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

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ram@zedat.fu-berlin.de (Stefan Ram) writes:

> Cecil Westerhof <Cecil@decebal.nl> writes:
>>public SQLite3 (String database) throws SQLException {
>>    super(database);
>>}
>>Is this the correct way to do this, or is there a better way?
>
>   There is no »correct« in this case. There are different
>   possibilities. But the choice between them depends on the
>   use expected, and you know best how you expect the classes
>   to be used.

In a way I do not. ;-) I am writing it as an exercise and to make live
a little easier for myself. But I am thinking about sharing it, so it
can be used in a lot of ways.

For example: I will ‘always’ use the database connection for the whole
run of my program, but I made the class AutoCloseable, so it can also
be used in a try with resources, even if I do not use it that way.


>   You are using the Template Method pattern to provide
>   arguments to an abstract superclass, but you just fill in
>   string values, not operations with behavior, so you could
>   have a single class that takes the database, the package and
>   the driver path as arguments as well. Or, if you want to
>   factor out the package and driver:

At the moment I only implemented SQLite3. But this has the methods:
    getSQLiteVersion
    isDBLocked

And the fields:
    GET_SQLITE_VERS
    SQLITE_BUSY
    UNEXPECTED_ERROR

Also I do not want have to give the driver path.

So for the moment I stick with what I have got.


I probably should rename getSQLiteVersion to getDBVersion, because
probably other drivers will have the same functionality.

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

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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

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