connect()

Method that returns a new database connection object.

connect(url, user, password)

This method returns a new database Connection object after connecting to the given URL and authenticating the connection with the provided user and password information.
The function accepts arguments as described here: https://docs.oracle.com/javase/8/docs/api/java/sql/DriverManager.html#getConnection-java.lang.String-java.lang.String-java.lang.String-.
In the returned Connection object normally any public method should be available. The returned Connection object is described here: https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html.

Note: Make sure to close any Connection object created by connect() and any other closable resources created from the Connection instance (ResultSet, etc.).

url

String that represents a database url of the form jdbc:subprotocol:subname, e.g. 'jdbc:mysql://localhost:3306/mycompany'.
The syntax will be specific to the database, or more precisely the JDBC connector. Currently Datamapper supports the following JDBC connectors:

• com.mysql.cj.jdbc.Driver

• sun.jdbc.odbc.JdbcOdbcDriver

• com.microsoft.sqlserver.jdbc.SQLServerDriver

• oracle.jdbc.OracleDriver

user

String that represents the name of the database user on whose behalf the connection is being made. This is used for authentication.

password

String that represents the user's password. This is used for authentication.

Example

Here's an example of how to connect to a mySQL database and retrieve a data value.

con = db.connect('jdbc:mysql://localhost:3306/mycompany','root','admin');
statement = con.createStatement();
values = statement.executeQuery("select * from datavalue");
if (values.next())    
    values.getString("data");
else    
    'nothing';
values.close();
statement.close();
con.close();