Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.java.programmer > #37152

Is this a correct implementation of an abstract class and implementation class

From Cecil Westerhof <Cecil@decebal.nl>
Newsgroups comp.lang.java.programmer
Subject Is this a correct implementation of an abstract class and implementation class
Date 2017-08-12 23:20 +0200
Organization Decebal Computing
Message-ID <87r2wgxz2p.fsf@munus.decebal.nl> (permalink)

Show all headers | View raw


I want to write a layer around JDBC. For this I have an abstract class
SQL in which I have the following constructor and abstract methods:
    // ################ constructors
    public SQL (String database) throws SQLException {
        String forName   = getForName();
        String sqlDriver = getSQLDriver();

        try {
            Class.forName(forName);
        } catch (ClassNotFoundException e) {
            throw new SQLException("Could not find the class " + forName + ".");
        }
        conn = DriverManager.getConnection(sqlDriver + database);
        this.database = database;
    }

    // ################ abstract
    abstract String getForName();
    abstract String getSQLDriver();


I have also an implementation class SQLite3 in which I have:
    // ################ constructors
    public SQLite3 (String database) throws SQLException {
        super(database);
    }

    // ################ default
    @Override
    String getForName() {
        return "org.sqlite.JDBC";
    }

    @Override
    String getSQLDriver() {
        return "jdbc:sqlite:";
    }

Is this the correct way to do this, or is there a better way?

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

Back to comp.lang.java.programmer | Previous | Next — Next in thread | Find similar | Unroll thread


Thread

Is this a correct implementation of an abstract class and implementation class Cecil Westerhof <Cecil@decebal.nl> - 2017-08-12 23:20 +0200
  Re: Is this a correct implementation of an abstract class and implementation class Arne Vajhøj <arne@vajhoej.dk> - 2017-08-12 22:00 -0400
    Re: Is this a correct implementation of an abstract class and implementation class Cecil Westerhof <Cecil@decebal.nl> - 2017-08-13 07:14 +0200
    Re: Is this a correct implementation of an abstract class and implementation class Andreas Leitgeb <avl@logic.at> - 2017-08-13 09:37 +0000
      Re: Is this a correct implementation of an abstract class and implementation class Andreas Leitgeb <avl@logic.at> - 2017-08-13 10:13 +0000
        Re: Is this a correct implementation of an abstract class and implementation class Arne Vajhøj <arne@vajhoej.dk> - 2017-08-13 16:27 -0400
      Re: Is this a correct implementation of an abstract class and implementation class lewbloch@gmail.com - 2017-08-13 09:49 -0700
      Re: Is this a correct implementation of an abstract class and implementation class Arne Vajhøj <arne@vajhoej.dk> - 2017-08-13 16:25 -0400
  Re: Is this a correct implementation of an abstract class and implementation class Cecil Westerhof <Cecil@decebal.nl> - 2017-08-13 07:33 +0200

csiph-web