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Const correctness for QgsVectorLayer methods

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This commit is contained in:
Nyall Dawson 2016-07-11 12:06:06 +10:00
parent 0d84ca74c5
commit 2d50895d04
10 changed files with 71 additions and 64 deletions
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7
doc/api_break.dox
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@ -106,6 +106,13 @@ plugins calling this method will need to be updated.</li>
plugins calling this method will need to be updated.</li> plugins calling this method will need to be updated.</li>
</ul> </ul>
\subsection qgis_api_break_3_0_QgsVectorLayer QgsVectorLayer
<ul>
<li>commitErrors() now returns an object, rather than a reference. This has no effect on PyQGIS code.</li>
<li>subsetString() was made const. This has no effect on PyQGIS code, but c++ code implementing derived layer classes will need to update the signature of this method to match.</li>
</ul>
\subsection qgis_api_break_3_0_QgsVectorFileWriter QgsVectorFileWriter \subsection qgis_api_break_3_0_QgsVectorFileWriter QgsVectorFileWriter
<ul> <ul>

4
python/core/qgsaggregatecalculator.sip
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@ -60,11 +60,11 @@ class QgsAggregateCalculator
/** Constructor for QgsAggregateCalculator. /** Constructor for QgsAggregateCalculator.
* @param layer vector layer to calculate aggregate from * @param layer vector layer to calculate aggregate from
*/ */
QgsAggregateCalculator( QgsVectorLayer* layer ); QgsAggregateCalculator( const QgsVectorLayer* layer );
/** Returns the associated vector layer. /** Returns the associated vector layer.
*/ */
QgsVectorLayer* layer() const; const QgsVectorLayer* layer() const;
/** Sets all aggregate parameters from a parameter bundle. /** Sets all aggregate parameters from a parameter bundle.
* @param parameters aggregate parameters * @param parameters aggregate parameters

2
python/core/qgsrelationmanager.sip
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@ -79,7 +79,7 @@ class QgsRelationManager : QObject
* *
* @return A list of relations matching the given layer and fieldIdx. * @return A list of relations matching the given layer and fieldIdx.
*/ */
QList<QgsRelation> referencingRelations( QgsVectorLayer *layer = 0, int fieldIdx = -2 ) const; QList<QgsRelation> referencingRelations( const QgsVectorLayer *layer = 0, int fieldIdx = -2 ) const;
/** /**
* Get all relations where this layer is the referenced part (i.e. the parent table with the primary key being referenced from another layer). * Get all relations where this layer is the referenced part (i.e. the parent table with the primary key being referenced from another layer).

36
python/core/qgsvectorlayer.sip
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@ -207,7 +207,7 @@ class QgsVectorLayer : QgsMapLayer
* *
* @return The expression which will be used to preview features for this layer * @return The expression which will be used to preview features for this layer
*/ */
const QString displayExpression(); QString displayExpression() const;
/** Returns the data provider */ /** Returns the data provider */
QgsVectorDataProvider* dataProvider(); QgsVectorDataProvider* dataProvider();
@ -269,7 +269,7 @@ class QgsVectorLayer : QgsMapLayer
* *
* @note added in 2.9 * @note added in 2.9
*/ */
const QString expressionField( int index ); QString expressionField( int index ) const;
/** /**
* Changes the expression used to define an expression based (virtual) field * Changes the expression used to define an expression based (virtual) field
@ -297,7 +297,7 @@ class QgsVectorLayer : QgsMapLayer
* *
* @return See description * @return See description
