Re: [CFCDev] Coldspring vs. Factory

Chris Scott Mon, 19 Dec 2005 06:16:47 -0800

I kind of just said this, sorry for the repeated comments, but the major difference is the ColdSpring example is Declarative. I don't want to beat a dead horse here, but defining dependencies, services, aspects, etc, declaratively is a major major point to consider here.

On Dec 19, 2005, at 7:29 AM, Baz wrote:

Hey Sean,

Thanks for the info.

I read D.Ross's article (good article by the way) and it seems that my factory is a little bit different than the factories described. Ross mentions as a limitation of using factories:

"what if I have a DAOFactory, which is responsible for creating/configuring 10 different DAOs, and one day I decide that the dsn which DAO #7 needs a different dsn than all the others. You are now going in your factory to add a special case..."

My factory is only a list of special cases. There is a separate create method for every CFC. This is what it looks like:


<cffunction name="load" access="public" returntype="any">
   <cfargument name="ObjectName" type="string" required="yes" />

   <cfset var ObjectInstance="" />
   <cfinvoke
                method="create#arguments.ObjectName#"
                returnVariable="ObjectInstance" />

   <cfreturn ObjectInstance />
</cffunction>


<cffunction name="createPermGW" access="private" returntype="PermGW">
   <cfset var Obj=createobject('#this.CFCMapping#.PermGW')
                .init(this.Database.System, this.SystemUtils) />
   <cfreturn Object />
</cffunction>


<cffunction name="createUser" access="private" returntype="User">
   <cfset var Obj=createobject('#this.CFCMapping#.User')
                .init(load('SystemMSG'), load('UserDAO')) />
   <cfreturn Object />
</cffunction>

What’s the major difference between that and the Coldspring XML:


<bean id="User" class="CFC.Perm">
   <property name="DSNInfo">
      <ref bean="DSNInfo " />
   </property>
   <property name="SystemUtils">
      <ref bean="SystemUtils " />
   </property>
</bean>


<bean id="User" class="CFC.User">
   <property name="SystemMSG">
      <ref bean="SystemMSG " />
   </property>
   <property name="UserDAO">
      <ref bean="UserDAO " />
   </property>
</bean>

Cheers,
Baz

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Sean Corfield
Sent: Sunday, December 18, 2005 5:52 AM
To: [email protected]
Subject: Re: [CFCDev] Coldspring vs. Factory

On 12/17/05, Baz <[EMAIL PROTECTED]> wrote:
> What are the advantages of using Coldspring over having a central Factory
> CFC? Is the factory not an equivalent counterpart to the Coldspring XML
> file?

I think Dave Ross answered that question on this list just the other
day - and also posted to his blog:

http://d-ross.org/index.cfm?objectid=2EC8FF78-EF49-4E45-CDFEF2DA7F393A25

Does that not answer your question?
--
Sean A Corfield -- http://corfield.org/
Got frameworks?

"If you're not annoying somebody, you're not really alive."
-- Margaret Atwood

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Re: [CFCDev] Coldspring vs. Factory

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