Inserting JSON array into Sqlite iPhone - iphone

Question

I'm getting JSON data like following in a NS array:
It seems this is not valid JSON
jsonArray:
{
d = "[{\"Training_Code\":\"1234 \",\"Training_Duration\":\"2hrs \",\"Training_Startdate\":\"14/02/2013 15:00:00\",\"Training_Enddate\":\"14/02/2013 17:00:00\",\"Trainer_ID\":1,\"Training_Location\":\"B-Wing Training room-4\",\"Comments\":\"C# training\",\"Keyword\":\"C#1234\",\"NumberofDays\":1},{\"Training_Code\":\"4321 \",\"Training_Duration\":\"16 \",\"Training_Startdate\":\"17/02/2013 10:30:00\",\"Training_Enddate\":\"17/02/2013 17:30:00\",\"Trainer_ID\":2,\"Training_Location\":\"A-Wing Training Room-6\",\"Comments\":\"Objective-C\",\"Keyword\":\"Obj-C4321\",\"NumberofDays\":2}]";
}
I want to change this to valid json like this:
[
{
"Training_Code": "1234",
"Training_Duration": "2hrs",
"Training_Startdate": "14/02/201315: 00: 00",
"Training_Enddate": "14/02/201317: 00: 00",
"Trainer_ID": 1,
"Training_Location": "B-WingTrainingroom-4",
"Comments": "C#training",
"Keyword": "C#1234",
"NumberofDays": 1
},
{
"Training_Code": "4321",
"Training_Duration": "16",
"Training_Startdate": "17/02/201310: 30: 00",
"Training_Enddate": "17/02/201317: 30: 00",
"Trainer_ID": 2,
"Training_Location": "A-WingTrainingRoom-6",
"Comments": "Objective-C",
"Keyword": "Obj-C4321",
"NumberofDays": 2
}
]
Note: I do not know, from where this "d" is comming...Plaese suggest keeping this in mind.
How can I change to valid json and insert this in my Sqlite DB? Thanks.

Answer 1

You can always inset it as plain text. If you want to manipulate JSON Strings, I recommend this. You can transform that String into a JKArray (which is the same than an Array). After that, iterate through your array and do your DB stuff (inserting into your table...)
Am I missing something? Maybe I need more info about what you want to do...

Answer 2

That's a string containing an encoded JSON array. You need to use a JSON decoder (batteries included as of iOS 5) to convert it into an NSArray, then walk it:
The following (untested) code should be about right:
// Assuming jsonArray is an object with an NSString property, d...
NSData *data = [jsonArray.d dataUsingEncoding:NSUTF8StringEncoding];
NSError *err;
NSArray *d = [NSJSONSerialization JSONObjectWithData:data options:0 error:err];
// Check for errors.
for (NSDictionary *row in d) {
NSString *trainingCode = [row objectForKey:#"Training_Code"];
…
// Insert into SQLite here.
}
Note that, in recent versions of Xcode, you can write row[#"Training_Code"] instead of [row objectForKey:#"Training_Code"].

Answer 3

Parse your json using NSJSONSerialization and insert into database by mapping keys with your columns.
NSString *str = [[NSString alloc] initWithString:#"[{\"Training_Code\":\"1234 \",\"Training_Duration\":\"2hrs \",\"Training_Startdate\":\"14/02/2013 15:00:00\",\"Training_Enddate\":\"14/02/2013 17:00:00\",\"Trainer_ID\":1,\"Training_Location\":\"B-Wing Training room-4\",\"Comments\":\"C# training\",\"Keyword\":\"C#1234\",\"NumberofDays\":1},{\"Training_Code\":\"4321 \",\"Training_Duration\":\"16 \",\"Training_Startdate\":\"17/02/2013 10:30:00\",\"Training_Enddate\":\"17/02/2013 17:30:00\",\"Trainer_ID\":2,\"Training_Location\":\"A-Wing Training Room-6\",\"Comments\":\"Objective-C\",\"Keyword\":\"Obj-C4321\",\"NumberofDays\":2}]"];
NSError *jsonError = nil;
id allValues = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding]
options:0
error:&jsonError];
if(jsonError!=nil)
InfoLog(#"error: %#",jsonError);
NSArray *result = (NSArray*)allValues;
for(int i=0;i<[result count];i++)
{
NSDictionary *values = (NSDictionary*)[result objectAtIndex:i];
NSLog(#"Training_Code: %# Training_Duration: %#",[values objectForKey:#"Training_Code"],[values objectForKey:#"Training_Duration"]);
}
Now you are able to get values from NSDictionary and then simply add in your database.