TXPathExprNode.Evaluate function

Member of TXPathExprNodepublicIn unit Laz2_XPath

Specifies the method used to evaluate an XPath Predicate Expression.

Declaration

pascal

function Evaluate(AContext: TXPathContext; 
 AEnvironment: TXPathEnvironment): TXPathVariable
 ; virtual; abstract

Arguments

`AContext`	Context node for the expression.
`AEnvironment`	XPath environment for the evaluation.

Function result

Contains the result for the evaluated expression.

Description

Evaluate is an abstract virtual TXPathVariable function which specifies the interface used to evaluate an XPath Predicate Expression. Evaluate must be implemented in descendent classes which handles specific Predicate Expression types in the XPath syntax.

TXPathExprNode.Evaluate function

Declaration

Arguments

Function result

Description

See also