Saxon.Api

Class DocumentBuilder

Class DomDestination

Class DynamicContext

Class DynamicError

Class EmptyEnumerator

Class ExtensionFunctionCall

Class ExtensionFunctionDefinition

Class NullDestination

Class Processor

Class QName

Class SchemaManager

Class SchemaValidator

Class Serializer

Class StaticContext

Class StaticError

Class TextWriterDestination

Class XPathCompiler

Class XPathExecutable

Class XPathSelector

Class XQueryCompiler

Class XQueryEvaluator

Class XQueryExecutable

Class XdmAnyFunctionType

Class XdmAnyItemType

Class XdmAnyNodeType

Class XdmAtomicType

Class XdmAtomicValue

Class XdmDestination

Class XdmEmptySequence

Class XdmFunctionItem

Class XdmItem

Class XdmItemType

Class XdmNode

Class XdmNodeKind

Class XdmSequenceType

Class XdmValue

Class XmlDestination

Class XsltCompiler

Class XsltExecutable

Class XsltTransformer

Enum RecoveryPolicy

Enum SchemaValidationMode

Enum TreeModel

Enum WhitespacePolicy

Enum XdmAxis

Interface IMessageListener

Interface IQueryResolver

Interface IResultDocumentHandler

Interface IXdmEnumerator

Interface IXmlLocation

Interface SchemaResolver

 

Saxon.Api
Class XdmFunctionItem 

public class XdmFunctionItem
extends XdmItem

The class XdmFunctionItem represents an item in an XPath 3.0 sequence that represents a function.

Note that there is no guarantee that every XdmValue comprising a single function item will be an instance of this class. To force this, use the Simplify property of the XdmValue.

At present the only way of creating an instance of this class is as the result of an XPath or XQuery expression that returns a function item. Note that this feature requires XPath 3.0 or XQuery 3.0 to be enabled, which in turn requires use of Saxon-EE.

Property Summary
 QName FunctionName

The name of the function, as a QName. The result will be null if the function is anonymous.

 int Arity

The arity of the function, that is, the number of arguments it expects

 
Method Summary
 bool IsAtomic()

Determine whether the item is an atomic value

 XdmValue invoke(Saxon.Api.XdmValue[] arguments, Processor processor)

Invoke the function

 
Property Detail

FunctionName

public QName FunctionName {get; }

The name of the function, as a QName. The result will be null if the function is anonymous.

Arity

public int Arity {get; }

The arity of the function, that is, the number of arguments it expects

Method Detail

IsAtomic

public override bool IsAtomic()

Determine whether the item is an atomic value

returns
false (a function item is not an atomic value)

invoke

public XdmValue invoke(Saxon.Api.XdmValue[] arguments,
              Processor processor)

Invoke the function

Parameters:
arguments -
The arguments to the function
processor -
The Saxon processor, used to provide context information
returns
The result of calling the function