Package org.drools.core.rule

Class Pattern

java.lang.Object

org.drools.core.rule.Pattern

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, RuleConditionElement, Acceptor, AcceptsClassObjectType, RuleComponent

Direct Known Subclasses:

XpathBackReference.RelativePattern

public class Pattern
extends Object
implements RuleConditionElement, AcceptsClassObjectType, Externalizable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
Pattern()
Pattern(int patternId, int tupleIndex, int objectIndex, ObjectType objectType, String identifier)
Pattern(int patternId, int tupleIndex, int objectIndex, ObjectType objectType, String identifier, boolean isInternalFact)
Pattern(int patternId, ObjectType objectType)
Pattern(int patternId, ObjectType objectType, String identifier)

Method Summary

Modifier and Type	Method	Description
void	addBehavior(Behavior behavior)
void	addBoundProperty(String boundProperty)
void	addConstraint(int index, Constraint constraint)
void	addConstraint(Constraint constraint)
void	addConstraints(Collection<Constraint> constraints)
Declaration	addDeclaration(String identifier)
void	addDeclaration(Declaration decl)
void	addWatchedProperties(Collection<String> watchedProperties)
void	addWatchedProperty(String watchedProperty)
Pattern	clone()	Returns a clone from itself
boolean	equals(Object object)
List<String>	getAccessibleProperties(InternalKnowledgeBase kBase)
Map<String,AnnotationDefinition>	getAnnotations()
XpathBackReference	getBackRefDeclarations()
List<Behavior>	getBehaviors()
List<Constraint>	getConstraints()
Declaration	getDeclaration()
Map<String,Declaration>	getDeclarations()
Map<String,Declaration>	getInnerDeclarations()	Returns a Map of declarations that are visible inside this conditional element
Collection<String>	getListenedProperties()
BitMask	getNegativeWatchMask(List<String> accessibleProperties)
List<RuleConditionElement>	getNestedElements()	Returs a list of RuleConditionElement's that are nested inside the current element
int	getObjectIndex()
ObjectType	getObjectType()
Map<String,Declaration>	getOuterDeclarations()	Returns a Map of declarations that are visible outside this conditional element.
int	getPatternId()	The index of the Pattern, in the list of patterns.
BitMask	getPositiveWatchMask(List<String> accessibleProperties)
static InternalReadAccessor	getReadAcessor(ObjectType objectType)
Declaration[]	getRequiredDeclarations()
PatternSource	getSource()
int	getTupleIndex()	The index of pattern in the tuple chain.
List<Class<?>>	getXpathBackReferenceClasses()
XpathConstraint	getXpathConstraint()
Declaration	getXPathDeclaration()
int	hashCode()
boolean	hasNegativeConstraint()
boolean	hasXPath()
boolean	isBound()
boolean	isCompatibleWithAccumulateReturnType(Class<?> returnType)
static boolean	isCompatibleWithAccumulateReturnType(Class<?> patternType, Class<?> returnType)
boolean	isCompatibleWithFromReturnType(Class<?> returnType)
static boolean	isCompatibleWithFromReturnType(Class<?> patternType, Class<?> returnType)
boolean	isPassive()
boolean	isPatternScopeDelimiter()	Returns true in case this RuleConditionElement delimits a pattern visibility scope.
void	readExternal(ObjectInput in)
void	removeConstraint(Constraint constraint)
void	resetDeclarations()
Declaration	resolveDeclaration(String identifier)	Resolves the given identifier in the current scope and returns the Declaration object for the declaration.
void	setBackRefDeclarations(XpathBackReference backRefDeclarations)
void	setBehaviors(List<Behavior> behaviors)
void	setClassObjectType(ClassObjectType objectType)
void	setHasNegativeConstraint(boolean negative)
void	setNegativeWatchMask(BitMask negativeWatchMask)
void	setObjectIndex(int objectIndex)
void	setObjectType(ObjectType objectType)
void	setPassive(boolean passive)
void	setPositiveWatchMask(BitMask positiveWatchMask)
void	setSource(PatternSource source)
void	setTupleIndex(int tupleIndex)
String	toString()
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

Pattern

public Pattern()

Pattern

public Pattern(int patternId,
               ObjectType objectType)

Pattern

public Pattern(int patternId,
               ObjectType objectType,
               String identifier)

Pattern

public Pattern(int patternId,
               int tupleIndex,
               int objectIndex,
               ObjectType objectType,
               String identifier)

Pattern

public Pattern(int patternId,
               int tupleIndex,
               int objectIndex,
               ObjectType objectType,
               String identifier,
               boolean isInternalFact)

Method Detail

hasNegativeConstraint

public boolean hasNegativeConstraint()

setHasNegativeConstraint

public void setHasNegativeConstraint(boolean negative)

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

getReadAcessor

public static InternalReadAccessor getReadAcessor(ObjectType objectType)

setClassObjectType

public void setClassObjectType(ClassObjectType objectType)

Specified by:

setClassObjectType in interface AcceptsClassObjectType

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

clone

public Pattern clone()

