src/main/java/eu/etaxonomy/cdm/vaadin/util/converter/GeoLocationConverterValidator.java

   1 /**
   2 * Copyright (C) 2018 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9 package eu.etaxonomy.cdm.vaadin.util.converter;
  10
  11 import java.text.ParseException;
  12 import java.util.Locale;
  13
  14 import org.apache.logging.log4j.LogManager;
  15 import org.apache.logging.log4j.Logger;
  16
  17 import com.vaadin.data.Validator;
  18 import com.vaadin.data.util.converter.Converter;
  19
  20 import eu.etaxonomy.cdm.model.location.Point;
  21 import eu.etaxonomy.cdm.model.location.Point.Sexagesimal;
  22
  23 /**
  24  * Converts longitute and latitute string representations into
  25  * double values. At the same time this class can be used as Validator.
  26  *
  27  * @author a.kohlbecker
  28  * @since Nov 20, 2018
  29  */
  30 public class GeoLocationConverterValidator implements Converter<String, Double>, Validator {
  31
  32     private static final Logger logger = LogManager.getLogger();
  33
  34     public enum Axis {
  35         LONGITUDE, LATITUDE;
  36     }
  37
  38     private static final long serialVersionUID = -1780028474672132160L;
  39
  40     private Axis axis;
  41
  42     public GeoLocationConverterValidator(Axis axis){
  43         this.axis = axis;
  44     }
  45
  46     @Override
  47     public Double convertToModel(String value, Class<? extends Double> targetType, Locale locale)
  48             throws com.vaadin.data.util.converter.Converter.ConversionException {
  49
  50         if(value == null){
  51             return null;
  52         }
  53         try {
  54             if(axis == Axis.LONGITUDE){
  55                 return Point.parseLongitude(value);
  56             } else {
  57                 return Point.parseLatitude(value);
  58             }
  59         } catch (ParseException e) {
  60             logger.error(e);
  61             throw new ConversionException(e);
  62         }
  63     }
  64
  65     @Override
  66     public String convertToPresentation(Double value, Class<? extends String> targetType, Locale locale)
  67             throws com.vaadin.data.util.converter.Converter.ConversionException {
  68
  69         if(value == null){
  70             return null;
  71         }
  72         if(axis == Axis.LONGITUDE){
  73             return Sexagesimal.valueOf(value, false).toString();
  74         } else {
  75             return Sexagesimal.valueOf(value, true).toString();
  76         }
  77     }
  78
  79     @Override
  80     public Class<Double> getModelType() {
  81         return Double.class;
  82     }
  83
  84     @Override
  85     public Class<String> getPresentationType() {
  86         return String.class;
  87     }
  88
  89     @Override
  90     public void validate(Object value) throws InvalidValueException {
  91         if(value != null && value instanceof String && !((String)value).isEmpty()){
  92             try {
  93                 convertToModel((String)value, Double.class, null);
  94             } catch (com.vaadin.data.util.converter.Converter.ConversionException e) {
  95                 throw new InvalidValueException("Invalid " + axis.name().toLowerCase());
  96             }
  97         }
  98     }
  99 }