net.sf.saxon.expr

Class ListCastableFunction

java.lang.Object

net.sf.saxon.om.AbstractItem

net.sf.saxon.functions.AbstractFunction

net.sf.saxon.expr.ListConstructorFunction

net.sf.saxon.expr.ListCastableFunction

All Implemented Interfaces:

Callable, Function, GroundedValue, Item, Sequence

public class ListCastableFunction
extends ListConstructorFunction

A function item representing a castability test for a list type

Field Summary

Fields inherited from class net.sf.saxon.expr.ListConstructorFunction

allowEmpty, memberType, nsResolver, targetType

Constructor Summary

Constructors

Constructor and Description
ListCastableFunction(ListType targetType, NamespaceResolver resolver, boolean allowEmpty) Create the constructor function.

Method Summary

Modifier and Type	Method and Description
BooleanValue	call(XPathContext context, Sequence[] args) Invoke the function
FunctionItemType	getFunctionItemType() Get the item type of the function item
StructuredQName	getFunctionName() Get the name of the function, or null if it is anonymous

Methods inherited from class net.sf.saxon.expr.ListConstructorFunction

getArity, getDescription, getMemberType, getTargetType, isAllowEmpty

Methods inherited from class net.sf.saxon.functions.AbstractFunction

atomize, deepEquals, effectiveBooleanValue, export, getAnnotations, getOperandRoles, getStringValue, getStringValueCS, isArray, isMap, isTrustedResultType, makeNewContext, simplify, typeCheck

Methods inherited from class net.sf.saxon.om.AbstractItem

getLength, head, isStreamed, itemAt, iterate, reduce, subsequence

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

iterate

Methods inherited from interface net.sf.saxon.om.Item

head

Methods inherited from interface net.sf.saxon.om.GroundedValue

getLength, head, itemAt, reduce, subsequence

Constructor Detail

ListCastableFunction

public ListCastableFunction(ListType targetType,
                            NamespaceResolver resolver,
                            boolean allowEmpty)
                     throws MissingComponentException

Create the constructor function.

Parameters:

targetType - the type to which the function will convert its input

resolver - namespace resolver for use if the target type is namespace-sensitive

Throws:

MissingComponentException

Method Detail

getFunctionItemType

public FunctionItemType getFunctionItemType()

Get the item type of the function item

Specified by:

getFunctionItemType in interface Function

Overrides:

getFunctionItemType in class ListConstructorFunction

Returns:

the function item's type

getFunctionName

public StructuredQName getFunctionName()

Get the name of the function, or null if it is anonymous

Specified by:

getFunctionName in interface Function

Overrides:

getFunctionName in class ListConstructorFunction

Returns:

the function name, or null for an anonymous inline function

call

public BooleanValue call(XPathContext context,
                         Sequence[] args)
                  throws XPathException

Invoke the function

Specified by:

call in interface Callable

Specified by:

call in interface Function

Overrides:

call in class ListConstructorFunction

Parameters:

context - the XPath dynamic evaluation context

args - the actual arguments to be supplied

Returns:

the result of invoking the function

Throws:

XPathException - if a dynamic error occurs within the function