javax.sql.DataSource/myDataSource = (osgi.jndi.service.name=jdbc/myDataSource)
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
Context context = new InitialContext();
DataSource dataSource = (DataSource) context.lookup("osgi:service/javax.sql.DataSource/myDataSource");
Connection connection = dataSource.getConnection();
// ...