Description copied from interface: RuleConditionElement

Returns a clone from itself

Specified by:

clone in interface RuleConditionElement

Overrides:

clone in class Object

Returns:

getObjectType

public ObjectType getObjectType()

setObjectType

public void setObjectType(ObjectType objectType)

getSource

public PatternSource getSource()

setSource

public void setSource(PatternSource source)

isPassive

public boolean isPassive()

setPassive

public void setPassive(boolean passive)

getConstraints

public List<Constraint> getConstraints()

addConstraint

public void addConstraint(int index,
                          Constraint constraint)

addConstraints

public void addConstraints(Collection<Constraint> constraints)

addConstraint

public void addConstraint(Constraint constraint)

removeConstraint

public void removeConstraint(Constraint constraint)

hasXPath

public boolean hasXPath()

getXpathConstraint

public XpathConstraint getXpathConstraint()

getXPathDeclaration

public Declaration getXPathDeclaration()

addDeclaration

public Declaration addDeclaration(String identifier)

addDeclaration

public void addDeclaration(Declaration decl)

resetDeclarations

public void resetDeclarations()

isBound

public boolean isBound()

getDeclaration

public Declaration getDeclaration()

getPatternId

public int getPatternId()

The index of the Pattern, in the list of patterns.

Returns:

the patternIndex

getObjectIndex

public int getObjectIndex()

setObjectIndex

public void setObjectIndex(int objectIndex)

getTupleIndex

public int getTupleIndex()

The index of pattern in the tuple chain.

Returns:

the tupleIndex

setTupleIndex

public void setTupleIndex(int tupleIndex)

getDeclarations

public Map<String,Declaration> getDeclarations()

getInnerDeclarations

public Map<String,Declaration> getInnerDeclarations()

Description copied from interface: RuleConditionElement

Returns a Map of declarations that are visible inside this conditional element

Specified by:

getInnerDeclarations in interface RuleConditionElement

Returns:

getOuterDeclarations

public Map<String,Declaration> getOuterDeclarations()

Description copied from interface: RuleConditionElement

Returns a Map of declarations that are visible outside this conditional element.

Specified by:

getOuterDeclarations in interface RuleConditionElement

Returns:

resolveDeclaration

public Declaration resolveDeclaration(String identifier)

Description copied from interface: RuleConditionElement

Resolves the given identifier in the current scope and returns the Declaration object for the declaration. Returns null if identifier can not be resolved.

Specified by:

resolveDeclaration in interface RuleConditionElement

Returns:

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object object)

Overrides:

equals in class Object

getNestedElements

public List<RuleConditionElement> getNestedElements()

Description copied from interface: RuleConditionElement

Returs a list of RuleConditionElement's that are nested inside the current element

Specified by:

getNestedElements in interface RuleConditionElement

Returns:

isPatternScopeDelimiter

public boolean isPatternScopeDelimiter()

Description copied from interface: RuleConditionElement

Returns true in case this RuleConditionElement delimits a pattern visibility scope. For instance, AND CE is not a scope delimiter, while NOT CE is a scope delimiter

Specified by:

isPatternScopeDelimiter in interface RuleConditionElement

Returns:

getBehaviors

public List<Behavior> getBehaviors()

Returns:

the behaviors

setBehaviors

public void setBehaviors(List<Behavior> behaviors)

Parameters:

behaviors - the behaviors to set

addBehavior

public void addBehavior(Behavior behavior)

getListenedProperties

public Collection<String> getListenedProperties()

addBoundProperty

public void addBoundProperty(String boundProperty)

addWatchedProperty

public void addWatchedProperty(String watchedProperty)

addWatchedProperties

public void addWatchedProperties(Collection<String> watchedProperties)

getAccessibleProperties

public List<String> getAccessibleProperties(InternalKnowledgeBase kBase)

getPositiveWatchMask

public BitMask getPositiveWatchMask(List<String> accessibleProperties)

setPositiveWatchMask

public void setPositiveWatchMask(BitMask positiveWatchMask)

getNegativeWatchMask

public BitMask getNegativeWatchMask(List<String> accessibleProperties)

setNegativeWatchMask

public void setNegativeWatchMask(BitMask negativeWatchMask)

getAnnotations

public Map<String,AnnotationDefinition> getAnnotations()

getBackRefDeclarations

public XpathBackReference getBackRefDeclarations()

setBackRefDeclarations

public void setBackRefDeclarations(XpathBackReference backRefDeclarations)

getXpathBackReferenceClasses

public List<Class<?>> getXpathBackReferenceClasses()

isCompatibleWithAccumulateReturnType

public boolean isCompatibleWithAccumulateReturnType(Class<?> returnType)

isCompatibleWithFromReturnType

public boolean isCompatibleWithFromReturnType(Class<?> returnType)

isCompatibleWithAccumulateReturnType

public static boolean isCompatibleWithAccumulateReturnType(Class<?> patternType,
                                                           Class<?> returnType)

isCompatibleWithFromReturnType

public static boolean isCompatibleWithFromReturnType(Class<?> patternType,
                                                     Class<?> returnType)