*/ */
int selectedFeatureCount(); int selectedFeatureCount() const;
/** /**
* Select features found within the search rectangle (in layer's coordinates) * Select features found within the search rectangle (in layer's coordinates)
@ -364,7 +364,7 @@ class QgsVectorLayer : QgsMapLayer
void selectAll(); void selectAll();
/** Get all feature Ids */ /** Get all feature Ids */
QgsFeatureIds allFeatureIds(); QgsFeatureIds allFeatureIds() const;
/** /**
* Invert selection of features found within the search rectangle (in layer's coordinates) * Invert selection of features found within the search rectangle (in layer's coordinates)
@ -383,7 +383,7 @@ class QgsVectorLayer : QgsMapLayer
* @see selectedFeaturesIds() * @see selectedFeaturesIds()
* @see selectedFeaturesIterator() which is more memory friendly when handling large selections * @see selectedFeaturesIterator() which is more memory friendly when handling large selections
*/ */
QgsFeatureList selectedFeatures(); QgsFeatureList selectedFeatures() const;
/** /**
* Get an iterator of the selected features * Get an iterator of the selected features
@ -396,7 +396,7 @@ class QgsVectorLayer : QgsMapLayer
* @see selectedFeaturesIds() * @see selectedFeaturesIds()
* @see selectedFeatures() * @see selectedFeatures()
*/ */
QgsFeatureIterator selectedFeaturesIterator( QgsFeatureRequest request = QgsFeatureRequest() ); QgsFeatureIterator selectedFeaturesIterator( QgsFeatureRequest request = QgsFeatureRequest() ) const;
/** /**
* Return reference to identifiers of selected features * Return reference to identifiers of selected features
@ -417,7 +417,7 @@ class QgsVectorLayer : QgsMapLayer
void setSelectedFeatures( const QgsFeatureIds &ids ) /Deprecated/; void setSelectedFeatures( const QgsFeatureIds &ids ) /Deprecated/;
/** Returns the bounding box of the selected features. If there is no selection, QgsRectangle(0,0,0,0) is returned */ /** Returns the bounding box of the selected features. If there is no selection, QgsRectangle(0,0,0,0) is returned */
QgsRectangle boundingBoxOfSelected(); QgsRectangle boundingBoxOfSelected() const;
/** Returns whether the layer contains labels which are enabled and should be drawn. /** Returns whether the layer contains labels which are enabled and should be drawn.
* @return true if layer contains enabled labels * @return true if layer contains enabled labels
@ -573,7 +573,7 @@ class QgsVectorLayer : QgsMapLayer
* @param symbol the symbol * @param symbol the symbol
* @return number of features rendered by symbol or -1 if failed or counts are not available * @return number of features rendered by symbol or -1 if failed or counts are not available
*/ */
long featureCount( QgsSymbolV2* symbol ); long featureCount( QgsSymbolV2* symbol ) const;
/** /**
* Update the data source of the layer. The layer's renderer and legend will be preserved only * Update the data source of the layer. The layer's renderer and legend will be preserved only
@ -607,7 +607,7 @@ class QgsVectorLayer : QgsMapLayer
* Get the string (typically sql) used to define a subset of the layer * Get the string (typically sql) used to define a subset of the layer
* @return The subset string or QString::null if not implemented by the provider * @return The subset string or QString::null if not implemented by the provider
*/ */
virtual QString subsetString(); virtual QString subsetString() const;
/** /**
* Query the layer for features specified in request. * Query the layer for features specified in request.
@ -1085,7 +1085,7 @@ class QgsVectorLayer : QgsMapLayer
* that the user has some chance of repairing the damage cleanly. * that the user has some chance of repairing the damage cleanly.
