sqlite Constraint failed - iphone

Question

I am developing an app based on sqlite,
When i am inserting data in to database the following error occurs.
Table Structure:
CREATE TABLE "Products" ("ProductBarcode" VARCHAR PRIMARY KEY UNIQUE NOT NULL , "ProductName" VARCHAR NOT NULL , "ProductImage" VARCHAR NOT NULL , "ProductIngredients" VARCHAR NOT NULL , "ProductStatus" VARCHAR NOT NULL )
2011-04-15 10:09:48.408 halalgauge[4517:207] Not Matched
2011-04-15 10:09:48.410 halalgauge[4517:207] *** Assertion failure in -[sqlClass addRecord:], /Users/admin/Desktop/Halal/Classes/sqlClass.m:149
2011-04-15 10:09:48.410 halalgauge[4517:207] Exception occured at add statement, the error is Error while inserting data. 'constraint failed'
The code is:
#import "sqlClass.h"
sqlite3 *database = nil;
sqlite3_stmt *deleteStmt = nil;
sqlite3_stmt *addStmt = nil;
sqlite3_stmt *detailStmt = nil;
sqlite3_stmt *updateStmt = nil;
#implementation sqlClass
#synthesize membersInfoArray,membersInfoDict,rowID;
- (void) copyDatabaseIfNeeded
{
membersInfoArray = [[NSMutableArray alloc]init];
membersInfoDict = [[NSMutableDictionary alloc]init];
//Using NSFileManager we can perform many file system operations.
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSString *dbPath = [self getDBPath];
BOOL success = [fileManager fileExistsAtPath:dbPath];
if(!success) {
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"HalalGauge.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error];
if (!success)
NSAssert1(0, #"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
}
- (NSString *) getDBPath {
#try {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
return [documentsDir stringByAppendingPathComponent:#"HalalGauge.sqlite"];
}
#catch (NSException * e) {
NSLog(#"Exception");
}
#finally {
//[sqlClass finalizeStatements];
NSLog(#"At Finally block");
}
}
+ (void) finalizeStatements {
if (addStmt) sqlite3_finalize(addStmt);
if (database) sqlite3_close(database);
if (deleteStmt) sqlite3_finalize(deleteStmt);
if (detailStmt) sqlite3_finalize(detailStmt);
if (updateStmt) sqlite3_finalize(updateStmt);
}
- (void) gettingData:(NSString *)dbPath {
NSLog(#"Data base path is %#",dbPath);
if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK)
{
const char *sql = "select * from Products";
sqlite3_stmt *selectstmt;
if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK)
{
while(sqlite3_step(selectstmt) == SQLITE_ROW)
{
[membersInfoDict setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 0)] forKey:#"ProductBarcode"];
[membersInfoDict setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 1)] forKey:#"ProductName"];
[membersInfoDict setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 2)] forKey:#"ProductImage"];
[membersInfoDict setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 3)] forKey:#"ProductIngredients"];
[membersInfoDict setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 4)] forKey:#"ProductStatus"];
if(membersInfoDict)
{
[membersInfoArray addObject:membersInfoDict];
membersInfoDict = nil;
// NSLog(#"Entered and return");
// return;
}
}
}
}
else
sqlite3_close(database); //Even though the open call failed, close the database connection to release all the memory.
}
- (void) addRecord:(NSMutableDictionary *)recordDict
{
#try {
if(addStmt == nil) {
const char *sql = "insert into Products (ProductBarcode,ProductName,ProductImage,ProductIngredients,ProductStatus) Values(?,?,?,?,?)";
if(sqlite3_prepare_v2(database, sql, -1, &addStmt, NULL) != SQLITE_OK)
NSAssert1(0, #"Error while creating add statement. '%s'", sqlite3_errmsg(database));
}
sqlite3_bind_text(addStmt, 1, [[recordDict objectForKey:#"ProductBarcode"] UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStmt, 2, [[recordDict objectForKey:#"ProductName"] UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStmt, 3, [[recordDict objectForKey:#"ProductImage"] UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStmt, 4, [[recordDict objectForKey:#"ProductIngredients"] UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStmt, 5, [[recordDict objectForKey:#"ProductStatus"] UTF8String], -1, SQLITE_TRANSIENT);
//NSLog(#"the values are %#",addStmt);
if(SQLITE_DONE != sqlite3_step(addStmt))
NSAssert1(0, #"Error while inserting data. '%s'", sqlite3_errmsg(database));
else
rowID = sqlite3_last_insert_rowid(database);
NSLog(#"last inserted rowId = %d",rowID);
sqlite3_close(database);
}
#catch (NSException * e) {
NSLog(#"Exception occured at add statement, the error is %# ",e);
}
#finally {
[sqlClass finalizeStatements];
}
}
#end

Answer 1

may be it's not a "not null" constrain but "ProductBarcode" PRIMARY KEY UNIQUE?
did you check you product barcode uniqueness???

Answer 2

I solved my problem with the following code:
- (void) addRecord:(NSMutableDictionary *)recordDict
{
#try {
[self checkAndCreateDatabase];
if (sqlite3_open([databasePath UTF8String], &database)== SQLITE_OK) {
NSString *statement;
sqlite3_stmt *compiledstatement;
NSString *ProductName,*ProductBarcode,*ProductImage,*ProductIngredients,*ProductStatus;
ProductName = [recordDict objectForKey:#"ProductName"];
ProductBarcode = [recordDict objectForKey:#"ProductBarcode"];
ProductImage = [recordDict objectForKey:#"ProductImage"];
ProductIngredients = [recordDict objectForKey:#"ProductIngredients"];
ProductStatus = [recordDict objectForKey:#"ProductStatus"];
statement = [[NSString alloc]initWithFormat:#"insert into Products values('%#','%#','%#','%#','%#')",ProductBarcode,ProductName,ProductImage,ProductIngredients,ProductStatus];
const char *sqlstatement = [statement UTF8String];
if (sqlite3_prepare_v2(database, sqlstatement, -1, &compiledstatement, NULL)== SQLITE_OK) {
if (SQLITE_DONE!=sqlite3_step(compiledstatement) ) {
NSAssert1(0,#"Error when inserting %s",sqlite3_errmsg(database));
}
else {
NSLog(#"Data inserted Successfully");
}
sqlite3_finalize(compiledstatement);
}
sqlite3_close(database);
}
}
#catch (NSException * e) {
NSLog(#"The Record already inserted ");
}
}