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
/*******************************************************************************
 * 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 org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.search.*;
import org.eclipse.jdt.internal.compiler.util.SimpleSet;
import org.eclipse.jdt.internal.core.index.Index;

public class SubTypeSearchJob extends PatternSearchJob {

SimpleSet indexes = new SimpleSet(5);

public SubTypeSearchJob(SearchPattern pattern, SearchParticipant participant, IJavaSearchScope scope, IndexQueryRequestor requestor) {
	super(pattern, participant, scope, requestor);
}
public void finished() {
	Object[] values = this.indexes.values;
	for (int i = 0, l = values.length; i < l; i++)
		if (values[i] != null)
			((Index) values[i]).stopQuery();
}
@Override
public Index[] getIndexes(IProgressMonitor progressMonitor) {
	if (this.indexes.elementSize == 0) {
		return super.getIndexes(progressMonitor);
	}
	this.areIndexesReady = true; // use stored indexes until the job's end
	Index[] values = new Index[this.indexes.elementSize];
	this.indexes.asArray(values);
	return values;
}
@Override
public boolean search(Index index, IProgressMonitor progressMonitor) {
	if (index == null) return COMPLETE;
	if (this.indexes.addIfNotIncluded(index) == index)
		index.startQuery();
	return super.search(index, progressMonitor);
}
}