Re: [mihini-dev] Mihini persist API

[Cuero Bugot <cbugot@xxxxxxxxxxxxxxxxxx>]

Hi,

 

Answering your questions is very time consuming, so please try to look in the documentation or the code before posting, if possible. Even for yourself, you will gain time J

In that precise case I think that you would find answers in the persist documentation (look the doc in the module itself, or look at the generated doc on Mihini web site: http://download.eclipse.org/mihini/org.eclipse.mihini-incubation-0.9/Docs/Lua_User_API/persist.html)

 

 

 

 

Once you do t = persist.table.new('test1'), t is a persisted table. So every time you update a key in that table it is persisted.

 

t = persist.table.new('test1')

t.a = 1

t.b = 2

 

--reboot

 

print(t.b) -- will print value 2

 

Be careful that only the first level of the table is persisted so if you do:

 

 

row1 = {a =1, b=2, c=3}

t = persist.table.new('test1')

t.row1 = row1

 

then

t.row1.a=2 -- will not be persisted. You have to write the first level of the persisted table so in the current case you would have to do

row1.a=2

t.row1=row1

 

It work but it is not that efficient. Persisted table is more adapted to store flat values.

 

Regards,

Cuero

 

From: mihini-dev-bounces@xxxxxxxxxxx [mailto:mihini-dev-bounces@xxxxxxxxxxx] On Behalf Of satishbaganal iit
Sent: Tuesday, November 25, 2014 3:31 PM
To: mihini-dev@xxxxxxxxxxx
Subject: [mihini-dev] Mihini persist API

 

Hi guys

                  i am using the following code create new table and it creating test1.l2b

file and writing these values in that file.

--local t = require 'persist'
local persist = require 'persist'
t = persist.table.new('test1')

local function main()
print("*********************")
print("   Hello persist")
print("*********************")

 persist.table.empty(t)
 
       for i=1,2 do
            t["key"..i] = "value"..i
        end

end
main()

My question is how to update the values with new values like
my old values in file are
key1 = value1  key2 = vaue2 key3 = value3

and i want to update with

key1 = high  key2 = low key3 = 1

please guide me how to solve the problem and is persist is related to sqlite3 database.