*/ */
bool commitChanges(); bool commitChanges();
const QStringList &commitErrors(); QStringList commitErrors() const;
/** Stop editing and discard the edits /** Stop editing and discard the edits
* @param deleteBuffer whether to delete editing buffer * @param deleteBuffer whether to delete editing buffer
@ -1235,7 +1235,7 @@ class QgsVectorLayer : QgsMapLayer
RangeData range( int idx ) /Deprecated/; RangeData range( int idx ) /Deprecated/;
/** Access value relation widget data */ /** Access value relation widget data */
ValueRelationData valueRelation( int idx ); ValueRelationData valueRelation( int idx ) const;
/** /**
* Get relations, where the foreign key is on this layer * Get relations, where the foreign key is on this layer
@ -1243,7 +1243,7 @@ class QgsVectorLayer : QgsMapLayer
* @param idx Only get relations, where idx forms part of the foreign key * @param idx Only get relations, where idx forms part of the foreign key
* @return A list of relations * @return A list of relations
*/ */
QList<QgsRelation> referencingRelations( int idx ); QList<QgsRelation> referencingRelations( int idx ) const;
/** /**
* Access date format * Access date format
@ -1324,13 +1324,13 @@ class QgsVectorLayer : QgsMapLayer
* @param uniqueValues out: result list * @param uniqueValues out: result list
* @param limit maximum number of values to return (-1 if unlimited) * @param limit maximum number of values to return (-1 if unlimited)
*/ */
void uniqueValues( int index, QList<QVariant> &uniqueValues /Out/, int limit = -1 ); void uniqueValues( int index, QList<QVariant> &uniqueValues /Out/, int limit = -1 ) const;
/** Returns minimum value for an attribute column or invalid variant in case of error */ /** Returns minimum value for an attribute column or invalid variant in case of error */
QVariant minimumValue( int index ); QVariant minimumValue( int index ) const;
/** Returns maximum value for an attribute column or invalid variant in case of error */ /** Returns maximum value for an attribute column or invalid variant in case of error */
QVariant maximumValue( int index ); QVariant maximumValue( int index ) const;
/** Calculates an aggregated value from the layer's features. /** Calculates an aggregated value from the layer's features.
* @param aggregate aggregate to calculate * @param aggregate aggregate to calculate
@ -1345,7 +1345,7 @@ class QgsVectorLayer : QgsMapLayer
const QString& fieldOrExpression, const QString& fieldOrExpression,
const QgsAggregateCalculator::AggregateParameters& parameters = QgsAggregateCalculator::AggregateParameters(), const QgsAggregateCalculator::AggregateParameters& parameters = QgsAggregateCalculator::AggregateParameters(),
QgsExpressionContext* context = nullptr, QgsExpressionContext* context = nullptr,
bool* ok = nullptr ); bool* ok = nullptr ) const;
/** Fetches all values from a specified field name or expression. /** Fetches all values from a specified field name or expression.
* @param fieldOrExpression field name or an expression string * @param fieldOrExpression field name or an expression string
@ -1355,7 +1355,7 @@ class QgsVectorLayer : QgsMapLayer
* @note added in QGIS 2.9 * @note added in QGIS 2.9
* @see getDoubleValues * @see getDoubleValues
*/ */
QList< QVariant > getValues( const QString &fieldOrExpression, bool &ok, bool selectedOnly = false ); QList< QVariant > getValues( const QString &fieldOrExpression, bool &ok, bool selectedOnly = false ) const;
/** Fetches all double values from a specified field name or expression. Null values or /** Fetches all double values from a specified field name or expression. Null values or
* invalid expression results are skipped. * invalid expression results are skipped.
@ -1367,7 +1367,7 @@ class QgsVectorLayer : QgsMapLayer
* @note added in QGIS 2.9 * @note added in QGIS 2.9
* @see getValues * @see getValues
*/ */
QList< double > getDoubleValues( const QString &fieldOrExpression, bool &ok, bool selectedOnly = false, int* nullCount = 0 ); QList< double > getDoubleValues( const QString &fieldOrExpression, bool &ok, bool selectedOnly = false, int* nullCount = 0 ) const;
/** Set the blending mode used for rendering each feature */ /** Set the blending mode used for rendering each feature */
void setFeatureBlendMode( QPainter::CompositionMode blendMode ); void setFeatureBlendMode( QPainter::CompositionMode blendMode );

4
src/core/qgsaggregatecalculator.cpp
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@ -23,13 +23,13 @@
QgsAggregateCalculator::QgsAggregateCalculator( QgsVectorLayer* layer ) QgsAggregateCalculator::QgsAggregateCalculator( const QgsVectorLayer* layer )
: mLayer( layer ) : mLayer( layer )
{ {
} }
QgsVectorLayer*QgsAggregateCalculator::layer() const const QgsVectorLayer* QgsAggregateCalculator::layer() const
{ {
return mLayer; return mLayer;
} }

6
src/core/qgsaggregatecalculator.h
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@ -86,11 +86,11 @@ class CORE_EXPORT QgsAggregateCalculator
/** Constructor for QgsAggregateCalculator. /** Constructor for QgsAggregateCalculator.
