mirror of
https://github.com/qgis/QGIS.git
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793 lines
20 KiB
Plaintext
793 lines
20 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsfeature.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsFeature
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{
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%Docstring(signature="appended")
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The feature class encapsulates a single feature including its unique ID,
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geometry and a list of field/values attributes.
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.. note::
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:py:class:`QgsFeature` objects are implicitly shared.
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%End
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%TypeHeaderCode
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#include "qgsfeature.h"
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#if (SIP_VERSION >= 0x040900 && SIP_VERSION < 0x040c01)
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#define sipType_QVariant ((sipWrapperType *) sipTypeAsPyTypeObject (sipType_QVariant))
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#endif
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%End
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public:
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static const QMetaObject staticMetaObject;
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public:
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SIP_PYOBJECT __iter__();
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%MethodCode
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QgsAttributes attributes = sipCpp->attributes();
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PyObject *attrs = sipConvertFromType( &attributes, sipType_QgsAttributes, Py_None );
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sipRes = PyObject_GetIter( attrs );
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%End
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SIP_PYOBJECT __getitem__( int key );
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%MethodCode
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QgsAttributes attrs = sipCpp->attributes();
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if ( a0 < 0 || a0 >= attrs.count() )
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{
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PyErr_SetString( PyExc_KeyError, QByteArray::number( a0 ) );
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sipIsErr = 1;
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}
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else
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{
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QVariant *v = new QVariant( attrs.at( a0 ) );
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sipRes = sipConvertFromNewType( v, sipType_QVariant, Py_None );
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}
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%End
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SIP_PYOBJECT __getitem__( const QString &name );
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%MethodCode
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int fieldIdx = sipCpp->fieldNameIndex( *a0 );
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if ( fieldIdx == -1 )
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{
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PyErr_SetString( PyExc_KeyError, a0->toLatin1() );
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sipIsErr = 1;
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}
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else
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{
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QVariant *v = new QVariant( sipCpp->attribute( fieldIdx ) );
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sipRes = sipConvertFromNewType( v, sipType_QVariant, Py_None );
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}
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%End
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void __setitem__( int key, QVariant value /GetWrapper/ );
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%MethodCode
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bool rv;
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if ( a1Wrapper == Py_None )
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{
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rv = sipCpp->setAttribute( a0, QVariant( QVariant::Int ) );
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}
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else
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{
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rv = sipCpp->setAttribute( a0, *a1 );
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}
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if ( !rv )
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{
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PyErr_SetString( PyExc_KeyError, QByteArray::number( a0 ) );
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sipIsErr = 1;
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}
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%End
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void __setitem__( const QString &key, QVariant value /GetWrapper/ );
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%MethodCode
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int fieldIdx = sipCpp->fieldNameIndex( *a0 );
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if ( fieldIdx == -1 )
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{
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PyErr_SetString( PyExc_KeyError, a0->toLatin1() );
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sipIsErr = 1;
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}
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else
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{
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if ( a1Wrapper == Py_None )
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{
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sipCpp->setAttribute( *a0, QVariant( QVariant::Int ) );
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}
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else
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{
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sipCpp->setAttribute( fieldIdx, *a1 );
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}
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}
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%End
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void __delitem__( int key );
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%MethodCode
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if ( a0 >= 0 && a0 < sipCpp->attributes().count() )
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sipCpp->deleteAttribute( a0 );
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else
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{
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PyErr_SetString( PyExc_KeyError, QByteArray::number( a0 ) );
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sipIsErr = 1;
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}
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%End
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void __delitem__( const QString &name );
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%MethodCode
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int fieldIdx = sipCpp->fieldNameIndex( *a0 );
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if ( fieldIdx == -1 )
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{
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PyErr_SetString( PyExc_KeyError, a0->toLatin1() );
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sipIsErr = 1;
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}
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else
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sipCpp->deleteAttribute( fieldIdx );
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%End
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Py_hash_t __hash__() const;
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%MethodCode
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sipRes = qHash( *sipCpp );
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%End
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QgsFeature( qint64 id = FID_NULL );
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%Docstring
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Constructor for QgsFeature
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:param id: unique feature ID
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%End
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QgsFeature( const QgsFields &fields, qint64 id = FID_NULL );
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%Docstring
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Constructor for QgsFeature
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:param fields: feature's fields
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:param id: unique feature ID
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%End
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QgsFeature( const QgsFeature &rhs );
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%Docstring
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Copy constructor
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%End
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bool operator==( const QgsFeature &other ) const;
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bool operator!=( const QgsFeature &other ) const;
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virtual ~QgsFeature();
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QgsFeatureId id() const;
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%Docstring
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Returns the feature ID for this feature.
