fi.hut.tml.xsmiles.mlfc.xforms.xpath.xalan
Class FuncNow

java.lang.Object
  org.apache.xpath.Expression
      org.apache.xpath.functions.Function
          org.apache.xpath.functions.FunctionOneArg
              org.apache.xpath.functions.Function2Args
                  org.apache.xpath.functions.Function3Args
                      org.apache.xpath.functions.FunctionMultiArgs
                          fi.hut.tml.xsmiles.mlfc.xforms.xpath.xalan.FuncNow

All Implemented Interfaces:

org.apache.xpath.ExpressionNode, org.apache.xpath.ExpressionOwner, java.io.Serializable, javax.xml.transform.SourceLocator, org.apache.xpath.XPathVisitable

public class FuncNow

extends org.apache.xpath.functions.FunctionMultiArgs

Execute the instance() function. This is just a wrapper for Xalan, the real implementation is in XFormsXPathExtensionHandler

See Also:

Serialized Form

Constructor Summary

FuncNow()

Method Summary

void	checkNumberArgs(int argNum) Check that the number of arguments passed to this function is correct.
org.apache.xpath.objects.XObject	execute(org.apache.xpath.XPathContext xctxt) Execute the function.
boolean	isNodesetExpr() Tell if the expression is a nodeset expression.

Methods inherited from class org.apache.xpath.functions.FunctionMultiArgs

callArgVisitors, canTraverseOutsideSubtree, deepEquals, fixupVariables, getArgs, reportWrongNumberArgs, setArg

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

getArg2

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

getArg1

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

getArg0, getExpression, setExpression

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

callVisitors, postCompileStep

Methods inherited from class org.apache.xpath.Expression

asIterator, asIteratorRaw, asNode, assertion, bool, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isSameClass, isStableNumber, num, warn, xstr

Methods inherited from class java.lang.Object

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

Constructor Detail

FuncNow

public FuncNow()

Method Detail

execute

public org.apache.xpath.objects.XObject execute(org.apache.xpath.XPathContext xctxt)
                                         throws javax.xml.transform.TransformerException

Execute the function. The function must return a valid object.

Parameters:

xctxt - The current execution context.

Returns:

A valid XObject.

Throws:

javax.xml.transform.TransformerException

isNodesetExpr

public boolean isNodesetExpr()

Tell if the expression is a nodeset expression. In other words, tell if you can execute asNode without an exception.

Returns:

true if the expression can be represented as a nodeset.

checkNumberArgs

public void checkNumberArgs(int argNum)
                     throws org.apache.xpath.functions.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:

org.apache.xpath.functions.WrongNumberArgsException