Interface PathComponent

    • Method Detail

      • isFilterExpr

        boolean isFilterExpr()
        Returns true if this PathComponent is a FilterExpr. Note that if this method returns true, then a call to #isLocationStep must return false.
        Returns:
        true if this PathComponent is a FilterExpr
        See Also:
        isLocationStep()
      • isLocationStep

        boolean isLocationStep()
        Returns true if this PathComponent is a LocationStep. Note that if this method returns true, then a call to #isFilterExpr must return false.
        Returns:
        true if this PathComponent is a LocationStep
        See Also:
        isFilterExpr()
      • getDefaultPriority

        double getDefaultPriority()
        Determines the priority of a PatternExpr as follows:
          From the 19991116 XSLT 1.0 Recommendation:
          + If the pattern has the form of a QName preceded by a
            ChildOrAttributeAxisSpecifier or has the form 
            processing-instruction(Literal) then the priority is 0.
          + If the pattern has the form NCName:* preceded by a 
            ChildOrAttributeAxisSpecifier, then the priority is -0.25
          + Otherwise if the pattern consists of just a NodeTest 
            preceded by a ChildOrAttributeAxisSpecifier then the
            priority is -0.5
          + Otherwise the priority is 0.5
         
        Returns:
        the priority for this PatternExpr
      • getSubExpression

        XPathExpression getSubExpression()
        Returns the sub-expression encapsulated by this PathComponent. the sub-expression will either be a PrimaryExpr if this PathComponent is a FilterExpr, or a NodeExpression if this Pathcomponent is a LocationStep. This method may return null if no such sub-expression exists for the PathComponent.
        Returns:
        the sub-expression encapsulated by this PathComponent.
      • evaluatePredicates

        void evaluatePredicates​(NodeSet nodes,
                                XPathContext context)
                         throws XPathException
        Evaluates the PredicateExpr of this PathComponent against the given NodeSet and XPathContext.
        Parameters:
        nodes - the current NodeSet
        context - the XPathContext for use during evaluation.
        Throws:
        XPathException
      • getPredicate

        PredicateExpr getPredicate()
        Returns the PredicateExpr of this PathComponent
        Returns:
        the PredicateExpr of this PathComponent
      • hasPredicates

        boolean hasPredicates()
        Returns true if this PathComponent has predicates expressions.
        Returns:
        true if this PathComponent has predicates expressions.