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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.routing.util.parsers;

import com.graphhopper.reader.ReaderWay;
import com.graphhopper.routing.ev.DecimalEncodedValue;
import com.graphhopper.routing.ev.EdgeIntAccess;
import com.graphhopper.routing.util.TransportationMode;
import com.graphhopper.routing.util.parsers.helpers.OSMValueExtractor;
import com.graphhopper.storage.IntsRef;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class OSMMaxWeightParser implements TagParser {

    // do not include OSM tag "height" here as it has completely different meaning (height of peak)
    private static final List MAX_WEIGHT_TAGS = Arrays.asList("maxweight", "maxgcweight"/*abandoned*/, "maxweightrating:hgv");
    private static final List HGV_RESTRICTIONS = OSMRoadAccessParser.toOSMRestrictions(TransportationMode.HGV).stream()
            .map(e -> e + ":conditional").collect(Collectors.toList());
    private final DecimalEncodedValue weightEncoder;

    public OSMMaxWeightParser(DecimalEncodedValue weightEncoder) {
        this.weightEncoder = weightEncoder;
    }

    @Override
    public void handleWayTags(int edgeId, EdgeIntAccess edgeIntAccess, ReaderWay way, IntsRef relationFlags) {
        OSMValueExtractor.extractTons(edgeId, edgeIntAccess, way, weightEncoder, MAX_WEIGHT_TAGS);

        // vehicle:conditional no @ (weight > 7.5)
        for (String restriction : HGV_RESTRICTIONS) {
            String value = way.getTag(restriction, "");
            if (value.startsWith("no") && value.indexOf("@") < 6) { // no,none[ ]@
                double dec = OSMValueExtractor.conditionalWeightToTons(value);
                if (!Double.isNaN(dec)) weightEncoder.setDecimal(false, edgeId, edgeIntAccess, dec);
            }
        }
    }
}