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HermiT is reasoner for ontologies written using the Web Ontology Language (OWL). Given an OWL file, HermiT can determine whether or not the ontology is consistent, identify subsumption relationships between classes, and much more.
This is the maven build of HermiT and is designed for people who wish to use HermiT from within the OWL API. It is now versioned in the main HermiT version repository, although not officially supported by the HermiT developers.
The version number of this package is a composite of the HermiT version and a value representing the OWLAPI release it is compatible with. Note that the group id for the upstream HermiT is com.hermit-reasoner, while this fork is released under net.sourceforge.owlapi.
This fork exists to allow HermiT users to use newer OWLAPI versions than the ones supported by the original HermiT codebase.
This package includes the Jautomata library (http://jautomata.sourceforge.net/), and builds with it directly. This library appears to be no longer under active development, and so a "fork" seems appropriate. No development is intended or anticipated on this code base.
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/* Copyright 2008, 2009, 2010 by the Oxford University Computing Laboratory
This file is part of HermiT.
HermiT is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
HermiT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with HermiT. If not, see m_atomicConceptsSetFactory=new SetFactory<>();
protected final SetFactory m_atomicRolesSetFactory=new SetFactory<>();
protected final Set m_atomicConceptsBuffer=new LinkedHashSet<>();
protected final Set m_atomicRolesBuffer=new LinkedHashSet<>();
protected ExtensionTable.Retrieval m_binaryTableSearch1Bound;
protected ExtensionTable.Retrieval m_ternaryTableSearch12Bound;
@Override
public void initialize(Tableau tableau) {
m_binaryTableSearch1Bound=tableau.getExtensionManager().getBinaryExtensionTable().createRetrieval(new boolean[] { false,true },ExtensionTable.View.TOTAL);
m_ternaryTableSearch12Bound=tableau.getExtensionManager().getTernaryExtensionTable().createRetrieval(new boolean[] { false,true,true },ExtensionTable.View.TOTAL);
}
@Override
public void clear() {
m_atomicConceptsSetFactory.clearNonpermanent();
m_atomicRolesSetFactory.clearNonpermanent();
m_binaryTableSearch1Bound.clear();
m_ternaryTableSearch12Bound.clear();
}
@Override
public boolean isBlockedBy(Node blocker,Node blocked) {
PairWiseBlockingObject blockerObject=(PairWiseBlockingObject)blocker.getBlockingObject();
PairWiseBlockingObject blockedObject=(PairWiseBlockingObject)blocked.getBlockingObject();
return
!blocker.isBlocked() &&
blocker.getNodeType()==NodeType.TREE_NODE &&
blocked.getNodeType()==NodeType.TREE_NODE &&
blockerObject.getAtomicConceptsLabel()==blockedObject.getAtomicConceptsLabel() &&
((PairWiseBlockingObject)blocker.getParent().getBlockingObject()).getAtomicConceptsLabel()==((PairWiseBlockingObject)blocked.getParent().getBlockingObject()).getAtomicConceptsLabel() &&
blockerObject.getFromParentLabel()==blockedObject.getFromParentLabel() &&
blockerObject.getToParentLabel()==blockedObject.getToParentLabel();
}
@Override
public int blockingHashCode(Node node) {
