StructClear
Does StructClear reset keys in a structure to be blank, or does it remove the keys? Also, what's a function to get rid of a structure altogether? Thank you -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
structclear
I thought I had read that this line of code no longer works well in 4.5, is this true? Is there a better alternative? Should I be surrounding this with ? Won Lee Systems Consultant New Channel Technologies (330) 220-1558 [EMAIL PROTECTED] "Turning ideas into e-Business" Premier Partner -- Archives: http://www.eGroups.com/list/cf-talk To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
Re: StructClear
StructClear destroys struct keys. As for deleting structures altogether, I'm not sure. Surely there's got to be a way to unset variables, right? -- Jamie Keane Programmer SolutionMasters, Inc. 9111 Monroe Rd., Suite 100 Charlotte, NC 28270 www.solutionmasters.com 704.563.5559 x 228 Voice 704.849.9291 Fax -Original Message- From: Stas Newdel <[EMAIL PROTECTED]> To: CFTalk <[EMAIL PROTECTED]> Date: Friday, September 01, 2000 3:44 AM Subject: StructClear >Does StructClear reset keys in a structure to be blank, or does it remove >the keys? Also, what's a function to get rid of a structure altogether? > >Thank you > > >--- --- >Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ >To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body. -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
RE: StructClear
> Does StructClear reset keys in a structure to be blank, or > does it remove the keys? It removes keys and values. > Also, what's a function to get rid of a structure altogether? I don't think there is one. You could overwrite a structure with a simple value: ... One of the nice things about CF is that you don't have to expend much effort usually to clean up your variables; they'll only last until the page has been fully executed if they're local variables. If they're in Session or Application scope, those are themselves structures, so you can use StructDelete to get rid of your structure: ... Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ voice: (202) 797-5496 fax: (202) 797-5444 -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
RE: StructClear
Stas- The StructClear() function completely empties a structure; keys and everything. Let's extend this for a second. Take the following situation: A structure with 2 keys, right? Now, you can clear this structure one of two ways: There is an important distinction, however. Remember that structures are passed (and assigned) by reference. So, let's assume that foo still has some data in it, and let's add the following scenario: Now, whether you use StructClear() or StructNew() actually matters! This is because brick and foo now point to the *same data*. Not copies of the data, but the same data. To show this, you could now do: #foo.bat# This is perfectly valid. So, as you can see, StructClear() and StructNew() will now do two very different things. If you use StructClear(): Then you are acting on the reference, you will therefore be clearing out the brick structure while you are at it: #StructCount(brick)# But, it we back up and use StructNew() instead: Then we are now simply overwriting foo's copy of the reference. So foo gets a new structure and brick stays intact: #StructCount(brick)# #StructCount(foo)# In this way, you can see that assigning to foo does not affect brick, but using functions that work on foo will affect brick (because the functions take a copy of the reference, while assigning overwrites the reference with a new one). So, to answer your second function, you can clear a structure any way you want: This distinction actually has several uses, but it's a bit tricky if you aren't wary of it. I've helped many a CF programmer who were tearing their hair out because they had used one instead of the other. :) HTH, Rick -Original Message- From: Stas Newdel [mailto:[EMAIL PROTECTED]] Sent: Thursday, August 31, 2000 5:45 PM To: CFTalk Subject: StructClear Does StructClear reset keys in a structure to be blank, or does it remove the keys? Also, what's a function to get rid of a structure altogether? Thank you -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body. -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
RE: StructClear
StructDelete(structure, key) :) If you wanted to clear the structe you COULD And you are left with a mere shell of the structure you once had :) Or you can use StructClear which clears out the *data* only. Jeremy -Original Message- From: Jamie Keane [mailto:[EMAIL PROTECTED]] Sent: Friday, September 01, 2000 11:02 AM To: [EMAIL PROTECTED] Subject: Re: StructClear StructClear destroys struct keys. As for deleting structures altogether, I'm not sure. Surely there's got to be a way to unset variables, right? -- Jamie Keane Programmer SolutionMasters, Inc. 9111 Monroe Rd., Suite 100 Charlotte, NC 28270 www.solutionmasters.com 704.563.5559 x 228 Voice 704.849.9291 Fax -Original Message- From: Stas Newdel <[EMAIL PROTECTED]> To: CFTalk <[EMAIL PROTECTED]> Date: Friday, September 01, 2000 3:44 AM Subject: StructClear >Does StructClear reset keys in a structure to be blank, or does it remove >the keys? Also, what's a function to get rid of a structure altogether? > >Thank you > > >--- --- >Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ >To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body. -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body. -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
RE: StructClear
Not quite true. Just ran a test and StructClear deletes the keys just like
your loop does. Here is code you stick on any template to try:
<CFSET myStruct = StructNew()>
<CFSET myStruct.data = "somedata">
alert("#IsDefined('myStruct.data')#");
<CFSET StructClear(myStruct)>
alert("#IsDefined('myStruct.data')#");
I used js because I threw this in to a fusebox app I was working on and
alerts don't mess up how the page looks.
