|
Yes, you can make an object hierarchy and
then simply have the descriptor that you write return the appropriate child
element. The default descriptor simply returns the children property, your
descriptor could return a different property based on what the type of the
object is. If you’re willing to make an object hierarchy doing this is very
easy. It’s when you don’t want to build the hierarchy yourself
that you might need to do more work. For example you say you have 3
RecordSources which is I guess a Microsoft thing? The first RecordSource is of
categories? The second one is subcategories (is it all of the subcategories or
is it just the subcategories for a particular category)? And the third is the products
(for all subcategories or only for one)? If you have a descriptor you can make
sure it has a reference to all three RecordSources and only returns the correct
subsets or whatever when given a node. For example, given a category, return
the elements in the subcategory RecordSource that match up (or the whole
RecordSource if it was one source per category), then do the equiv for
products. Matt From: Matt, Thanks for your descriptive reply. Actually I am fetching RecordSource from database for categories and
products. (categories have sub categories too). What I need to do is show all
these products as tree. where all firstchild will be categories, they also have
many childs as many sub categories they may have and finally they will have
leaf as all products of that particular sub category. I can get 3 recordset for categories, subcategories for particular
category and finally items in that sub category. Now I dont want to process XML
nodes as it may take more time as I have lots of data. Can't I make some object
of tree herarchy and directly attach it to tree as dataProvider like we do in
list, combo box etc? I hope that my this description will able to visualize my problem to
you. Thanks again for your kind help. Regards, Jignesh On 3/10/06, Sorry Jignesh, a simple TreeDataDescriptor example will be
coming in the B2 docs but I don't know if it will help. How will your 2
or 3 ArrayCollections work. What is the relationship between them?
Should you be considering building a structure of value objects on your server
as opposed to assembling on the client? If you do keep the 3 collections the main thing you need to
do is define your getChildren function for the descriptor. Given a node,
find the children and return an ICollectionView with that data. So how is
that going to work, will you start out reading from one collection, then the children
will be in the 2 nd collection, then the grandchildren will be in
the 3rd? If so, define your function to read that stuff
appropriately. If you provide some examples of what the data tables will
look like and what the tree needs to look like maybe someone can help you
further. Matt From: [email protected]
[mailto:[email protected]]
On Behalf Of Jignesh Dodiya
Still i
am not getting the sollution........ there is
no any example for TreeDataDescriptor in the
docs...........anybody has an idea how can I put data in tree
control as from the mySQL database and from 2 different tables On
2/27/06, Jignesh Dodiya < [EMAIL PROTECTED]>
wrote: Its
great, thanx Matt, Is there
any working sample available regarding ths............... Jignesh On
2/27/06, Flex 2 allows you to specify a TreeDataDescriptor for this
exact purpose, specify the top-level data to the Tree and then use the
descriptor to read into those other arrays as necessary for the children (or
other parts of the data). MAtt From: [email protected]
[mailto:[email protected]]
On Behalf Of Jignesh Dodiya I think ,
it seems really very difficult or just it may be wrong way or bad
stuffs On
2/26/06, Jignesh M. Dodiya < [EMAIL PROTECTED]>
wrote:
SPONSORED LINKS
YAHOO! GROUPS
LINKS
-- jignesh
dodiya
SPONSORED
LINKS
YAHOO!
GROUPS LINKS
|
