org.drools.core.util
Class HierarchyEncoderImpl<T>

java.lang.Object
  org.drools.core.util.CodedHierarchyImpl<T>
      org.drools.core.util.HierarchyEncoderImpl<T>

Type Parameters:

T -

All Implemented Interfaces:

Externalizable, Serializable, CodedHierarchy<T>, HierarchyEncoder<T>

public class HierarchyEncoderImpl<T>
extends CodedHierarchyImpl<T>
implements HierarchyEncoder<T>, Externalizable

Encodes a hierachy using bit masks, according to the algorithm described in M.F. van Bommel, P. Wang, Encoding Multiple Inheritance Hierarchies for Lattice Operations Data & Knowledge Enfineering 50 (2004) 175-194

See Also:

Serialized Form

Nested Class Summary

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

CodedHierarchyImpl.HierCodeComparator, CodedHierarchyImpl.HierNode<T>

Field Summary

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

fixedRoot, line

Constructor Summary

HierarchyEncoderImpl()

Method Summary

protected void	add(CodedHierarchyImpl.HierNode<T> node)
protected Set<CodedHierarchyImpl.HierNode<T>>	ceil(Set<CodedHierarchyImpl.HierNode<T>> s)
void	clear()
protected void	encode(CodedHierarchyImpl.HierNode<T> node)
BitSet	encode(T member, Collection<T> parents)
protected Set<CodedHierarchyImpl.HierNode<T>>	floor(Set<CodedHierarchyImpl.HierNode<T>> s)
protected int	freeBit(CodedHierarchyImpl.HierNode<T> x)
protected int	freeBit(CodedHierarchyImpl.HierNode<T> x, CodedHierarchyImpl.HierNode<T> z)
protected Set<CodedHierarchyImpl.HierNode<T>>	gcs(Set<CodedHierarchyImpl.HierNode<T>> set)
BitSet	getBottom()
protected boolean	incomparable(CodedHierarchyImpl.HierNode<T> c1, CodedHierarchyImpl.HierNode<T> c2)
protected void	inheritMerged(CodedHierarchyImpl.HierNode<T> x)
protected void	modify(CodedHierarchyImpl.HierNode<T> x, CodedHierarchyImpl.HierNode<T> y)
protected void	propagate(CodedHierarchyImpl.HierNode<T> y, int bit)
void	readExternal(ObjectInput objectInput)
protected void	resolveConflicts(CodedHierarchyImpl.HierNode<T> x)
protected void	updateMask(CodedHierarchyImpl.HierNode<T> node, BitSet mask)
void	writeExternal(ObjectOutput objectOutput)

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

addMember, ancestorNodes, ancestors, ancestors, ancestorValues, children, children, childrenValues, contains, descendantNodes, descendants, descendants, descendantValues, getCode, getMember, getNode, getNodeByKey, getNodes, getSortedMap, getSortedMembers, hasKey, immediateChildren, immediateParents, joinCode, jointMembersCode, lowerBorder, lowerDescendants, meetCode, metMembersCode, parents, parents, parentValues, remove, removeMember, removeMember, size, stringToBitSet, supersetOrEqualset, toBinaryString, toBinaryString, toString, upperAncestors, upperBorder

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.drools.core.util.CodedHierarchy

addMember, ancestors, ancestors, children, children, descendants, descendants, getCode, getMember, getSortedMap, getSortedMembers, hasKey, immediateChildren, immediateParents, joinCode, jointMembersCode, lowerBorder, lowerDescendants, meetCode, metMembersCode, parents, parents, removeMember, removeMember, size, upperAncestors, upperBorder

Constructor Detail

HierarchyEncoderImpl

public HierarchyEncoderImpl()

Method Detail

getBottom

public BitSet getBottom()

Specified by:

getBottom in interface HierarchyEncoder<T>

writeExternal

public void writeExternal(ObjectOutput objectOutput)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class CodedHierarchyImpl<T>

Throws:

IOException

readExternal

public void readExternal(ObjectInput objectInput)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class CodedHierarchyImpl<T>

Throws:

IOException

ClassNotFoundException

encode

public BitSet encode(T member,
                     Collection<T> parents)

Specified by:

encode in interface HierarchyEncoder<T>

add

protected void add(CodedHierarchyImpl.HierNode<T> node)

Overrides:

add in class CodedHierarchyImpl<T>

clear

public void clear()

Specified by:

clear in interface HierarchyEncoder<T>

Overrides:

clear in class CodedHierarchyImpl<T>

encode

protected void encode(CodedHierarchyImpl.HierNode<T> node)

resolveConflicts

protected void resolveConflicts(CodedHierarchyImpl.HierNode<T> x)

modify

protected void modify(CodedHierarchyImpl.HierNode<T> x,
                      CodedHierarchyImpl.HierNode<T> y)

updateMask

protected void updateMask(CodedHierarchyImpl.HierNode<T> node,
                          BitSet mask)

inheritMerged

protected void inheritMerged(CodedHierarchyImpl.HierNode<T> x)

gcs

protected Set<CodedHierarchyImpl.HierNode<T>> gcs(Set<CodedHierarchyImpl.HierNode<T>> set)

ceil

protected Set<CodedHierarchyImpl.HierNode<T>> ceil(Set<CodedHierarchyImpl.HierNode<T>> s)

floor

protected Set<CodedHierarchyImpl.HierNode<T>> floor(Set<CodedHierarchyImpl.HierNode<T>> s)

propagate

protected void propagate(CodedHierarchyImpl.HierNode<T> y,
                         int bit)

freeBit

protected int freeBit(CodedHierarchyImpl.HierNode<T> x)

freeBit

protected int freeBit(CodedHierarchyImpl.HierNode<T> x,
                      CodedHierarchyImpl.HierNode<T> z)

incomparable

protected boolean incomparable(CodedHierarchyImpl.HierNode<T> c1,
                               CodedHierarchyImpl.HierNode<T> c2)