org.polymap.wbv.mdb.GmkImporter.java Source code

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Here is the source code for org.polymap.wbv.mdb.GmkImporter.java

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/* 
 * polymap.org
 * Copyright (C) 2015-2016 Polymap GmbH. All rights reserved.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 3.0 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 */
package org.polymap.wbv.mdb;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import org.supercsv.io.CsvListReader;
import org.supercsv.prefs.CsvPreference;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.tuple.Pair;

import org.polymap.wbv.model.Flurstueck;
import org.polymap.wbv.model.Gemarkung;

/**
 * Gemarkungsschlssel aus {@link #FILE_GEMARKUNGEN}.
 *
 * @author <a href="http://www.polymap.de">Falko Brutigam</a>
 */
public class GmkImporter {

    /**
     * Nur beim Import erforderlich. Enthlt die Gemarkungs- und Gemeindeschlssel,
     * im WKV an den Flurstcken sind. Es ermglicht also beim Import die Zuordnung
     * von {@link Flurstueck} zu {@link Gemarkung}.
     */
    public static final String FILE_GEMARKUNGEN = "Gemarkungen-wkv.csv";

    // instance *******************************************

    /** "gemeindeId/gemarkungId" -> gmkschl, siehe {@link #FILE_GEMARKUNGEN} */
    private Map<Pair<String, String>, String> gmkMapping = new TreeMap();

    public GmkImporter() throws IOException {
        CsvPreference prefs = new CsvPreference('"', ',', "\r\n"); // quoteChar, delimiterChar, endOfLineSymbols

        // gmkMapping
        try (FileInputStream in = new FileInputStream(new File(WvkImporter.BASEDIR, FILE_GEMARKUNGEN))) {
            CsvListReader csv = new CsvListReader(new InputStreamReader(in, "UTF-8"), prefs);

            for (List<String> l = csv.read(); l != null; l = csv.read()) {
                final String[] line = l.toArray(new String[l.size()]);
                String id = line[2];
                if (!StringUtils.isNumeric(id)) {
                    System.err.println("Skipping header line: " + Arrays.toString(line));
                    continue;
                }
                String gemeinde = line[2];
                String gemarkung = line[3];
                String gmkschl = line[4];
                Pair key = Pair.of(gemeinde, gemarkung);
                gmkMapping.put(key, gmkschl);
            }
        }
    }

    /**
     * Gemarkungsschlssel aus {@link #FILE_GEMARKUNGEN}.
     *
     * @param gemeindeId Alter Primrschlssel in WKV-Daten.
     * @param gemarkungId Alter Primrschlssel in WKV-Daten.
     * @return Gemarkungsschlssel oder null
     */
    public String gmkschl(String gemeindeId, String gemarkungId) {
        return gmkMapping.get(Pair.of(gemeindeId, gemarkungId));
    }

}