CanonicalIntArraySet.java

/**
 * Copyright (c) 2011 Michael Kutschke.
 * 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:
 *    Michael Kutschke - initial API and implementation.
 */
package org.eclipse.recommenders.jayes.util.sharing;

import java.util.Arrays;

/**
 * This class uses the Arrays.hashCode and Arrays.equals methods as basis for the equality relation between it's
 * members.
 */
public final class CanonicalIntArraySet extends CanonicalSet<int[]> {

    @Override
    protected Entry<int[]> createEntry(int[] array) {
        return new IntArrayEntry(array);
    }

    @Override
    protected boolean hasProperType(Object o) {
        return o instanceof int[];
    }

    private static class IntArrayEntry extends Entry<int[]> {

        public IntArrayEntry(int[] entry) {
            super(entry);
        }

        @Override
        protected int computeHash(int[] entry2) {
            return Arrays.hashCode(entry2);
        }

        @Override
        protected boolean equals(int[] entry2, int[] entry3) {
            return Arrays.equals(entry2, entry3);
        }
    }
}