model

Class ReactiveRuleSet

java.lang.Object

model.ReactiveRuleSet

public class ReactiveRuleSet
extends Object

This singleton class represents the set of all reactive rules of the LPS framework.

The reactive rules are stored as ReactiveRule in an List.

The constructor is private as you must not use it. Instead use the getInstance() method to get the only object of the class (or to create it).

Author:

Alexandre Camus

Field Summary

Fields

Modifier and Type	Field and Description
private static ReactiveRuleSet	instance
(package private) List<ReactiveRule>	reactiveRules

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ReactiveRuleSet(ReactiveRule... reactiveRules) Constructor of the class.

Method Summary

Methods

Modifier and Type	Method and Description
void	addRule(ReactiveRule rule) Adds the specified reactive rule.
List<SimpleSentence>	fireRules(RuleSet ruleSet, List<String> events) Fires all the reactive rules it contains thanks to there own fireRule() method.
static ReactiveRuleSet	getInstance() This is the method to get an instance of the class.
String	toString() Returns the set in the form of: "Reactive rules: [(conditions) -> goal, (conditions) -> goal, ...]".

Methods inherited from class java.lang.Object

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

Field Detail

reactiveRules

List<ReactiveRule> reactiveRules

instance

private static volatile ReactiveRuleSet instance

Constructor Detail

ReactiveRuleSet

private ReactiveRuleSet(ReactiveRule... reactiveRules)

Constructor of the class. It is private as it must not be called. Use the method getInstance() instead.

Method Detail

getInstance

public static ReactiveRuleSet getInstance()

This is the method to get an instance of the class. Use it as shown: ReactiveRuleSet.getInstance()

Returns:

the only instance of the class ReactiveRuleSet.

addRule

public void addRule(ReactiveRule rule)

Adds the specified reactive rule.

Parameters:

rule - the ReactiveRule object representing the reactive rule to add.

fireRules

public List<SimpleSentence> fireRules(RuleSet ruleSet,
                             List<String> events)

Fires all the reactive rules it contains thanks to there own fireRule() method. It returns all the goals in order to push them into the list of the goals to solve.

Parameters:

ruleSet - the table of truth to which the conditions are submitted to be checked.

events - the events/actions that have been performed on the database during this cycle.

Returns:

an List object containing all the fired goals.

toString

public String toString()

Returns the set in the form of: "Reactive rules: [(conditions) -> goal, (conditions) -> goal, ...]".

Overrides:

toString in class Object

See Also:

Object.toString()