org.drools.core.definitions.rule.impl

Class RuleImpl

java.lang.Object

org.drools.core.definitions.rule.impl.RuleImpl

All Implemented Interfaces:

Externalizable, Serializable, Dialectable, Wireable, org.kie.api.definition.KieDefinition, org.kie.api.definition.rule.Query, org.kie.api.definition.rule.Rule, org.kie.internal.definition.rule.InternalRule

Direct Known Subclasses:

QueryImpl

public class RuleImpl
extends Object
implements Externalizable, Wireable, Dialectable, org.kie.internal.definition.rule.InternalRule, org.kie.api.definition.rule.Query

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RuleImpl.SafeEnabled
static class	RuleImpl.SafeSalience

Nested classes/interfaces inherited from interface org.drools.core.spi.Wireable

Wireable.Immutable

Nested classes/interfaces inherited from interface org.kie.api.definition.KieDefinition

org.kie.api.definition.KieDefinition.KnowledgeType

Field Summary

Fields

Modifier and Type	Field and Description
protected String	activationListener
static String	DEFAULT_CONSEQUENCE_NAME

Constructor Summary

Constructors

Constructor and Description
RuleImpl()
RuleImpl(String name) Construct a Rule with the given name for the specified pkg parent

Method Summary

Modifier and Type	Method and Description
void	addChild(RuleImpl child)
void	addMetaAttribute(String key, Object value)
void	addNamedConsequence(String name, Consequence consequence)
void	addPattern(RuleConditionElement element) Add a pattern to the rule.
void	addUsedQuery(QueryImpl query)
protected List<QueryImpl>	collectDependingQueries(LinkedList<QueryImpl> accumulator)
boolean	equals(Object obj)
String	getActivationGroup()
String	getActivationListener()
String	getAgendaGroup()
boolean	getAutoFocus()
String[]	getCalendars()
List<RuleImpl>	getChildren()
Consequence	getConsequence() Retrieve the Consequence associated with this Rule.
ConsequenceMetaData	getConsequenceMetaData()
Calendar	getDateEffective()
Calendar	getDateExpires()
Declaration	getDeclaration(String identifier) Retrieve a parameter Declaration by identifier.
Map<String,Declaration>	getDeclarations() Retrieve the set of all root fact object parameter Declarations.
List<QueryImpl>	getDependingQueries() Returns the lists of queries from which this rule (or query) depends on ordered by their relative dependencies, e.g. if R1 -> A -> B -> C (where the letter are queries) it will return [C, B, A]
String	getDialect()
Enabled	getEnabled()
String	getFullyQualifiedName()
String	getId()
org.kie.api.definition.KieDefinition.KnowledgeType	getKnowledgeType()
GroupElement	getLhs() Retrieve the List of Conditions for this rule.
int	getLoadOrder()
Map<String,Object>	getMetaData()
Object	getMetaData(String name)
static String	getMethodBytecode(Class cls, String ruleClassName, String packageName, String methodName, String resource)
String	getName() Retrieve the name of this rule.
Consequence	getNamedConsequence(String consequenceName)
Map<String,Consequence>	getNamedConsequences()
String	getNamespace()
String	getPackage()
String	getPackageName()
RuleImpl	getParent()
String[]	getRequiredDeclarationsForConsequence(String consequenceName)
org.kie.api.io.Resource	getResource()
String	getRuleFlowGroup()
String	getRuleUnitClassName()
Salience	getSalience() Retrieve the Rule salience.
int	getSalienceValue() Retrieve the Rule salience value.
Timer	getTimer() Returns the Timer semantics for a rule.
GroupElement[]	getTransformedLhs(LogicTransformer transformer, Map<String,Class<?>> globals) Uses the LogicTransformer to process the Rule patters - if no ORs are used this will return an array of a single AND element.
boolean	hasChildren()
int	hashCode()
boolean	hasLogicalDependency() This field is updated at runtime, when the first logical assertion is done.
boolean	hasNamedConsequences()
boolean	hasRuleUnit()
boolean	isAllMatches()
boolean	isDataDriven()
boolean	isEager()
boolean	isEffective(Tuple tuple, RuleTerminalNode rtn, WorkingMemory workingMemory) This returns true is the rule is effective.
boolean	isEnabled(Tuple tuple, RuleTerminalNode rtn, WorkingMemory workingMemory)
boolean	isLockOnActive()
boolean	isMainAgendaGroup()
boolean	isNoLoop()
boolean	isQuery()
boolean	isSalienceDynamic() Returns true if the rule uses dynamic salience, false otherwise.
boolean	isSemanticallyValid() This will return if the semantic actions or predicates in the rules are valid.
boolean	isValid() Determine if this rule is internally consistent and valid.
void	readExternal(ObjectInput in)
void	removeChild(RuleImpl child)
void	setActivationGroup(String activationGroup)
void	setActivationListener(String activationListener)
RuleImpl	setAgendaGroup(String agendaGroup)
void	setAllMatches(boolean allMatches)
void	setAutoFocus(boolean autoFocus)
void	setCalendars(String[] calendars)
void	setConsequence(Consequence consequence) Set the Consequence that is associated with the successful match of this rule.
void	setDataDriven(boolean dataDriven)
void	setDateEffective(Calendar effectiveDate) Sets the date from which this rule takes effect (can include time to the millisecond).
void	setDateExpires(Calendar expiresDate) Sets the date after which the rule will no longer apply (can include time to the millisecond).
void	setDialect(String dialect)
void	setEager(boolean eager)
void	setEnabled(Enabled b) A rule is enabled by default.
void	setHasLogicalDependency(boolean hasLogicalDependency)
void	setLhs(GroupElement lhsRoot)
void	setLoadOrder(int loadOrder)
void	setLockOnActive(boolean lockOnActive)
void	setNoLoop(boolean noLoop)
RuleImpl	setPackage(String pkg)
void	setParent(RuleImpl parent)
void	setRequiredDeclarationsForConsequence(String consequenceName, String[] requiredDeclarations)
void	setResource(org.kie.api.io.Resource resource)
void	setRuleFlowGroup(String ruleFlowGroup)
void	setRuleUnitClass(Class<? extends org.kie.api.runtime.rule.RuleUnit> ruleUnit)
void	setRuleUnitClassName(String ruleUnitClassName)
void	setSalience(Salience salience) Set the Rule salience.
void	setSemanticallyValid(boolean valid)
void	setTimer(Timer timer) Sets the timer semantics for a rule.
String	toRuleNameAndPathString()
String	toString()
void	wire(Object object)
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

