SortOrder.java

/**
 * Copyright (C) 2008-2010, Squale Project - http://www.squale.org
 *
 * This file is part of Squale.
 *
 * Squale is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 *
 * Squale 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 Lesser General Public License
 * along with Squale.  If not, see <http://www.gnu.org/licenses/>.
 */
/*
 * Cr�� le 2 avr. 04
 *
 * Pour changer le mod�le de ce fichier g�n�r�, allez � :
 * Fen�tre>Pr�f�rences>Java>G�n�ration de code>Code et commentaires
 */
package org.squale.welcom.taglib.table;

import java.io.Serializable;

/**
 * @author M327837 Pour changer le mod�le de ce commentaire de type g�n�r�, allez � :
 *         Fen�tre>Pr�f�rences>Java>G�n�ration de code>Code et commentaires
 */
public class SortOrder
    implements Serializable
{
    /** ID pour la serialization */
    static final long serialVersionUID = 7170418898610183139L;

    /** Constante */
    public static final SortOrder NONE = new SortOrder( "sort-none" );

    /** Constante */
    public static final SortOrder ASC = new SortOrder( "sort-asc" );

    /** Constante */
    public static final SortOrder DESC = new SortOrder( "sort-desc" );

    /** string identifiant le tri */
    private String ssortOrder = "";

    /**
     * Cosntructeur
     * 
     * @param sortOrder tri (NONE, ASC ou DESC)
     */
    private SortOrder( final String sortOrder )
    {
        this.ssortOrder = sortOrder;
    }

    /**
     * @see java.lang.Object#toString()
     */
    public String toString()
    {
        return ssortOrder;
    }

    /**
     * @param sort le tri voulu
     * @return le SortOrder associe
     */
    public static SortOrder getSortOrder( String sort )
    {
        if ( sort == null )
        {
            sort = NONE.toString();
        }

        if ( sort.equals( DESC.toString() ) )
        {
            return DESC;
        }
        else if ( sort.equals( ASC.toString() ) )
        {
            return ASC;
        }
        else
        {
            return NONE;
        }
    }

    /**
     * @param so l'actuel SortOrder
     * @return le SortOrder suivant
     */
    public static SortOrder next( final SortOrder so )
    {
        if ( so == NONE )
        {
            return ASC;
        }

        if ( so == ASC )
        {
            return DESC;
        }

        return NONE;
    }
}