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| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
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| |
| #ifndef QSQLRELATIONALTABLEMODEL_H |
| #define QSQLRELATIONALTABLEMODEL_H |
| |
| #include <QtSql/qsqltablemodel.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| class Q_SQL_EXPORT QSqlRelation |
| { |
| public: |
| QSqlRelation() {} |
| QSqlRelation(const QString &aTableName, const QString &indexCol, |
| const QString &displayCol) |
| : tName(aTableName), iColumn(indexCol), dColumn(displayCol) {} |
| inline QString tableName() const |
| { return tName; } |
| inline QString indexColumn() const |
| { return iColumn; } |
| inline QString displayColumn() const |
| { return dColumn; } |
| inline bool isValid() const |
| { return !(tName.isEmpty() || iColumn.isEmpty() || dColumn.isEmpty()); } |
| private: |
| QString tName, iColumn, dColumn; |
| }; |
| |
| class QSqlRelationalTableModelPrivate; |
| |
| class Q_SQL_EXPORT QSqlRelationalTableModel: public QSqlTableModel |
| { |
| Q_OBJECT |
| |
| public: |
| enum JoinMode { |
| InnerJoin, |
| LeftJoin |
| }; |
| |
| explicit QSqlRelationalTableModel(QObject *parent = 0, |
| QSqlDatabase db = QSqlDatabase()); |
| virtual ~QSqlRelationalTableModel(); |
| |
| QVariant data(const QModelIndex &item, int role = Qt::DisplayRole) const Q_DECL_OVERRIDE; |
| bool setData(const QModelIndex &item, const QVariant &value, int role = Qt::EditRole) Q_DECL_OVERRIDE; |
| bool removeColumns(int column, int count, const QModelIndex &parent = QModelIndex()) Q_DECL_OVERRIDE; |
| |
| void clear() Q_DECL_OVERRIDE; |
| bool select() Q_DECL_OVERRIDE; |
| |
| void setTable(const QString &tableName) Q_DECL_OVERRIDE; |
| virtual void setRelation(int column, const QSqlRelation &relation); |
| QSqlRelation relation(int column) const; |
| virtual QSqlTableModel *relationModel(int column) const; |
| void setJoinMode( QSqlRelationalTableModel::JoinMode joinMode ); |
| |
| public Q_SLOTS: |
| void revertRow(int row) Q_DECL_OVERRIDE; |
| |
| protected: |
| QString selectStatement() const Q_DECL_OVERRIDE; |
| bool updateRowInTable(int row, const QSqlRecord &values) Q_DECL_OVERRIDE; |
| bool insertRowIntoTable(const QSqlRecord &values) Q_DECL_OVERRIDE; |
| QString orderByClause() const Q_DECL_OVERRIDE; |
| |
| private: |
| Q_DECLARE_PRIVATE(QSqlRelationalTableModel) |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QSQLRELATIONALTABLEMODEL_H |