PairWiseBlockingObject nodeObject=(PairWiseBlockingObject)node.getBlockingObject();
return
nodeObject.m_atomicConceptsLabelHashCode+
((PairWiseBlockingObject)node.getParent().getBlockingObject()).m_atomicConceptsLabelHashCode+
nodeObject.m_fromParentLabelHashCode+
nodeObject.m_toParentLabelHashCode;
}
@Override
public boolean canBeBlocker(Node node) {
Node parent=node.getParent();
return node.getNodeType()==NodeType.TREE_NODE && (parent.getNodeType()==NodeType.TREE_NODE || parent.getNodeType()==NodeType.GRAPH_NODE);
}
@Override
public boolean canBeBlocked(Node node) {
Node parent=node.getParent();
return node.getNodeType()==NodeType.TREE_NODE && (parent.getNodeType()==NodeType.TREE_NODE || parent.getNodeType()==NodeType.GRAPH_NODE);
}
@Override
public boolean hasBlockingInfoChanged(Node node) {
return ((PairWiseBlockingObject)node.getBlockingObject()).m_hasChanged;
}
@Override
public void clearBlockingInfoChanged(Node node) {
((PairWiseBlockingObject)node.getBlockingObject()).m_hasChanged=false;
}
@Override
public void nodeInitialized(Node node) {
if (node.getBlockingObject()==null)
node.setBlockingObject(new PairWiseBlockingObject(node));
((PairWiseBlockingObject)node.getBlockingObject()).initialize();
}
@Override
public void nodeDestroyed(Node node) {
((PairWiseBlockingObject)node.getBlockingObject()).destroy();
}
@Override
public Node assertionAdded(Concept concept,Node node,boolean isCore) {
if (concept instanceof AtomicConcept) {
((PairWiseBlockingObject)node.getBlockingObject()).addAtomicConcept((AtomicConcept)concept);
return node;
}
else
return null;
}
@Override
public Node assertionRemoved(Concept concept,Node node,boolean isCore) {
if (concept instanceof AtomicConcept) {
((PairWiseBlockingObject)node.getBlockingObject()).removeAtomicConcept((AtomicConcept)concept);
return node;
}
else
return null;
}
@Override
public Node assertionAdded(DataRange range,Node node,boolean isCore) {
return null;
}
@Override
public Node assertionRemoved(DataRange range,Node node,boolean isCore) {
return null;
}
@Override
public Node assertionAdded(AtomicRole atomicRole,Node nodeFrom,Node nodeTo,boolean isCore) {
if (nodeFrom.isParentOf(nodeTo)) {
((PairWiseBlockingObject)nodeTo.getBlockingObject()).addToFromParentLabel(atomicRole);
return nodeTo;
}
else if (nodeTo.isParentOf(nodeFrom)) {
((PairWiseBlockingObject)nodeFrom.getBlockingObject()).addToToParentLabel(atomicRole);
return nodeFrom;
}
else {
// If the previous two tests fail, then the added assertion represents a relation between
// root nodes or a back-link to the root node. Such assertions are not relevant for blocking;
// hence, neither node should be marked as changed.
return null;
}
}
@Override
public Node assertionRemoved(AtomicRole atomicRole,Node nodeFrom,Node nodeTo,boolean isCore) {
if (nodeFrom.isParentOf(nodeTo)) {
((PairWiseBlockingObject)nodeTo.getBlockingObject()).removeFromFromParentLabel(atomicRole);
return nodeTo;
}
else if (nodeTo.isParentOf(nodeFrom)) {
((PairWiseBlockingObject)nodeFrom.getBlockingObject()).removeFromToParentLabel(atomicRole);
return nodeFrom;
}
else {
// If the previous two tests fail, then the removed assertion represents a relation between
// root nodes or a back-link to the root node. Such assertions are not relevant for blocking;
// hence, neither node should be marked as changed.
