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Posted by Michael G on 11/15/16 11:22
"Michael G" <mike-g@montana.com> wrote in message
news:42e6a0f3$1_1@spool9-west.superfeed.net...
>
> "Jacob Atzen" <jacob@aub.dk> wrote in message
> news:slrndecvlr.a1s.jacob@tank.aub.dk...
>> On 2005-07-26, Michael G <mike-g@montana.com> wrote:
>>> I want to use a factory pattern to create a variety of objects. Which
>>> object
>>> gets created depends on a string that is passed to the factory create
>>> method. I would like to avoid using an if or switch construct to
>>> accomplish
>>> this but not sure how. For example,
>>>
>>> ...
>>>
>>> if($nextObject == "login")
>>> {
>>> return new Login();
>>> }
>>> else if($nextObject == "validatedata")
>>> {
>>> return new Validate(aString);
>>> }
>>>
>>> ...
>>> Is there any way to avoid this?
>>
>> You could do:
>>
>> function create($className) {
>> return new $className;
>> }
>>
>> Not sure if it's a better solution though.
>>
>
> That's not a bad idea. It would eliminate the need for an array of
> strings.
Just a note, some languages would not allow that. That makes me a bit
uncomfortable. They would require an explicit open/closed paran at a
minimum.
Mike
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