DEFAULT_CONSEQUENCE_NAME

public static final String DEFAULT_CONSEQUENCE_NAME

See Also:

Constant Field Values

activationListener

protected String activationListener

Constructor Detail

RuleImpl

public RuleImpl()

RuleImpl

public RuleImpl(String name)

Construct a Rule with the given name for the specified pkg parent

Parameters:

name - The name of this rule.

Method Detail

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

addUsedQuery

public void addUsedQuery(QueryImpl query)

getDependingQueries

public List<QueryImpl> getDependingQueries()

Returns the lists of queries from which this rule (or query) depends on ordered by their relative dependencies, e.g. if R1 -> A -> B -> C (where the letter are queries) it will return [C, B, A]

collectDependingQueries

protected List<QueryImpl> collectDependingQueries(LinkedList<QueryImpl> accumulator)

getResource

public org.kie.api.io.Resource getResource()

Specified by:

getResource in interface org.kie.internal.definition.rule.InternalRule

setResource

public void setResource(org.kie.api.io.Resource resource)

getDialect

public String getDialect()

Specified by:

getDialect in interface Dialectable

Specified by:

getDialect in interface org.kie.internal.definition.rule.InternalRule

setDialect

public void setDialect(String dialect)

getTimer

public Timer getTimer()

Returns the Timer semantics for a rule. Timer based rules are not added directly to the Agenda instead they are scheduled for Agenda addition, based on the timer.

setTimer

public void setTimer(Timer timer)

Sets the timer semantics for a rule. Timer based rules are not added directly to the Agenda instead they are scheduled for Agenda addition, based on the timer.

isValid

public boolean isValid()

Determine if this rule is internally consistent and valid. This will include checks to make sure the rules semantic components (actions and predicates) are valid. No exception is thrown.

A Rule must include at least one parameter declaration and one condition.

Specified by:

isValid in interface org.kie.internal.definition.rule.InternalRule

Returns:

true if this rule is valid, else false.

getPackage

public String getPackage()

setPackage

public RuleImpl setPackage(String pkg)

getPackageName

public String getPackageName()

Specified by:

getPackageName in interface org.kie.api.definition.rule.Query

Specified by:

getPackageName in interface org.kie.api.definition.rule.Rule

getName

public String getName()

Retrieve the name of this rule.

