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.
Methods
- rtype
QgsExpressionNode
Returns the container node, representing an array or map value.
- rtype
str
- param parent
Returns the index node, representing an array element index or map key.
- param parent
- rtype
bool
- rtype
QgsExpressionNode.NodeType
- param parent
- rtype
Set[str]
- rtype
Set[str]
- rtype
Set[str]
- clone(self) → QgsExpressionNode¶
- Return type
- container(self) → QgsExpressionNode¶
Returns the container node, representing an array or map value.
See also
- Return type
- dump(self) → str¶
- Return type
str
- evalNode(self, parent: QgsExpression, context: QgsExpressionContext) → Any¶
- Parameters
parent (QgsExpression) –
context (QgsExpressionContext) –
- Return type
Any
- index(self) → QgsExpressionNode¶
Returns the index node, representing an array element index or map key.
See also
- Return type
- isStatic(self, parent: QgsExpression, context: QgsExpressionContext) → bool¶
- Parameters
parent (QgsExpression) –
context (QgsExpressionContext) –
- Return type
bool
- needsGeometry(self) → bool¶
- Return type
bool
- nodeType(self) → QgsExpressionNode.NodeType¶
- Return type
- prepareNode(self, parent: QgsExpression, context: QgsExpressionContext) → bool¶
- Parameters
parent (QgsExpression) –
context (QgsExpressionContext) –
- 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]