Object Factory

ObjectFactory.cfc

<cfcomponent output="false" hint="Object Factory for Singleton instantiation">
	
	<!--- cleanup cache will only be called on every 500th call to the get function (will rehash the table) --->
	<cfset this.currentCacheInterval = 1 />
	<cfset this.cacheClearIntervalInMinutes = 180 />
	
	<cffunction name="init">
		<cfargument name="isDebug" type="boolean" required="false"  hint="pass in true to reload every time" default="false" />
		<cfscript>
			setCacheTime();
			// ObjectCache is a Java Hashtable: http://docs.oracle.com/javase/1.4.2/docs/api/java/util/Hashtable.html
			Application.ObjectCache = CreateObject("java","java.util.Hashtable").Init();
			this.isDebug = arguments.isDebug;
			return this;
		</cfscript>
	</cffunction>
	
	
	<cffunction name="get" returnType="any" access="public" hint="gets an object singleton out of the hashtable cache">
		<cfargument name="object" type="string" required="true"  hint="the object name"/>
		<cfargument name="initArguments" type="struct" required="false" default="#StructNew()#" hint="the arguments to use to init the object"/>
		<cfargument name="reload" type="boolean" required="false" default="false" hint="pass in true to reload the object in the cache"/>
		<cfargument name="clear" type="boolean" required="false"  hint="pass in true to clear the entire cache" default="false" />
		
		<cfscript>
			var loc = arguments;
			loc.key = loc.object;
			loc.defined = Application.ObjectCache.Get(loc.key);

			if(loc.clear){
				Application.ObjectCache.Clear();
			}
			
			// ObjectCache is a Java Hashtable: see top
			
			if (isDefined("loc.defined") && !loc.reload && !this.isDebug){
				return loc.defined;
			}else{
				loc.obj = CreateObject("Component", "#loc.object#").init(argumentCollection=loc.initArguments);
				Application.ObjectCache.Put(loc.key, loc.obj);
				return loc.obj;
			}
			
		</cfscript>
		
		
	</cffunction>
	
	
	
	<cffunction name="setCacheTime" returnType="void" access="private" hint="resets the cache time">
		<cfset this.cacheTime = Now() />
		<cfset this.expireTime = DateAdd("n", this.cacheClearIntervalInMinutes, this.cacheTime)/>
		
	</cffunction>
	
</cfcomponent>