Justin Kidman
-Original Message-
From: Jeremy Allen [mailto:[EMAIL PROTECTED]]
Sent: Friday, September 01, 2000 9:49 AM
To: [EMAIL PROTECTED]
Subject: RE: StructClear
StructDelete(structure, key) :)
If you wanted to clear the structe you COULD
And you are left with a mere shell of
the structure you once had :)
Or you can use StructClear which clears
out the *data* only.
Jeremy
-Original Message-
From: Jamie Keane [mailto:[EMAIL PROTECTED]]
Sent: Friday, September 01, 2000 11:02 AM
To: [EMAIL PROTECTED]
Subject: Re: StructClear
StructClear destroys struct keys. As for deleting structures altogether,
I'm not sure. Surely there's got to be a way to unset variables, right?
--
Jamie Keane
Programmer
SolutionMasters, Inc.
9111 Monroe Rd., Suite 100
Charlotte, NC 28270
www.solutionmasters.com
704.563.5559 x 228 Voice
704.849.9291 Fax
-Original Message-
From: Stas Newdel <[EMAIL PROTECTED]>
To: CFTalk <[EMAIL PROTECTED]>
Date: Friday, September 01, 2000 3:44 AM
Subject: StructClear
>Does StructClear reset keys in a structure to be blank, or does it remove
>the keys? Also, what's a function to get rid of a structure altogether?
>
>Thank you
>
>
>---
---
>Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
>To Unsubscribe visit
http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or
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the body.
--
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RE: StructClear
Just as a cool point to bring up. This is what you would consider passing by reference. Since one object merely references something else and does nto actually copy the data and get its own set of data (passing by value). So, this opens up some interesting possibilities. Namely custom data structures among other things. I am kind of glad allaire did this however.. I do think it tends to confuse msot people since I cant think of any other data type in CF that behaves the way structures do. CF sucks with recursion still and I would be very afraid to use custom tags to manipulate a custom data structure built using this method.. (Such as a Stack of Queue) perhaps.. was there not a CFDJ article talking about this? I cant imagine this being overly useful to your average CF developer, But I guess in some cases this proves to be truly useful. Jeremy Allen [EMAIL PROTECTED] Insert Quarter Here >[ ]< -Original Message- From: Rick Osborne [mailto:[EMAIL PROTECTED]] Sent: Friday, September 01, 2000 12:56 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: RE: StructClear Stas- The StructClear() function completely empties a structure; keys and everything. Let's extend this for a second. Take the following situation: A structure with 2 keys, right? Now, you can clear this structure one of two ways: There is an important distinction, however. Remember that structures are passed (and assigned) by reference. So, let's assume that foo still has some data in it, and let's add the following scenario: Now, whether you use StructClear() or StructNew() actually matters! This is because brick and foo now point to the *same data*. Not copies of the data, but the same data. To show this, you could now do: #foo.bat# This is perfectly valid. So, as you can see, StructClear() and StructNew() will now do two very different things. If you use StructClear(): Then you are acting on the reference, you will therefore be clearing out the brick structure while you are at it: #StructCount(brick)# But, it we back up and use StructNew() instead: Then we are now simply overwriting foo's copy of the reference. So foo gets a new structure and brick stays intact: #StructCount(brick)# #StructCount(foo)# In this way, you can see that assigning to foo does not affect brick, but using functions that work on foo will affect brick (because the functions take a copy of the reference, while assigning overwrites the reference with a new one). So, to answer your second function, you can clear a structure any way you want: This distinction actually has several uses, but it's a bit tricky if you aren't wary of it. I've helped many a CF programmer who were tearing their hair out because they had used one instead of the other. :) HTH, Rick -Original Message- From: Stas Newdel [mailto:[EMAIL PROTECTED]] Sent: Thursday, August 31, 2000 5:45 PM To: CFTalk Subject: StructClear Does StructClear reset keys in a structure to be blank, or does it remove the keys? Also, what's a function to get rid of a structure altogether? Thank you -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body. -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body. -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
RE: StructClear
> StructDelete(structure, key) :) > > If you wanted to clear the structe you COULD > > > > > > And you are left with a mere shell of > the structure you once had :) > > Or you can use StructClear which clears > out the *data* only. Looping over the structure and deleting each member with StructDelete will be equivalent to using StructClear, which deletes all keys and values from within the structure. CF doesn't have a way of representing uninitialized variables - variables without values. Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ voice: (202) 797-5496 fax: (202) 797-5444 -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
