org.apache.xpath.functions
Classes 
FuncBoolean
FuncCeiling
FuncConcat
FuncContains
FuncCount
FuncCurrent
FuncDoclocation
FuncExtElementAvailable
FuncExtFunction
FuncExtFunctionAvailable
FuncFalse
FuncFloor
FuncGenerateId
FuncId
FuncLang
FuncLast
FuncLocalPart
FuncNamespace
FuncNormalizeSpace
FuncNot
FuncNumber
FuncPosition
FuncQname
FuncRound
FuncStartsWith
FuncString
FuncStringLength
FuncSubstring
FuncSubstringAfter
FuncSubstringBefore
FuncSum
FuncSystemProperty
Function
Function2Args
Function3Args
FunctionDef1Arg
FunctionMultiArgs
FunctionOneArg
FuncTranslate
FuncTrue
FuncUnparsedEntityURI
Exceptions 
WrongNumberArgsException