com.saxonica.extra
Class FirstClassFunction

java.lang.Object
  net.sf.saxon.value.Value
      net.sf.saxon.value.AtomicValue
          net.sf.saxon.value.ObjectValue
              com.saxonica.extra.FirstClassFunction

All Implemented Interfaces:

Expression, Item, java.io.Serializable, ValueRepresentation

public class FirstClassFunction

extends ObjectValue

A FirstClassFunction is a value that encapsulates a function; it can therefore be manipulated like any other value: for example it can be assigned to a variable and passed as a parameter to a function. A FirstClassFunction can be created using the extension function saxon:function(), and can be invoked using the extension function saxon:call().

See Also:

Serialized Form

Field Summary

Fields inherited from class net.sf.saxon.value.Value

EMPTY_CLASS_ARRAY

Fields inherited from interface net.sf.saxon.om.ValueRepresentation

EMPTY_VALUE_ARRAY

Fields inherited from interface net.sf.saxon.expr.Expression

EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD

Constructor Summary

FirstClassFunction(UserFunctionCall exp)

Method Summary

static FirstClassFunction	bind(int fingerprint, java.lang.String uri, java.lang.String local, int arity, StaticContext env)
int	getArity()
ValueRepresentation	invoke(ValueRepresentation[] args, XPathContext context)

Methods inherited from class net.sf.saxon.value.ObjectValue

convertPrimitive, convertToJava, effectiveBooleanValue, equals, getItemType, getObject, getStringValue, hashCode, setValue

Methods inherited from class net.sf.saxon.value.AtomicValue

checkPermittedContents, convert, convert, display, evaluateAsString, evaluateItem, getCardinality, getComponent, getImplementationMethod, getLength, getPrimitiveValue, getStringValueCS, getTypedValue, hasBuiltInType, iterate, process, schemaEquals, toString

Methods inherited from class net.sf.saxon.value.Value

asItem, asIterator, asValue, collapseWhitespace, convert, convertJavaObjectToXPath, getDependencies, getIterator, getParentExpression, getSpecialProperties, itemAt, iterateSubExpressions, makeQNameValue, normalizeWhitespace, optimize, promote, reduce, simplify, stringToNumber, trimWhitespace, typeCheck

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FirstClassFunction

public FirstClassFunction(UserFunctionCall exp)

Method Detail

getArity

public int getArity()

bind

public static FirstClassFunction bind(int fingerprint,
                                      java.lang.String uri,
                                      java.lang.String local,
                                      int arity,
                                      StaticContext env)
                               throws XPathException

Throws:

XPathException

invoke

public ValueRepresentation invoke(ValueRepresentation[] args,
                                  XPathContext context)
                           throws XPathException

Throws:

XPathException