org.apache.xpath.functions
Class FunctionOneArg
- ExpressionNode, ExpressionOwner, java.io.Serializable, SourceLocator, XPathVisitable
public class FunctionOneArg
Base class for functions that accept one argument.
asIterator , asIteratorRaw , asNode , assertion , bool , canTraverseOutsideSubtree , deepEquals , error , execute , execute , execute , execute , executeCharsToContentHandler , exprAddChild , exprGetChild , exprGetNumChildren , exprGetParent , exprSetParent , fixupVariables , getColumnNumber , getExpressionOwner , getLineNumber , getPublicId , getSystemId , isNodesetExpr , isStableNumber , num , warn , xstr |
canTraverseOutsideSubtree
public boolean canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside
the current subtree.
- canTraverseOutsideSubtree in interface Expression
- true if traversal outside the context node's subtree can occur.
checkNumberArgs
public void checkNumberArgs(int argNum)
throws WrongNumberArgsException
Check that the number of arguments passed to this function is correct.
- checkNumberArgs in interface Function
argNum
- The number of arguments that is being passed to the function.
fixupVariables
public void fixupVariables(java.util.Vector vars,
int globalsSize)
This function is used to fixup variables from QNames to stack frame
indexes at stylesheet build time.
- fixupVariables in interface Expression
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).
getArg0
public Expression getArg0()
Return the first argument passed to the function (at index 0).
- An expression that represents the first argument passed to the
function.
setArg
public void setArg(Expression arg,
int argNum)
throws WrongNumberArgsException
Set an argument expression for a function. This method is called by the
XPath compiler.
- setArg in interface Function
arg
- non-null expression that represents the argument.argNum
- The argument number index.
Copyright B) 2006 Apache XML Project. All Rights Reserved.