package de.swingbe.postgres_java;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

public class JavaPostgreSqlPrepared {

    public static void main(String[] args) {

        //connection URL for the postgres database
        //jdbc:postgresql://<host>:<port>/<database name>
        String url = "jdbc:postgresql://localhost:5432/testdb";

        String user = "usr";
        String password = "#password";

        //add new author to author's table
        int id = 6;
        String author = "Trygve Gulbranssen";
        String query = "INSERT INTO authors(id, name) VALUES(?, ?)";

        //create prepared statement using placeholders instead of directly writing values
        try (Connection con = DriverManager.getConnection(url, user, password); PreparedStatement pst = con.prepareStatement(query)) {

            //bound integer to placeholder
            pst.setInt(1, id);

            //bound string to placeholder
            pst.setString(2, author);

            //execute statement with executeUpdate method if you do not expect any data to be returned
            pst.executeUpdate();

        } catch (SQLException ex) {

            Logger lgr = Logger.getLogger(JavaPostgreSqlPrepared.class.getName());
            lgr.log(Level.SEVERE, ex.getMessage(), ex);
        }
    }
}