fr.ird.observe.client.util.FloatConverter Maven / Gradle / Ivy

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/*
 * #%L
 * ObServe Toolkit :: Common Client
 * %%
 * Copyright (C) 2008 - 2017 IRD, Ultreia.io
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * .
 * #L%
 */
package fr.ird.observe.client.util;

import org.apache.commons.beanutils.ConversionException;
import org.nuiton.converter.NuitonConverter;


import static org.nuiton.i18n.I18n.t;

/**
 * A float converter which is not dependant on user locale to obtain the locale
 * {@code dot} representation.
 * 
 * It can transform {@code 0.2} and also {@code 0, 2}.
 *
 * @author tchemit - [email protected]
 * @since 1.3
 */
public class FloatConverter implements NuitonConverter {

    @Override
    public Object convert(Class aClass, Object value) {
        if (value == null) {
            throw new ConversionException(t("observe.converter.error.noValue", this));
        }
        if (isEnabled(aClass)) {
            Object result;
            if (isEnabled(value.getClass())) {
                result = value;
                return result;
            }
            if (value instanceof String) {
                result = valueOf((String) value);
                return result;
            }
        }
        throw new ConversionException(t("observe.converter.error.no.convertor", value, aClass.getName()));
    }

    protected Float valueOf(String value) {
        try {
            if (value.contains(",")) {
                value = value.replaceAll(",", ".");
            }
            Float result;
            result = Float.valueOf(value);
            return result;
        } catch (NumberFormatException e) {
            throw new ConversionException(t("observe.converter.error.float.format", value, this, e.getMessage()));
        }
    }


    protected boolean isEnabled(Class aClass) {
        return Float.class.equals(aClass);
    }

    @Override
    public Class getType() {
        return Float.class;
    }
}