qgsvirtuallayerdefinition.h

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/***************************************************************************
                qgsvirtuallayerdefinition.h
begin                : Feb, 2015
copyright            : (C) 2015 Hugo Mercier, Oslandia
email                : hugo dot mercier at oslandia dot com
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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 QGSVIRTUALLAYERDEFINITION_H
#define QGSVIRTUALLAYERDEFINITION_H
 
#include "qgis_core.h"
#include "qgsfields.h"
#include "qgswkbtypes.h"
 
class CORE_EXPORT QgsVirtualLayerDefinition
{
  public:
 
    class CORE_EXPORT SourceLayer
    {
      public:
        SourceLayer( const QString &name, const QString &ref )
          : mName( name )
          , mRef( ref )
        {}
        SourceLayer( const QString &name, const QString &source, const QString &provider, const QString &encoding )
          : mName( name )
          , mSource( source )
          , mProvider( provider )
          , mEncoding( encoding )
        {}
 
        bool isReferenced() const { return !mRef.isEmpty(); }
 
        QString reference() const { return mRef; }
 
        QString name() const { return mName; }
 
        QString provider() const { return mProvider; }
 
        QString source() const { return mSource; }
 
        QString encoding() const { return mEncoding; }
 
      private:
        QString mName;
        QString mSource;
        QString mProvider;
        QString mRef;
        QString mEncoding;
    };
 
    QgsVirtualLayerDefinition( const QString &filePath = "" );
 
    static QgsVirtualLayerDefinition fromUrl( const QUrl &url );
 
    QUrl toUrl() const;
 
    QString toString() const;
 
    void addSource( const QString &name, const QString &ref );
 
    void addSource( const QString &name, const QString &source, const QString &provider, const QString &encoding = "" );
 
    typedef QList<QgsVirtualLayerDefinition::SourceLayer> SourceLayers;
 
    const QgsVirtualLayerDefinition::SourceLayers &sourceLayers() const { return mSourceLayers; }
 
    QString query() const { return mQuery; }
    void setQuery( const QString &query ) { mQuery = query; }
 
    QString filePath() const { return mFilePath; }
    void setFilePath( const QString &filePath ) { mFilePath = filePath; }
 
    QString uid() const { return mUid; }
    void setUid( const QString &uid ) { mUid = uid; }
 
    void setLazy( bool lazy ) { mLazy = lazy; }
 
    bool isLazy() const { return mLazy; }
 
    QString geometryField() const { return mGeometryField; }
    void setGeometryField( const QString &geometryField ) { mGeometryField = geometryField; }
 
    QgsWkbTypes::Type geometryWkbType() const { return mGeometryWkbType; }
    void setGeometryWkbType( QgsWkbTypes::Type t ) { mGeometryWkbType = t; }
 
    long geometrySrid() const { return mGeometrySrid; }
    void setGeometrySrid( long srid ) { mGeometrySrid = srid; }
 
    QgsFields fields() const { return mFields; }
    void setFields( const QgsFields &fields ) { mFields = fields; }
 
    bool hasSourceLayer( const QString &name ) const;
 
    bool hasReferencedLayers() const;
 
    bool hasDefinedGeometry() const
    {
      return geometryWkbType() != QgsWkbTypes::NoGeometry && geometryWkbType() != QgsWkbTypes::Unknown;
    }
 
    QString subsetString() const;
 
    void setSubsetString( const QString &subsetString );
 
  private:
    SourceLayers mSourceLayers;
    QString mQuery;
    QString mUid;
    QString mGeometryField;
    QString mFilePath;
    QgsFields mFields;
    bool mLazy = false;
    QgsWkbTypes::Type mGeometryWkbType = QgsWkbTypes::Unknown;
    long mGeometrySrid = 0;
    QString mSubsetString;
};
 
// clazy:excludeall=qstring-allocations
 
#endif