jess
Class Defrule
java.lang.Object
|
+--jess.Node
|
+--jess.HasLHS
|
+--jess.Defrule
- All Implemented Interfaces:
- java.io.Serializable
- public class Defrule
- extends HasLHS
- implements java.io.Serializable
Class used to represent Defrules. These are constructed by the parser.
(C) 1997 Ernest J. Friedman-Hill and Sandia National Laboratories
- Author:
- Ernest J. Friedman-Hill
- See Also:
- Serialized Form
Method Summary |
boolean |
callNodeLeft(Token token)
All we need to do is create or destroy the appropriate Activation
object, which contains enough info to fire a rule. |
int |
evalSalience()
Evaluate the salience of this rule. |
Funcall |
getAction(int idx)
Fetch the idx-th RHS action of this rule |
int |
getNActions()
Fetch the number of actions on this rule's RHS |
int |
getSalience()
Fetch the salience setting of this rule |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
getSalience
public final int getSalience()
- Fetch the salience setting of this rule
- Returns:
- The salience of this defrule
evalSalience
public int evalSalience()
throws JessException
- Evaluate the salience of this rule. If the salience was set to a
Funcall value during parsing, then this function may return
different values over time. If the salience is constant, this is
equivalent to getSalience.
- Parameters:
engine
- The Rete engine the rule belongs to- Returns:
- The evaluated salience
- Throws:
JessException
- If something goes wrong
callNodeLeft
public boolean callNodeLeft(Token token)
throws JessException
- All we need to do is create or destroy the appropriate Activation
object, which contains enough info to fire a rule.
- Parameters:
token
- callType
- - Returns:
-
- Throws:
JessException
-
getNActions
public int getNActions()
- Fetch the number of actions on this rule's RHS
- Returns:
- The number of actions
getAction
public Funcall getAction(int idx)
- Fetch the idx-th RHS action of this rule
- Returns:
- The action as a Funcall