Hi everyone,
I am quite new in applying OOD/P to CF via implementing cfcs. So here is my
problem:
I have a CFC called Order.cfc.
Within this CFC I create several DAO Objects (e.g. for related customers
instantiating the CustomerDAO.cfc)
So far so good.
Now I want all the SQL stuff from the Order.cfc out of it and put it to
OrderDAO.cfc.
So I created a new property of the Order.cfc by instantiating the
OrderDAO.cfc through the init-Method of the Order.cfc:
<cfset this.oOrderDAO = createObject("component","OrderDAO").init() />
By the getter-Method in the Order.cfc I can get access to these DAO-Objects.
<cffunction name="getOrderDAO" output="false" returntype="struct">
<cfreturn this.oOrderDAO/>
</cffunction>
Now I want to set my properties (all the variables in the this-scope) via
calling the method selectOrders() and calling the mother's method in
Order.cfc named setOrdersByStruct(queryResult) in the OrderDAO.cfc using
super.setVertragByStruct()
<cffunction access="public" name="selectVertrag" output="true">
<cfargument name="iVertragID" type="numeric"
required="true"/>
<cfquery name="variables.qSelectVertrag"
datasource="#this.sDsn#">
SELECT
*
FROM
Order
WHERE
pk_Order = #val(arguments.iOrderID)#
</cfquery>
<cfset
super.setVertragByStruct(variables.qSelectVertrag, "query")/>
</cffunction>
An other issue is that I need to get the properties (through the
getter-Methods) of the mother's cfc in the child CFC. As I know I cannot get
direct access to the this-scope in the mother CFC, so the getter-Method
fails.
How can I do apply the DAO-Pattern correctly? I heard something of a
Transfer Object that may be the golden key to solve this problem. Can
anybody explain this to me please?
Great thanks in advance for any help. I am looking forward to your replies.
Magnus Wege
____________________________________________
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Wilhelm-Hale-Str. 53 | Fax +49 89 130 145-10
D-80639 Munich | Germany
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