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.. seealso:: :py:func:`setId`
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%End
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void setId( QgsFeatureId id );
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%Docstring
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Sets the feature ``id`` for this feature.
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:param id: feature id
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.. seealso:: :py:func:`id`
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.. warning::
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Feature IDs will be automatically changed whenever a feature is added to vector layer or data provider.
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This method is not designed to allow a specific feature ID to be assigned to a feature which will be added to a
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layer or data provider, and the results will be unpredictable
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%End
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QgsAttributes attributes() const;
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%Docstring
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Returns the feature's attributes.
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Alternatively, in Python it is possible to directly iterate over a feature in order to retrieve
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its attributes:
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.. code-block:: python
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feature = QgsFeature()
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feature.setAttributes([11, 'string value', 55.5])
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for attr in feature:
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print(attr)
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.. seealso:: :py:func:`setAttributes`
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.. seealso:: :py:func:`attributeMap`
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%End
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SIP_PYOBJECT attributeMap() const /TypeHint="Dict[str, Optional[object]]"/;
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%Docstring
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Returns the feature's attributes as a map of field name to value.
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.. note::
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The fields definition must be associated with the feature using :py:func:`~QgsFeature.setFields` before this method can be used.
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:raises ValueError: if the field definition is unset or the size of the fields does not match the size of the feature's attributes()
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.. seealso:: :py:func:`attributes`
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.. seealso:: :py:func:`setAttributes`
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.. versionadded:: 3.22.2
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%End
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%MethodCode
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const int fieldSize = sipCpp->fields().size();
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const int attributeSize = sipCpp->attributes().size();
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if ( fieldSize == 0 && attributeSize != 0 )
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{
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PyErr_SetString( PyExc_ValueError, QStringLiteral( "Field definition has not been set for feature" ).toUtf8().constData() );
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sipIsErr = 1;
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}
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else if ( fieldSize != attributeSize )
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{
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PyErr_SetString( PyExc_ValueError, QStringLiteral( "Feature attribute size (%1) does not match number of fields (%2)" ).arg( attributeSize ).arg( fieldSize ).toUtf8().constData() );
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sipIsErr = 1;
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}
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else
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{
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QVariantMap *v = new QVariantMap( sipCpp->attributeMap() );
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const sipTypeDef *qvariantmap_type = sipFindType( "QMap<QString,QVariant>" );
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sipRes = sipConvertFromNewType( v, qvariantmap_type, Py_None );
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}
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%End
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int attributeCount() const;
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%Docstring
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Returns the number of attributes attached to the feature.
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.. versionadded:: 3.18
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%End
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void setAttributes( const QgsAttributes &attrs );
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%Docstring
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Sets the feature's attributes.
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Calling this method will automatically set the feature as valid (see :py:func:`~QgsFeature.isValid`).
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The number of provided attributes need to exactly match the number of the feature's fields.
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:param attrs: List of attribute values
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.. warning::
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If the number of provided attributes does not exactly match
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the number of the feature's fields then it will not be possible to add this feature to the corresponding data
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provider.
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.. seealso:: :py:func:`setAttribute`
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.. seealso:: :py:func:`attributes`
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%End
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bool setAttribute( int field, const QVariant &attr /GetWrapper/ );
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%Docstring
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Sets an attribute's value by field index.
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If the attribute was successfully set then the feature will be automatically marked as valid (see :py:func:`~QgsFeature.isValid`).
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Alternatively, in Python it is possible to directly set a field's value via the field's index:
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.. code-block:: python
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fields = QgsFields()
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fields.append(QgsField('my_id', QVariant.Int))
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fields.append(QgsField('name', QVariant.String))
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feature = QgsFeature(fields)
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# set the "name" field value
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feature[1] = "my name"
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# set the "my_id" field value
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feature[0] = 55
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:param field: the index of the field to set
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:param attr: the value of the attribute
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:raises KeyError: if the field index does not exist
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.. seealso:: :py:func:`setAttributes`
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%End
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%MethodCode
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bool rv;
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if ( a1Wrapper == Py_None )
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{
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rv = sipCpp->setAttribute( a0, QVariant( QVariant::Int ) );
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}
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else
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{
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rv = sipCpp->setAttribute( a0, *a1 );
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}
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if ( !rv )
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{
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PyErr_SetString( PyExc_KeyError, QByteArray::number( a0 ) );
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sipIsErr = 1;
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}
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sipRes = rv;
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%End
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void initAttributes( int fieldCount );
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%Docstring
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Initialize this feature with the given number of fields.
