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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.skynet.core.relation;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.logging.Level;
import org.eclipse.osee.framework.core.data.ArtifactToken;
import org.eclipse.osee.framework.core.data.BranchId;
import org.eclipse.osee.framework.core.data.IRelationType;
import org.eclipse.osee.framework.core.enums.DeletionFlag;
import org.eclipse.osee.framework.core.enums.RelationSide;
import org.eclipse.osee.framework.jdk.core.type.CompositeKeyHashMap;
import org.eclipse.osee.framework.logging.OseeLog;
import org.eclipse.osee.framework.skynet.core.artifact.ArtifactKey;
import org.eclipse.osee.framework.skynet.core.internal.Activator;
import org.eclipse.osee.framework.skynet.core.relation.RelationFilterUtil.RelationMatcher;
import org.eclipse.osee.framework.skynet.core.types.IArtifact;
/**
* @author Roberto E. Escobar
*/
public class RelationCache {
private static final ThreadLocal<ArtifactKey> THREAD_SHARED_KEY = new ThreadLocal<ArtifactKey>() {
@Override
protected ArtifactKey initialValue() {
return new ArtifactKey();
}
};
// Indexed by ArtifactKey so that map does not hold strong reference to artifact which allows it to be garbage collected
// the branch is accounted for because artifact key includes the branch uuid
private final CompositeKeyHashMap<ArtifactKey, IRelationType, List<RelationLink>> relationsByType =
new CompositeKeyHashMap<ArtifactKey, IRelationType, List<RelationLink>>(1024, true);
private ArtifactKey getKey(ArtifactToken artifact) {
ArtifactKey key = THREAD_SHARED_KEY.get();
return key.setKey(artifact);
}
private ArtifactKey getKey(long artId, BranchId branchUuid) {
ArtifactKey key = THREAD_SHARED_KEY.get();
return key.setKey(artId, branchUuid);
}
public void deCache(IArtifact artifact) {
ArtifactKey key = getKey(artifact);
Collection<List<RelationLink>> removeValues = relationsByType.removeValues(key);
if (removeValues != null) {
for (List<RelationLink> relations : removeValues) {
for (RelationLink relation : relations) {
removeSingleRelation(artifact, relation);
}
}
}
}
private void removeSingleRelation(IArtifact otherArtifact, RelationLink relation) {
int artifactId;
if (otherArtifact.getArtId() == relation.getBArtifactId()) {
artifactId = relation.getAArtifactId();
} else {
artifactId = relation.getBArtifactId();
}
ArtifactKey key = getKey(artifactId, relation.getBranch());
List<RelationLink> relations = relationsByType.get(key, relation.getRelationType());
if (relations != null) {
relations.remove(relation);
}
}
public void cache(IArtifact artifact, RelationLink newRelation) {
IRelationType relationType = newRelation.getRelationType();
List<RelationLink> selectedRelations = getAllByType(artifact, relationType);
if (selectedRelations == null) {
selectedRelations = new CopyOnWriteArrayList<>();
relationsByType.put(new ArtifactKey(artifact), relationType, selectedRelations);
}
if (selectedRelations.contains(newRelation)) {
OseeLog.logf(Activator.class, Level.SEVERE,
"Duplicate relationByType objects for same relation for Relation [%s] Artifact (%s)[%s]", newRelation,
artifact.getArtId(), artifact.getName());
}
selectedRelations.add(newRelation);
}
public List<RelationLink> getAll(ArtifactToken artifact) {
return getRelations(artifact, DeletionFlag.INCLUDE_DELETED);
}
public List<RelationLink> getAllByType(IArtifact artifact, IRelationType relationType) {
ArtifactKey key = getKey(artifact);
return relationsByType.get(key, relationType);
}
