Saving data

[poodk]

Hi ,
I'm developing an a[[lication in Symbian and I want to save some data(Of the App.) in the drive.
There is options (Exceps regular read/write from file) to do it ? (i.e. DB , Save objects to file like java ,or Registery).

Best regrads ,
Pood

[sriky27]

You could use Database to store your information.

[poodk]

You could use Database to store your information.

Thanks , The question is which DB (If you have the name of API for the DB) and If it is worthwhile to do it for small amount of data ?

[yogpan]

Hi,
You could use any other way to store your data but I guess you will require to use RFile class to achieve it. So Read/Write methods are still valid methods for your case.

[sriky27]

Hi,

You could use RDbNamedDatabase here in the following link there is a sample implementation http://wiki.forum.nokia.com/index.php/Database_Example

[yogpan]

Thanks , The question is which DB (If you have the name of API for the DB) and If it is worthwhile to do it for small amount of data ?

Hi,
If you want your data to be secure (by not allowing other application to access your data) then you can store your data in your private UID folder.This will prevent other application to have access to your data. Only your application will have access to the data.

[poodk]

The problem to use in RFile that I want to save data that after it i'll need to parse it (From the file).
What i want is to load and save different types (Like TTime , Tbuf , etc) on the device without need to parse it.If I want want to save only text , I will use file direct probably.

[sriky27]

Hi poodk,

You could use RDbNamedDatabase to store TTime and Tbuf check out the link I have given and also check out RDbRowSet public api's.

[poodk]

Thanks , that what I search

[wizard_hu_]

DB is a bit overkill for this purpose.
If you have a T-class, say

class TAdvertisement
{
public:
    TBuf<20> iWare;
    TBuf<200> iDescription;
    TInt iPrice;
    TTime iDeadline;
};

and you want to save or load it, just write

// 'ad' is a TAdvertisement, 'file' is an RFile
TPckg<TAdvertisement> adpack(ad);
file.Write(adpack);
// or file.Read(adpack); and the result immediately appears in 'ad'

TPckg (and TPckgBuf) is a packaging descriptor, it wraps your structure into a 8-bit descriptor which can be directly written/read to/from a file without text-conversion/parsing.