* @param layer vector layer to calculate aggregate from * @param layer vector layer to calculate aggregate from
*/ */
QgsAggregateCalculator( QgsVectorLayer* layer ); QgsAggregateCalculator( const QgsVectorLayer* layer );
/** Returns the associated vector layer. /** Returns the associated vector layer.
*/ */
QgsVectorLayer* layer() const; const QgsVectorLayer* layer() const;
/** Sets all aggregate parameters from a parameter bundle. /** Sets all aggregate parameters from a parameter bundle.
* @param parameters aggregate parameters * @param parameters aggregate parameters
@ -140,7 +140,7 @@ class CORE_EXPORT QgsAggregateCalculator
private: private:
//! Source layer //! Source layer
QgsVectorLayer* mLayer; const QgsVectorLayer* mLayer;
//! Filter expression, or empty for no filter //! Filter expression, or empty for no filter
QString mFilterExpression; QString mFilterExpression;

2
src/core/qgsrelationmanager.cpp
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@ -93,7 +93,7 @@ void QgsRelationManager::clear()
emit changed(); emit changed();
} }
QList<QgsRelation> QgsRelationManager::referencingRelations( QgsVectorLayer* layer, int fieldIdx ) const QList<QgsRelation> QgsRelationManager::referencingRelations( const QgsVectorLayer* layer, int fieldIdx ) const
{ {
if ( !layer ) if ( !layer )
{ {

2
src/core/qgsrelationmanager.h
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@ -106,7 +106,7 @@ class CORE_EXPORT QgsRelationManager : public QObject
* *
* @return A list of relations matching the given layer and fieldIdx. * @return A list of relations matching the given layer and fieldIdx.
*/ */
QList<QgsRelation> referencingRelations( QgsVectorLayer *layer = nullptr, int fieldIdx = -2 ) const; QList<QgsRelation> referencingRelations( const QgsVectorLayer* layer = nullptr, int fieldIdx = -2 ) const;
/** /**
* Get all relations where this layer is the referenced part (i.e. the parent table with the primary key being referenced from another layer). * Get all relations where this layer is the referenced part (i.e. the parent table with the primary key being referenced from another layer).

36
src/core/qgsvectorlayer.cpp
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@ -581,7 +581,7 @@ void QgsVectorLayer::selectAll()
selectByIds( allFeatureIds() ); selectByIds( allFeatureIds() );
} }
QgsFeatureIds QgsVectorLayer::allFeatureIds() QgsFeatureIds QgsVectorLayer::allFeatureIds() const
{ {
QgsFeatureIterator fit = getFeatures( QgsFeatureRequest() QgsFeatureIterator fit = getFeatures( QgsFeatureRequest()
.setFlags( QgsFeatureRequest::NoGeometry ) .setFlags( QgsFeatureRequest::NoGeometry )
@ -695,7 +695,7 @@ QGis::WkbType QgsVectorLayer::wkbType() const
return mWkbType; return mWkbType;
} }
QgsRectangle QgsVectorLayer::boundingBoxOfSelected() QgsRectangle QgsVectorLayer::boundingBoxOfSelected() const
{ {
if ( !mValid || mSelectedFeatureIds.isEmpty() ) //no selected features if ( !mValid || mSelectedFeatureIds.isEmpty() ) //no selected features
{ {
@ -781,7 +781,7 @@ bool QgsVectorLayer::diagramsEnabled() const
return false; return false;
} }
long QgsVectorLayer::featureCount( QgsSymbolV2* symbol ) long QgsVectorLayer::featureCount( QgsSymbolV2* symbol ) const
{ {
if ( !mSymbolFeatureCounted ) if ( !mSymbolFeatureCounted )
return -1; return -1;
@ -1052,7 +1052,7 @@ QgsRectangle QgsVectorLayer::extent() const
return rect; return rect;
} }
QString QgsVectorLayer::subsetString() QString QgsVectorLayer::subsetString() const
{ {
