Package org.apache.xpath.functions

Class FuncPosition

java.lang.Object
org.apache.xpath.Expression
org.apache.xpath.functions.Function
org.apache.xpath.functions.FuncPosition
All Implemented Interfaces:
Serializable, SourceLocator, ExpressionNode, XPathVisitable
public class FuncPosition
extends Function
Execute the Position() function.
See Also:
Serialized Form

  • Constructor Details

    • FuncPosition

      public FuncPosition()

  • Method Details

    • postCompileStep

      public void postCompileStep​(Compiler compiler)
      Figure out if we're executing a toplevel expression. If so, we can't be inside of a predicate.
      Overrides:
      postCompileStep in class Function

    • getPositionInContextNodeList

      public int getPositionInContextNodeList​(XPathContext xctxt)
      Get the position in the current context node list.
      Parameters:
      xctxt - Runtime XPath context.
      Returns:
      The current position of the itteration in the context node list, or -1 if there is no active context node list.

    • execute

      public XObject execute​(XPathContext xctxt) throws TransformerException
      Execute the function. The function must return a valid object.
      Overrides:
      execute in class Function
      Parameters:
      xctxt - The current execution context.
      Returns:
      A valid XObject.
      Throws:
      TransformerException

    • fixupVariables

      public void fixupVariables​(Vector vars, int globalsSize)
      No arguments to process, so this does nothing.
      Specified by:
      fixupVariables in class Expression
      Parameters:
      vars - List of QNames that correspond to variables. This list should be searched backwards for the first qualified name that corresponds to the variable reference qname. The position of the QName in the vector from the start of the vector will be its position in the stack frame (but variables above the globalsTop value will need to be offset to the current stack frame). NEEDSDOC @param globalsSize