Qt QList<QString> serialization for database

Question

I have a QList list. I want to insert it on the database. I didn't find any serializer method after some googling. If there any method / idea to serialize the list data for database?

Answer 1

How about using QStringList instead of QList<QString> -

QStringList numberList_;    // instead of QList<QString>, use this
QString myString1 = "Hello";
QString myString2 = "World";
numberList_ << myString1;
numberList_ << myString2;

QByteArray byteArray;
QBuffer buffer(&byteArray);
QDataStream out(&buffer);
out << numberList_;

Probably QList<QString> should also work in place of QStringList. If it doesn't, well, you can convert it pretty easily to QStringList.

QDataStream, QBuffer, QByteArray and QStringList reference.

Answer 2

Here is another option that is a bit more succinct:

QString serialize(QStringList stringList)
{
  QByteArray byteArray;
  QDataStream out(&byteArray, QIODevice::WriteOnly);
  out << stringList;
  return QString(byteArray.toBase64());
}

QStringList deserialize(QString serializedStringList)
{
  QStringList result;
  QByteArray byteArray = QByteArray::fromBase64(serializedStringList.toUtf8());
  QDataStream in(&byteArray, QIODevice::ReadOnly);
  in >> result;
  return result;
}