RE: StructClear
This is not true. :) The StructClear() function does the exact same thing your loop does - it completely empties the structure of both keys and values (data). Don't believe me? Try it: #StructCount(Bag)# #StructCount(Bag)# You will get the following result: 100 0 -Rick -Original Message- From: Jeremy Allen [mailto:[EMAIL PROTECTED]] Sent: Friday, September 01, 2000 12:49 PM To: [EMAIL PROTECTED] Subject: RE: StructClear StructDelete(structure, key) :) If you wanted to clear the structe you COULD And you are left with a mere shell of the structure you once had :) Or you can use StructClear which clears out the *data* only. Jeremy -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
RE: StructClear
Just 'cause I'm on a run of disagreeing with Jeremy today ... ;) Jeremy Allen said: >Since one object merely references something else and does nto >actually copy the data and get its own set of data >So, this opens up some interesting possibilities. >Namely custom data structures among other things. >CF sucks with recursion still and I would be very afraid to >use custom tags to manipulate a custom data structure built >using this method.. >I cant imagine this being overly useful to your average CF >developer, But I guess in some cases this proves to be >truly useful. Most definitely. For the last project I was on this proved to be *obscenely* useful. We essentially ended up loading the entire database (some 50+ tables from a nice relational DB in 3rd normal form) into memory, not as queries, but as structures, arrays, lists, etc. (Okay, so we had the occasional query stored in memory, too.) We basically denormalized the data, in memory, for maximum speed. Everything started at the Application scope and just worked its way down through about a dozen layers at its deepest point. Using this, we got it down to where we could do massive reports and use dozens of dynamic objects per page and not have to do a single database call. It was lightning fast, and that was one of the major reasons. The entire system was (is) strictly CFMODULE-based, and everything only knows its little piece of the system and doesn't mess with anyone else's. We would pass in a reference to a branch in the main tree (structure) and that was all that the module would know about. It wouldn't care where that branch actually came from or where it was going, it just needed that data. Locking was easy because the module would only have to lock that branch if it was going to modify it, and since each module only modified it's piece of the system you never had to worry about one module modifying another module's data. We essentially combined all the best aspects of CFObject and Fusebox without any of the baggage. (And, truth be told, the project was started before either of those things existed.) Without references, I don't even know if that would be possible. If it would be, I certainly wouldn't want to maintain the code for it. And, as my parting blow: it's not CF that sucks with recursion, it's the programmer. I've *never* had a problem with recursion (well, none that wasn't immediately obvious as a "doh!") and I've used it quite a bit. (I've said it before and I'll say it again! :) -Rick -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
StructClear(session)
After I do a StructClear(Session) the Session.URLToken that I have added to links also get cleared out and I get a message that Session.URLToken can't be found. How do I prevent it from doing it that? Thanks Sebastian __ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: structclear
It works, but too well. It also clears out session vars that ColdFusion uses to track you. You should either use StructDelete to remove individual variables, or simply store all of your stuff in a substructure, like Session.MyVars. Then you can call StructClear on that structure w/o any worries. === Raymond Camden, Webmaster of the Death Clock (www.deathclock.com) Cold Fusion Jedi Master for Syntegra (www.syntegra.com) Allaire Certified Instructor and Member of Team Allaire Email : [EMAIL PROTECTED] ICQ UIN : 3679482 "My ally is the Force, and a powerful ally it is." - Yoda > -Original Message- > From: Won Lee [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 03, 2000 9:51 AM > To: cf-talk (E-mail) > Subject: structclear > > > > I thought I had read that this line of code no longer works well > in 4.5, is > this true? > > > > > > Is there a better alternative? Should I be surrounding this with > ? > > Won Lee > Systems Consultant > New Channel Technologies > (330) 220-1558 > [EMAIL PROTECTED] > > "Turning ideas into e-Business" > Premier Partner > > -- > > Archives: http://www.eGroups.com/list/cf-talk > To Unsubscribe visit > http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf > _talk or send a message to [EMAIL PROTECTED] with > 'unsubscribe' in the body. -- Archives: http://www.eGroups.com/list/cf-talk To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
RE: structclear
