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QgsVectorFileWriter is a QgsFeatureSink

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This commit is contained in:
Nyall Dawson 2017-04-26 10:56:39 +10:00
parent 8d0a9d6bce
commit 8d598337f3
3 changed files with 26 additions and 4 deletions
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7
python/core/qgsvectorfilewriter.sip
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@ -4,7 +4,7 @@
1. static call to QgsVectorFileWriter::writeAsVectorFormat(...) which saves the whole vector layer 1. static call to QgsVectorFileWriter::writeAsVectorFormat(...) which saves the whole vector layer
2. create an instance of the class and issue calls to addFeature(...) 2. create an instance of the class and issue calls to addFeature(...)
*/ */
class QgsVectorFileWriter class QgsVectorFileWriter : QgsFeatureSink
{ {
%TypeHeaderCode %TypeHeaderCode
#include <qgsvectorfilewriter.h> #include <qgsvectorfilewriter.h>
@ -380,8 +380,11 @@ class QgsVectorFileWriter
/** Retrieves error message */ /** Retrieves error message */
QString errorMessage(); QString errorMessage();
bool addFeature( QgsFeature &feature /In,Out/ );
bool addFeatures( QgsFeatureList &features /In,Out/ );
/** Add feature to the currently opened data source */ /** Add feature to the currently opened data source */
bool addFeature( QgsFeature& feature, QgsFeatureRenderer* renderer = 0, QgsUnitTypes::DistanceUnit outputUnit = QgsUnitTypes::DistanceMeters ); bool addFeature( QgsFeature& feature, QgsFeatureRenderer* renderer, QgsUnitTypes::DistanceUnit outputUnit = QgsUnitTypes::DistanceMeters );
//! @note not available in python bindings //! @note not available in python bindings
// QMap<int, int> attrIdxToOgrIdx(); // QMap<int, int> attrIdxToOgrIdx();

16
src/core/qgsvectorfilewriter.cpp
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@ -1818,6 +1818,22 @@ QString QgsVectorFileWriter::errorMessage()
return mErrorMessage; return mErrorMessage;
} }
bool QgsVectorFileWriter::addFeature( QgsFeature &feature )
{
return addFeature( feature, nullptr, QgsUnitTypes::DistanceMeters );
}
bool QgsVectorFileWriter::addFeatures( QgsFeatureList &features )
{
QgsFeatureList::iterator fIt = features.begin();
bool result = true;
for ( ; fIt != features.end(); ++fIt )
{
result = result && addFeature( *fIt, nullptr, QgsUnitTypes::DistanceMeters );
}
return result;
}
bool QgsVectorFileWriter::addFeature( QgsFeature &feature, QgsFeatureRenderer *renderer, QgsUnitTypes::DistanceUnit outputUnit ) bool QgsVectorFileWriter::addFeature( QgsFeature &feature, QgsFeatureRenderer *renderer, QgsUnitTypes::DistanceUnit outputUnit )
{ {
// create the feature // create the feature

7
src/core/qgsvectorfilewriter.h
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@ -40,7 +40,7 @@ class QgsFeatureIterator;
1. static call to QgsVectorFileWriter::writeAsVectorFormat(...) which saves the whole vector layer 1. static call to QgsVectorFileWriter::writeAsVectorFormat(...) which saves the whole vector layer
2. create an instance of the class and issue calls to addFeature(...) 2. create an instance of the class and issue calls to addFeature(...)
*/ */
class CORE_EXPORT QgsVectorFileWriter class CORE_EXPORT QgsVectorFileWriter : public QgsFeatureSink
{ {
public: public:
enum OptionType enum OptionType
@ -497,8 +497,11 @@ class CORE_EXPORT QgsVectorFileWriter
//! Retrieves error message //! Retrieves error message
QString errorMessage(); QString errorMessage();
bool addFeature( QgsFeature &feature ) override;
bool addFeatures( QgsFeatureList &features ) override;
//! Add feature to the currently opened data source //! Add feature to the currently opened data source
bool addFeature( QgsFeature &feature, QgsFeatureRenderer *renderer = nullptr, QgsUnitTypes::DistanceUnit outputUnit = QgsUnitTypes::DistanceMeters ); bool addFeature( QgsFeature &feature, QgsFeatureRenderer *renderer, QgsUnitTypes::DistanceUnit outputUnit = QgsUnitTypes::DistanceMeters );
//! \note not available in Python bindings //! \note not available in Python bindings
QMap<int, int> attrIdxToOgrIdx() { return mAttrIdxToOgrIdx; } QMap<int, int> attrIdxToOgrIdx() { return mAttrIdxToOgrIdx; }