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GraphHopper is a fast and memory efficient Java road routing engine working seamlessly with OpenStreetMap data.

There is a newer version: 10.0

/*
 *  Licensed to GraphHopper GmbH under one or more contributor
 *  license agreements. See the NOTICE file distributed with this work for
 *  additional information regarding copyright ownership.
 *
 *  GraphHopper GmbH licenses this file to you under the Apache License,
 *  Version 2.0 (the "License"); you may not use this file except in
 *  compliance with the License. You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.graphhopper.coll;

import com.carrotsearch.hppc.HashOrderMixing;
import com.carrotsearch.hppc.HashOrderMixingStrategy;

/**
 * We often do not mix maps but really need to avoid randomness or that threads can influence each
 * other and so we do not use the default HashOrderMixing employed in HPPC (which does this in a thread-safe manner).
 *
 * @author Peter Karich
 */
public class GHIntObjectHashMap extends com.carrotsearch.hppc.IntObjectHashMap {
    static final HashOrderMixingStrategy DETERMINISTIC = HashOrderMixing.constant(123321123321123312L);

    public GHIntObjectHashMap() {
        super(10, 0.75, DETERMINISTIC);
    }

    public GHIntObjectHashMap(int capacity) {
        super(capacity, 0.75, DETERMINISTIC);
    }

    public GHIntObjectHashMap(int capacity, double loadFactor) {
        super(capacity, loadFactor, DETERMINISTIC);
    }

    public GHIntObjectHashMap(int capacity, double loadFactor, HashOrderMixingStrategy hashOrderMixer) {
        super(capacity, loadFactor, hashOrderMixer);
    }
}