QGIS API Documentation  3.2.0-Bonn (bc43194)
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1 /***************************************************************************
2  qgsvectorlayereditpassthrough.h
3  ---------------------
4  begin : Jan 12 2015
5  copyright : (C) 2015 by Sandro Mani
6  email : manisandro at gmail dot com
7  ***************************************************************************
8  * *
9  * This program is free software; you can redistribute it and/or modify *
10  * it under the terms of the GNU General Public License as published by *
11  * the Free Software Foundation; either version 2 of the License, or *
12  * (at your option) any later version. *
13  * *
14  ***************************************************************************/
18 #include "qgis_core.h"
21 class QgsVectorLayer;
23 class QgsTransaction;
30 {
32  public:
34  bool isModified() const override;
35  bool addFeature( QgsFeature &f ) override;
36  bool addFeatures( QgsFeatureList &features ) override;
37  bool deleteFeature( QgsFeatureId fid ) override;
38  bool deleteFeatures( const QgsFeatureIds &fids ) override;
39  bool changeGeometry( QgsFeatureId fid, const QgsGeometry &geom ) override;
40  bool changeAttributeValue( QgsFeatureId fid, int field, const QVariant &newValue, const QVariant &oldValue = QVariant() ) override;
47  bool changeAttributeValues( QgsFeatureId fid, const QgsAttributeMap &newValues, const QgsAttributeMap &oldValues ) override;
49  bool addAttribute( const QgsField &field ) override;
50  bool deleteAttribute( int attr ) override;
51  bool renameAttribute( int attr, const QString &newName ) override;
52  bool commitChanges( QStringList &commitErrors ) override;
53  void rollBack() override;
66  bool update( QgsTransaction *transaction, const QString &sql, const QString &name );
68  private:
69  bool mModified;
71  // utility function to avoid cpy/paste
72  bool modify( QgsVectorLayerUndoPassthroughCommand *cmd );
74 };
virtual bool renameAttribute(int attr, const QString &newName)
Renames an attribute field (but does not commit it)
virtual bool addAttribute(const QgsField &field)
Add an attribute field (but does not commit it) returns true if the field was added.
virtual bool addFeatures(QgsFeatureList &features)
Insert a copy of the given features into the layer (but does not commit it)
virtual bool addFeature(QgsFeature &f)
Adds a feature.
QSet< QgsFeatureId > QgsFeatureIds
Definition: qgsfeature.h:544
QList< QgsFeature > QgsFeatureList
Definition: qgsfeature.h:549
virtual void rollBack()
Stop editing and discard the edits.
A geometry is the spatial representation of a feature.
Definition: qgsgeometry.h:104
Undo command for vector layer in transaction group mode.
The feature class encapsulates a single feature including its id, geometry and a list of field/values...
Definition: qgsfeature.h:62
QMap< int, QVariant > QgsAttributeMap
Definition: qgsattributes.h:39
virtual bool isModified() const
Returns true if the provider has been modified since the last commit.
virtual bool changeGeometry(QgsFeatureId fid, const QgsGeometry &geom)
Change feature&#39;s geometry.
virtual bool deleteFeatures(const QgsFeatureIds &fid)
Deletes a set of features from the layer (but does not commit it)
Encapsulate a field in an attribute table or data source.
Definition: qgsfield.h:48
virtual bool changeAttributeValues(QgsFeatureId fid, const QgsAttributeMap &newValues, const QgsAttributeMap &oldValues)
Changes values of attributes (but does not commit it).
virtual bool commitChanges(QStringList &commitErrors)
Attempts to commit any changes to disk.
virtual bool deleteAttribute(int attr)
Delete an attribute field (but does not commit it)
This class allows including a set of layers in a database-side transaction, provided the layer data p...
virtual bool deleteFeature(QgsFeatureId fid)
Delete a feature from the layer (but does not commit it)
qint64 QgsFeatureId
Definition: qgsfeature.h:37
virtual bool changeAttributeValue(QgsFeatureId fid, int field, const QVariant &newValue, const QVariant &oldValue=QVariant())
Changed an attribute value (but does not commit it)
Represents a vector layer which manages a vector based data sets.