jess
Class FuncallValue

java.lang.Object
  |
  +--jess.Value
        |
        +--jess.FuncallValue

All Implemented Interfaces:

java.io.Serializable

public class FuncallValue

extends Value

implements java.io.Serializable

A class to represent a Jess function call stored in a Value. It is 'self-resolving' using Context

(C) 1998 E.J. Friedman-Hill and the Sandia Corporation

Author:

Ernest J. Friedman-Hill

See Also:

Serialized Form

Constructor Summary

FuncallValue(Funcall f)

Method Summary

java.lang.String	atomValue(Context c) Returns the contents of this value, as an atom
java.lang.Object	externalAddressValue(Context c) Returns the contents of this value, as an external adress object
Fact	factValue(Context c) Returns the contents of this value, as a fact
double	floatValue(Context c) Returns the contents of this value, as a number
int	intValue(Context c) Returns the contents of this value, as an int
ValueVector	listValue(Context c) Returns the contents of this value, as a list
double	numericValue(Context c) Returns the contents of this value, as a number
Value	resolveValue(Context c) Given an evaluation context, return the "true value" of this Value.
java.lang.String	stringValue(Context c) Returns the contents of this value, as a String
java.lang.String	variableValue(Context c) Returns the contents of this value, as a String (a variable name)

Methods inherited from class jess.Value

equals, equals, equalsStar, funcallValue, hashCode, longValue, toString, toStringWithParens, type

Methods inherited from class java.lang.Object

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

Constructor Detail

FuncallValue

public FuncallValue(Funcall f)
             throws JessException

Parameters:

value -

type -

Throws:

JessException -

Method Detail

resolveValue

public Value resolveValue(Context c)
                   throws JessException

Description copied from class: Value

Given an evaluation context, return the "true value" of this Value. For this class, the true value is always "this". For subclasses, the Context may be used to compute a new Value.

Overrides:

resolveValue in class Value

Following copied from class: jess.Value

Parameters:

c - An execution context. You can pass null if you are sure that you're not calling this method on a subclass that uses the argument.

Returns:

This object

See Also:

Variable, Funcall

externalAddressValue

public final java.lang.Object externalAddressValue(Context c)
                                            throws JessException

Description copied from class: Value

Returns the contents of this value, as an external adress object

Overrides:

externalAddressValue in class Value

Following copied from class: jess.Value

Returns:

The external address object

Throws:

JessException - If this value does not contain an object

factValue

public final Fact factValue(Context c)
                     throws JessException

Description copied from class: Value

Returns the contents of this value, as a fact

Overrides:

factValue in class Value

Following copied from class: jess.Value

Returns:

The fact

Throws:

JessException - If this value does not contain a fact

listValue

public final ValueVector listValue(Context c)
                            throws JessException

Description copied from class: Value

Returns the contents of this value, as a list

Overrides:

listValue in class Value

Following copied from class: jess.Value

Returns:

The list

Throws:

JessException - If this value does not contain a list

intValue

public final int intValue(Context c)
                   throws JessException

Description copied from class: Value

Returns the contents of this value, as an int

Overrides:

intValue in class Value

Following copied from class: jess.Value

Returns:

The number as an int

Throws:

JessException - If this value does not contain any kind of number

floatValue

public final double floatValue(Context c)
                        throws JessException

Description copied from class: Value

Returns the contents of this value, as a number

Overrides:

floatValue in class Value

Following copied from class: jess.Value

Returns:

The number as a double

Throws:

JessException - If this value does not contain any kind of number

numericValue

public final double numericValue(Context c)
                          throws JessException

Description copied from class: Value

Returns the contents of this value, as a number

Overrides:

numericValue in class Value

Following copied from class: jess.Value

Returns:

The number as a double

Throws:

JessException - If this value does not contain any kind of number

atomValue

public final java.lang.String atomValue(Context c)
                                 throws JessException

Description copied from class: Value

Returns the contents of this value, as an atom

Overrides:

atomValue in class Value

Following copied from class: jess.Value

Returns:

The atom

Throws:

JessException - If this value does not contain any kind of String

variableValue

public final java.lang.String variableValue(Context c)
                                     throws JessException

Description copied from class: Value

Returns the contents of this value, as a String (a variable name)

Overrides:

variableValue in class Value

Following copied from class: jess.Value

Returns:

The name of the variable

Throws:

JessException - If this value does not contain a variable

stringValue

public final java.lang.String stringValue(Context c)
                                   throws JessException

Description copied from class: Value

Returns the contents of this value, as a String

Overrides:

stringValue in class Value

Following copied from class: jess.Value

Returns:

The string

Throws:

JessException - If this value does not contain any kind of String