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Bill mentioned this as well, but you’ve
got to think about things differently. For example think about this line: <cfset
variables.Object=createobject(MyCFC) /> More like this: The component instance is created “in
space” – it doesn’t exist in the variables scope. Then
after it’s created a pointer (reference) is made to it in the variables
scope. But it doesn’t exist there. Later that pointer is copied
to the Session scope. The instance still lives “in space” but
is now linked from two places (the variables scope and the session scope). The request ends. The pointer
contained in the variables scope is gone, but the instance still exists and so
does the pointer to it in the session scope. Another template can use
that reference as long as it exists in the scope. Later however the session times out.
The point in the session scope is gone but the instance STILL EXISTS (“in
space”). However there are no pointers which link to it – and
so nothing can use it. This instance is now “garbage” and the
system will soon run it’s “garbage collection” process which
examines all instances and decides which are in use (have pointers to them) and
which don’t (the garbage ones). Garbage instances are then
destroyed to make room for more stuff. So you see the object instance never was
in the “variables scope” (or anything other scope for that
matter). It exists outside the developer accessible scopes completely –
only pointers live where the developer can “see” them. Jim Davis You are subscribed to cfcdev. To unsubscribe, send an email to [email protected] with the words 'unsubscribe cfcdev' as the subject of the email. CFCDev is run by CFCZone (www.cfczone.org) and supported by CFXHosting (www.cfxhosting.com). An archive of the CFCDev list is available at www.mail-archive.com/[email protected] ---------------------------------------------------------- You are subscribed to cfcdev. To unsubscribe, send an email to [email protected] with the words 'unsubscribe cfcdev' as the subject of the email. CFCDev is run by CFCZone (www.cfczone.org) and supported by CFXHosting (www.cfxhosting.com). An archive of the CFCDev list is available at www.mail-archive.com/[email protected] |
- RE: [CFCDev] CFC By Reference Jim Davis