Specified by:

getName in interface org.kie.api.definition.rule.Query

Specified by:

getName in interface org.kie.api.definition.rule.Rule

Returns:

The name of this rule.

getFullyQualifiedName

public String getFullyQualifiedName()

Specified by:

getFullyQualifiedName in interface org.kie.internal.definition.rule.InternalRule

getSalience

public Salience getSalience()

Retrieve the Rule salience.

Returns:

The salience.

getSalienceValue

public int getSalienceValue()

Retrieve the Rule salience value.

Specified by:

getSalienceValue in interface org.kie.internal.definition.rule.InternalRule

Returns:

The salience value.

isSalienceDynamic

public boolean isSalienceDynamic()

Returns true if the rule uses dynamic salience, false otherwise.

Specified by:

isSalienceDynamic in interface org.kie.internal.definition.rule.InternalRule

Returns:

true if the rule uses dynamic salience, else false.

setSalience

public void setSalience(Salience salience)

Set the Rule salience.

Parameters:

salience - The salience.

getAgendaGroup

public String getAgendaGroup()

Specified by:

getAgendaGroup in interface org.kie.internal.definition.rule.InternalRule

setAgendaGroup

public RuleImpl setAgendaGroup(String agendaGroup)

isMainAgendaGroup

public boolean isMainAgendaGroup()

Specified by:

isMainAgendaGroup in interface org.kie.internal.definition.rule.InternalRule

isNoLoop

public boolean isNoLoop()

Specified by:

isNoLoop in interface org.kie.internal.definition.rule.InternalRule

isEffective

public boolean isEffective(Tuple tuple,
                           RuleTerminalNode rtn,
                           WorkingMemory workingMemory)

This returns true is the rule is effective. If the rule is not effective, it cannot activate. This uses the dateEffective, dateExpires and enabled flag to decide this.

setNoLoop

public void setNoLoop(boolean noLoop)

getAutoFocus

public boolean getAutoFocus()

Specified by:

getAutoFocus in interface org.kie.internal.definition.rule.InternalRule

setAutoFocus

public void setAutoFocus(boolean autoFocus)

getActivationGroup

public String getActivationGroup()

Specified by:

getActivationGroup in interface org.kie.internal.definition.rule.InternalRule

setActivationGroup

public void setActivationGroup(String activationGroup)

getRuleFlowGroup

public String getRuleFlowGroup()

Specified by:

getRuleFlowGroup in interface org.kie.internal.definition.rule.InternalRule

setRuleFlowGroup

public void setRuleFlowGroup(String ruleFlowGroup)

getDeclaration

public Declaration getDeclaration(String identifier)

Retrieve a parameter Declaration by identifier.

Parameters:

identifier - The identifier.

Returns:

The declaration or null if no declaration matches the identifier.

getRequiredDeclarationsForConsequence

public String[] getRequiredDeclarationsForConsequence(String consequenceName)

setRequiredDeclarationsForConsequence

public void setRequiredDeclarationsForConsequence(String consequenceName,
                                                  String[] requiredDeclarations)

hasLogicalDependency

public boolean hasLogicalDependency()

This field is updated at runtime, when the first logical assertion is done. I'm currently not too happy about having this determine at runtime but its currently easier than trying to do this at compile time, although eventually this should be changed

Returns:

setHasLogicalDependency

public void setHasLogicalDependency(boolean hasLogicalDependency)

isLockOnActive

public boolean isLockOnActive()

Specified by:

isLockOnActive in interface org.kie.internal.definition.rule.InternalRule

setLockOnActive

public void setLockOnActive(boolean lockOnActive)

getDeclarations

public Map<String,Declaration> getDeclarations()

Retrieve the set of all root fact object parameter Declarations.

Returns:

The Set of Declarations in order which specify the root fact objects.

addPattern

public void addPattern(RuleConditionElement element)

Add a pattern to the rule. All patterns are searched for bindings which are then added to the rule as declarations

Parameters:

element - The Test to add.

Throws:

InvalidRuleException

getLhs

public GroupElement getLhs()

Retrieve the List of Conditions for this rule.

Returns:

The List of Conditions.

setLhs

public void setLhs(GroupElement lhsRoot)

getTransformedLhs

public GroupElement[] getTransformedLhs(LogicTransformer transformer,
                                        Map<String,Class<?>> globals)
                                 throws InvalidPatternException

Uses the LogicTransformer to process the Rule patters - if no ORs are used this will return an array of a single AND element. If there are Ors it will return an And element for each possible logic branch. The processing uses as a clone of the Rule's patterns, so they are not changed.

