Package org.jeasy.rules.core

Class InferenceRulesEngine

java.lang.Object

org.jeasy.rules.core.AbstractRulesEngine

org.jeasy.rules.core.InferenceRulesEngine

All Implemented Interfaces:

RulesEngine

public final class InferenceRulesEngine
extends AbstractRulesEngine

Inference RulesEngine implementation.

Rules are selected based on given facts and fired according to their natural order which is priority by default. This implementation continuously selects and fires rules until no more rules are applicable.

Author:

Mahmoud Ben Hassine ([email protected])

Constructor Summary

Constructors

Constructor	Description
InferenceRulesEngine()	Create a new inference rules engine with default parameters.
InferenceRulesEngine(RulesEngineParameters parameters)	Create a new inference rules engine.

Method Summary

Modifier and Type	Method	Description
Map<Rule,Boolean>	check(Rules rules, Facts facts)	Check rules without firing them.
void	fire(Rules rules, Facts facts)	Fire all registered rules on given facts.
void	registerRuleListener(RuleListener ruleListener)	Register a rule listener.
void	registerRuleListeners(List<RuleListener> ruleListeners)	Register a list of rule listener.
void	registerRulesEngineListener(RulesEngineListener rulesEngineListener)	Register a rules engine listener.
void	registerRulesEngineListeners(List<RulesEngineListener> rulesEngineListeners)	Register a list of rules engine listener.

Methods inherited from class org.jeasy.rules.core.AbstractRulesEngine

getParameters, getRuleListeners, getRulesEngineListeners

Methods inherited from class java.lang.Object

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

Constructor Detail

InferenceRulesEngine

public InferenceRulesEngine()

Create a new inference rules engine with default parameters.

InferenceRulesEngine

public InferenceRulesEngine(RulesEngineParameters parameters)

Create a new inference rules engine.

Parameters:

parameters - of the engine

Method Detail

fire

public void fire(Rules rules,
                 Facts facts)

Description copied from interface: RulesEngine

Fire all registered rules on given facts.

check

public Map<Rule,Boolean> check(Rules rules,
                                     Facts facts)

Description copied from interface: RulesEngine

Check rules without firing them.

Returns:

a map with the result of evaluation of each rule

registerRuleListener

public void registerRuleListener(RuleListener ruleListener)

Register a rule listener.

Overrides:

registerRuleListener in class AbstractRulesEngine

Parameters:

ruleListener - to register

registerRuleListeners

public void registerRuleListeners(List<RuleListener> ruleListeners)

Register a list of rule listener.

Overrides:

registerRuleListeners in class AbstractRulesEngine

Parameters:

ruleListeners - to register

registerRulesEngineListener

public void registerRulesEngineListener(RulesEngineListener rulesEngineListener)

Register a rules engine listener.

Overrides:

registerRulesEngineListener in class AbstractRulesEngine

Parameters:

rulesEngineListener - to register

registerRulesEngineListeners

public void registerRulesEngineListeners(List<RulesEngineListener> rulesEngineListeners)

Register a list of rules engine listener.

Overrides:

registerRulesEngineListeners in class AbstractRulesEngine

Parameters:

rulesEngineListeners - to register