org.apache.xpath.functions
Class FuncLast

java.lang.Object
  |
  +--org.apache.xpath.Expression
        |
        +--org.apache.xpath.functions.Function
              |
              +--org.apache.xpath.functions.FuncLast

public class FuncLast
extends Function

Execute the Last() function.

See Also:
Serialized Form
Usage:
**For advanced use only**

Constructor Summary
FuncLast()
           
 
Method Summary
 XObject execute(XPathContext xctxt)
          Execute the function.
 void fixupVariables(java.util.Vector vars, int globalsSize)
          No arguments to process, so this does nothing.
 int getCountOfContextNodeList(XPathContext xctxt)
          Get the position in the current context node list.
 void postCompileStep(Compiler compiler)
          Figure out if we're executing a toplevel expression.
 
Methods inherited from class org.apache.xpath.functions.Function
callArgVisitors, callVisitors, checkNumberArgs, deepEquals, setArg
 
Methods inherited from class org.apache.xpath.Expression
asIterator, asIteratorRaw, asNode, assertion, bool, canTraverseOutsideSubtree, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, num, warn, xstr
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FuncLast

public FuncLast()
Method Detail

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

getCountOfContextNodeList

public int getCountOfContextNodeList(XPathContext xctxt)
                              throws TransformerException
Get the position in the current context node list.
Parameters:
xctxt - non-null reference to XPath runtime context.
Returns:
The number of nodes in the list.
Throws:
TransformerException -  

execute

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

fixupVariables

public void fixupVariables(java.util.Vector vars,
                           int globalsSize)
No arguments to process, so this does nothing.
Overrides:
fixupVariables in class Expression


Copyright 2006 Apache XML Project. All Rights Reserved.