<!--- Check to see if our test refernce object has been created. If not, we will need to create and cached it. ---> <cfif NOT StructKeyExists( APPLICATION, "Reference" )> <!--- Let's create a simple struct. ---> <cfset objGirl = { FirstName = "Winona", LastName = "Ryder" } /> <!--- Now, let's create a soft reference to that object and cache that in the APPLICATION scope. No other references to it are going to exist, so there will be no hard references that force it to remain in memory. ---> <cfset APPLICATION.Reference = CreateObject( "java", "java.lang.ref.SoftReference" ).Init( objGirl ) /> <!--- Log the creation. ---> <cfset ArrayAppend( APPLICATION.Log, "#TimeFormat( Now(), 'hh:mm:ss' )# - Reference Created." ) /> </cfif> <!--- At this point, we have our soft reference in the APPLICATION scope, but there is not saying whether or not the object will still be there. We need to get the value and see if it returns null. I am scoping the return value so that we can see if the key exists after our Get(). ---> <cfset REQUEST.Girl = APPLICATION.Reference.Get() /> <!--- Check to see if Girl exists. If it does, then we got the object. If it does not, then the object in question has been cleaned up. ---> <cfif StructKeyExists( REQUEST, "Girl" )> <!--- It exists. Log message. ---> <cfset ArrayAppend( APPLICATION.Log, ( "#TimeFormat( Now(), 'hh:mm:ss' )# - Exists - " & REQUEST.GirL.FirstName )) /> <cfelse> <!--- It no longer exists. Log message. ---> <cfset ArrayAppend( APPLICATION.Log, "#TimeFormat( Now(), 'hh:mm:ss' )# - Does NOT Exist." ) /> </cfif> <!--- Check to see if we want to run the garbage collection. ---> <cfif (RandRange( 1, 5 ) EQ 3)> <!--- Get a reference to the runtime. ---> <cfset objRuntime = CreateObject( "java", "java.lang.Runtime" ).GetRuntime() /> <!--- Call garbage collection. ---> <cfset objRuntime.GC() /> <!--- Log message. ---> <cfset ArrayAppend( APPLICATION.Log, "#TimeFormat( Now(), 'hh:mm:ss' )# - Garbage Collection." ) /> </cfif> <cfoutput> <h3> Application Log </h3> <!--- Output application log entries. ---> <cfloop index="strMessage" array="#APPLICATION.Log#"> #strMessage#<br /> </cfloop> </cfoutput>