org.projectforge.framework.xstream.converter.JodaDateMidnightConverter.java Source code

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Here is the source code for org.projectforge.framework.xstream.converter.JodaDateMidnightConverter.java

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/////////////////////////////////////////////////////////////////////////////
//
// Project ProjectForge Community Edition
//         www.projectforge.org
//
// Copyright (C) 2001-2014 Kai Reinhard (k.reinhard@micromata.de)
//
// ProjectForge is dual-licensed.
//
// This community edition 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; version 3 of the License.
//
// This community edition 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 http://www.gnu.org/licenses/.
//
/////////////////////////////////////////////////////////////////////////////

package org.projectforge.framework.xstream.converter;

import org.joda.time.DateMidnight;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;

import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;

/**
 * XStream converter that converts Joda DateMidnight.
 * 
 * @author Kai Reinhard
 * 
 */
public class JodaDateMidnightConverter implements Converter {
    protected static final String ISO_FORMAT = "yyyy-MM-dd";

    private static final org.apache.log4j.Logger log = org.apache.log4j.Logger
            .getLogger(JodaDateMidnightConverter.class);

    @Override
    public void marshal(final Object source, final HierarchicalStreamWriter writer,
            final MarshallingContext context) {
        writer.setValue(toString(source));
    }

    String toString(final Object source) {
        final DateMidnight data = (DateMidnight) source;
        final DateTimeFormatter printFormat = DateTimeFormat.forPattern(ISO_FORMAT);
        final String date = printFormat.print(data);
        return date;
    }

    @Override
    public Object unmarshal(final HierarchicalStreamReader reader, final UnmarshallingContext context) {
        final String data = reader.getValue();
        return parse(data);
    }

    Object parse(final String data) {
        try {
            final DateTimeFormatter parseFormat = DateTimeFormat.forPattern(ISO_FORMAT);
            final DateTime date = parseFormat.withZone(DateTimeZone.UTC).parseDateTime(data);
            final DateMidnight dateMidnight = date.toDateMidnight();
            return dateMidnight;
        } catch (final Exception ex) {
            log.error("Can't parse DateMidnight: " + data);
            return new DateMidnight();
        }
    }

    @Override
    @SuppressWarnings("rawtypes")
    public boolean canConvert(final Class clazz) {
        if (DateMidnight.class.isAssignableFrom(clazz) == true) {
            return true;
        }
        return false;
    }
}