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Discards any previously set attribute data.
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:param fieldCount: Number of fields to initialize
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.. seealso:: :py:func:`resizeAttributes`
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%End
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void resizeAttributes( int fieldCount );
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%Docstring
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Resizes the attributes attached to this feature to the given number of fields.
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If the new ``fieldCount`` is greater than the original number of fields then the additional attributes will
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be filled with NULL values. All existing attributes will remain unchanged.
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If the new ``fieldCount`` is less than the original number of fields then the unwanted values will be discarded from the
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end of the existing attributes.
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.. seealso:: :py:func:`initAttributes`
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.. seealso:: :py:func:`padAttributes`
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.. versionadded:: 3.18
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%End
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void padAttributes( int count );
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%Docstring
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Resizes the attributes attached to this feature by appending the specified ``count`` of NULL values to the end of the existing attributes.
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.. seealso:: :py:func:`resizeAttributes`
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.. versionadded:: 3.18
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%End
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void deleteAttribute( int field );
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%Docstring
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Clear's an attribute's value by its index.
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:param field: the index of the field
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Alternatively, in Python it is possible to directly `del` an attribute via its index:
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.. code-block:: python
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feature = QgsFeature()
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feature.setAttributes([11, 'my feature', 55.5])
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# will print [11, 'my feature', 55.5]
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print(feature.attributes())
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# clear the second attribute
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del feature[1]
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# will now print [11, NONE]
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print(feature.attributes())
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:raises KeyError: if the field is not found
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.. seealso:: :py:func:`setAttribute`
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%End
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%MethodCode
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if ( a0 >= 0 && a0 < sipCpp->attributes().count() )
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sipCpp->deleteAttribute( a0 );
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else
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{
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PyErr_SetString( PyExc_KeyError, QByteArray::number( a0 ) );
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sipIsErr = 1;
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}
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%End
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bool isValid() const;
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%Docstring
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Returns the validity of this feature.
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This is normally set by the provider to indicate some problem that makes the feature
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invalid or to indicate a null feature.
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.. seealso:: :py:func:`setValid`
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%End
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void setValid( bool validity );
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%Docstring
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Sets the validity of the feature.
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:param validity: set to ``True`` if feature is valid
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.. seealso:: :py:func:`isValid`
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%End
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bool hasGeometry() const;
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%Docstring
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Returns ``True`` if the feature has an associated geometry.
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.. seealso:: :py:func:`geometry`
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%End
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QgsGeometry geometry() const;
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%Docstring
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Returns the geometry associated with this feature. If the feature has no geometry,
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an empty :py:class:`QgsGeometry` object will be returned.
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.. seealso:: :py:func:`hasGeometry`
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.. seealso:: :py:func:`setGeometry`
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%End
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void setGeometry( const QgsGeometry &geometry );
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%Docstring
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Set the feature's geometry.
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Calling this method will automatically set the feature as valid (see :py:func:`~QgsFeature.isValid`).
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:param geometry: new feature geometry
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.. seealso:: :py:func:`geometry`
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.. seealso:: :py:func:`clearGeometry`
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%End
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void setGeometry( QgsAbstractGeometry *geometry /Transfer/ );
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%Docstring
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Set the feature's ``geometry``.
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Ownership of the geometry is transferred to the feature.
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Calling this method will automatically set the feature as valid (see :py:func:`~QgsFeature.isValid`).
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This method is a shortcut for calling:
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.. code-block:: python
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feature.setGeometry( QgsGeometry( geometry ) )
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Example
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-------
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.. code-block:: python
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# Sets a feature's geometry to a point geometry
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feature.setGeometry( QgsPoint( 210, 41 ) )
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print(feature.geometry())
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# output: <QgsGeometry: Point (210 41)>
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# Sets a feature's geometry to a line string
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feature.setGeometry( QgsLineString( [ QgsPoint( 210, 41 ), QgsPoint( 301, 55 ) ] ) )
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print(feature.geometry())
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# output: <QgsGeometry: LineString (210 41, 301 55)>
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.. seealso:: :py:func:`geometry`
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.. seealso:: :py:func:`clearGeometry`
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.. versionadded:: 3.6
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%End
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%MethodCode
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sipCpp->setGeometry( std::unique_ptr< QgsAbstractGeometry>( a0 ) );
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%End
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void clearGeometry();
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%Docstring
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Removes any geometry associated with the feature.
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.. seealso:: :py:func:`setGeometry`
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.. seealso:: :py:func:`hasGeometry`
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%End
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void setFields( const QgsFields &fields, bool initAttributes = true );
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%Docstring
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Assigns a field map with the feature to allow attribute access by attribute name.
