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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.storage;

/**
 * Manages memory mapped DataAccess objects.
 * 
 *
 * @author Peter Karich
 * @see MMapDataAccess
 */
public class MMapDirectory extends GHDirectory {
    // reserve the empty constructor for direct mapped memory
    private MMapDirectory() {
        this("");
        throw new IllegalStateException("reserved for direct mapped memory");
    }

    public MMapDirectory(String _location) {
        super(_location, DAType.MMAP);
    }
}