This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --_=_NextPart_001_01BF9D84.2235BDF0 Content-Type: text/plain; charset="windows-1252" You mean it will clear client variables as well? I use that line of code for logout function. I think you were the person that also recommended that one put a around tags that manipulate session variables...should it be done in this case as well? -Original Message- From: Raymond K. Camden [mailto:[EMAIL PROTECTED]] Sent: Monday, April 03, 2000 11:14 AM To: [EMAIL PROTECTED] Subject: RE: structclear It works, but too well. It also clears out session vars that ColdFusion uses to track you. You should either use StructDelete to remove individual variables, or simply store all of your stuff in a substructure, like Session.MyVars. Then you can call StructClear on that structure w/o any worries. === Raymond Camden, Webmaster of the Death Clock (www.deathclock.com) Cold Fusion Jedi Master for Syntegra (www.syntegra.com) Allaire Certified Instructor and Member of Team Allaire Email : [EMAIL PROTECTED] ICQ UIN : 3679482 "My ally is the Force, and a powerful ally it is." - Yoda > -Original Message- > From: Won Lee [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 03, 2000 9:51 AM > To: cf-talk (E-mail) > Subject: structclear > > > > I thought I had read that this line of code no longer works well > in 4.5, is > this true? > > > > > > Is there a better alternative? Should I be surrounding this with > ? > > Won Lee > Systems Consultant > New Channel Technologies > (330) 220-1558 > [EMAIL PROTECTED] > > "Turning ideas into e-Business" > Premier Partner > > -- > > Archives: http://www.eGroups.com/list/cf-talk > To Unsubscribe visit > http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf > _talk or send a message to [EMAIL PROTECTED] with > 'unsubscribe' in the body. -- Archives: http://www.eGroups.com/list/cf-talk To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body. --_=_NextPart_001_01BF9D84.2235BDF0 Content-Type: text/html; charset="windows-1252" Content-Transfer-Encoding: quoted-printable RE: structclear You mean it will clear client variables as = well? I use that line of code for logout function. I think you were the person that also recommended = that one put a <cflock> around tags that manipulate session = variables...should it be done in this case as well? -Original Message----- From: Raymond K. Camden [mailto:[EMAIL PROTECTED]">mailto:raymond.k.camden@sy= ntegra.com] Sent: Monday, April 03, 2000 11:14 AM To: [EMAIL PROTECTED] Subject: RE: structclear It works, but too well. It also clears out session = vars that ColdFusion uses to track you. You should either use StructDelete to = remove individual variables, or simply store all of your stuff in a = substructure, like Session.MyVars. Then you can call StructClear on = that structure w/o any worries. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Raymond Camden, Webmaster of the Death Clock = (www.deathclock.com) Cold Fusion Jedi Master for Syntegra = (www.syntegra.com) Allaire Certified Instructor and Member of Team = Allaire Email : [EMAIL PROTECTED] ICQ UIN : 3679482 "My ally is the Force, and a powerful ally it = is." - Yoda > -Original Message- > From: Won Lee [mailto:[EMAIL PROTECTED]">mailto:[EMAIL PROTECTED]] > Sent: Monday, April 03, 2000 9:51 AM > To: cf-talk (E-mail) > Subject: structclear > > > > I thought I had read that this line of code no = longer works well > in 4.5, is > this true? > > > <cfset StructClear(session)> > > > Is there a better alternative? Should I = be surrounding this with > <cflock>? > > Won Lee > Systems Consultant > New Channel Technologies > (330) 220-1558 > [EMAIL PROTECTED] > > "Turning ideas into = e-Business" > <allaire> Premier Partner > > = -- > > Archives: http://www.eGroups.com/list/cf-talk" = TARGET=3D"_blank">http://www.eGroups.com/list/cf-talk > To Unsubscribe visit > http://www.hous
RE: structclear
It will not clear client vars, that's a different scope. And yes, you should use CFLOCK in the case I described below. To be 100% safe, you should -always- use CFLOCK. === Raymond Camden, Webmaster of the Death Clock (www.deathclock.com) Cold Fusion Jedi Master for Syntegra (www.syntegra.com) Allaire Certified Instructor and Member of Team Allaire Email : [EMAIL PROTECTED] ICQ UIN : 3679482 "My ally is the Force, and a powerful ally it is." - Yoda > -Original Message- > From: Won Lee [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 03, 2000 11:49 AM > To: '[EMAIL PROTECTED]' > Subject: RE: structclear > > > This message is in MIME format. Since your mail reader does not understand > this format, some or all of this message may not be legible. > > --_=_NextPart_001_01BF9D84.2235BDF0 > Content-Type: text/plain; > charset="windows-1252" > > You mean it will clear client variables as well? I use that line of code > for logout function. > > I think you were the person that also recommended that one put a > around tags that manipulate session variables...should it be done in this > case as well? > > -Original Message- > From: Raymond K. Camden [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 03, 2000 11:14 AM > To: [EMAIL PROTECTED] > Subject: RE: structclear > > > It works, but too well. It also clears out session vars that > ColdFusion uses > to track you. You should either use StructDelete to remove individual > variables, or simply store all of your stuff in a substructure, like > Session.MyVars. Then you can call StructClear on that structure w/o any > worries. > > === > Raymond Camden, Webmaster of the Death Clock (www.deathclock.com) > Cold Fusion Jedi Master for Syntegra (www.syntegra.com) > Allaire Certified Instructor and Member of Team Allaire > > Email : [EMAIL PROTECTED] > ICQ UIN : 3679482 > > "My ally is the Force, and a powerful ally it is." - Yoda > > > > -Original Message- > > From: Won Lee [mailto:[EMAIL PROTECTED]] > > Sent: Monday, April 03, 2000 9:51 AM > > To: cf-talk (E-mail) > > Subject: structclear > > > > > > > > I thought I had read that this line of code no longer works well > > in 4.5, is > > this true? > > > > > > > > > > > > Is there a better alternative? Should I be surrounding this with > > ? > > > > Won Lee > > Systems Consultant > > New Channel Technologies > > (330) 220-1558 > > [EMAIL PROTECTED] > > > > "Turning ideas into e-Business" > > Premier Partner > > > > -- > > > > Archives: http://www.eGroups.com/list/cf-talk > > To Unsubscribe visit > > http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf > > _talk or send a message to [EMAIL PROTECTED] with > > 'unsubscribe' in the body. > > -- > -- > -- > Archives: http://www.eGroups.com/list/cf-talk > To Unsubscribe visit > http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or > send a message to [EMAIL PROTECTED] with 'unsubscribe' in > the body. > > --_=_NextPart_001_01BF9D84.2235BDF0 > Content-Type: text/html; > charset="windows-1252" > Content-Transfer-Encoding: quoted-printable > > > > > charset=3Dwindows-1252"> > 5.5.2448.0"> > RE: structclear > > > > You mean it will clear client variables as = > well? I use that line of code for logout function. > > > I think you were the person that also recommended = > that one put a <cflock> around tags that manipulate session = > variables...should it be done in this case as well? > > -Original Message- > From: Raymond K. Camden [ HREF=3D"mailto:[EMAIL PROTECTED]">mailto:raymond.k.camden@sy= > ntegra.com] > Sent: Monday, April 03, 2000 11:14 AM > To: [EMAIL PROTECTED] > Subject: RE: structclear > > > > It works, but too well. It also clears out session = > vars that ColdFusion uses > to track you. You should either use StructDelete to = > remove individual > variables, or simply store all of your stuff in a = > substructure, like > Session.MyVars. Then you can call StructClear on = > that structure w/o any > worries. > > > SIZE=3D2>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
RE: structclear
Could you enhance upon why you need to use cflock? Thanks! Michael W. Blair Web Applications Developer Canyon WebWorks An Arizona Internet LLC Company http://www.canyon.net [EMAIL PROTECTED] PHONE: (520) 773-9059 FAX: (520) 773-4945 -Original Message- From: Raymond K. Camden [mailto:[EMAIL PROTECTED]] Sent: Monday, April 03, 2000 10:31 AM To: [EMAIL PROTECTED] Subject: RE: structclear It will not clear client vars, that's a different scope. And yes, you should use CFLOCK in the case I described below. To be 100% safe, you should -always- use CFLOCK. === Raymond Camden, Webmaster of the Death Clock (www.deathclock.com) Cold Fusion Jedi Master for Syntegra (www.syntegra.com) Allaire Certified Instructor and Member of Team Allaire Email : [EMAIL PROTECTED] ICQ UIN : 3679482 "My ally is the Force, and a powerful ally it is." - Yoda > -Original Message- > From: Won Lee [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 03, 2000 11:49 AM > To: '[EMAIL PROTECTED]' > Subject: RE: structclear > > > This message is in MIME format. Since your mail reader does not understand > this format, some or all of this message may not be legible. > > --_=_NextPart_001_01BF9D84.2235BDF0 > Content-Type: text/plain; > charset="windows-1252" > > You mean it will clear client variables as well? I use that line of code > for logout function. > > I think you were the person that also recommended that one put a > around tags that manipulate session variables...should it be done in this > case as well? > > -Original Message- > From: Raymond K. Camden [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 03, 2000 11:14 AM > To: [EMAIL PROTECTED] > Subject: RE: structclear > > > It works, but too well. It also clears out session vars that > ColdFusion uses > to track you. You should either use StructDelete to remove individual > variables, or simply store all of your stuff in a substructure, like > Session.MyVars. Then you can call StructClear on that structure w/o any > worries. > > === > Raymond Camden, Webmaster of the Death Clock (www.deathclock.com) > Cold Fusion Jedi Master for Syntegra (www.syntegra.com) > Allaire Certified Instructor and Member of Team Allaire > > Email : [EMAIL PROTECTED] > ICQ UIN : 3679482 > > "My ally is the Force, and a powerful ally it is." - Yoda > > > > -Original Message- > > From: Won Lee [mailto:[EMAIL PROTECTED]] > > Sent: Monday, April 03, 2000 9:51 AM > > To: cf-talk (E-mail) > > Subject: structclear > > > > > > > > I thought I had read that this line of code no longer works well > > in 4.5, is > > this true? > > > > > > > > > > > > Is there a better alternative? Should I be surrounding this with > > ? > > > > Won Lee > > Systems Consultant > > New Channel Technologies > > (330) 