Package net.sf.saxon.functions.hof
Class AtomicConstructorFunction
java.lang.Object
net.sf.saxon.functions.AbstractFunction
net.sf.saxon.functions.hof.AtomicConstructorFunction
- All Implemented Interfaces:
Callable
,Function
,GroundedValue
,Item
,Sequence
A function item representing a constructor function for an atomic type
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Constructor Summary
ConstructorsConstructorDescriptionAtomicConstructorFunction
(AtomicType targetType, NamespaceResolver resolver) Create the constructor function. -
Method Summary
Modifier and TypeMethodDescriptioncall
(XPathContext context, Sequence[] args) Invoke the functionvoid
Output information about this function item to the diagnostic explain() outputint
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 anonymousboolean
Check that result type is SystemFunction or AtomicConstructorFunctionMethods inherited from class net.sf.saxon.functions.AbstractFunction
atomize, deepEquals, effectiveBooleanValue, getAnnotations, getOperandRoles, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, 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.Function
getGenre, toShortString
Methods inherited from interface net.sf.saxon.om.GroundedValue
asIterable, concatenate, containsNode, materialize
Methods inherited from interface net.sf.saxon.om.Item
getLength, 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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AtomicConstructorFunction
Create the constructor function.- Parameters:
targetType
- the type to which the function will convert its inputresolver
- namespace resolver for use if the target type is namespace-sensitive
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Method Details
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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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getArity
public int getArity()Get the arity of the function- Returns:
- the number of arguments in the function signature
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call
Invoke the function- Parameters:
context
- the XPath dynamic evaluation contextargs
- the actual arguments to be supplied- Returns:
- the result of invoking the function
- Throws:
XPathException
- if a dynamic error occurs within the function
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export
Description copied from class:AbstractFunction
Output information about this function item to the diagnostic explain() output- Specified by:
export
in interfaceFunction
- Overrides:
export
in classAbstractFunction
- Throws:
XPathException
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isTrustedResultType
public boolean isTrustedResultType()Description copied from class:AbstractFunction
Check that result type is SystemFunction or AtomicConstructorFunction- Specified by:
isTrustedResultType
in interfaceFunction
- Overrides:
isTrustedResultType
in classAbstractFunction
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