org.mule.module.bpm

Interface RulesEngine

All Superinterfaces:

NameableObject, NamedObject

All Known Implementing Classes:

Drools

public interface RulesEngine
extends NameableObject

A generic interface for any Rules Engine. Theoretically, any Rules Engine can be "plugged into" Mule if it implements this interface.

See Also:

MessageService

Method Summary

Methods

Modifier and Type	Method and Description
Object	assertEvent(Rules ruleset, Object event, String entryPoint) Add an event to the event stream.
Object	assertFact(Rules ruleset, Object fact) Assert a fact in the knowledge base.
Object	createSession(Rules ruleset) Create a provider-specific session for interacting with the Rules Engine.
void	disposeSession(Object session) Dispose of a provider-specific session if necessary.
void	retractFact(Rules ruleset, Object fact) Retract a fact from the knowledge base.
void	setMessageService(MessageService messageService) Inject a callback so that the Rules Engine may generate messages within Mule.

Methods inherited from interface org.mule.api.NameableObject

setName

Methods inherited from interface org.mule.api.NamedObject

getName

Method Detail

setMessageService

void setMessageService(MessageService messageService)

Inject a callback so that the Rules Engine may generate messages within Mule. This method is REQUIRED.

Parameters:

messageService - An interface within Mule which the rules may call to generate Mule messages.

createSession

Object createSession(Rules ruleset)
                     throws Exception

Create a provider-specific session for interacting with the Rules Engine. This method is REQUIRED.

Parameters:

ruleset -

Returns:

an initialized rules session

Throws:

Exception

disposeSession

void disposeSession(Object session)
                    throws Exception

Dispose of a provider-specific session if necessary. This method is OPTIONAL.

Parameters:

session - - an initialized rules session

Throws:

Exception

assertFact

Object assertFact(Rules ruleset,
                Object fact)
                  throws Exception

Assert a fact in the knowledge base. This method is REQUIRED.

Parameters:

ruleset -

fact - to assert

Returns:

a handle to the fact for future reference

Throws:

Exception

retractFact

void retractFact(Rules ruleset,
               Object fact)
                 throws Exception

Retract a fact from the knowledge base. This method is REQUIRED.

Parameters:

ruleset -

fact - to retract

Throws:

Exception

assertEvent

Object assertEvent(Rules ruleset,
                 Object event,
                 String entryPoint)
                   throws Exception

Add an event to the event stream. This is used for CEP. This method is OPTIONAL.

Parameters:

ruleset -

event -

entryPoint - for the event stream

Returns:

a handle to the event for future reference

Throws:

Exception