220-1558 > > [EMAIL PROTECTED] > > > > "Turning ideas into e-Business" > > Premier Partner > > > > -- > > > > Archives: http://www.eGroups.com/list/cf-talk > > To Unsubscribe visit > > http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf > > _talk or send a message to [EMAIL PROTECTED] with > > 'unsubscribe' in the body. > > -- > -- > -- > Archives: http://www.eGroups.com/list/cf-talk > To Unsubscribe visit > http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or > send a message to [EMAIL PROTECTED] with 'unsubscribe' in > the body. > > --_=_NextPart_001_01BF9D84.2235BDF0 > Content-Type: text/html; > charset="windows-1252" > Content-Transfer-Encoding: quoted-printable > > > > > charset=3Dwindows-1252"> > 5.5.2448.0"> > RE: structclear > > > > You mean it will clear client variables as = > well? I use that line of code for logout function. > > > I think you were the person that also recommended = > that one put a <cflock> around tags that manipulate session = > variables...should it be done in this case as well? > > -Original Message- > From: Raymond K. Camden [ HREF=3D"mailto:[EMAIL PROTECTED]">mailto:raymond.k.camden@sy= > ntegra.com] > Sent: Monday, April 03, 2000 11:14 AM > To: [EMAIL PROTECTED] > Subject: RE: structclear > > >
RE: structclear
> Could you enhance upon why you need to use cflock? Thanks! Any time you read or write to memory variables (session, application, server) you should use CFLOCK. If you're using CF 4.5, you should use the SCOPE attribute in your CFLOCK tag, otherwise use the NAME attribute. If you don't, you risk memory corruption issues, which you'll most likely see under heavy load. You might think that you don't have to lock accesses to session variables, especially reads of those variables, since sessions are associated with a single user. You'd be wrong. There are cases when multiple scripts may access the same session variables simultaneously, such as in a frameset, but also it seems that without explicitly locking the variables, even if they're not being accessed simultaneously, bad things may happen under heavy load. I don't know why that is, but I do know that you can prevent it by religiously using CFLOCK. Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ voice: (202) 797-5496 fax: (202) 797-5444 -- Archives: http://www.eGroups.com/list/cf-talk To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
Re: structclear
>Could you enhance upon why you need to use cflock? Thanks! I have forwarded to Michael a series of posts made to the Fusebox list some time ago about locking access to shared variable access. If anyone else is interested just let me know. You may also want to look at http://www.allaire.com/Handlers/index.cfm?ID=14165&Method=Full Regards, Seth Petry-Johnson Argo Enterprise and Associates -- Archives: http://www.eGroups.com/list/cf-talk To Unsubscribe visit http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
StructClear(Session)
Douglas said: One thing to note, is that with structClear() you will be killing all session vars and not just the user that logged out. I just checked, and in my app at least, this is not true. I use StructClear(session) to log folks out and it works just fine. I just tried logging in as two different users on two different machines, and I could log out one account and the other continued with no problems. I would think it would be a major inconsistency for it to clear all session variables for all sessions, since you can only set variables for the one active session. Here's the contents of my act_logout.cfm file: - Eric ~~ Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: StructClear(session)
You can't if unless you move that variables content into another scope -Original Message- From: sebastian palmigiani [mailto:[EMAIL PROTECTED]] Sent: Monday, April 08, 2002 11:01 PM To: CF-Talk Subject: StructClear(session) After I do a StructClear(Session) the Session.URLToken that I have added to links also get cleared out and I get a message that Session.URLToken can't be found. How do I prevent it from doing it that? Thanks Sebastian __ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: StructClear(session)
On 4/8/02, sebastian palmigiani penned: >After I do a > >StructClear(Session) > >the Session.URLToken that I have added to links also get cleared out and I >get a message that Session.URLToken can't be found. How do I prevent it from >doing it that? If you only have a couple session variables you could just delete them. structdelete(session, 'variable1'); structdelete(session, 'variable2'); Otherwise, just make a local variables before you clear the session then reset the Session.URLToken. variables.URLToken = session.URLToken; structclear(session); session.URLToken = variables.URLToken; Don't forget to lock either. :) -- Bud Schneehagen - Tropical Web Creations _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ ColdFusion Solutions / eCommerce Development [EMAIL PROTECTED] http://www.twcreations.com/ 954.721.3452 __ Signup for the Fusion Authority news alert and keep up with the latest news in ColdFusion and related topics. http://www.fusionauthority.com/signup.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
StructClear(session) again...