if ( !mValid || !mDataProvider ) if ( !mValid || !mDataProvider )
{ {
@ -2545,7 +2545,7 @@ bool QgsVectorLayer::commitChanges()
return success; return success;
} }
const QStringList &QgsVectorLayer::commitErrors() QStringList QgsVectorLayer::commitErrors() const
{ {
return mCommitErrors; return mCommitErrors;
} }
@ -2601,7 +2601,7 @@ void QgsVectorLayer::setSelectedFeatures( const QgsFeatureIds& ids )
selectByIds( ids, SetSelection ); selectByIds( ids, SetSelection );
} }
int QgsVectorLayer::selectedFeatureCount() int QgsVectorLayer::selectedFeatureCount() const
{ {
return mSelectedFeatureIds.size(); return mSelectedFeatureIds.size();
} }
@ -2611,7 +2611,7 @@ const QgsFeatureIds& QgsVectorLayer::selectedFeaturesIds() const
return mSelectedFeatureIds; return mSelectedFeatureIds;
} }
QgsFeatureList QgsVectorLayer::selectedFeatures() QgsFeatureList QgsVectorLayer::selectedFeatures() const
{ {
QgsFeatureList features; QgsFeatureList features;
QgsFeature f; QgsFeature f;
@ -2639,7 +2639,7 @@ QgsFeatureList QgsVectorLayer::selectedFeatures()
return features; return features;
} }
QgsFeatureIterator QgsVectorLayer::selectedFeaturesIterator( QgsFeatureRequest request ) QgsFeatureIterator QgsVectorLayer::selectedFeaturesIterator( QgsFeatureRequest request ) const
{ {
if ( mSelectedFeatureIds.isEmpty() ) if ( mSelectedFeatureIds.isEmpty() )
return QgsFeatureIterator(); return QgsFeatureIterator();
@ -2855,7 +2855,7 @@ void QgsVectorLayer::setDisplayExpression( const QString &displayExpression )
mDisplayExpression = displayExpression; mDisplayExpression = displayExpression;
} }
const QString QgsVectorLayer::displayExpression() QString QgsVectorLayer::displayExpression() const
{ {
return mDisplayExpression; return mDisplayExpression;
} }
@ -3084,7 +3084,7 @@ void QgsVectorLayer::removeExpressionField( int index )
emit attributeDeleted( index ); emit attributeDeleted( index );
} }
QString QgsVectorLayer::expressionField( int index ) QString QgsVectorLayer::expressionField( int index ) const
{ {
int oi = mUpdatedFields.fieldOriginIndex( index ); int oi = mUpdatedFields.fieldOriginIndex( index );
return mExpressionFieldBuffer->expressions().value( oi ).expression; return mExpressionFieldBuffer->expressions().value( oi ).expression;
@ -3132,7 +3132,7 @@ void QgsVectorLayer::createJoinCaches() const
} }
} }
void QgsVectorLayer::uniqueValues( int index, QList<QVariant> &uniqueValues, int limit ) void QgsVectorLayer::uniqueValues( int index, QList<QVariant> &uniqueValues, int limit ) const
{ {
uniqueValues.clear(); uniqueValues.clear();
if ( !mDataProvider ) if ( !mDataProvider )
@ -3221,7 +3221,7 @@ void QgsVectorLayer::uniqueValues( int index, QList<QVariant> &uniqueValues, int
Q_ASSERT_X( false, "QgsVectorLayer::uniqueValues()", "Unknown source of the field!" ); Q_ASSERT_X( false, "QgsVectorLayer::uniqueValues()", "Unknown source of the field!" );
} }
QVariant QgsVectorLayer::minimumValue( int index ) QVariant QgsVectorLayer::minimumValue( int index ) const
{ {
if ( !mDataProvider ) if ( !mDataProvider )
{ {
@ -3281,7 +3281,7 @@ QVariant QgsVectorLayer::minimumValue( int index )
return QVariant(); return QVariant();
} }
QVariant QgsVectorLayer::maximumValue( int index ) QVariant QgsVectorLayer::maximumValue( int index ) const
{ {
if ( !mDataProvider ) if ( !mDataProvider )
{ {
@ -3339,7 +3339,7 @@ QVariant QgsVectorLayer::maximumValue( int index )
} }
