Class: QgsExpressionNodeLiteral

class qgis.core.QgsExpressionNodeLiteral

Bases: QgsExpressionNode

An expression node for literal values.

QgsExpressionNodeLiteral(value: Any) Constructor for QgsExpressionNodeLiteral, with the specified literal value.

QgsExpressionNodeLiteral(QgsExpressionNodeLiteral)

Methods

clone	rtype QgsExpressionNode
dump	rtype str
evalNode	param parent
isStatic	param parent
nodeType	rtype QgsExpressionNode.NodeType
prepareNode	param parent
referencedColumns	rtype Set[str]
referencedFunctions	rtype Set[str]
referencedVariables	rtype Set[str]
value	The value of the literal.
valueAsString	Returns a string representation of the node’s literal value.

clone(self) → QgsExpressionNode

Return type

QgsExpressionNode

dump(self) → str

Return type

str

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

Parameters

• parent (QgsExpression) –

• context (QgsExpressionContext) –

Return type

Any

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

Parameters

• parent (QgsExpression) –

• context (QgsExpressionContext) –

Return type

bool

nodeType(self) → QgsExpressionNode.NodeType

Return type

QgsExpressionNode.NodeType

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]

value(self) → Any

The value of the literal.

Return type

Any

valueAsString(self) → str

Returns a string representation of the node’s literal value.

New in version 3.20.

Return type

str