org.apache.xalan.templates

Class AbsPathChecker


public class AbsPathChecker
extends XPathVisitor

This class runs over a path expression that is assumed to be absolute, and checks for variables and the like that may make it context dependent.

Method Summary

boolean
checkAbsolute(LocPathIterator path)
Process the LocPathIterator to see if it contains variables or functions that may make it context dependent.
boolean
visitFunction(ExpressionOwner owner, Function func)
Visit a function.
boolean
visitVariableRef(ExpressionOwner owner, Variable var)
Visit a variable reference.

Methods inherited from class org.apache.xpath.XPathVisitor

visitBinaryOperation, visitFunction, visitLocationPath, visitMatchPattern, visitNumberLiteral, visitPredicate, visitStep, visitStringLiteral, visitUnaryOperation, visitUnionPath, visitUnionPattern, visitVariableRef

Method Details

checkAbsolute

public boolean checkAbsolute(LocPathIterator path)
Process the LocPathIterator to see if it contains variables or functions that may make it context dependent.

Parameters:
path - LocPathIterator that is assumed to be absolute, but needs checking.

Returns:
true if the path is confirmed to be absolute, false if it may contain context dependencies.


visitFunction

public boolean visitFunction(ExpressionOwner owner,
                             Function func)
Visit a function.
Overrides:
visitFunction in interface XPathVisitor

Parameters:
owner - The owner of the expression, to which the expression can be reset if rewriting takes place.
func - The function reference object.

Returns:
true if the sub expressions should be traversed.


visitVariableRef

public boolean visitVariableRef(ExpressionOwner owner,
                                Variable var)
Visit a variable reference.
Overrides:
visitVariableRef in interface XPathVisitor

Parameters:
owner - The owner of the expression, to which the expression can be reset if rewriting takes place.
var - The variable reference object.

Returns:
true if the sub expressions should be traversed.


Copyright B) 2004 Apache XML Project. All Rights Reserved.