BooleanFunction
, CeilingFunction
, ConcatFunction
, ContainsFunction
, CountFunction
, DocumentFunction
, EndsWithFunction
, EvaluateFunction
, FalseFunction
, FloorFunction
, IdFunction
, LangFunction
, LastFunction
, LocaleFunctionSupport
, LocalNameFunction
, LowerFunction
, NameFunction
, NamespaceUriFunction
, NormalizeSpaceFunction
, NotFunction
, NumberFunction
, PositionFunction
, RoundFunction
, StartsWithFunction
, StringFunction
, StringLengthFunction
, SubstringAfterFunction
, SubstringBeforeFunction
, SubstringFunction
, SumFunction
, TranslateFunction
, TrueFunction
, UpperFunction
public interface Function
NOTE: This class is not typically used directly, but is exposed for writers of extended XPath packages.
Implementations of Function
are functors
which are used to evaluate a function-call within an
XPath expression.
FunctionContext
Modifier and Type | Method | Description |
---|---|---|
java.lang.Object |
call(Context context,
java.util.List args) |
Evaluate this function.
|
java.lang.Object call(Context context, java.util.List args) throws FunctionCallException
context
- the context at the point in the
expression when the function is calledargs
- arguments provided to the functionList
(node-set), Double
, Boolean
, or
String
FunctionCallException
- if an XPath error occurs during evaluation;
for instance, if the number or type of the arguments is incorrectCopyright © 2001–2018 Codehaus. All rights reserved.