org.eclipse.jdt.internal.core.search.SubTypeSearchJob Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.core.search;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.Optional;
import java.util.Set;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.search.IJavaSearchScope;
import org.eclipse.jdt.core.search.SearchParticipant;
import org.eclipse.jdt.core.search.SearchPattern;
import org.eclipse.jdt.internal.core.JavaModelManager;
import org.eclipse.jdt.internal.core.index.Index;
import org.eclipse.jdt.internal.core.index.MetaIndex;
public class SubTypeSearchJob extends PatternSearchJob {
Set indexes = Collections.synchronizedSet(new LinkedHashSet<>(5));
public SubTypeSearchJob(SearchPattern pattern, SearchParticipant participant, IJavaSearchScope scope, IndexQueryRequestor requestor) {
super(pattern, participant, scope, requestor);
}
public void finished() {
this.indexes.forEach(Index::stopQuery);
}
@Override
public Index[] getIndexes(IProgressMonitor progressMonitor) {
// qualifier index will narrow down indexes each iteration. Therefore alway request from super.
Optional qualifierIndex = JavaModelManager.getIndexManager().getMetaIndex().map(MetaIndex::getIndex);
if(qualifierIndex.isPresent()) {
if(this.indexes.add(qualifierIndex.get())) {
qualifierIndex.get().startQuery();
}
return super.getIndexes(progressMonitor);
}
// fallback if qualifier index is not present.
if (this.indexes.isEmpty()) {
return super.getIndexes(progressMonitor);
}
this.areIndexesReady = true; // use stored indexes until the job's end
return this.indexes.toArray(new Index[0]);
}
@Override
public boolean search(Index index, IndexQueryRequestor queryRequestor, IProgressMonitor progressMonitor) {
if (index == null) return COMPLETE;
if (this.indexes.add(index)) {
index.startQuery();
}
return super.search(index, queryRequestor, progressMonitor);
}
}