ControllerHelper.java

package de.rwth.idsg.steve.utils;

import com.neovisionaries.i18n.CountryCode;
import de.rwth.idsg.steve.web.dto.Address;
import jooq.steve.db.tables.records.AddressRecord;

import java.util.Arrays;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Sevket Goekay <goekay@dbis.rwth-aachen.de>
 * @since 25.11.2015
 */
public final class ControllerHelper {
    private ControllerHelper() { }

    public static final String EMPTY_OPTION = "-- Empty --";

    public static final Map<String, String> COUNTRY_DROPDOWN = populateCountryCodes();

    public static Address recordToDto(AddressRecord record) {
        Address address = new Address();
        if (record != null) {
            address.setAddressPk(record.getAddressPk());
            address.setStreet(record.getStreet());
            address.setHouseNumber(record.getHouseNumber());
            address.setZipCode(record.getZipCode());
            address.setCity(record.getCity());
            address.setCountry(CountryCode.getByCode(record.getCountry()));
        }
        return address;
    }

    public static Map<String, String> idTagEnhancer(List<String> idTagList) {
        Map<String, String> map = new HashMap<>(idTagList.size() + 1);
        map.put("", EMPTY_OPTION);

        for (String s : idTagList) {
            map.put(s, s);
        }
        return map;
    }

    private static Map<String, String> populateCountryCodes() {
        CountryCode[] codes = CountryCode.values();
        Arrays.sort(codes, (o1, o2) -> o1.getName().compareTo(o2.getName()));

        Map<String, String> map = new LinkedHashMap<>(codes.length + 1);
        map.put("", EMPTY_OPTION);

        for (CountryCode c : codes) {
            if (shouldInclude(c)) {
                map.put(c.getAlpha2(), c.getName());
            }
        }
        return map;
    }

    /**
     * There are some invalid codes like {@link CountryCode#UNDEFINED} and {@link CountryCode#EU},
     * or some countries are listed twice {@link CountryCode#FI} - {@link CountryCode#SF} and
     * {@link CountryCode#GB} - {@link CountryCode#UK} which are confusing. We filter these out.
     */
    private static boolean shouldInclude(CountryCode c) {
        return c.getAssignment() == CountryCode.Assignment.OFFICIALLY_ASSIGNED;
    }
}