Subgroup: Expression
Class: QgsExpressionNodeColumnRef¶
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class
qgis.core.
QgsExpressionNodeColumnRef
(name: str)¶ Bases:
qgis._core.QgsExpressionNode
Constructor for QgsExpressionNodeColumnRef, referencing the column with the specified
name
.QgsExpressionNodeColumnRef(QgsExpressionNodeColumnRef)
An expression node which takes it value from a feature’s field.
Methods
clone
dump
evalNode
isStatic
name
The name of the column. needsGeometry
nodeType
prepareNode
referencedColumns
referencedFunctions
referencedVariables
Signals
Attributes
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clone
(self) → QgsExpressionNode¶
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dump
(self) → str¶
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evalNode
(self, parent: QgsExpression, context: QgsExpressionContext) → Any¶
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isStatic
(self, parent: QgsExpression, context: QgsExpressionContext) → bool¶
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name
(self) → str¶ The name of the column.
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needsGeometry
(self) → bool¶
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nodeType
(self) → QgsExpressionNode.NodeType¶
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prepareNode
(self, parent: QgsExpression, context: QgsExpressionContext) → bool¶
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referencedColumns
(self) → Set[str]¶
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referencedFunctions
(self) → Set[str]¶
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referencedVariables
(self) → Set[str]¶
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