Class: QgsExpressionNodeIndexOperator

class qgis.core.QgsExpressionNodeIndexOperator(container: QgsExpressionNode, index: QgsExpressionNode)

Bases: QgsExpressionNode

Constructor for QgsExpressionNodeIndexOperator.

QgsExpressionNodeIndexOperator(QgsExpressionNodeIndexOperator)

A indexing expression operator, which allows use of square brackets [] to reference map and array items.

New in version 3.6.

Parameters
clone(self)QgsExpressionNode
Return type

QgsExpressionNode

container(self)QgsExpressionNode

Returns the container node, representing an array or map value.

See also

index()

Return type

QgsExpressionNode

dump(self) → str
Return type

str

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

Any

index(self)QgsExpressionNode

Returns the index node, representing an array element index or map key.

See also

container()

Return type

QgsExpressionNode

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

bool

needsGeometry(self) → bool
Return type

bool

nodeType(self)QgsExpressionNode.NodeType
Return type

QgsExpressionNode.NodeType

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

bool

referencedColumns(self) → Set[str]
Return type

Set[str]

referencedFunctions(self) → Set[str]
Return type

Set[str]

referencedVariables(self) → Set[str]
Return type

Set[str]