EDIT

/**

* Copyright (C) 2017 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.vaadin.util.converter;

import java.util.Locale;

import org.apache.commons.lang3.StringUtils;

import com.vaadin.data.util.converter.Converter;

import eu.etaxonomy.cdm.common.DOI;

/**

 * Creates a link from the values in the column.

 *

 * @author a.kohlbecker

 * @since Mar 7, 2017

 *

 */

public final class DoiConverter implements Converter<String, DOI> {

    private static final long serialVersionUID = -6695362724769275484L;

    public DoiConverter() {

    }

    @Override

    public Class<DOI> getModelType() {

        return DOI.class;

    }

    @Override

    public Class<String> getPresentationType() {

        return String.class;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public DOI convertToModel(String value, Class<? extends DOI> targetType, Locale locale)

            throws com.vaadin.data.util.converter.Converter.ConversionException {

        if(StringUtils.isNoneEmpty(value)){

            try{

                DOI doi = DOI.fromString(value);

                return doi;

            } catch (Exception e){

                throw new com.vaadin.data.util.converter.Converter.ConversionException(e);

            }

        }

        return null;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public String convertToPresentation(DOI value, Class<? extends String> targetType, Locale locale)

            throws com.vaadin.data.util.converter.Converter.ConversionException {

        if(value != null){

            try{

                return value.toString();

            } catch (Exception e){

                throw new com.vaadin.data.util.converter.Converter.ConversionException(e);

            }

        }

        return null;

    }

}

import eu.etaxonomy.cdm.vaadin.component.TextFieldNFix;

import eu.etaxonomy.cdm.vaadin.util.converter.DoiConverter;

import eu.etaxonomy.cdm.vaadin.util.converter.UriConverter;

        TextFieldNFix doiField = new TextFieldNFix("DOI");

        doiField.setConverter(new DoiConverter());

        addField(doiField, "doi", 2, row);

        TextFieldNFix uriField = new TextFieldNFix("Uri");

        uriField.setConverter(new UriConverter());

        addField(uriField, "uri", 3, row);