Package net.sf.saxon.functions.hof
Class SystemFunctionWithBoundContextItem
java.lang.Object
net.sf.saxon.functions.AbstractFunction
net.sf.saxon.functions.hof.SystemFunctionWithBoundContextItem
- All Implemented Interfaces:
Callable
,FunctionItem
,GroundedValue
,Item
,Sequence
A Callable that wraps another Callable and a Dynamic Context, in effect acting as a closure that
executes the original callable with a saved context.
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Constructor Summary
ConstructorsConstructorDescriptionSystemFunctionWithBoundContextItem
(SystemFunction target, XPathContext context) -
Method Summary
Modifier and TypeMethodDescriptioncall
(XPathContext context, Sequence[] arguments) Evaluate the expressionint
getArity()
Get the arity of the functionGet a description of this function for use in error messages.Get the item type of the function itemGet the name of the function, or null if it is anonymousMethods inherited from class net.sf.saxon.functions.AbstractFunction
atomize, deepEqual40, deepEquals, effectiveBooleanValue, export, getAnnotations, getOperandRoles, getUnicodeStringValue, isArray, isMap, isTrustedResultType, makeNewContext, simplify, toShortString, typeCheck
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface net.sf.saxon.om.FunctionItem
getGenre, isSequenceVariadic
Methods inherited from interface net.sf.saxon.om.GroundedValue
asIterable, concatenate, containsNode, materialize
Methods inherited from interface net.sf.saxon.om.Item
getLength, getStringValue, head, isStreamed, itemAt, iterate, reduce, subsequence
Methods inherited from interface net.sf.saxon.om.Sequence
makeRepeatable
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Constructor Details
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SystemFunctionWithBoundContextItem
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Method Details
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call
Evaluate the expression- Parameters:
context
- the dynamic evaluation contextarguments
- the values of the arguments, supplied as SequenceIterators- Returns:
- the result of the evaluation, in the form of a SequenceIterator
- Throws:
XPathException
- if a dynamic error occurs during the evaluation of the expression
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getArity
public int getArity()Get the arity of the function- Returns:
- the number of arguments in the function signature
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getFunctionItemType
Get the item type of the function item- Returns:
- the function item's type
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getFunctionName
Get the name of the function, or null if it is anonymous- Returns:
- the function name, or null for an anonymous inline function
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getDescription
Get a description of this function for use in error messages. For named functions, the description is the function name (as a lexical QName). For others, it might be, for example, "inline function", or "partially-applied ends-with function".- Returns:
- a description of the function for use in error messages
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