Subgroup: Expression

Class: QgsExpressionNodeUnaryOperator

class qgis.core.QgsExpressionNodeUnaryOperator

Bases: qgis._core.QgsExpressionNode

A unary node is either negative as in boolean (not) or as in numbers (minus).

Methods

clone
dump
eval	Evaluate this node with the given context and parent.
evalNode
isStatic
needsGeometry
nodeType
op
operand
prepare	Prepare this node for evaluation.
prepareNode
referencedColumns
referencedVariables
text	Returns a the name of this operator without the operands.

Attributes

ntBinaryOperator
ntColumnRef
ntCondition
ntFunction
ntInOperator
ntLiteral
ntUnaryOperator
uoMinus
uoNot

class UnaryOperator

Bases: int

clone(self) → QgsExpressionNode

dump(self) → str

evalNode(self, parent: QgsExpression, context: QgsExpressionContext) → Any

isStatic(self, parent: QgsExpression, context: QgsExpressionContext) → bool

needsGeometry(self) → bool

nodeType(self) → QgsExpressionNode.NodeType

op(self) → QgsExpressionNodeUnaryOperator.UnaryOperator

operand(self) → QgsExpressionNode

prepareNode(self, parent: QgsExpression, context: QgsExpressionContext) → bool

referencedColumns(self) → Set[str]

referencedVariables(self) → Set[str]

text(self) → str

Returns a the name of this operator without the operands. I.e. “NOT” or “-“

uoMinus = 1

uoNot = 0