>
> Figured I should post the "flow" that leads to this
>
In Application.cfc I have
<cffunction name="onSessionEnd" output="false">
<cfargument name="sessionScope" type="struct" required="true">
<cfargument name="appScope" type="struct" required="false">
<cfset invokeSessionEvent("modelglue.onSessionEnd", arguments.sessionScope,
appScope) />
</cffunction>
<cffunction name="invokeSessionEvent" output="false" access="private">
<cfargument name="eventName" />
<cfargument name="sessionScope" />
<cfargument name="appScope" />
<cfset var mgInstances = createObject("component",
"ModelGlue.Util.ModelGlueFrameworkLocator").findInScope(appScope) />
<cfset var values = structNew() />
<cfset var i = "" />
<cfset values.sessionScope = arguments.sessionScope />
<cfloop from="1" to="#arrayLen(mgInstances)#" index="i">
<cfset mgInstances[i].executeEvent(arguments.eventName, values) />
</cfloop>
</cffunction>
ModelGlueFrameworkLocator then has....
<cffunction name="findInScope" output="false" returntype="array"
hint="Finds all or specific instances of Model-Glue within a given scope
(or any struct, for that matter).">
<cfargument name="scope" type="struct" required="true" />
<cfargument name="scopeKey" type="string" required="false" />
<cfset var key = "" />
<cfset var mgInstance = "" />
<cfset var result = arrayNew(1) />
<!--- Find ModelGlue instances in the application scope. --->
<cfloop collection="#scope#" item="key">
<cfif isObject(scope[key]) and isTypeOf( "ModelGlue.gesture.ModelGlue",
scope[key] )>
<cfif not structKeyExists(arguments, "scopeKey") or arguments.scopeKey eq
key>
<cfset arrayAppend(result, scope[key]) />
</cfif>
</cfif>
</cfloop>
<cfreturn result />
</cffunction>
<!--- This could be refactored for isInstanceOf once we drop CF7 support.
--->
<cffunction name="isTypeOf" output="false" access="public" returntype="any"
hint="I check to see if this component extends another component somewhere
in the inheritance chain">
<cfargument name="type" type="string" required="true"/>
<cfargument name="instance" type="any" required="true"/>
<cfset var componentMetadata = getMetadata( arguments.instance ) />
<cfset var scope = componentMetadata.extends />
<!--- Maybe the component is the component we want --->
<cfif listFindNoCase( "#arguments.type#,#scope.name#",
componentMetadata.name ) GT 0>
<cfreturn true />
</cfif>
<!--- Ok, maybe it extends the component we want, so we'll rip over the
metadata until we either find it, or hit the end of the road --->
<cfloop condition="true">
<!--- Check to see if this go-round has what we are looking for --->
<cfif scope.name IS arguments.type>
<cfreturn true />
<!--- Put the defensive position here so we don't spiral out of control. No
more EXTENDS structs means the end of the inheritance tree --->
<cfelseif structKeyExists( scope, "extends") IS false>
<cfreturn false />
</cfif>
<!--- Set the scope to the next struct and let's spin the wheel again --->
<cfset scope = scope.extends />
</cfloop>
</cffunction>
So I guess the real question is why wouldn't getMetadata(
arguments.instance ) have an "extends"? Adobe says "Metadata for the
component’s ancestor component. Components that do not explicitly extend
another component extend the WEB-INF.cftags.component."
--
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