#include <QDateTime>
#include <QDebug>
-// INFO:
-// all record items/columns may be defined in one table (1.), or
-// they can be splitted in two separate tables (2.) (eg. for FTS support)
-// 1.) you have to define "static QString const sTableName"
-// 2.) you have to define two table names:
-// "static QString const sTable1Name"
-// "static QString const sTable2Name"
-// and since all record items/columns are handled by one QSqlRecord,
-// you have to also define number of columns that belongs to table 1 (1.), and table 2 (2.)
-// 1.) "static int const sTable1ColCount"
-// 2.) "static int const sTable2ColCount"
-// there are also defined auxiliary methods for 1-Table/2-Tables approach, see bellow
-
class OrmException
{
};
static QString columnsForSelect(const QString& prefix = QString());
static QString selectQuery();
static QString updateQuery();
- // record items/columns are stored in two tables
- static QString columnsForSelectJoin2T(); // for joining two tables
- static QString selectQueryJoin2T(const QString &key); // for joining two tables
static QVariant convertToC(QVariant value, QVariant::Type colType);
static QVariant convertToDb(QVariant value, QVariant::Type colType);
return prefixedColumns.join(",");
}
-template <typename T>
-QString OrmRecord<T>::columnsForSelectJoin2T()
-{
- Q_ASSERT((T::sTable1ColCount+T::sTable2ColCount) == T::sColumns.count());
-
- QStringList prefixedColumns;
- for (int i=0; i<T::sTable1ColCount; i++)
- {
- prefixedColumns.append(QString("%1.%2").arg(T::sTable1Name, T::sColumns.field(i).name()));
- }
- for (int j=0; j<T::sTable2ColCount; j++)
- {
- prefixedColumns.append(QString("%1.%2").arg(T::sTable2Name, T::sColumns.field(T::sTable1ColCount+j).name()));
- }
- return prefixedColumns.join(",");
-}
-
template <typename T>
QString OrmRecord<T>::selectQuery()
{
return QString("SELECT %1 FROM %2 ").arg(columnsForSelect(), T::sTableName);
}
-
-template <typename T>
-QString OrmRecord<T>::selectQueryJoin2T(const QString &key)
-{
- return QString("SELECT %1 FROM %2 INNER JOIN %3 ON %4.%5 = %6.%7 ").arg(
- columnsForSelectJoin2T(),
- T::sTable1Name,
- T::sTable2Name,
- T::sTable1Name,
- key,
- T::sTable2Name,
- key);
-}
-
template <typename T>
QString OrmRecord<T>::updateQuery()
{
- return QString("UPDATE %1 ").arg(T::sTable1Name);
+ return QString("UPDATE %1 ").arg(T::sTableName);
}
template <typename T>