QVariant QgsVectorLayer::aggregate( QgsAggregateCalculator::Aggregate aggregate, const QString& fieldOrExpression, QVariant QgsVectorLayer::aggregate( QgsAggregateCalculator::Aggregate aggregate, const QString& fieldOrExpression,
const QgsAggregateCalculator::AggregateParameters& parameters, QgsExpressionContext* context, bool* ok ) const QgsAggregateCalculator::AggregateParameters& parameters, QgsExpressionContext* context, bool* ok ) const
{ {
if ( ok ) if ( ok )
*ok = false; *ok = false;
@ -3376,7 +3376,7 @@ QVariant QgsVectorLayer::aggregate( QgsAggregateCalculator::Aggregate aggregate,
return c.calculate( aggregate, fieldOrExpression, context, ok ); return c.calculate( aggregate, fieldOrExpression, context, ok );
} }
QList<QVariant> QgsVectorLayer::getValues( const QString &fieldOrExpression, bool& ok, bool selectedOnly ) QList<QVariant> QgsVectorLayer::getValues( const QString &fieldOrExpression, bool& ok, bool selectedOnly ) const
{ {
QList<QVariant> values; QList<QVariant> values;
@ -3441,7 +3441,7 @@ QList<QVariant> QgsVectorLayer::getValues( const QString &fieldOrExpression, boo
return values; return values;
} }
QList<double> QgsVectorLayer::getDoubleValues( const QString &fieldOrExpression, bool& ok, bool selectedOnly, int* nullCount ) QList<double> QgsVectorLayer::getDoubleValues( const QString &fieldOrExpression, bool& ok, bool selectedOnly, int* nullCount ) const
{ {
QList<double> values; QList<double> values;
@ -4034,7 +4034,7 @@ void QgsVectorLayer::onFeatureDeleted( QgsFeatureId fid )
emit featureDeleted( fid ); emit featureDeleted( fid );
} }
QgsVectorLayer::ValueRelationData QgsVectorLayer::valueRelation( int idx ) QgsVectorLayer::ValueRelationData QgsVectorLayer::valueRelation( int idx ) const
{ {
if ( mEditFormConfig->widgetType( idx ) == "ValueRelation" ) if ( mEditFormConfig->widgetType( idx ) == "ValueRelation" )
{ {
@ -4055,7 +4055,7 @@ QgsVectorLayer::ValueRelationData QgsVectorLayer::valueRelation( int idx )
} }
} }
QList<QgsRelation> QgsVectorLayer::referencingRelations( int idx ) QList<QgsRelation> QgsVectorLayer::referencingRelations( int idx ) const
{ {
return QgsProject::instance()->relationManager()->referencingRelations( this, idx ); return QgsProject::instance()->relationManager()->referencingRelations( this, idx );
} }

36
src/core/qgsvectorlayer.h
View File

@ -572,7 +572,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* *
* @return The expression which will be used to preview features for this layer * @return The expression which will be used to preview features for this layer
*/ */
const QString displayExpression(); QString displayExpression() const;
/** Returns the data provider */ /** Returns the data provider */
QgsVectorDataProvider* dataProvider(); QgsVectorDataProvider* dataProvider();
@ -634,7 +634,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* *
* @note added in 2.9 * @note added in 2.9
*/ */
QString expressionField( int index ); QString expressionField( int index ) const;
/** /**
* Changes the expression used to define an expression based (virtual) field * Changes the expression used to define an expression based (virtual) field
@ -668,7 +668,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* *
* @return See description * @return See description
*/ */
int selectedFeatureCount(); int selectedFeatureCount() const;
/** /**
* Select features found within the search rectangle (in layer's coordinates) * Select features found within the search rectangle (in layer's coordinates)
@ -735,7 +735,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
