Subgroup: Expression

Class: QgsExpressionNodeUnaryOperator

class qgis.core.QgsExpressionNodeUnaryOperator(op: QgsExpressionNodeUnaryOperator.UnaryOperator, operand: QgsExpressionNode)

Bases: qgis._core.QgsExpressionNode

A node unary operator is modifying the value of operand by negating it with op.

QgsExpressionNodeUnaryOperator(QgsExpressionNodeUnaryOperator)

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

Methods

clone
dump
evalNode
isStatic
needsGeometry
nodeType
op
operand
prepareNode
referencedColumns
referencedVariables
text	Returns a the name of this operator without the operands.

Signals

Attributes

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