.getString(2));
    assertEquals("tool", resultSet.getString(3));
}

3. Get query result set metadata​

Kylin jdbc driver supports metadata list methods: List catalog, schema, table and column with sql pattern filters(such as %).

Driver driver = (Driver) Class.forName("org.apache.kylin.jdbc.Driver").newInstance();
Properties info = new Properties();
info.put("user", "ADMIN");
info.put("password", "KYLIN");
Connection conn = driver.connect("jdbc:kylin://localhost:7070/kylin_project_name", info);
Statement state = conn.createStatement();
ResultSet resultSet = state.executeQuery("select * from test_table");

ResultSet tables = conn.getMetaData().getTables(null, null, "dummy", null);
while (tables.next()) {
    for (int i = 0; i < 10; i++) {
        assertEquals("dummy", tables.getString(i + 1));
    }
}