Returns:

Throws:

InvalidPatternException

wire

public void wire(Object object)

Specified by:

wire in interface Wireable

setConsequence

public void setConsequence(Consequence consequence)

Set the Consequence that is associated with the successful match of this rule.

Parameters:

consequence - The Consequence to attach to this Rule.

getConsequence

public Consequence getConsequence()

Retrieve the Consequence associated with this Rule.

Returns:

The Consequence.

hasNamedConsequences

public boolean hasNamedConsequences()

getNamedConsequences

public Map<String,Consequence> getNamedConsequences()

getNamedConsequence

public Consequence getNamedConsequence(String consequenceName)

addNamedConsequence

public void addNamedConsequence(String name,
                                Consequence consequence)

getLoadOrder

public int getLoadOrder()

setLoadOrder

public void setLoadOrder(int loadOrder)

isEager

public boolean isEager()

setEager

public void setEager(boolean eager)

isDataDriven

public boolean isDataDriven()

setDataDriven

public void setDataDriven(boolean dataDriven)

isAllMatches

public boolean isAllMatches()

setAllMatches

public void setAllMatches(boolean allMatches)

toString

public String toString()

Overrides:

toString in class Object

toRuleNameAndPathString

public String toRuleNameAndPathString()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

setSemanticallyValid

public void setSemanticallyValid(boolean valid)

isSemanticallyValid

public boolean isSemanticallyValid()

This will return if the semantic actions or predicates in the rules are valid. This is provided so that lists of rules can be provided even if their semantic actions do not "compile" etc.

getCalendars

public String[] getCalendars()

setCalendars

public void setCalendars(String[] calendars)

setDateEffective

public void setDateEffective(Calendar effectiveDate)

Sets the date from which this rule takes effect (can include time to the millisecond).

Parameters:

effectiveDate -

setDateExpires

public void setDateExpires(Calendar expiresDate)

Sets the date after which the rule will no longer apply (can include time to the millisecond).

Parameters:

expiresDate -

getDateEffective

public Calendar getDateEffective()

Specified by:

getDateEffective in interface org.kie.internal.definition.rule.InternalRule

getDateExpires

public Calendar getDateExpires()

Specified by:

getDateExpires in interface org.kie.internal.definition.rule.InternalRule

setEnabled

public void setEnabled(Enabled b)

A rule is enabled by default. This can explicitly disable it in which case it will never activate.

getEnabled

public Enabled getEnabled()

isEnabled

public boolean isEnabled(Tuple tuple,
                         RuleTerminalNode rtn,
                         WorkingMemory workingMemory)

addMetaAttribute

public void addMetaAttribute(String key,
                             Object value)

getActivationListener

public String getActivationListener()

setActivationListener

public void setActivationListener(String activationListener)

getMetaData

public Map<String,Object> getMetaData()

Specified by:

getMetaData in interface org.kie.api.definition.rule.Query

Specified by:

getMetaData in interface org.kie.api.definition.rule.Rule

getMetaData

public Object getMetaData(String name)

setParent

public void setParent(RuleImpl parent)

getParent

public RuleImpl getParent()

addChild

public void addChild(RuleImpl child)

removeChild

public void removeChild(RuleImpl child)

getChildren

public List<RuleImpl> getChildren()

hasChildren

public boolean hasChildren()

isQuery

public boolean isQuery()

getKnowledgeType

public org.kie.api.definition.KieDefinition.KnowledgeType getKnowledgeType()

Specified by:

getKnowledgeType in interface org.kie.api.definition.KieDefinition

getNamespace

public String getNamespace()

Specified by:

getNamespace in interface org.kie.api.definition.KieDefinition

getId

public String getId()

Specified by:

getId in interface org.kie.api.definition.KieDefinition

getConsequenceMetaData

public ConsequenceMetaData getConsequenceMetaData()

getRuleUnitClassName

public String getRuleUnitClassName()

setRuleUnitClass

public void setRuleUnitClass(Class<? extends org.kie.api.runtime.rule.RuleUnit> ruleUnit)

setRuleUnitClassName

public void setRuleUnitClassName(String ruleUnitClassName)

hasRuleUnit

public boolean hasRuleUnit()

getMethodBytecode

public static String getMethodBytecode(Class cls,
                                       String ruleClassName,
                                       String packageName,
                                       String methodName,
                                       String resource)