EnumsFactory.java

/**
 *  C-Nery - A home automation web application for C-Bus.
 *  Copyright (C) 2008,2009,2012  Dave Oxley <dave@daveoxley.co.uk>.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package com.daveoxley.seam;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.EnumSet;
import org.jboss.seam.annotations.Name;

/**
 *
 * @author Dave Oxley <dave@daveoxley.co.uk>
 */
@Name("enumsFactory")
public class EnumsFactory implements Serializable {

    public <E extends Enum<E>> Enum<E>[] getEnums(String enumType) throws ClassNotFoundException {
        return getEnums(enumType, null);
    }

    public <E extends Enum<E>> Enum<E>[] getEnums(String enumType, String filter) throws ClassNotFoundException {

        if (enumType == null)
            return null;

        Class<E> clazz = (Class<E>)Class.forName(enumType);
        ArrayList<Enum<E>> enumItems = new ArrayList<Enum<E>>();
        for (Enum<E> e : EnumSet.allOf(clazz)) {
            if (filter == null || e.name().contains(filter))
                enumItems.add(e);
        }

        return enumItems.toArray(new Enum[] {});
    }
}