net.sf.saxon.functions
Class StandardFunction.Entry

java.lang.Object
  net.sf.saxon.functions.StandardFunction.Entry

All Implemented Interfaces:

Serializable

Enclosing class:

StandardFunction

public static class StandardFunction.Entry
extends Object
implements Serializable

An entry in the table describing the properties of a function

See Also:

Serialized Form

Field Summary

SequenceType[]	argumentTypes An array holding the types of the arguments to the function
int	cardinality The cardinality of the result of the function
Class	implementationClass The class containing the implementation of this function (always a subclass of SystemFunction)
ItemType	itemType The item type of the result of the function
int	maxArguments The maximum number of arguments permitted
int	minArguments The minimum number of arguments required
String	name The name of the function: a local name in the case of functions in the standard library, or a name with the conventional prefix "saxon:" in the case of Saxon extension functions
int	opcode Some classes support more than one function.
Value[]	resultIfEmpty An array holding, for each declared argument, the value that is to be returned if an empty sequence as the value of this argument allows the result to be determined irrespective of the values of the other arguments; null if there is no such calculation possible

Constructor Summary

StandardFunction.Entry()

Method Summary

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

name

public String name

The name of the function: a local name in the case of functions in the standard library, or a name with the conventional prefix "saxon:" in the case of Saxon extension functions

implementationClass

public Class implementationClass

The class containing the implementation of this function (always a subclass of SystemFunction)

opcode

public int opcode

Some classes support more than one function. In these cases the particular function is defined by an integer opcode, whose meaning is local to the implementation class.

minArguments

public int minArguments

The minimum number of arguments required

maxArguments

public int maxArguments

The maximum number of arguments permitted

itemType

public ItemType itemType

The item type of the result of the function

cardinality

public int cardinality

The cardinality of the result of the function

argumentTypes

public SequenceType[] argumentTypes

An array holding the types of the arguments to the function

resultIfEmpty

public Value[] resultIfEmpty

An array holding, for each declared argument, the value that is to be returned if an empty sequence as the value of this argument allows the result to be determined irrespective of the values of the other arguments; null if there is no such calculation possible

Constructor Detail

StandardFunction.Entry

public StandardFunction.Entry()