I haven't tried the way you did it yet Kerry.  I did get it to work however.

Claude, you're incorrect on the database structure of a tree.  You can put
it all in one table and recursively get the entire tree.  How else could you
support unlimited parent child relationships?  I have trees that go 20 deep.
I'm definitely not going to have a table for each child.

Thanks for the help.

Emmet

-----Original Message-----
From: Kerry [mailto:[EMAIL PROTECTED] 
Sent: Thursday, June 02, 2005 10:57 AM
To: CF-Talk
Subject: RE: get parent items from list?

>What's the most efficient way of determining the parent of any item in the
> list and determining that item1 has no parent

perhaps im missing something here, but:

mylist = "item1,item2,item3,item4";

for(i=1; i lte ListLen(mylist);i=i+1){

        WriteOutput("I am: "&ListGetAt(mylist,i));

        if(i eq 1){
                WriteOutput(" and I am the root");
        }else{
                WriteOutput(" and my parent is:
"&findparent(mylist,ListGetAt(mylist,i)));
        }

        WriteOutput("<br>");
}

function findparent(nlist,me){
        var myparent = "root";
        var myindex = ListFind(nlist,me);

        if(myindex gt 1){
                myparent = ListGetAt(nlist,myindex-1);
        }

        return myparent;
}

-----Original Message-----
From: Jerry Barnes [mailto:[EMAIL PROTECTED]
Sent: 02 June 2005 15:36
To: CF-Talk
Subject: Re: get parent items from list?


Sounds like an adjaceny list model.

Does the list contain the whole tree or does a list only contain a path from
one node to another while other lists contain other paths?



On 6/2/05, Emmet McGovern <[EMAIL PROTECTED]> wrote:
>
> Brain Meltdown. Maybe someone can help.
>
> I have a list such as (item1,item2,item3,item4,item5). The list can be any
> length. Item1 would be the parent of item2 and item2 would be the parent
> of
> item3 and so on.
>
> What's the most efficient way of determining the parent of any item in the
> list and determining that item1 has no parent?
>
> Thanks,
> Emmet
>
>
>
>





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