org.jeasy.rules.core

Class InferenceRulesEngine

java.lang.Object

org.jeasy.rules.core.InferenceRulesEngine

All Implemented Interfaces:

RulesEngine

public final class InferenceRulesEngine
extends java.lang.Object
implements RulesEngine

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

Author:

Mahmoud Ben Hassine (mahmoud.benhassine@icloud.com)

Constructor Summary

Constructors

Constructor and 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 and Description
java.util.Map<Rule,java.lang.Boolean>	check(Rules rules, Facts facts) Check rules without firing them.
void	fire(Rules rules, Facts facts) Fire all registered rules on given facts.
RulesEngineParameters	getParameters() Return the rules engine parameters.
java.util.List<RuleListener>	getRuleListeners() Return the list of registered rule listeners.
java.util.List<RulesEngineListener>	getRulesEngineListeners() Return the list of registered rules engine listeners.
void	registerRuleListener(RuleListener ruleListener) Register a rule listener.
void	registerRuleListeners(java.util.List<RuleListener> ruleListeners) Register a list of rule listener.
void	registerRulesEngineListener(RulesEngineListener rulesEngineListener) Register a rules engine listener.
void	registerRulesEngineListeners(java.util.List<RulesEngineListener> rulesEngineListeners) Register a list of rules engine listener.

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

getParameters

public RulesEngineParameters getParameters()

Description copied from interface: RulesEngine

Return the rules engine parameters.

Specified by:

getParameters in interface RulesEngine

Returns:

The rules engine parameters

getRuleListeners

public java.util.List<RuleListener> getRuleListeners()

Description copied from interface: RulesEngine

Return the list of registered rule listeners.

Specified by:

getRuleListeners in interface RulesEngine

Returns:

the list of registered rule listeners

getRulesEngineListeners

public java.util.List<RulesEngineListener> getRulesEngineListeners()

Description copied from interface: RulesEngine

Return the list of registered rules engine listeners.

Specified by:

getRulesEngineListeners in interface RulesEngine

Returns:

the list of registered rules engine listeners

fire

public void fire(Rules rules,
                 Facts facts)

Description copied from interface: RulesEngine

Fire all registered rules on given facts.

Specified by:

fire in interface RulesEngine

check

public java.util.Map<Rule,java.lang.Boolean> check(Rules rules,
                                                   Facts facts)

Description copied from interface: RulesEngine

Check rules without firing them.

Specified by:

check in interface RulesEngine

Returns:

a map with the result of evaluation of each rule

registerRuleListener

public void registerRuleListener(RuleListener ruleListener)

Register a rule listener.

Parameters:

ruleListener - to register

registerRuleListeners

public void registerRuleListeners(java.util.List<RuleListener> ruleListeners)

Register a list of rule listener.

Parameters:

ruleListeners - to register

registerRulesEngineListener

public void registerRulesEngineListener(RulesEngineListener rulesEngineListener)

Register a rules engine listener.

Parameters:

rulesEngineListener - to register

registerRulesEngineListeners

public void registerRulesEngineListeners(java.util.List<RulesEngineListener> rulesEngineListeners)

Register a list of rules engine listener.

Parameters:

rulesEngineListeners - to register