Subgroup: Expression

Class: QgsExpressionNodeCondition

class qgis.core.QgsExpressionNodeCondition(conditions: object, elseExp: QgsExpressionNode = None)

Bases: qgis._core.QgsExpressionNode

Create a new node with the given list of conditions and an optional elseExp expression.

QgsExpressionNodeCondition(QgsExpressionNodeCondition)

Methods

clone
dump
eval	Evaluate this node with the given context and parent.
evalNode
isStatic
needsGeometry
nodeType
prepare	Prepare this node for evaluation.
prepareNode
referencedColumns
referencedVariables

Attributes

ntBinaryOperator
ntColumnRef
ntCondition
ntFunction
ntInOperator
ntLiteral
ntUnaryOperator

class WhenThen(whenExp: QgsExpressionNode, thenExp: QgsExpressionNode)

Bases: sip.wrapper

A combination of when and then. Simple as that.

clone(self) → QgsExpressionNodeCondition.WhenThen

Get a deep copy of this WhenThen combination.

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

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

referencedColumns(self) → Set[str]

referencedVariables(self) → Set[str]