void selectAll(); void selectAll();
/** Get all feature Ids */ /** Get all feature Ids */
QgsFeatureIds allFeatureIds(); QgsFeatureIds allFeatureIds() const;
/** /**
* Invert selection of features found within the search rectangle (in layer's coordinates) * Invert selection of features found within the search rectangle (in layer's coordinates)
@ -754,7 +754,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* @see selectedFeaturesIds() * @see selectedFeaturesIds()
* @see selectedFeaturesIterator() which is more memory friendly when handling large selections * @see selectedFeaturesIterator() which is more memory friendly when handling large selections
*/ */
QgsFeatureList selectedFeatures(); QgsFeatureList selectedFeatures() const;
/** /**
* Get an iterator of the selected features * Get an iterator of the selected features
@ -767,7 +767,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* @see selectedFeaturesIds() * @see selectedFeaturesIds()
* @see selectedFeatures() * @see selectedFeatures()
*/ */
QgsFeatureIterator selectedFeaturesIterator( QgsFeatureRequest request = QgsFeatureRequest() ); QgsFeatureIterator selectedFeaturesIterator( QgsFeatureRequest request = QgsFeatureRequest() ) const;
/** /**
* Return reference to identifiers of selected features * Return reference to identifiers of selected features
@ -788,7 +788,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
Q_DECL_DEPRECATED void setSelectedFeatures( const QgsFeatureIds &ids ); Q_DECL_DEPRECATED void setSelectedFeatures( const QgsFeatureIds &ids );
/** Returns the bounding box of the selected features. If there is no selection, QgsRectangle(0,0,0,0) is returned */ /** Returns the bounding box of the selected features. If there is no selection, QgsRectangle(0,0,0,0) is returned */
QgsRectangle boundingBoxOfSelected(); QgsRectangle boundingBoxOfSelected() const;
/** Returns whether the layer contains labels which are enabled and should be drawn. /** Returns whether the layer contains labels which are enabled and should be drawn.
* @return true if layer contains enabled labels * @return true if layer contains enabled labels
@ -944,7 +944,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* @param symbol the symbol * @param symbol the symbol
* @return number of features rendered by symbol or -1 if failed or counts are not available * @return number of features rendered by symbol or -1 if failed or counts are not available
*/ */
long featureCount( QgsSymbolV2* symbol ); long featureCount( QgsSymbolV2* symbol ) const;
/** /**
* Update the data source of the layer. The layer's renderer and legend will be preserved only * Update the data source of the layer. The layer's renderer and legend will be preserved only
@ -978,7 +978,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* Get the string (typically sql) used to define a subset of the layer * Get the string (typically sql) used to define a subset of the layer
* @return The subset string or QString::null if not implemented by the provider * @return The subset string or QString::null if not implemented by the provider
*/ */
virtual QString subsetString(); virtual QString subsetString() const;
/** /**
* Query the layer for features specified in request. * Query the layer for features specified in request.
@ -1474,7 +1474,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* that the user has some chance of repairing the damage cleanly. * that the user has some chance of repairing the damage cleanly.
