Package com.aquima.interactions.expressions.functions.unknown

Class IsUnknownFunction

java.lang.Object

com.aquima.interactions.expressions.functions.unknown.IsUnknownFunction

All Implemented Interfaces:

IFunction, Serializable

public class IsUnknownFunction
extends Object
implements IFunction

Function that returns the value of the first or second parameter depending on whether the first parameter is unknown. If the first parameter is not unknown the first value is returned, else the value of the second parameter is returned.

 result := (first != unknown) ? first : second
 

Since:

6.4

Author:

F. van der Meer, O. Kerpershoek

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
IsUnknownFunction(DataType datatype, boolean multivalue)	Constructs the function with the required arguments.

Method Summary

Modifier and Type	Method	Description
Type	determineResultType(ISemanticNode... arguments)	This method is used to determine the result type of the function using the type information of the parameters that will be passed to the function.
IValue	evaluate(IArgumentList arguments)	This method should execute the function using the supplied arguments.
IArgumentType[]	getArguments()	This method returns an array containing the definitions of the arguments the function expects.
String	getName()	This method returns the name of the function.
boolean	isDeprecated()	This method returns a boolean indicating that the function is deprecated and should no longer be used.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IsUnknownFunction

public IsUnknownFunction(DataType datatype,
                         boolean multivalue)

Constructs the function with the required arguments.

Parameters:

datatype - The type of the parameters.

multivalue - Boolean indicating if the parameters should be list values.

Method Detail

evaluate

public IValue evaluate(IArgumentList arguments)

Description copied from interface: IFunction

This method should execute the function using the supplied arguments.

Specified by:

evaluate in interface IFunction

Parameters:

arguments - The arguments for the function.

Returns:

The result of the function.

getArguments

public IArgumentType[] getArguments()

Description copied from interface: IFunction

This method returns an array containing the definitions of the arguments the function expects. When the function does not accept any arguments at all, an empty array should be returned.

Specified by:

getArguments in interface IFunction

Returns:

Array containing the definitions of the parameters.

getName

public String getName()

Description copied from interface: IFunction

This method returns the name of the function.

Specified by:

getName in interface IFunction

Returns:

the name of the function.

determineResultType

public Type determineResultType(ISemanticNode... arguments)

Description copied from interface: IFunction

This method is used to determine the result type of the function using the type information of the parameters that will be passed to the function.

Specified by:

determineResultType in interface IFunction

Parameters:

arguments - The type information of the parameters.

Returns:

The result type of the function.

isDeprecated

public boolean isDeprecated()

Description copied from interface: IFunction

This method returns a boolean indicating that the function is deprecated and should no longer be used. Functions that are not deprecated should return the value false.

Specified by:

isDeprecated in interface IFunction

Returns:

A message indicating that the function is deprecated.

toString

public String toString()

Overrides:

toString in class Object