public List<RelationLink> getRelations(ArtifactToken artifact, DeletionFlag deletionFlag) {
ArtifactKey key = getKey(artifact);
List<RelationLink> linksFound = new ArrayList<>();
RelationMatcher matcher = RelationFilterUtil.createMatcher(deletionFlag);
findRelations(linksFound, key, matcher);
return linksFound;
}
private void findRelations(Collection<RelationLink> linksFound, int artId, BranchId branchUuid, IRelationType relationType, RelationMatcher matcher) {
List<RelationLink> sourceLink = relationsByType.get(getKey(artId, branchUuid), relationType);
RelationFilterUtil.filter(sourceLink, linksFound, matcher);
}
private void findRelations(Collection<RelationLink> linksFound, int artId, BranchId branchUuid, RelationMatcher matcher) {
ArtifactKey artifactKey = getKey(artId, branchUuid);
findRelations(linksFound, artifactKey, matcher);
}
private void findRelations(Collection<RelationLink> linksFound, ArtifactKey artifactKey, RelationMatcher matcher) {
List<List<RelationLink>> values = relationsByType.getValues(artifactKey);
if (values != null) {
for (List<RelationLink> linksSource : values) {
RelationFilterUtil.filter(linksSource, linksFound, matcher);
}
}
}
/**
* Find RelationById Related On ArtA or ArtB
*/
public RelationLink getByRelIdOnArtifact(int relLinkId, int aArtifactId, int bArtifactId, BranchId branch) {
RelationMatcher relIdMatcher = RelationFilterUtil.createFindFirstRelationLinkIdMatcher(relLinkId);
List<RelationLink> links = new ArrayList<>();
findRelations(links, aArtifactId, branch, relIdMatcher);
if (links.isEmpty()) {
findRelations(links, bArtifactId, branch, relIdMatcher);
}
return links.isEmpty() ? null : links.iterator().next();
}
public RelationLink getLoadedRelation(IArtifact artifact, int aArtifactId, int bArtifactId, IRelationType relationType, DeletionFlag deletionFlag) {
Set<RelationLink> itemsFound = new HashSet<>();
final int artifactId = artifact.getArtId();
final BranchId branchUuid = artifact.getBranch();
RelationMatcher artIdMatcher = new RelationMatcher() {
@Override
public boolean matches(RelationLink relationLink) {
return relationLink.getAArtifactId() == artifactId || relationLink.getBArtifactId() == artifactId;
}
@Override
public boolean isFindNextAllowed() {
return true;
}
};
RelationMatcher matcher = RelationFilterUtil.createMatcher(deletionFlag, artIdMatcher);
findRelations(itemsFound, artifactId, branchUuid, relationType, matcher);
List<RelationLink> relations = new ArrayList<>();
for (RelationLink relation : itemsFound) {
if (relation.getAArtifactId() == aArtifactId && relation.getBArtifactId() == bArtifactId) {
relations.add(relation);
}
}
int size = relations.size();
if (size > 1) {
OseeLog.logf(Activator.class, Level.SEVERE,
"Artifact A [%s] has [%d] relations of same type [%s] to Artifact B [%s]", artifact.getArtId(),
relations.size(), relationType, bArtifactId);
}
return size != 0 ? relations.iterator().next() : null;
}
public RelationLink getLoadedRelation(IRelationType relationType, int aArtifactId, int bArtifactId, BranchId branch) {
RelationMatcher bArtIdMatcher =
RelationFilterUtil.createFindFirstRelatedArtIdMatcher(bArtifactId, RelationSide.SIDE_B);
List<RelationLink> links = new ArrayList<>();
findRelations(links, aArtifactId, branch, relationType, bArtIdMatcher);
if (links.isEmpty()) {
RelationMatcher aArtIdMatcher =
RelationFilterUtil.createFindFirstRelatedArtIdMatcher(aArtifactId, RelationSide.SIDE_A);
findRelations(links, bArtifactId, branch, relationType, aArtIdMatcher);
}
return links.isEmpty() ? null : links.iterator().next();
}
}
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