*/ */
bool commitChanges(); bool commitChanges();
const QStringList &commitErrors(); QStringList commitErrors() const;
/** Stop editing and discard the edits /** Stop editing and discard the edits
* @param deleteBuffer whether to delete editing buffer * @param deleteBuffer whether to delete editing buffer
@ -1624,7 +1624,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
Q_DECL_DEPRECATED RangeData range( int idx ); Q_DECL_DEPRECATED RangeData range( int idx );
/** Access value relation widget data */ /** Access value relation widget data */
ValueRelationData valueRelation( int idx ); ValueRelationData valueRelation( int idx ) const;
/** /**
* Get relations, where the foreign key is on this layer * Get relations, where the foreign key is on this layer
@ -1632,7 +1632,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* @param idx Only get relations, where idx forms part of the foreign key * @param idx Only get relations, where idx forms part of the foreign key
* @return A list of relations * @return A list of relations
*/ */
QList<QgsRelation> referencingRelations( int idx ); QList<QgsRelation> referencingRelations( int idx ) const;
/** /**
* Access date format * Access date format
@ -1717,13 +1717,13 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* @param uniqueValues out: result list * @param uniqueValues out: result list
* @param limit maximum number of values to return (-1 if unlimited) * @param limit maximum number of values to return (-1 if unlimited)
*/ */
void uniqueValues( int index, QList<QVariant> &uniqueValues, int limit = -1 ); void uniqueValues( int index, QList<QVariant> &uniqueValues, int limit = -1 ) const;
/** Returns minimum value for an attribute column or invalid variant in case of error */ /** Returns minimum value for an attribute column or invalid variant in case of error */
QVariant minimumValue( int index ); QVariant minimumValue( int index ) const;
/** Returns maximum value for an attribute column or invalid variant in case of error */ /** Returns maximum value for an attribute column or invalid variant in case of error */
QVariant maximumValue( int index ); QVariant maximumValue( int index ) const;
/** Calculates an aggregated value from the layer's features. /** Calculates an aggregated value from the layer's features.
* @param aggregate aggregate to calculate * @param aggregate aggregate to calculate
@ -1738,7 +1738,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
const QString& fieldOrExpression, const QString& fieldOrExpression,
const QgsAggregateCalculator::AggregateParameters& parameters = QgsAggregateCalculator::AggregateParameters(), const QgsAggregateCalculator::AggregateParameters& parameters = QgsAggregateCalculator::AggregateParameters(),
QgsExpressionContext* context = nullptr, QgsExpressionContext* context = nullptr,
bool* ok = nullptr ); bool* ok = nullptr ) const;
/** Fetches all values from a specified field name or expression. /** Fetches all values from a specified field name or expression.
* @param fieldOrExpression field name or an expression string * @param fieldOrExpression field name or an expression string
@ -1748,7 +1748,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* @note added in QGIS 2.9 * @note added in QGIS 2.9
* @see getDoubleValues * @see getDoubleValues
*/ */
QList< QVariant > getValues( const QString &fieldOrExpression, bool &ok, bool selectedOnly = false ); QList< QVariant > getValues( const QString &fieldOrExpression, bool &ok, bool selectedOnly = false ) const;
/** Fetches all double values from a specified field name or expression. Null values or /** Fetches all double values from a specified field name or expression. Null values or
* invalid expression results are skipped. * invalid expression results are skipped.
@ -1760,7 +1760,7 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
* @note added in QGIS 2.9 * @note added in QGIS 2.9
* @see getValues * @see getValues
*/ */
QList< double > getDoubleValues( const QString &fieldOrExpression, bool &ok, bool selectedOnly = false, int* nullCount = nullptr ); QList< double > getDoubleValues( const QString &fieldOrExpression, bool &ok, bool selectedOnly = false, int* nullCount = nullptr ) const;
/** Set the blending mode used for rendering each feature */ /** Set the blending mode used for rendering each feature */
void setFeatureBlendMode( QPainter::CompositionMode blendMode ); void setFeatureBlendMode( QPainter::CompositionMode blendMode );