return null;
}
}
@Override
public Node nodesMerged(Node mergeFrom,Node mergeInto) {
return null;
}
@Override
public Node nodesUnmerged(Node mergeFrom,Node mergeInto) {
return null;
}
@Override
public BlockingSignature getBlockingSignatureFor(Node node) {
return new PairWiseBlockingSignature(this,node);
}
protected Set fetchAtomicConceptsLabel(Node node) {
m_atomicConceptsBuffer.clear();
m_binaryTableSearch1Bound.getBindingsBuffer()[1]=node;
m_binaryTableSearch1Bound.open();
Object[] tupleBuffer=m_binaryTableSearch1Bound.getTupleBuffer();
while (!m_binaryTableSearch1Bound.afterLast()) {
Object concept=tupleBuffer[0];
if (concept instanceof AtomicConcept)
m_atomicConceptsBuffer.add((AtomicConcept)concept);
m_binaryTableSearch1Bound.next();
}
Set result=m_atomicConceptsSetFactory.getSet(m_atomicConceptsBuffer);
m_atomicConceptsBuffer.clear();
return result;
}
/**
* @param nodeFrom nodeFrom
* @param nodeTo nodeTo
* @return edge labels
*/
public Set fetchEdgeLabel(Node nodeFrom,Node nodeTo) {
m_atomicRolesBuffer.clear();
m_ternaryTableSearch12Bound.getBindingsBuffer()[1]=nodeFrom;
m_ternaryTableSearch12Bound.getBindingsBuffer()[2]=nodeTo;
m_ternaryTableSearch12Bound.open();
Object[] tupleBuffer=m_ternaryTableSearch12Bound.getTupleBuffer();
while (!m_ternaryTableSearch12Bound.afterLast()) {
Object atomicRole=tupleBuffer[0];
if (atomicRole instanceof AtomicRole)
m_atomicRolesBuffer.add((AtomicRole)atomicRole);
m_ternaryTableSearch12Bound.next();
}
Set result=m_atomicRolesSetFactory.getSet(m_atomicRolesBuffer);
m_atomicRolesBuffer.clear();
return result;
}
@Override
public boolean hasChangedSinceValidation(Node node) {
return false;
}
@Override
public void setHasChangedSinceValidation(Node node,boolean hasChanged) {
// do nothing
}
protected final class PairWiseBlockingObject implements Serializable {
private static final long serialVersionUID=-5439737072100509531L;
protected final Node m_node;
protected boolean m_hasChanged;
protected Set m_atomicConceptsLabel;
protected int m_atomicConceptsLabelHashCode;
protected Set m_fromParentLabel;
protected int m_fromParentLabelHashCode;
protected Set m_toParentLabel;
protected int m_toParentLabelHashCode;
public PairWiseBlockingObject(Node node) {
m_node=node;
}
public void initialize() {
m_atomicConceptsLabel=null;
m_atomicConceptsLabelHashCode=0;
m_fromParentLabel=null;
m_fromParentLabelHashCode=0;
m_toParentLabel=null;
m_toParentLabelHashCode=0;
m_hasChanged=true;
}
public void destroy() {
if (m_atomicConceptsLabel!=null) {
m_atomicConceptsSetFactory.removeReference(m_atomicConceptsLabel);
m_atomicConceptsLabel=null;
}
if (m_fromParentLabel!=null) {
m_atomicRolesSetFactory.removeReference(m_fromParentLabel);
m_fromParentLabel=null;
}
if (m_toParentLabel!=null) {
m_atomicRolesSetFactory.removeReference(m_toParentLabel);
m_toParentLabel=null;
}
}
public Set getAtomicConceptsLabel() {
if (m_atomicConceptsLabel==null) {
m_atomicConceptsLabel=PairWiseDirectBlockingChecker.this.fetchAtomicConceptsLabel(m_node);
m_atomicConceptsSetFactory.addReference(m_atomicConceptsLabel);
}
return m_atomicConceptsLabel;
}
public void addAtomicConcept(AtomicConcept atomicConcept) {
if (m_atomicConceptsLabel!=null) {
m_atomicConceptsSetFactory.removeReference(m_atomicConceptsLabel);
m_atomicConceptsLabel=null;
}
m_atomicConceptsLabelHashCode+=atomicConcept.hashCode();
m_hasChanged=true;
}
public void removeAtomicConcept(AtomicConcept atomicConcept) {
if (m_atomicConceptsLabel!=null) {
m_atomicConceptsSetFactory.removeReference(m_atomicConceptsLabel);
m_atomicConceptsLabel=null;
}
m_atomicConceptsLabelHashCode-=atomicConcept.hashCode();
m_hasChanged=true;
