library routine called out of sequence - iphone

Question

I am trying to write into a DB in sqlite on the iphone , i want to enter 3 values into the DB . Given Below is my code but i am getting the following sqlite error message:
-(void) writeintoDatabase:(id)value1:(id)value2:(id)value3 {
sqlite3 *database;
const char *sql = "insert into UserData(firstName,lastName,userName) Values(?, ?, ?)";
sqlite3_stmt *insert_statement;
sqlite3_prepare_v2(database, sql, -1, &insert_statement, NULL);
sqlite3_bind_text(insert_statement, 1, [value1 UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(insert_statement, 2, [value1 UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(insert_statement, 3, [value1 UTF8String], -1, SQLITE_TRANSIENT);
NSInteger keyID;
printf( "could not prepare statemnt: %s\n", sqlite3_errmsg(database) );
keyID = sqlite3_last_insert_rowid(database);
sqlite3_reset(insert_statement);
}

Answer 1

Thanks mmcomb, Thanks Mat. From both your advices i have solved the problem completely.
Firstly I wasn't checking the DB path and then opening the
connection.
Secondly after having prepared the statement and bounding the
appropriate variables i had to call sqlite3_step before calling
sqlite3_last_insert_rowid.
Thirdly i needed to call sqlite3_finalize to free the resources.
Fourthly i needed to sqlite3_close the connection.
'library routine called out of sequence' error was due to not opening and closing the connection properly.
This is the right code:
NSInteger keyID; // in .h class
NSMutableArray *user;// in .h class
-(void) writeintoUserDatabase:(NSString*)value1:(NSString*)value2:(NSString*)value3
{
sqlite3* database;
databaseName = #"UserData";// create a db with this name and keep it in app resources folder
NSString *pathToDatabase;
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDir = [documentPaths objectAtIndex:0];
pathToDatabase = [documentsDir stringByAppendingPathComponent:databaseName];
int databaseReturnCode = sqlite3_open([pathToDatabase UTF8String], &database);
NSLog(#"databaseReturnCode %d",databaseReturnCode);
if(databaseReturnCode == SQLITE_OK) {
const char *sql = "insert into UserData(firstName,lastName,userName) Values(?, ?, ?)";
sqlite3_stmt *insert_statement;
sqlite3_prepare_v2(database, sql, -1, &insert_statement, NULL);
sqlite3_bind_text(insert_statement, 1, [value0 UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(insert_statement, 2, [value1 UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(insert_statement, 3, [value2 UTF8String], -1, SQLITE_TRANSIENT);
printf( "is there an error?: %s\n", sqlite3_errmsg(database) );
while(sqlite3_step(insert_statement) == SQLITE_ROW)
{
NSString *aFirstName = [NSString stringWithUTF8String: (char*)sqlite3_column_text(insert_statement, 1)];
NSString *aLastName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(insert_statement, 2)];
NSString *aUserName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(insert_statement, 3)];
users = [[NSMutableArray alloc]initWithObjects:aFirstName,aLastName,aUserName,nil];
}
keyID = sqlite3_last_insert_rowid(database);
sqlite3_reset(insert_statement);
sqlite3_finalize(insert_statement);
}
sqlite3_close(database);
}

Answer 2

Your code is missing a call to the sqlite3_step. You need to call that after having prepared the statement and bound the appropriate variables, and before you call sqlite3_last_insert_rowid.
Check the documentation for sqlite3_step for details, and always check the error codes returned by this type of function.
Don't call sqlite3_errormsg if no error has occurred, its result is undefined in that case.
Finally, you need to call sqlite3_finalize on the statement if you're not keeping a handle to it somewhere. Otherwise you'll get resource leaks and eventually crash. sqlite3_reset does not free the resources, it just "cleans" the statement so you can re-run it with different bound values.

Answer 3

Before preparing your sqlite stament/query you need to open the connection to your database...
sqlite3* database;
NSString pathToDatabase = #"/blah/blah/database.db";
const char* pathToDatabaseUTF8 = [databasePath UTF8String];
databaseReturnCode = sqlite3_open(pathToDatabaseUTF8, &database);
See the sqlite documentation for the sqlite3_open method for more info.
Oh, and don't forget to close that connection...
int sqlite3_close(database);

Answer 4

In my case it was a the string contained some special characters like it was ( ' ) single colon i replaced it with (" ") a space and it start working. [[[items objectAtIndex:locBtn.tag]valueForKey:#"description"] stringByReplacingOccurrencesOfString:#"'" withString:#""]