org.osmtools.ra.context.RelationLoaderService.java Source code

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Here is the source code for org.osmtools.ra.context.RelationLoaderService.java

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/**
 * This file is part of Relation Analyzer for OSM.
 * Copyright (c) 2001 by Adrian Stabiszewski, as@grundid.de
 *
 * Relation Analyzer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Relation Analyzer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Relation Analyzer.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.osmtools.ra.context;

import java.util.List;

import org.osm.schema.Osm;
import org.osmtools.ra.RelationGoneException;
import org.osmtools.ra.converter.OsmSchemaConverterService;
import org.osmtools.ra.data.Relation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Service;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.RestOperations;

@Service
public class RelationLoaderService {

    private static final String GET_RELATION_URL = "http://api.openstreetmap.org/api/0.6/relation/{relation}/full";

    @Autowired
    private RestOperations restOperations;
    @Autowired
    private OsmSchemaConverterService converterService;

    @Cacheable("relation")
    public Relation loadRelation(long relationId) {
        try {
            Osm osmRoot = restOperations.getForObject(GET_RELATION_URL, Osm.class, String.valueOf(relationId));
            List<Relation> list = converterService.convert(osmRoot);
            for (Relation relation : list) {
                if (relationId == relation.getRelationId())
                    return relation;
            }

            throw new RuntimeException("Relation ID " + relationId + " not found");

        } catch (HttpClientErrorException e) {
            if (e.getStatusCode() == HttpStatus.GONE) {
                throw new RelationGoneException();
            } else
                throw e;
        }

    }

    @CacheEvict("relation")
    public Relation reloadRelation(long relationId) {
        return loadRelation(relationId);
    }
}