}
public Set getFromParentLabel() {
if (m_fromParentLabel==null) {
m_fromParentLabel=fetchEdgeLabel(m_node.getParent(),m_node);
m_atomicRolesSetFactory.addReference(m_fromParentLabel);
}
return m_fromParentLabel;
}
protected void addToFromParentLabel(AtomicRole atomicRole) {
if (m_fromParentLabel!=null) {
m_atomicRolesSetFactory.removeReference(m_fromParentLabel);
m_fromParentLabel=null;
}
m_fromParentLabelHashCode+=atomicRole.hashCode();
m_hasChanged=true;
}
protected void removeFromFromParentLabel(AtomicRole atomicRole) {
if (m_fromParentLabel!=null) {
m_atomicRolesSetFactory.removeReference(m_fromParentLabel);
m_fromParentLabel=null;
}
m_fromParentLabelHashCode-=atomicRole.hashCode();
m_hasChanged=true;
}
public Set getToParentLabel() {
if (m_toParentLabel==null) {
m_toParentLabel=fetchEdgeLabel(m_node,m_node.getParent());
m_atomicRolesSetFactory.addReference(m_toParentLabel);
}
return m_toParentLabel;
}
protected void addToToParentLabel(AtomicRole atomicRole) {
if (m_toParentLabel!=null) {
m_atomicRolesSetFactory.removeReference(m_toParentLabel);
m_toParentLabel=null;
}
m_toParentLabelHashCode+=atomicRole.hashCode();
m_hasChanged=true;
}
protected void removeFromToParentLabel(AtomicRole atomicRole) {
if (m_toParentLabel!=null) {
m_atomicRolesSetFactory.removeReference(m_toParentLabel);
m_toParentLabel=null;
}
m_toParentLabelHashCode-=atomicRole.hashCode();
m_hasChanged=true;
}
}
protected static class PairWiseBlockingSignature extends BlockingSignature implements Serializable {
private static final long serialVersionUID=4697990424058632618L;
protected final Set m_atomicConceptLabel;
protected final Set m_parentAtomicConceptLabel;
protected final Set m_fromParentLabel;
protected final Set m_toParentLabel;
protected final int m_hashCode;
public PairWiseBlockingSignature(PairWiseDirectBlockingChecker checker,Node node) {
PairWiseBlockingObject nodeBlockingObject=(PairWiseBlockingObject)node.getBlockingObject();
m_atomicConceptLabel=nodeBlockingObject.getAtomicConceptsLabel();
m_parentAtomicConceptLabel=((PairWiseBlockingObject)node.getParent().getBlockingObject()).getAtomicConceptsLabel();
m_fromParentLabel=nodeBlockingObject.getFromParentLabel();
m_toParentLabel=nodeBlockingObject.getToParentLabel();
m_hashCode=
m_atomicConceptLabel.hashCode()+
m_parentAtomicConceptLabel.hashCode()+
m_fromParentLabel.hashCode()+
m_toParentLabel.hashCode();
checker.m_atomicConceptsSetFactory.makePermanent(m_atomicConceptLabel);
checker.m_atomicConceptsSetFactory.makePermanent(m_parentAtomicConceptLabel);
checker.m_atomicRolesSetFactory.makePermanent(m_fromParentLabel);
checker.m_atomicRolesSetFactory.makePermanent(m_toParentLabel);
}
@Override
public boolean blocksNode(Node node) {
PairWiseBlockingObject nodeBlockingObject=(PairWiseBlockingObject)node.getBlockingObject();
return
nodeBlockingObject.getAtomicConceptsLabel()==m_atomicConceptLabel &&
((PairWiseBlockingObject)node.getParent().getBlockingObject()).getAtomicConceptsLabel()==m_parentAtomicConceptLabel &&
nodeBlockingObject.getFromParentLabel()==m_fromParentLabel &&
nodeBlockingObject.getToParentLabel()==m_toParentLabel;
}
@Override
public int hashCode() {
return m_hashCode;
}
@Override
public boolean equals(Object that) {
if (this==that)
return true;
if (!(that instanceof PairWiseBlockingSignature))
return false;
PairWiseBlockingSignature thatSignature=(PairWiseBlockingSignature)that;
return
m_atomicConceptLabel==thatSignature.m_atomicConceptLabel &&
m_parentAtomicConceptLabel==thatSignature.m_parentAtomicConceptLabel &&
m_fromParentLabel==thatSignature.m_fromParentLabel &&
m_toParentLabel==thatSignature.m_toParentLabel;
}
}
}