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74 lines
3.6 KiB
Plaintext
74 lines
3.6 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsvectorlayerutils.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 QgsVectorLayerUtils
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{
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%Docstring
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Contains utility methods for working with QgsVectorLayers.
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.. versionadded:: 3.0
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%End
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%TypeHeaderCode
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#include "qgsvectorlayerutils.h"
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%End
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public:
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static bool valueExists( const QgsVectorLayer *layer, int fieldIndex, const QVariant &value, const QgsFeatureIds &ignoreIds = QgsFeatureIds() );
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%Docstring
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Returns true if the specified value already exists within a field. This method can be used to test for uniqueness
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of values inside a layer's attributes. An optional list of ignored feature IDs can be provided, if so, any features
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with IDs within this list are ignored when testing for existence of the value.
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.. seealso:: createUniqueValue()
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:rtype: bool
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%End
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static QVariant createUniqueValue( const QgsVectorLayer *layer, int fieldIndex, const QVariant &seed = QVariant() );
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%Docstring
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Returns a new attribute value for the specified field index which is guaranteed to be unique. The optional seed
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value can be used as a basis for generated values.
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.. seealso:: valueExists()
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:rtype: QVariant
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%End
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static bool validateAttribute( const QgsVectorLayer *layer, const QgsFeature &feature, int attributeIndex, QStringList &errors /Out/,
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QgsFieldConstraints::ConstraintStrength strength = QgsFieldConstraints::ConstraintStrengthNotSet,
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QgsFieldConstraints::ConstraintOrigin origin = QgsFieldConstraints::ConstraintOriginNotSet );
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%Docstring
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Tests an attribute value to check whether it passes all constraints which are present on the corresponding field.
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Returns true if the attribute value is valid for the field. Any constraint failures will be reported in the errors argument.
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If the strength or origin parameter is set then only constraints with a matching strength/origin will be checked.
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:rtype: bool
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%End
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static QgsFeature createFeature( QgsVectorLayer *layer,
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const QgsGeometry &geometry = QgsGeometry(),
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const QgsAttributeMap &attributes = QgsAttributeMap(),
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QgsExpressionContext *context = 0 );
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%Docstring
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Creates a new feature ready for insertion into a layer. Default values and constraints
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(e.g., unique constraints) will automatically be handled. An optional attribute map can be
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passed for the new feature to copy as many attribute values as possible from the map,
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assuming that they respect the layer's constraints. Note that the created feature is not
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automatically inserted into the layer.
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:rtype: QgsFeature
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsvectorlayerutils.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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