Hi, Recently someone said that StructClear(session) was a bad way to remove session variables. Why? If I effectively want to remove an entire session (this is ti be used in a logout template), wouldn't StructClear(Session) be the way to do it? Regards Tage Widsell Webmaster Propellerhead Software ~~ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: StructClear(Session)
I actually just needed to delete a structure, so I read up a little and tried out some cfdumps, and according to Jedi Master Forta (Web Application Construction Kit, 4th Ed), StructClear just erases the current user's session (and everything in it.) It doesn't erase all session variables on the server, just the one's tied to that user's CFID and CFToken, which includes CDID, CFToken, SessionID, URLToken, and whatever variables your application uses... Tyler Silcox email | [EMAIL PROTECTED] website | www.gslsolutions.com - Original Message - From: "Maia, Eric" <[EMAIL PROTECTED]> To: "CF-Talk" <[EMAIL PROTECTED]> Sent: Tuesday, November 13, 2001 2:31 PM Subject: StructClear(Session) Douglas said: One thing to note, is that with structClear() you will be killing all session vars and not just the user that logged out. I just checked, and in my app at least, this is not true. I use StructClear(session) to log folks out and it works just fine. I just tried logging in as two different users on two different machines, and I could log out one account and the other continued with no problems. I would think it would be a major inconsistency for it to clear all session variables for all sessions, since you can only set variables for the one active session. Here's the contents of my act_logout.cfm file: - Eric ~~ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: StructClear(Session)
> Douglas said: > One thing to note, is that with structClear() you will be > killing all session vars and not just the user that logged out. > I just checked, and in my app at least, this is not true. I believe that it will not clear out the CFIF and CFToken in versions 4.x but will do so in version 5 So it depends on what version of CF you are using ~~ Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: StructClear(Session)
> > Douglas said: > > One thing to note, is that with structClear() you will be > > killing all session vars and not just the user that logged out. > > I just checked, and in my app at least, this is not true. > I believe that it will not clear out the CFIF and CFToken in versions 4.x > but will do so in version 5 > So it depends on what version of CF you are using I've just been told that it does this in CF 4.5 as well so I guess its versions prior to CF4.5 that are "session safe". ~~ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
locks and StructClear
What type of lock is used with StructClear(Session)? Is it ReadOnly or Exclusive? Sebastian ~~ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: StructClear(session) again...
Tage, If you run a the StructClear() against the session scope you will lose ALL the session keys, including the session ID, CFID and CFTOKEN. Once these are gone, it is impossible to then associate a user with a session. Good luck, Beau -Original Message- From: Tage Widsell [mailto:[EMAIL PROTECTED]] Sent: Tuesday, November 13, 2001 5:03 AM To: CF-Talk Subject: StructClear(session) again... Hi, Recently someone said that StructClear(session) was a bad way to remove session variables. Why? If I effectively want to remove an entire session (this is ti be used in a logout template), wouldn't StructClear(Session) be the way to do it? Regards Tage Widsell Webmaster Propellerhead Software ~~ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: StructClear(session) again...
structClear(session.loggedIn,username) would be a better alternative. Db - Original Message - From: "Beau Harbin" <[EMAIL PROTECTED]> To: "CF-Talk" <[EMAIL PROTECTED]> Sent: Tuesday, November 13, 2001 5:00 AM Subject: RE: StructClear(session) again... > Tage, > > If you run a the StructClear() against the session scope > you will lose ALL the session keys, including the session > ID, CFID and CFTOKEN. Once these are gone, it is impossible > to then associate a user with a session. > > Good luck, > Beau > > > -Original Message- > From: Tage Widsell [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, November 13, 2001 5:03 AM > To: CF-Talk > Subject: StructClear(session) again... > > > Hi, > > Recently someone said that StructClear(session) was a bad way to remove > session variables. Why? If I effectively want to remove an entire > session > (this is ti be used in a logout template), wouldn't StructClear(Session) > be > the way to do it? > > Regards > Tage Widsell > Webmaster > Propellerhead Software > > > ~~ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: StructClear(session) again...
How is username defined here? The answer is probably obvious, but I'm still working on my first cup of coffee. - Matt Robertson [EMAIL PROTECTED] MSB Designs, Inc. http://mysecretbase.com - - Original Message - From: "Douglas L. Brown" <[EMAIL PROTECTED]> To: "CF-Talk" <[EMAIL PROTECTED]> Sent: Tuesday, November 13, 2001 7:57 AM Subject: Re: StructClear(session) again... structClear(session.loggedIn,username) would be a better alternative. Db ~~ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: StructClear(session) again...
Well it depends on what the key is in your structure. I personally do not use a struct for keeping my login stuff, I just use the temp token etc. They will be independenat of eachother and will expire immediately once the user closes his browser. login page SELECT username,password FROM cust_login WHERE username = '#userName#' AND password = '#password#' - Original Message - From: "Matt Robertson" <[EMAIL PROTECTED]> To: "CF-Talk" <[EMAIL PROTECTED]> Sent: Tuesday, November 13, 2001 9:58 AM Subject: Re: StructClear(session) again... > How is username defined here? The answer is probably obvious, but I'm still > working on my first cup of coffee. > > - > Matt Robertson [EMAIL PROTECTED] > MSB Designs, Inc. http://mysecretbase.com > - > > - Original Message - > From: "Douglas L. Brown" <[EMAIL PROTECTED]> > To: "CF-Talk" <[EMAIL PROTECTED]> > Sent: Tuesday, November 13, 2001 7:57 AM > Subject: Re: StructClear(session) again... > > > structClear(session.loggedIn,username) would be a better alternative. > > > > Db > > > > > ~~ Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: StructClear(session) again...
