Use Singleton or Static Class in this example?

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howachen@gmail.com - 14 Jul 2006 17:32 GMT

Consider the following example:

E.g.

Use a class to load configuration data from database at application
startup, anywhere in the application should be able to access the
configuration information as they are needed.

This example is a classic example of using static class or singleton
plattern, isn't?

Which one you prefer ? Singleton or Static ?

Thanks...

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Danno - 14 Jul 2006 17:42 GMT

> Consider the following example:
>
[quoted text clipped - 10 lines]
>
> Thanks...

For something like that I would need to look at what is being built
around it... Is it a desktop app, a web app, a service? What is the
purpose of the app? What existing technologies does it depend on, etc.

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howachen@gmail.com - 14 Jul 2006 17:50 GMT

Danno

> > Consider the following example:
> >
[quoted text clipped - 14 lines]
> around it... Is it a desktop app, a web app, a service? What is the
> purpose of the app? What existing technologies does it depend on, etc.

will you have different choice if they are built on different platform?
such as web or desktop? why?

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Danno - 14 Jul 2006 18:51 GMT

> Danno
>
[quoted text clipped - 19 lines]
> will you have different choice if they are built on different platform?
> such as web or desktop? why?

Well for example, when creating a web app, loading configuration can
come during servlet context setup using a context listener and from
there I would bind those values to an application context. I have to
say that that is not the only way. In a desktop app, I would probably
have to do some sort of distributed programming solution or just call
the database directly. If its also a desktop solution I would like to
know if the configuration files are like a map (key, value) structure,
or they are complex relational objects.

Lots to consider.

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Use Singleton or Static Class in this example?

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