Package org.evrete.api

Interface RuleSession<S extends RuleSession<S>>

All Superinterfaces:

Environment, EvaluationListeners, EvaluatorsContext, FluentEnvironment<S>, FluentImports<S>, RuleSet<RuntimeRule>, RuleSetContext<S,RuntimeRule>, RuntimeContext<S>

All Known Subinterfaces:

StatefulSession, StatelessSession

public interface RuleSession<S extends RuleSession<S>>
extends RuleSetContext<S,RuntimeRule>

Base interface for both stateful and stateless sessions

Field Summary

Fields inherited from interface org.evrete.api.RuntimeContext

SALIENCE_COMPARATOR

Method Summary

Modifier and Type	Method	Description
S	addEventListener(SessionLifecycleListener listener)
<T> Collector<T,?,S>	asCollector()	A convenience method that returns an instance of Collector for inserting streams of facts.
Object	fire()
ActivationManager	getActivationManager()
Knowledge	getParentContext()
default S	insert(Iterable<?> objects)	Inserts a collection of facts.
default FactHandle	insert(Object fact)	Inserts a fact in working memory and returns a serializable fact handle.
default S	insert(Object... objects)	Inserts an array of facts.
FactHandle	insert0(Object fact, boolean resolveCollections)	Inserts a fact in working memory and returns a serializable fact handle.
FactHandle	insert0(String type, Object fact, boolean resolveCollections)	Inserts a fact and explicitly specifies its Type name.
default S	insertAs(String type, Iterable<?> objects)	Inserts a collection of facts, marking them as being of a specific type.
default FactHandle	insertAs(String type, Object fact)	Inserts a fact and explicitly specifies its Type name.
default S	insertAs(String type, Object... objects)	Inserts a collection of facts, marking them as being of a specific type.
S	removeEventListener(SessionLifecycleListener listener)
S	setActivationManager(ActivationManager activationManager)
S	setExecutionPredicate(BooleanSupplier criteria)	Session call's the supplier's BooleanSupplier.getAsBoolean() method prior to each activation cycle.

Methods inherited from interface org.evrete.api.Environment

get, get, getPropertyNames

Methods inherited from interface org.evrete.api.EvaluationListeners

addListener, removeListener

Methods inherited from interface org.evrete.api.EvaluatorsContext

addEvaluator, addEvaluator, getEvaluator, replaceEvaluator, replaceEvaluator

Methods inherited from interface org.evrete.api.FluentEnvironment

set

Methods inherited from interface org.evrete.api.FluentImports

addImport, addImport, getImports, getJavaImports

Methods inherited from interface org.evrete.api.RuleSet

getRule, getRule, getRules, resolveFieldReferences, ruleExists, setRuleBuilderExceptionHandler

Methods inherited from interface org.evrete.api.RuntimeContext

builder, compile, compile, getActivationManagerFactory, getClassLoader, getConfiguration, getExpressionResolver, getRuleComparator, getService, getSourceCompiler, getTypeResolver, newRule, newRule, setActivationManagerFactory, setActivationManagerFactory, setActivationMode, setClassLoader, setRuleComparator, wrapTypeResolver

Method Detail

insert

default FactHandle insert(Object fact)

Inserts a fact in working memory and returns a serializable fact handle.

Parameters:

fact - object to insert

Returns:

fact handle assigned to the fact

Throws:

NullPointerException - if argument is null

See Also:

FactHandle

asCollector

<T> Collector<T,?,S> asCollector()

A convenience method that returns an instance of Collector for inserting streams of facts.

Returns:

collector

setExecutionPredicate

S setExecutionPredicate(BooleanSupplier criteria)

Session call's the supplier's BooleanSupplier.getAsBoolean() method prior to each activation cycle. If the provided value is false then the cycle gets interrupted and session exits its fire(...) method.

Along with the ActivationManager, this method can be used to debug rules, to avoid infinite activation loops, or to prevent excessive consumption of computer resources.

Parameters:

criteria - - boolean value supplier

Returns:

this session

insert0

FactHandle insert0(Object fact,
                   boolean resolveCollections)

Inserts a fact in working memory and returns a serializable fact handle. When resolveCollections is set to true, and the fact is an Iterable or an Array, the engine will instead insert its components and return a null FactHandle.

Together with the insert0(String, Object, boolean) method, this operation constitutes the core insert operations that are actually implemented by the engine. The other insert methods are just convenience wrappers of the two.

Parameters:

fact - object to insert

resolveCollections - collection/array inspection flag

Returns:

fact handle assigned to the fact, or null if multiple facts were inserted

Throws:

NullPointerException - if argument is null

See Also:

FactHandle

insert0

FactHandle insert0(String type,
                   Object fact,
                   boolean resolveCollections)

Inserts a fact and explicitly specifies its Type name. When resolveCollections is set to true, and the fact is an Iterable or an Array, the engine will instead insert its components, and return a null FactHandle.

Together with the insert0(Object, boolean) method, this operation constitutes the core insert operations that are actually implemented by the engine. The other insert methods are just convenience wrappers of the two.

Parameters:

fact - object to insert

resolveCollections - collection/array inspection flag

type - type name

Returns:

fact handle assigned to the fact, or null if multiple facts were inserted

Throws:

NullPointerException - if argument is null

See Also:

FactHandle

insertAs

default FactHandle insertAs(String type,
                            Object fact)

Inserts a fact and explicitly specifies its Type name.

Parameters:

type - type name

fact - fact to insert

Returns:

fact handle assigned to the fact

Throws:

NullPointerException - if argument is null

insertAs

default S insertAs(String type,
                   Iterable<?> objects)

Inserts a collection of facts, marking them as being of a specific type.

Parameters:

type - type name

objects - objects to insert

See Also:

insertAs(String, Object)

insertAs

default S insertAs(String type,
                   Object... objects)

Inserts a collection of facts, marking them as being of a specific type.

Parameters:

type - type name

objects - objects to insert

See Also:

insertAs(String, Object)

insert

default S insert(Iterable<?> objects)

Inserts a collection of facts.

Parameters:

objects - objects to insert

See Also:

insert(Object)

insert

default S insert(Object... objects)

Inserts an array of facts.

Parameters:

objects - objects to insert

See Also:

insert(Object)

getActivationManager

ActivationManager getActivationManager()

setActivationManager

S setActivationManager(ActivationManager activationManager)

addEventListener

S addEventListener(SessionLifecycleListener listener)

removeEventListener

S removeEventListener(SessionLifecycleListener listener)

getParentContext

Knowledge getParentContext()

fire

Object fire()