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/**
There are two possibilities how to use this class:
1. static call to QgsVectorFileWriter::writeAsShapefile(...) which saves the whole vector layer
2. create an instance of the class and issue calls to addFeature(...)
Currently supports only writing to shapefiles, but shouldn't be a problem to add capability
to support other OGR-writable formats.
*/
class QgsVectorLayerImport
{
%TypeHeaderCode
#include <qgsvectorlayerimport.h>
#include <qgsfield.h>
class QProgressDialog;
%End
public:
enum ImportError
{
NoError,
ErrDriverNotFound,
ErrCreateDataSource,
ErrCreateLayer,
ErrAttributeTypeUnsupported,
ErrAttributeCreationFailed,
ErrProjection,
ErrFeatureWriteFailed,
ErrInvalidLayer,
ErrInvalidProvider,
ErrProviderUnsupportedFeature,
ErrConnectionFailed
};
/** Write contents of vector layer to a different datasource */
static ImportError importLayer( QgsVectorLayer* layer,
const QString& uri,
const QString& providerKey,
const QgsCoordinateReferenceSystem *destCRS,
bool onlySelected = false,
QString *errorMessage /Out/ = 0,
bool skipAttributeCreation = false,
QMap<QString, QVariant> *options = 0,
QProgressDialog *progress = 0
);
/** create a empty layer and add fields to it */
QgsVectorLayerImport( const QString &uri,
const QString &provider,
const QgsFields &fields,
QGis::WkbType geometryType,
const QgsCoordinateReferenceSystem* crs,
bool overwrite = false,
const QMap<QString, QVariant> *options = 0,
QProgressDialog *progress = 0
);
/** checks whether there were any errors */
ImportError hasError();
/** retrieves error message */
QString errorMessage();
int errorCount() const;
/** add feature to the new created layer */
bool addFeature( QgsFeature& feature );
/** close the new created layer */
~QgsVectorLayerImport();
protected:
/** flush the buffer writing the features to the new layer */
bool flushBuffer();
/** create index */
bool createSpatialIndex();
};
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