weblogic.apache.xpath.functions
Class FunctionMultiArgs

java.lang.Object
  |
  +--weblogic.apache.xpath.Expression
        |
        +--weblogic.apache.xpath.functions.Function
              |
              +--weblogic.apache.xpath.functions.FunctionOneArg
                    |
                    +--weblogic.apache.xpath.functions.Function2Args
                          |
                          +--weblogic.apache.xpath.functions.Function3Args
                                |
                                +--weblogic.apache.xpath.functions.FunctionMultiArgs

Direct Known Subclasses:

FuncConcat

public class FunctionMultiArgs

extends Function3Args

Base class for functions that accept an undetermined number of multiple arguments.

This class is based on an implementation from the Apache XML Project. In future releases the XML parser, XSLT processor, and associated classes will likely be updated to be based on a later version of the Apache implementations. Since Apache does not guarantee backwards compatibility between versions of their software, we cannot guarantee backwards compatibility of any of the classes contained in the weblogic.apache package or sub-packages.

See Also:

Serialized Form

Fields inherited from class weblogic.apache.xpath.Expression

m_slocator

Constructor Summary

FunctionMultiArgs()

Method Summary

boolean	canTraverseOutsideSubtree() Tell if this expression or it's subexpressions can traverse outside the current subtree.
void	checkNumberArgs(int argNum) Check that the number of arguments passed to this function is correct.
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.
void	setArg(Expression arg, int argNum) Set an argument expression for a function.

Methods inherited from class weblogic.apache.xpath.functions.Function3Args

getArg2

Methods inherited from class weblogic.apache.xpath.functions.Function2Args

getArg1

Methods inherited from class weblogic.apache.xpath.functions.FunctionOneArg

getArg0

Methods inherited from class weblogic.apache.xpath.functions.Function

execute

Methods inherited from class weblogic.apache.xpath.Expression

asIterator, asNode, assertion, bool, error, execute, execute, executeCharsToContentHandler, isNodesetExpr, isStableNumber, num, setSourceLocator, warn, xstr

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FunctionMultiArgs

public FunctionMultiArgs()

Method Detail

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.

Parameters:

arg - non-null expression that represents the argument.

argNum - The argument number index.

Throws:

WrongNumberArgsException - If a derived class determines that the number of arguments is incorrect.

Overrides:

setArg in class Function3Args

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.

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).

Overrides:

fixupVariables in class Function3Args

checkNumberArgs

public void checkNumberArgs(int argNum)
                     throws WrongNumberArgsException

Check that the number of arguments passed to this function is correct.

Parameters:

argNum - The number of arguments that is being passed to the function.

Throws:

WrongNumberArgsException -

Overrides:

checkNumberArgs in class Function3Args

canTraverseOutsideSubtree

public boolean canTraverseOutsideSubtree()

Tell if this expression or it's subexpressions can traverse outside the current subtree.

Returns:

true if traversal outside the context node's subtree can occur.

Overrides:

canTraverseOutsideSubtree in class Function3Args