source: extensions/jiwigo/trunk/src/main/java/fr/mael/jiwigo/service/CategoryService.java @ 6831

package fr.mael.jiwigo.service;

import java.io.IOException;
import java.util.List;

import fr.mael.jiwigo.dao.CategoryDao;
import fr.mael.jiwigo.om.Category;

/**
   Copyright (c) 2010, Mael
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of jiwigo nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   DISCLAIMED. IN NO EVENT SHALL Mael BE LIABLE FOR ANY
   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   
 * Service des catégories
 * @author mael
 *
 */
public class CategoryService {
    /**
     * Logger
     */
    public static final org.apache.commons.logging.Log LOG = org.apache.commons.logging.LogFactory
            .getLog(CategoryService.class);

    /**
     * singleton
     */
    private static CategoryService instance;

    /**
     * @return le singleton
     */
    public static CategoryService getInstance() {
        if (instance == null) {
            instance = new CategoryService();
        }
        return instance;
    }

    /**
     * Constructeur privé, pour n'avoir accès qu'au singleton
     */
    private CategoryService() {

    }

    /**
     * Listing des categories
     * @param rafraichir utilisation du cache ou non
     * @param recursive
     * @return la liste des catégories
     * @throws IOException 
     */
    public List<Category> lister(boolean recursive) throws IOException {
        return CategoryDao.getInstance().lister(recursive);
    }

    /**
     * Fonction qui permet de construire l'arbre des categorie
     * En association catégories mères/catégories filles
     * @return la liste des catégories
     * @throws IOException 
     */
    public List<Category> construireArbre() throws IOException {
        List<Category> list = CategoryDao.getInstance().lister(true);
        for (Category category : list) {
            for (Category category2 : list) {
                if (category2.getIdCategoriesMeres().size() != 1
                        && category.getIdentifiant().equals(
                                category2.getIdCategoriesMeres().get(category2.getIdCategoriesMeres().size() - 2))) {
                    category.getCategoriesFilles().add(category2);
                    category2.getCategoriesMeres().add(category);
                }

            }
        }

        return list;

    }

    /**
     * Création d'une catégorie
     * @param nom nom de la catégorie
     * @param parent catégorie parent
     * @return true si la catégorie a bien été créée
     */
    public boolean creer(String nom, Integer parent) {
        Category category = new Category();
        category.setParentDirect(parent);
        category.setNom(nom);
        return CategoryDao.getInstance().creer(category);
    }
}