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Posted by FluffyCat on 01/15/06 06:01
On Sat, 14 Jan 2006 16:30:49 -0500, David Haynes
<david.haynes2@sympatico.ca> wrote:
>Gordon Burditt wrote:
>>> To add to my growing library of Design Patterns in PHP 5 I have
>>> written what I think is a good example of the Singleton Pattern.
>>>
>>> http://www.fluffycat.com/PHP-Design-Patterns/Singleton/
>>>
>>> In the classic singleton pattern an object will distribute one and
>>> only one instance of itself. This can be useful for the sharing of
>>> resources such as a single db or network connection.
>>
>> Why would one assume that there is only one instance of a database
>> connection or only one network connection? Isn't that almost as
>> bad as assuming that *THE ONLY* user presses *THE ONLY* key on
>> *THE ONLY* keyboard with *THE ONLY* finger?
>>
>> Gordon L. Burditt
>>
>Oh you're gonna hate yourself in the morning... ;-)
>
>The classic database connection singleton is to a connection pool not a
>single connection.
>
>-david-
Quite right, foolish of me to go out on a limb and get so darn and
unnecessarily specific.
The singleton pattern is (as described in GoF) "Ensure a class has
only one instance, and provide a global point of access to it".
Why you would or would not want such a thing I'll leave up to you.
-Larry Truett
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