My best attempt at a skeleton gateway for your TrimaDAO...
<cfcomponent name="TrimaGateway">
<cffunction name="init" returntype="any">
<cfset variables.trimaMachines = ArrayNew(1)>
</cffunction>
<cffunction name="getAllTrimaMachines" returntype="array">
<cfquery name="q_allTrimaMachines">
select all of your trima machines
</cfquery>
<cfscript>
for ( i=1; i lte q_allTrimaMachines; i=i+1 )
{
trimaBean = createobject("component",
"com.bloodsource.trimaBean");
trimaBean.setID( q_allTrimaMachines['id'][i] );
trimaBean.setSerialNumber(
q_allTrimaMachines['serialNumber'][i] );
trimaBean.setInService( q_allTrimaMachines['inService'][i] );
trimaBean.setOutService( q_allTrimaMachines['outService'][i] );
ArrayAppend(variables.trimaMachines, trimaBean);
}
<cfscript>
<cfreturn variables.trimaMachines>
</cffunction>
</cfcomponent>
Master Page
---------------------------
<cfset TrimaGateway = createObject("component",
"com.bloodsource.TrimaGateway").init()>
<cfset allMachines = TrimaGateway.getAllTrimaMachines()>
// Now loop through the array of trimaBeans and output the data you need
-----Original Message-----
From: Ian Skinner [mailto:[EMAIL PROTECTED]
Sent: Wednesday, May 17, 2006 3:32 PM
To: CF-Talk
Subject: RE: OOD/Design Patterns and ColdFusion.
If your not going to use a gateway Object, I would put a method in your
DAO to return a query for the master list. You could then create a bean
and populate it though each record or just output the query. I tend to
do a bit of both so I guess my apps are more OOish the straight OO. If
your going to use a gateway CFC, the gateway holds all the methods the
would return more than one row, as these cannot be returned to the
caller in a bean.
Ok, sounds good. Can someone explain a little more on what a Gateway
would be; what its purpose, a basic pseudo code example of how one might
be constructed and used? Or a good link to a resource that would help
with this?
I've heard of Gateways many times in my reading, but have yet to see a
clear example of one.
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