18 #ifndef QGSALGORITHMADDINCREMENTALFIELD_H 19 #define QGSALGORITHMADDINCREMENTALFIELD_H 36 QgsAddIncrementalFieldAlgorithm() =
default;
37 QString
name()
const override;
39 QStringList
tags()
const override;
40 QString
group()
const override;
41 QString
groupId()
const override;
48 void initParameters(
const QVariantMap &configuration = QVariantMap() )
override;
58 long long mStartValue = 0;
61 QHash< QgsAttributes, long long > mGroupedValues;
63 QStringList mGroupedFieldNames;
69 #endif // QGSNATIVEALGORITHMS_H virtual QString outputName() const =0
Returns the translated, user visible name for any layers created by this algorithm.
virtual QgsFields outputFields(const QgsFields &inputFields) const
Maps the input source fields (inputFields) to corresponding output fields generated by the algorithm...
Base class for providing feedback from a processing algorithm.
QList< QgsFeature > QgsFeatureList
virtual QString name() const =0
Returns the algorithm name, used for identifying the algorithm.
virtual QString group() const
Returns the name of the group this algorithm belongs to.
Container of fields for a vector layer.
virtual QStringList tags() const
Returns a list of tags which relate to the algorithm, and are used to assist users in searching for s...
The feature class encapsulates a single feature including its id, geometry and a list of field/values...
virtual QList< int > inputLayerTypes() const
Returns the valid input layer types for the source layer for this algorithm.
virtual QString shortHelpString() const
Returns a localised short helper string for the algorithm.
virtual QgsFeatureList processFeature(const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback)=0
Processes an individual input feature from the source.
virtual QgsProcessingAlgorithm * createInstance() const =0
Creates a new instance of the algorithm class.
Flag
Flags controlling how QgsProcessingFeatureSource fetches features.
virtual QString displayName() const =0
Returns the translated algorithm name, which should be used for any user-visible display of the algor...
virtual QgsProcessingFeatureSource::Flag sourceFlags() const
Returns the processing feature source flags to be used in the algorithm.
virtual void initParameters(const QVariantMap &configuration=QVariantMap())
Initializes any extra parameters added by the algorithm subclass.
virtual QString groupId() const
Returns the unique ID of the group this algorithm belongs to.
QList< int > QgsAttributeList
An abstract QgsProcessingAlgorithm base class for processing algorithms which operate "feature-by-fea...
Contains information about the context in which a processing algorithm is executed.
virtual bool prepareAlgorithm(const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback)
Prepares the algorithm to run using the specified parameters.