qgsweakrelation.h

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/***************************************************************************
  qgsweakrelation.h - QgsWeakRelation

 ---------------------
 begin                : 5.12.2019
 copyright            : (C) 2019 by Alessandro Pasotti
 email                : elpaso at itopen dot it
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
#ifndef QGSWEAKRELATION_H
#define QGSWEAKRELATION_H

#define SIP_NO_FILE

#include "qgis_core.h"
#include "qgsrelation.h"
#include "qgsvectorlayerref.h"

class CORE_EXPORT QgsWeakRelation
{
  public:

    QgsWeakRelation( const QString &relationId,
                     const QString &relationName,
                     const QgsRelation::RelationStrength strength,
                     const QString &referencingLayerId,
                     const QString &referencingLayerName,
                     const QString &referencingLayerSource,
                     const QString &referencingLayerProviderKey,
                     const QString &referencedLayerId,
                     const QString &referencedLayerName,
                     const QString &referencedLayerSource,
                     const QString &referencedLayerProviderKey,
                     const QList<QgsRelation::FieldPair> &fieldPairs
                   );

    QgsRelation resolvedRelation( const QgsProject *project, QgsVectorLayerRef::MatchType matchType = QgsVectorLayerRef::MatchType::All ) const;

    QgsVectorLayerRef referencingLayer() const;

    QgsVectorLayerRef referencedLayer() const;

    QgsRelation::RelationStrength strength() const;

    QList<QgsRelation::FieldPair> fieldPairs() const;

  private:

    QgsVectorLayerRef mReferencingLayer;
    QgsVectorLayerRef mReferencedLayer;
    QString mRelationId;
    QString mRelationName;
    QgsRelation::RelationStrength mStrength = QgsRelation::RelationStrength::Association;
    QList<QgsRelation::FieldPair> mFieldPairs;

    friend class TestQgsWeakRelation;

};

#endif // QGSWEAKRELATION_H