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b119744773
* replace cancelling and cancelled by canceling and canceled, respectively see https://github.com/qgis/qgis3_UIX_discussion/issues/19 * replace cancellation by cancelation
105 lines
3.8 KiB
Plaintext
105 lines
3.8 KiB
Plaintext
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/**
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There are two possibilities how to use this class:
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1. static call to QgsVectorFileWriter::writeAsShapefile(...) which saves the whole vector layer
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2. create an instance of the class and issue calls to addFeature(...)
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*/
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class QgsVectorLayerImport
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{
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%TypeHeaderCode
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#include <qgsvectorlayerimport.h>
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#include <qgsfield.h>
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class QProgressDialog;
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%End
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public:
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enum ImportError
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{
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NoError,
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ErrDriverNotFound,
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ErrCreateDataSource,
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ErrCreateLayer,
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ErrAttributeTypeUnsupported,
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ErrAttributeCreationFailed,
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ErrProjection,
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ErrFeatureWriteFailed,
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ErrInvalidLayer,
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ErrInvalidProvider,
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ErrProviderUnsupportedFeature,
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ErrConnectionFailed,
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ErrUserCanceled, /*!< User canceled the import*/
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};
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/**
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* Writes the contents of vector layer to a different datasource.
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* @param layer source layer
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* @param uri URI for destination data source
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* @param providerKey string key for destination data provider
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* @param destCRS destination CRS, or an invalid (default constructed) CRS if
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* not available
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* @param onlySelected set to true to export only selected features
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* @param errorMessage if non-null, will be set to any error messages
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* @param skipAttributeCreation set to true to skip exporting feature attributes
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* @param options optional provider dataset options
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* @param progress optional progress dialog to show progress of export
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* @returns NoError for a successful export, or encountered error
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*/
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static ImportError importLayer( QgsVectorLayer* layer,
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const QString& uri,
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const QString& providerKey,
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const QgsCoordinateReferenceSystem& destCRS,
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bool onlySelected = false,
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QString *errorMessage /Out/ = nullptr,
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bool skipAttributeCreation = false,
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QMap<QString, QVariant> *options = nullptr,
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QProgressDialog *progress = nullptr
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);
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/** Constructor for QgsVectorLayerImport.
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* @param uri URI for destination data source
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* @param provider string key for destination data provider
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* @param fields fields to include in created layer
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* @param geometryType destination geometry type
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* @param crs desired CRS, or an invalid (default constructed) CRS if
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* not available
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* @param overwrite set to true to overwrite any existing data source
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* @param options optional provider dataset options
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* @param progress optional progress dialog to show progress of export
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*/
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QgsVectorLayerImport( const QString &uri,
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const QString &provider,
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const QgsFields &fields,
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QgsWkbTypes::Type geometryType,
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const QgsCoordinateReferenceSystem& crs,
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bool overwrite = false,
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const QMap<QString, QVariant> *options = nullptr,
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QProgressDialog *progress = nullptr
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);
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/** Checks whether there were any errors */
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ImportError hasError();
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/** Retrieves error message */
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QString errorMessage();
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int errorCount() const;
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/** Add feature to the new created layer */
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bool addFeature( QgsFeature& feature );
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/** Close the new created layer */
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~QgsVectorLayerImport();
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protected:
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/** Flush the buffer writing the features to the new layer */
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bool flushBuffer();
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/** Create index */
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bool createSpatialIndex();
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private:
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QgsVectorLayerImport( const QgsVectorLayerImport& rh );
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};
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