org.apache.xpath.axes

## Class HasPositionalPredChecker

- java.lang.Object
- - org.apache.xpath.XPathVisitor
  - - org.apache.xpath.axes.HasPositionalPredChecker

-     public class HasPositionalPredChecker
      extends XPathVisitor

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `HasPositionalPredChecker()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static boolean` | `check(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` | `visitPredicate(ExpressionOwner owner, Expression pred)` Visit a predicate within a location path.

    - ### Methods inherited from class org.apache.xpath.XPathVisitor

      `visitBinaryOperation, visitLocationPath, visitMatchPattern, visitNumberLiteral, visitStep, visitStringLiteral, visitUnaryOperation, visitUnionPath, visitUnionPattern, visitVariableRef`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### HasPositionalPredChecker

          public HasPositionalPredChecker()

  - ### Method Detail

    - #### check

          public static boolean check(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 class `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.

    - #### visitPredicate

          public boolean visitPredicate(ExpressionOwner owner,
                               Expression pred)

      Visit a predicate within a location path. Note that there isn't a proper unique component for predicates, and that the expression will be called also for whatever type Expression is.
      Overrides:
        `visitPredicate` in class `XPathVisitor`
      Parameters:
        `owner` - The owner of the expression, to which the expression can be reset if rewriting takes place.
        `pred` - The predicate object.
      Returns:
        true if the sub expressions should be traversed.

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