dbobject.h

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/*
 * Copyright (C) 2018-2024 QuasarApp.
 * Distributed under the lgplv3 software license, see the accompanying
 * Everyone is permitted to copy and distribute verbatim copies
 * of this license document, but changing it is not allowed.
*/
 
#ifndef DBOBJECT_H
#define DBOBJECT_H
#include <QSqlRecord>
#include <QVariantMap>
#include "abstractdata.h"
#include "heart_global.h"
#include "dbaddress.h"
 
class QSqlQuery;
 
namespace QH {
namespace PKG {
 
enum class PrepareResult {
    Fail,
    Success,
    Disabled,
};
 
enum class MemberType {
    None = 0x0,
 
    Insert = 0x1,
 
    Update = 0x2,
 
    Unique = 0x4,
 
    Autoincement = 0x8,
 
    InsertUpdate = Insert | Update,
 
    PrimaryKey = Insert | Unique,
 
    PrimaryKeyAutoIncrement = PrimaryKey | Autoincement
};
 
constexpr inline uint qHash(MemberType type) {
    return static_cast<uint>(type);
}
 
struct HEARTSHARED_EXPORT DBVariant {
    DBVariant();
 
    DBVariant(const QVariant& value, MemberType type);
    QVariant value;
    MemberType type = MemberType::None;
};
 
typedef QMap<QString, DBVariant> DBVariantMap;
 
class HEARTSHARED_EXPORT DBObject : public AbstractData
{
    QH_PACKAGE("DBObject")
 
public:
 
    DBObject();
 
    ~DBObject() override;
 
    bool isValid() const override;
 
    bool isHaveAPrimaryKey() const;
 
    virtual void clear();
 
    virtual DBObject* createDBObject() const = 0;
 
    virtual PrepareResult prepareSelectQuery(QSqlQuery& q) const;
 
    virtual bool fromSqlRecord(const QSqlRecord& q) = 0;
 
    virtual PrepareResult prepareInsertQuery(QSqlQuery& q, bool replace) const;
 
    virtual PrepareResult prepareUpdateQuery(QSqlQuery& q) const;
 
    virtual PrepareResult prepareRemoveQuery(QSqlQuery& q) const;
 
    virtual bool isCached() const;
 
    virtual bool isBundle() const;
 
    DbAddress dbAddress() const;
 
    QString toString() const override;
 
    virtual DBVariantMap variantMap() const;
 
    virtual QString table() const = 0;
 
protected:
 
    QDataStream &fromStream(QDataStream &stream) override;
    QDataStream &toStream(QDataStream &stream) const override;
 
    virtual std::pair<QString, QMap<QString, QVariant>> condition() const;
 
    virtual QString primaryKey() const;
 
    virtual QVariant primaryValue() const;
 
    bool isInsertPrimaryKey() const;
 
};
}
}
 
Q_DECLARE_METATYPE(const QH::PKG::DBObject*)
Q_DECLARE_METATYPE(QH::PKG::DBObject*)
Q_DECLARE_METATYPE(QList<QH::PKG::DBObject *>*);
Q_DECLARE_METATYPE(QList<const QH::PKG::DBObject *>*);
 
#endif // DBOBJECT_H