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:param fields: The attribute fields which this feature holds
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:param initAttributes: If ``True``, attributes are initialized. Clears any data previously assigned.
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.. seealso:: :py:func:`fields`
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%End
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QgsFields fields() const;
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%Docstring
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Returns the field map associated with the feature.
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.. seealso:: :py:func:`setFields`
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%End
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void setAttribute( const QString &name, const QVariant &value /GetWrapper/ );
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%Docstring
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Insert a value into attribute, by field ``name``.
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Field map must be associated using :py:func:`~QgsFeature.setFields` before this method can be used.
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Calling this method will automatically set the feature as valid (see :py:func:`~QgsFeature.isValid`).
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Alternatively, in Python it is possible to directly set a field's value via the field's name:
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.. code-block:: python
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fields = QgsFields()
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fields.append(QgsField('my_id', QVariant.Int))
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fields.append(QgsField('name', QVariant.String))
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feature = QgsFeature(fields)
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# set the "name" field value
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feature['name'] = "my name"
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# set the "my_id" field value
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feature['my_id'] = 55
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:param name: The name of the field to set
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:param value: The value to set
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:raises KeyError: if the attribute name could not could not be matched.
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.. seealso:: :py:func:`setFields`
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%End
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%MethodCode
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int fieldIdx = sipCpp->fieldNameIndex( *a0 );
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if ( fieldIdx == -1 )
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{
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PyErr_SetString( PyExc_KeyError, a0->toLatin1() );
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sipIsErr = 1;
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}
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else
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{
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if ( a1Wrapper == Py_None )
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{
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sipCpp->setAttribute( *a0, QVariant( QVariant::Int ) );
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}
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else
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{
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sipCpp->setAttribute( fieldIdx, *a1 );
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}
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}
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%End
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bool deleteAttribute( const QString &name );
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%Docstring
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Clear's an attribute's value by its field ``name``.
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Field map must be associated using :py:func:`~QgsFeature.setFields` before this method can be used.
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Alternatively, in Python it is possible to directly `del` an attribute via its name:
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|
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.. code-block:: python
|
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|
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fields = QgsFields()
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fields.append(QgsField('my_id', QVariant.Int))
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fields.append(QgsField('name', QVariant.String))
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feature = QgsFeature(fields)
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feature.setAttributes([11, 'my feature'])
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|
|
# will print [11, 'my feature']
|
|
print(feature.attributes())
|
|
|
|
# clear the 'name' attribute
|
|
del feature['name']
|
|
|
|
# will now print [11, NULL]
|
|
print(feature.attributes())
|
|
|
|
:param name: The name of the field to clear
|
|
|
|
:raises KeyError: if attribute name could not be matched.
|
|
|
|
.. seealso:: :py:func:`setFields`
|
|
%End
|
|
%MethodCode
|
|
int fieldIdx = sipCpp->fieldNameIndex( *a0 );
|
|
if ( fieldIdx == -1 )
|
|
{
|
|
PyErr_SetString( PyExc_KeyError, a0->toLatin1() );
|
|
sipIsErr = 1;
|
|
sipRes = false;
|
|
}
|
|
else
|
|
{
|
|
sipCpp->deleteAttribute( fieldIdx );
|
|
sipRes = true;
|
|
}
|
|
%End
|
|
|
|
|
|
SIP_PYOBJECT attribute( const QString &name ) const;
|
|
%Docstring
|
|
Lookup attribute value by attribute ``name``.
|
|
|
|
Field map must be associated using :py:func:`~QgsFeature.setFields` before this method can be used.
|
|
|
|
Alternatively, in Python it is possible to directly retrieve a field's value via the field's name:
|
|
|
|
.. code-block:: python
|
|
|
|
fields = QgsFields()
|
|
fields.append(QgsField('my_id', QVariant.Int))
|
|
fields.append(QgsField('name', QVariant.String))
|
|
feature = QgsFeature(fields)
|
|
feature.setAttributes([11, 'my feature'])
|
|
|
|
# print the "name" field value
|
|
print(feature['name'])
|
|
# print the "my_id" field value
|
|
print(feature['my_id'])
|
|
|
|
:param name: The name of the attribute to get
|
|
|
|
:return: The value of the attribute
|
|
|
|
:raises KeyError: if the field is not found
|
|
|
|
.. seealso:: :py:func:`setFields`
|
|
%End
|
|
%MethodCode
|
|
int fieldIdx = sipCpp->fieldNameIndex( *a0 );
|
|
if ( fieldIdx == -1 )
|
|
{
|
|
PyErr_SetString( PyExc_KeyError, a0->toLatin1() );
|
|
sipIsErr = 1;
|
|
}
|
|
else
|
|
{
|
|
QVariant *v = new QVariant( sipCpp->attribute( fieldIdx ) );
|
|
sipRes = sipConvertFromNewType( v, sipType_QVariant, Py_None );
|
|
}
|
|
%End
|
|
|
|
|
|
SIP_PYOBJECT attribute( int fieldIdx ) const;
|
|
%Docstring
|
|
Lookup attribute value from its index.