DOH! I define the structure. duh. Thanks for the pointer ;D --Matt-- - Original Message - From: "Douglas L. Brown" <[EMAIL PROTECTED]> To: "CF-Talk" <[EMAIL PROTECTED]> Sent: Tuesday, November 13, 2001 10:24 AM Subject: Re: StructClear(session) again... Well it depends on what the key is in your structure. I personally do not use a struct for keeping my login stuff, I just use the temp token etc. They will be independenat of eachother and will expire immediately once the user closes his browser. login page SELECT username,password FROM cust_login WHERE username = '#userName#' AND password = '#password#' - Original Message - From: "Matt Robertson" <[EMAIL PROTECTED]> To: "CF-Talk" <[EMAIL PROTECTED]> Sent: Tuesday, November 13, 2001 9:58 AM Subject: Re: StructClear(session) again... > How is username defined here? The answer is probably obvious, but I'm still > working on my first cup of coffee. > > - > Matt Robertson [EMAIL PROTECTED] > MSB Designs, Inc. http://mysecretbase.com > - > > - Original Message - > From: "Douglas L. Brown" <[EMAIL PROTECTED]> > To: "CF-Talk" <[EMAIL PROTECTED]> > Sent: Tuesday, November 13, 2001 7:57 AM > Subject: Re: StructClear(session) again... > > > structClear(session.loggedIn,username) would be a better alternative. > > > > Db > > > > > ~~ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: StructClear(session) again...
Using StructClear(session) clears out the entire session scope, including sessionID, CFID & CFTOKEN - if this is what you want, great. It's important to use StructClear(session.structName) if you want to clear only a single structure in the session scope. Chris Norloff -- Original Message -- from: Tage Widsell <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] date: Tue, 13 Nov 2001 11:03:05 +0100 >Hi, > >Recently someone said that StructClear(session) was a bad way to remove >session variables. Why? If I effectively want to remove an entire session >(this is ti be used in a logout template), wouldn't StructClear(Session) be >the way to do it? > >Regards >Tage Widsell >Webmaster >Propellerhead Software > > ~~ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
HELP - Logout (sessionDelete, StructClear)?
I have written an application that allows a user to log in. When the user logs in I run the following code... I first check to see if the user exisits. If so... Then I set some session variables
self.location ='https://foo';
return them to the home page This works fine. The problem I am having is that when they press logout. It does not really logo them out. Here is my logout code... Log Off Failed Logging Off. It does send them back to the home page, but if I log in with a different ID, I am still accessing the site with the account I just logged out with. HELP...I have tried everything I could think of and it is still not logging them out. I have an application file running with this... Not sure if that will make a difference. Thanks [Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings]
OT: Re: locks and StructClear
EXCLUSIVE At 04:42 PM 4/19/01 -0500, you wrote: >What type of lock is used with StructClear(Session)? Is it ReadOnly or >Exclusive? > >Sebastian > > > ~~ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: HELP - Logout (sessionDelete, StructClear)?
I'm not sure why you have this behaviour. I have two remarks on your code: 1. The sessiontimeout/applicationtimeout in timeout as a value, NOT yes/no. 2. What I do to easily clear session info, is creating the variables in a structure. Then you can use structDelete on the session and delete the entire structure. You can add session info later and you don't have to change the logout code. in your application.cfm, you would change the code to sessionmanagement="Yes" sessiontimeout="#CreateTimeOut(0,2,0,0)#" applicationtimeout="#CreateTimeOut(2,0,0,0)#"> In your login, replace session by session.info And logout becomes A good way to track what's happening in your session is to simply dump it . You can see if some vars don't get deleted. Pascal -Original Message- From: Michael Grove [mailto:[EMAIL PROTECTED] Sent: zondag 16 november 2003 16:42 To: CF-Talk Subject: HELP - Logout (sessionDelete, StructClear)? I have written an application that allows a user to log in. When the user logs in I run the following code... I first check to see if the user exisits. If so... Then I set some session variables Trim(CheckUser.accounttypeseller)> Trim(CheckUser.accounttypeBidder)> <br> self.location ='https://foo';<br> return them to the home page This works fine. The problem I am having is that when they press logout. It does not really logo them out. Here is my logout code... Log Off Failed Logging Off. It does send them back to the home page, but if I log in with a different ID, I am still accessing the site with the account I just logged out with. HELP...I have tried everything I could think of and it is still not logging them out. I have an application file running with this... sessionmanagement="Yes" sessiontimeout="Yes" applicationtimeout="Yes"> Not sure if that will make a difference. Thanks _ [Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings]
