55 lines
2.2 KiB
C++
55 lines
2.2 KiB
C++
// For license of this file, see <project-root-folder>/LICENSE.md.
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#ifndef DATABASEDRIVER_H
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#define DATABASEDRIVER_H
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#include <QObject>
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#include <QSqlDatabase>
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#include <QSqlQuery>
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class DatabaseDriver : public QObject {
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Q_OBJECT
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public:
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// Describes available types of database backend.
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enum class DriverType { SQLite, MySQL };
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// Describes what type of database user wants.
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enum class DesiredStorageType { StrictlyFileBased, StrictlyInMemory, FromSettings };
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explicit DatabaseDriver(QObject* parent = nullptr);
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QSqlDatabase threadSafeConnection(const QString& connection_name,
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DatabaseDriver::DesiredStorageType desired_type =
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DatabaseDriver::DesiredStorageType::FromSettings);
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// API.
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virtual QString location() const = 0;
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virtual QString humanDriverType() const = 0;
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virtual QString qtDriverCode() const = 0;
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virtual QString ddlFilePrefix() const = 0;
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virtual DriverType driverType() const = 0;
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virtual QString autoIncrementPrimaryKey() const = 0;
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virtual QString blob() const = 0;
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virtual bool vacuumDatabase() = 0;
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virtual bool saveDatabase() = 0;
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virtual void backupDatabase(const QString& backup_folder, const QString& backup_name) = 0;
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virtual bool initiateRestoration(const QString& database_package_file) = 0;
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virtual bool finishRestoration() = 0;
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virtual qint64 databaseDataSize() = 0;
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virtual QSqlDatabase connection(const QString& connection_name,
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DatabaseDriver::DesiredStorageType desired_type =
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DatabaseDriver::DesiredStorageType::FromSettings) = 0;
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protected:
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void updateDatabaseSchema(QSqlQuery& query, int source_db_schema_version, const QString& database_name = {});
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void setSchemaVersion(QSqlQuery& query, int new_schema_version, bool empty_table);
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QStringList prepareScript(const QString& base_sql_folder,
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const QString& sql_file,
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const QString& database_name = {});
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};
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#endif // DATABASEDRIVER_H
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