Package org.drools.core.common

Class EqualityKey

java.lang.Object

org.drools.core.util.LinkedList<DefaultFactHandle>

org.drools.core.common.EqualityKey

All Implemented Interfaces:

Externalizable, Serializable

public abstract class EqualityKey
extends LinkedList<DefaultFactHandle>
implements Externalizable

Upon instantiation the EqualityKey caches the first Object's hashCode this can never change. The EqualityKey has an internal datastructure which references all the handles which are equal. It also records Whether the referenced facts are JUSTIFIED or STATED

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.drools.core.util.LinkedList

LinkedList.JavaUtilIterator<T extends DoubleLinkedEntry<T>>, LinkedList.LinkedListFastIterator, LinkedList.LinkedListIterator<T extends DoubleLinkedEntry<T>>, LinkedList.TMSLinkedListFastIterator<K extends SingleLinkedEntry<K>>

Field Summary

Fields

Modifier and Type	Field	Description
static final int	JUSTIFIED
static final int	STATED

Fields inherited from class org.drools.core.util.LinkedList

fastIterator

Constructor Summary

Constructors

Constructor	Description
EqualityKey()
EqualityKey(InternalFactHandle handle)
EqualityKey(InternalFactHandle handle, int status)

Method Summary

Modifier and Type	Method	Description
void	addFactHandle(InternalFactHandle handle)
boolean	equals(Object object)	Equality for the EqualityKey means two things.
InternalFactHandle	getFactHandle()
abstract InternalFactHandle	getLogicalFactHandle()
int	getStatus()
int	hashCode()	Returns the cached hashCode
void	readExternal(ObjectInput in)
void	removeFactHandle(InternalFactHandle handle)
abstract void	setLogicalFactHandle(InternalFactHandle logicalFactHandle)
void	setStatus(int status)
String	toString()
void	writeExternal(ObjectOutput out)

Methods inherited from class org.drools.core.util.LinkedList

add, addAllToCollection, addFirst, addLast, clear, contains, copyStateInto, fastIterator, get, get, getFirst, getLast, insertAfter, isEmpty, javaUtilIterator, remove, removeAdd, removeFirst, removeLast, size

Methods inherited from class java.lang.Object

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

Field Details

STATED

public static final int STATED

See Also:

• Constant Field Values

JUSTIFIED

public static final int JUSTIFIED

See Also:

• Constant Field Values

Constructor Details

EqualityKey

public EqualityKey()

EqualityKey

public EqualityKey(InternalFactHandle handle)

EqualityKey

public EqualityKey(InternalFactHandle handle,
 int status)

Method Details

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class LinkedList<DefaultFactHandle>

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class LinkedList<DefaultFactHandle>

Throws:

IOException

getLogicalFactHandle

public abstract InternalFactHandle getLogicalFactHandle()

setLogicalFactHandle

public abstract void setLogicalFactHandle(InternalFactHandle logicalFactHandle)

getFactHandle

public InternalFactHandle getFactHandle()

addFactHandle

public void addFactHandle(InternalFactHandle handle)

removeFactHandle

public void removeFactHandle(InternalFactHandle handle)

getStatus

public int getStatus()

Returns:

the status

setStatus

public void setStatus(int status)

Parameters:

status - the status to set

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Returns the cached hashCode

Overrides:

hashCode in class LinkedList<DefaultFactHandle>

See Also:

• Object.hashCode()

equals

public boolean equals(Object object)

Equality for the EqualityKey means two things. It returns true if the object is also an EqualityKey the of the same the same identity as this. It also returns true if the object is equal to the head FactHandle's referenced Object.

Overrides:

equals in class LinkedList<DefaultFactHandle>