Hello All,I am working on an application and got stuck in design phase I
hope you guyz can help me out. I have several doubts related to performance
and modelling.
1#
In my application i store some hierarchical data and not sure how to do it.
for e.g. say you have data organized as
food
|____fruit
| |___red---Iron----apples
| | | |____something
| | |
| | |___Viatamins ---- litchies
| |
| |___green----Iron-----apples
| |_____Vitamin E ----- guava
|
|____vegetable-------category1 -----category2----category3
| |________________
| | |________
| |________________________________
| |____ |____
|____fried |_______
|__similarly here
Is there a clean way to store this kind of data in appengine. I mean what
should be classes , their properties etc.
In my case the sub categories can upto a depth of 10, with each level having
100s of categories.
I will be executing queries to lookup by any node, so basically i can do
lookup by fruit or apple or food as a whole.
2#
My applcation is going to have a search box where user will be writing his
search items, I would like to suggest them the correct word if they do a
spelling mistake, so if they type frut i wil suggest them to type fruit.
The way i am thinking of implementing it is to for each word entered do a
comparison with each node element with a relaxation of 2, so if the word
matched except at two points i will go ahead and suggest it. I think as i
need to have sequential traversal of all the nodes, which may take a lot of
time and resources, I should store it somewhere to do faster lookup like in
memcache, what are your suggestions.
3#
Are there any standard APIs to send sms from application. I asked about this
in other thread but haven't got any reply, I hope I will get some answers
this time.
I am quiet new to web site designing and any other suggestion or some
pointers to general design principles would be great.
Regards,
Vijay
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