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/*******************************************************************************
* Copyright (c) 2011 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.display.presenter.internal;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.eclipse.osee.framework.core.data.ResultSet;
import org.eclipse.osee.framework.core.data.ResultSetList;
import org.eclipse.osee.orcs.data.ArtifactReadable;
import org.eclipse.osee.orcs.data.AttributeReadable;
import org.eclipse.osee.orcs.search.Match;
import com.google.common.collect.MapMaker;
/**
* @author Roberto E. Escobar
*/
public class ArtifactProviderCache {
private static final ResultSet<Match<ArtifactReadable, AttributeReadable<?>>> EMPTY_SET =
new ResultSetList<Match<ArtifactReadable, AttributeReadable<?>>>();
private final ConcurrentMap<ArtifactReadable, ArtifactReadable> parentCache;
private final Set<ArtifactReadable> artifactsWithNoParent = new HashSet<ArtifactReadable>();
private ResultSet<Match<ArtifactReadable, AttributeReadable<?>>> searchResults;
private SearchParameters searchParameters;
private Future<?> future;
public ArtifactProviderCache() {
this.parentCache = new MapMaker()//
.initialCapacity(500)//
.expiration(30, TimeUnit.MINUTES)//
.makeMap();
clearSearchCache();
}
public void cacheParent(ArtifactReadable art, ArtifactReadable parent) {
if (parent != null) {
parentCache.put(art, parent);
} else {
artifactsWithNoParent.add(art);
}
}
public boolean isParentCached(ArtifactReadable artifact) {
return parentCache.containsKey(artifact) || artifactsWithNoParent.contains(artifact);
}
public ArtifactReadable getParent(ArtifactReadable artifact) {
return parentCache.get(artifact);
}
public void cacheResults(ResultSet<Match<ArtifactReadable, AttributeReadable<?>>> searchResults) {
this.searchResults = searchResults;
}
public void cacheSearch(SearchParameters searchParameters) {
this.searchParameters = searchParameters;
}
public ResultSet<Match<ArtifactReadable, AttributeReadable<?>>> getSearchResults() {
return searchResults;
}
public SearchParameters getSearchParameters() {
return searchParameters;
}
public boolean isSearchCached(SearchParameters params) {
return searchParameters != null && searchParameters.equals(params);
}
public void clearSearchCache() {
cacheSearch(null);
cacheResults(EMPTY_SET);
cacheSearchFuture(null);
}
public void cacheSearchFuture(Future<?> future) {
this.future = future;
}
public Future<?> getSearchFuture() {
return future;
}
public boolean isSearchInProgress() {
return future != null && !future.isDone() && !future.isCancelled();
}
}
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