CollectionCountConverter.java

/*
    This file is part of Cyclos (www.cyclos.org).
    A project of the Social Trade Organisation (www.socialtrade.org).

    Cyclos 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 2 of the License, or
    (at your option) any later version.

    Cyclos 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 Cyclos; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 */
package nl.strohalm.cyclos.utils.conversion;

import java.util.Collection;

/**
 * Converter for returning collection sizes
 * @author luis
 */
public class CollectionCountConverter extends FormatOnlyConverter<Collection<?>> {

    private static final CollectionCountConverter INSTANCE         = new CollectionCountConverter();

    private static final long                     serialVersionUID = 6859497352344622329L;

    public static CollectionCountConverter instance() {
        return INSTANCE;
    }

    @Override
    public String toString(final Collection<?> object) {
        int size = 0;
        if (object != null) {
            size = object.size();
        }
        return String.valueOf(size);
    }

}