27 auto callback = [ = ](
const QgsFeature & feature )
30 mFeedback->reportError( QObject::tr(
"Encountered a transform error when reprojecting feature with id %1." ).arg( feature.id() ) );
32 mTransformErrorCallback = callback;
37 for (
auto it = mLayersToLoadOnCompletion.constBegin(); it != mLayersToLoadOnCompletion.constEnd(); ++it )
39 delete it.value().postProcessor();
45 for (
auto it = mLayersToLoadOnCompletion.constBegin(); it != mLayersToLoadOnCompletion.constEnd(); ++it )
47 if ( !layers.contains( it.key() ) || layers.value( it.key() ).postProcessor() != it.value().postProcessor() )
48 delete it.value().postProcessor();
50 mLayersToLoadOnCompletion = layers;
55 if ( mLayersToLoadOnCompletion.contains( layer ) && mLayersToLoadOnCompletion.value( layer ).postProcessor() != details.
postProcessor() )
56 delete mLayersToLoadOnCompletion.value( layer ).postProcessor();
58 mLayersToLoadOnCompletion.insert( layer, details );
63 mInvalidGeometryCheck = check;
65 switch ( mInvalidGeometryCheck )
69 auto callback = [](
const QgsFeature & feature )
71 throw QgsProcessingException( QObject::tr(
"Feature (%1) has invalid geometry. Please fix the geometry or change the Processing setting to the \"Ignore invalid input features\" option." ).arg( feature.id() ) );
73 mInvalidGeometryCallback = callback;
79 auto callback = [ = ](
const QgsFeature & feature )
82 mFeedback->reportError( QObject::tr(
"Feature (%1) has invalid geometry and has been skipped. Please fix the geometry or change the Processing setting to the \"Ignore invalid input features\" option." ).arg( feature.id() ) );
84 mInvalidGeometryCallback = callback;
96 context.mLayersToLoadOnCompletion.clear();
114 return mPostProcessor;
119 if ( mPostProcessor && mPostProcessor != processor )
120 delete mPostProcessor;
122 mPostProcessor = processor;
130 const bool preferFilenameAsLayerName =
QgsSettings().
value( QStringLiteral(
"Processing/Configuration/PREFER_FILENAME_AS_LAYER_NAME" ),
true ).toBool();
133 if ( ( preferFilenameAsLayerName && !layer->
isTemporary() ) || name.isEmpty() )
136 const QString layerName = sourceParts.value( QStringLiteral(
"layerName" ) ).toString();
138 if ( !layerName.isEmpty() )
142 const QString path = sourceParts.value( QStringLiteral(
"path" ) ).toString();
143 if ( !path.isEmpty() )
145 const QFileInfo fi( path );
146 layer->
setName( fi.baseName() );
148 else if ( !name.isEmpty() )
Base class for all map layer types.
void setLayersToLoadOnCompletion(const QMap< QString, QgsProcessingContext::LayerDetails > &layers)
Sets the map of layers (by ID or datasource) to LayerDetails, to load into the canvas upon completion...
An interface for layer post-processing handlers for execution following a processing algorithm operat...
This class is a composition of two QSettings instances:
QVariant value(const QString &key, const QVariant &defaultValue=QVariant(), Section section=NoSection) const
Returns the value for setting key.
QString providerType() const
Returns the provider type (provider key) for this layer.
void setPostProcessor(QgsProcessingLayerPostProcessorInterface *processor)
Sets the layer post-processor.
QgsMapLayer * takeResultLayer(const QString &id)
Takes the result map layer with matching id from the context and transfers ownership of it back to th...
Skip any features with invalid geometry. This requires a slow geometry validity check for every featu...
QVariantMap decodeUri(const QString &providerKey, const QString &uri)
Breaks a provider data source URI into its component paths (e.g.
QgsMapLayer * takeMapLayer(QgsMapLayer *layer)
Takes a layer from the store.
The feature class encapsulates a single feature including its id, geometry and a list of field/values...
InvalidGeometryCheck
Handling of features with invalid geometries.
Utility functions for use with processing classes.
static QgsMapLayer * mapLayerFromString(const QString &string, QgsProcessingContext &context, bool allowLoadingNewLayers=true, QgsProcessingUtils::LayerHint typeHint=QgsProcessingUtils::LayerHint::UnknownType)
Interprets a string as a map layer within the supplied context.
QgsProcessingLayerPostProcessorInterface * postProcessor() const
Layer post-processor.
static QgsProviderRegistry * instance(const QString &pluginPath=QString())
Means of accessing canonical single instance.
QgsMapLayerStore * temporaryLayerStore()
Returns a reference to the layer store used for storing temporary layers during algorithm execution...
void takeResultsFrom(QgsProcessingContext &context)
Takes the results from another context and merges them with the results currently stored in this cont...
Custom exception class for processing related exceptions.
QgsMapLayer * getMapLayer(const QString &identifier)
Returns a map layer from the context with a matching identifier.
void setInvalidGeometryCheck(QgsFeatureRequest::InvalidGeometryCheck check)
Sets the behavior used for checking invalid geometries in input layers.
void setName(const QString &name)
Set the display name of the layer.
Details for layers to load into projects.
void setOutputLayerName(QgsMapLayer *layer) const
Sets a layer name to match this output, respecting any local user settings which affect this name...
QgsProcessingContext()
Constructor for QgsProcessingContext.
void addLayerToLoadOnCompletion(const QString &layer, const QgsProcessingContext::LayerDetails &details)
Adds a layer to load (by ID or datasource) into the canvas upon completion of the algorithm or model...
QString source() const
Returns the source for the layer.
void transferLayersFromStore(QgsMapLayerStore *other)
Transfers all the map layers contained within another map layer store and adds them to this store...
virtual bool isTemporary() const
Returns true if the layer is considered a temporary layer.
QgsMapLayer * mapLayer(const QString &id) const
Retrieve a pointer to a layer by layer id.
Contains information about the context in which a processing algorithm is executed.
Close iterator on encountering any features with invalid geometry. This requires a slow geometry vali...