foreignkeyconstraint.h

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/*
    SPDX-License-Identifier: GPL-2.0-or-later
    SPDX-FileCopyrightText: 2002-2021 Umbrello UML Modeller Authors <umbrello-devel@kde.org>
*/
 
#ifndef FOREIGNKEYCONSTRAINT_H
#define FOREIGNKEYCONSTRAINT_H
 
// appl includes
#include "basictypes.h"
#include "entityconstraint.h"
 
// qt includes
#include <QMap>
 
//forward declarations
class UMLEntityAttribute;
class UMLEntity;
 
class UMLForeignKeyConstraint : public UMLEntityConstraint
{
     Q_OBJECT
 
public:
 
    enum UpdateDeleteAction { uda_NoAction = 0,
                              uda_Restrict,
                              uda_Cascade,
                              uda_SetNull,
                              uda_SetDefault };
 
    UMLForeignKeyConstraint(UMLObject *parent, const QString& name,
                            Uml::ID::Type id = Uml::ID::None);
    explicit UMLForeignKeyConstraint(UMLObject *parent);
 
    bool operator==(const UMLForeignKeyConstraint &rhs) const;
 
    virtual ~UMLForeignKeyConstraint();
 
    virtual void copyInto(UMLObject *lhs) const;
 
    virtual UMLObject* clone() const;
 
    QString toString(Uml::SignatureType::Enum sig = Uml::SignatureType::NoSig,
                     bool withStereotype=false) const;
 
    void setReferencedEntity(UMLEntity* ent);
    UMLEntity* getReferencedEntity() const;
 
    void saveToXMI(QXmlStreamWriter& writer);
 
    virtual bool showPropertiesDialog(QWidget* parent = 0);
 
    bool addEntityAttributePair(UMLEntityAttribute* pAttr, UMLEntityAttribute* rAttr);
 
    bool removeEntityAttributePair(UMLEntityAttribute* /*key*/ pAttr);
 
    bool hasEntityAttributePair(UMLEntityAttribute* pAttr, UMLEntityAttribute* rAttr) const;
 
    QMap<UMLEntityAttribute*, UMLEntityAttribute*> getEntityAttributePairs();
 
    void setDeleteAction(UpdateDeleteAction uda);
    UpdateDeleteAction getDeleteAction() const;
 
    void setUpdateAction(UpdateDeleteAction uda);
    UpdateDeleteAction getUpdateAction() const;
 
    void clearMappings();
 
    bool resolveRef();
 
signals:
    void sigReferencedEntityChanged();
 
private slots:
    void slotReferencedEntityChanged();
 
protected:
    bool load1(QDomElement & element);
 
private:
 
    Uml::ID::Type m_pReferencedEntityID;  
 
    QMap<UMLEntityAttribute*, Uml::ID::Type> m_pEntityAttributeIDMap;
 
    void init();
 
    UMLEntity* m_ReferencedEntity;  
 
    QMap<UMLEntityAttribute*, UMLEntityAttribute*> m_AttributeMap;
 
    UpdateDeleteAction m_UpdateAction;  
    UpdateDeleteAction m_DeleteAction;  
};
 
#endif