|
|
|
|
Alternatively, in Python it is possible to directly retrieve a field's value via its index:
|
|
|
|
.. code-block:: python
|
|
|
|
feature = QgsFeature()
|
|
feature.setAttributes([11, 'my feature', 55.5])
|
|
|
|
# will print 11
|
|
print(feature[0])
|
|
|
|
# will print 'my feature'
|
|
print(feature[1])
|
|
|
|
# will print 55.5
|
|
print(feature[2])
|
|
|
|
:param fieldIdx: The index of the attribute to get
|
|
|
|
:return: The value of the attribute
|
|
|
|
:raises KeyError: if the field is not found
|
|
|
|
.. seealso:: :py:func:`setFields`
|
|
%End
|
|
%MethodCode
|
|
{
|
|
if ( a0 < 0 || a0 >= sipCpp->attributes().count() )
|
|
{
|
|
PyErr_SetString( PyExc_KeyError, QByteArray::number( a0 ) );
|
|
sipIsErr = 1;
|
|
}
|
|
else
|
|
{
|
|
QVariant *v = new QVariant( sipCpp->attribute( a0 ) );
|
|
sipRes = sipConvertFromNewType( v, sipType_QVariant, Py_None );
|
|
}
|
|
}
|
|
%End
|
|
|
|
|
|
|
|
bool isUnsetValue( int fieldIdx ) const;
|
|
%Docstring
|
|
Returns ``True`` if the attribute at the specified index is an unset value.
|
|
|
|
:raises KeyError: if the field is not found
|
|
|
|
.. seealso:: :py:class:`QgsUnsetAttributeValue`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
%MethodCode
|
|
{
|
|
if ( a0 < 0 || a0 >= sipCpp->attributes().count() )
|
|
{
|
|
PyErr_SetString( PyExc_KeyError, QByteArray::number( a0 ) );
|
|
sipIsErr = 1;
|
|
}
|
|
else
|
|
{
|
|
sipRes = sipCpp->isUnsetValue( a0 );
|
|
}
|
|
}
|
|
%End
|
|
|
|
const QgsSymbol *embeddedSymbol() const;
|
|
%Docstring
|
|
Returns the feature's embedded symbology, or ``None`` if the feature has no embedded symbol.
|
|
|
|
.. versionadded:: 3.20
|
|
%End
|
|
|
|
void setEmbeddedSymbol( QgsSymbol *symbol /Transfer/ );
|
|
%Docstring
|
|
Sets the feature's embedded ``symbol``.
|
|
|
|
Ownership of ``symbol`` is transferred to the feature.
|
|
|
|
.. versionadded:: 3.20
|
|
%End
|
|
|
|
int fieldNameIndex( const QString &fieldName ) const;
|
|
%Docstring
|
|
Utility method to get attribute index from name.
|
|
|
|
Field map must be associated using :py:func:`~QgsFeature.setFields` before this method can be used.
|
|
|
|
:param fieldName: name of field to get attribute index of
|
|
|
|
:return: -1 if field does not exist or field map is not associated.
|
|
|
|
.. seealso:: :py:func:`setFields`
|
|
%End
|
|
|
|
int approximateMemoryUsage() const;
|
|
%Docstring
|
|
Returns the approximate RAM usage of the feature, in bytes.
|
|
|
|
This method takes into account the size of variable elements (strings,
|
|
geometry, ...), but the value returned should be considered as a lower
|
|
bound estimation.
|
|
|
|
.. versionadded:: 3.16
|
|
%End
|
|
|
|
operator QVariant() const;
|
|
|
|
}; // class QgsFeature
|
|
|
|
|
|
typedef QMap<qint64, QMap<int, QVariant> > QgsChangedAttributesMap;
|
|
|
|
|
|
typedef QMap<qint64, QgsGeometry> QgsGeometryMap;
|
|
|
|
typedef QList<QgsFeature> QgsFeatureList;
|
|
|
|
|
|
|
|
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsfeature.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
|
|
************************************************************************/
|