Class: QgsExpressionNodeLiteral¶
- class qgis.core.QgsExpressionNodeLiteral¶
Bases:
QgsExpressionNode
An expression node for literal values.
QgsExpressionNodeLiteral(value: Any) Constructor for
QgsExpressionNodeLiteral
, with the specified literalvalue
.QgsExpressionNodeLiteral(a0:
QgsExpressionNodeLiteral
)Methods
- rtype:
Optional[QgsExpressionNode]
- rtype:
str
- param parent:
- param parent:
- rtype:
QgsExpressionNode.NodeType
- param parent:
- rtype:
Set[str]
- rtype:
Set[str]
- rtype:
Set[str]
The value of the literal.
Returns a string representation of the node's literal value.
- clone(self) QgsExpressionNode | None ¶
- Return type:
Optional[QgsExpressionNode]
- dump(self) str ¶
- Return type:
str
- evalNode(self, parent: QgsExpression | None, context: QgsExpressionContext | None) Any ¶
- Parameters:
parent (Optional[QgsExpression])
context (Optional[QgsExpressionContext])
- Return type:
Any
- isStatic(self, parent: QgsExpression | None, context: QgsExpressionContext | None) bool ¶
- Parameters:
parent (Optional[QgsExpression])
context (Optional[QgsExpressionContext])
- Return type:
bool
- nodeType(self) QgsExpressionNode.NodeType ¶
- Return type:
- prepareNode(self, parent: QgsExpression | None, context: QgsExpressionContext | None) bool ¶
- Parameters:
parent (Optional[QgsExpression])
context (Optional[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]
- value(self) Any ¶
The value of the literal.
- Return type:
Any
- valueAsString(self) str ¶
Returns a string representation of the node’s literal value.
Added in version 3.20.
- Return type:
str