articledaoimpl.java

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package jaoso.news.dao.hibernate;

import jaoso.framework.dao.BaseDAO;
import jaoso.framework.dao.MyQuery;

import jaoso.framework.exception.DAOException;

import jaoso.framework.util.MyUtils;

import jaoso.news.dao.ArticleDAO;

import jaoso.news.domain.Article;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.Serializable;


/**
 * @author Administrator
 * @version 0.9.1
 * @since 2004-5-29
 * Article DAO, persistent Article.
 */
public class ArticleDAOImpl implements ArticleDAO {

    //~ Static fields/initializers =============================================

    /**  log */
    private static Log log = LogFactory.getLog(ArticleDAOImpl.class);

    //~ Instance fields ========================================================

    /**  baseDAO */
    private BaseDAO baseDAO;

    //~ Constructors ===========================================================

    /**
     * Creates a new ArticleDAOImpl object.
     */
    public ArticleDAOImpl() {
        super();
    }

    //~ Methods ================================================================

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#getArticle(java.io.Serializable)
     */
    public final Article getArticle(final Serializable id) {

        return (Article) baseDAO.loadEntity(Article.class, id);
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#getArticleByName(java.lang.String)
     */
    public final Article getArticleByDesc(final String name) {

        if (MyUtils.isBlank(name)) {

            return null;
        }

        Article[] articles = findArticle("from Article a where a.desc='" + name
                + "' order by a.desc");

        if (MyUtils.isBlank(articles)) {

            return null;
        }

        return articles[0];
    }

    /**
     * @param dao dao
     */
    public final void setBaseDAO(final BaseDAO dao) {

        baseDAO = dao;
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#isExist(java.lang.String)
     */
    public final boolean isExist(final String name) {

        boolean flage = false;

        if (MyUtils.isBlank(name)) {

            return flage;
        }

        try {

            // flage = getArticleByDesc(name) != null;
            flage = ((Integer) baseDAO.findEntity(
                    "select count(*) from Article a where a.artTitle='" + name
                    + "'")[0]).intValue() > 0;
        } catch (DAOException e) {

            log.error("Article isExist error: ", e);
        }

        return flage;
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#isExist(java.lang.String, java.io.Serializable)
     */
    public final boolean isExist(final String name, final Serializable id) {

        boolean flage = false;

        if (MyUtils.isBlank(name) || (id == null)) {

            return flage;
        }

        try {

            /*
                        Article article = getArticleByDesc(name);
                        flage = (article != null) && !article.getId()
                                                         .equals(id);
                                                         */
            flage = ((Integer) baseDAO.findEntity(
                    "select count(*) from Article a where a.artTitle='" + name
                    + "' and a.artId<>'" + id + "'")[0]).intValue() > 0;
        } catch (DAOException e) {

            log.error("Article isExist error: ", e);
        }

        return flage;
    }

    /**
     * (non-Javadoc)
     * @see jaoso.news.dao.ArticleDAO#count(jaoso.framework.dao.MyQuery)
     */
    public final int count(final MyQuery query) {

        return ((Integer) baseDAO.findEntity(query)[0]).intValue();
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#createArticle(jaoso.framework.domain.Article)
     */
    public final void createArticle(final Article article) {

        baseDAO.saveEntity(article);
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#findAllArticle()
     */
    public final Article[] findAllArticle() {

        return (Article[]) findArticle("from Article a order by a.desc");
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#findArticle(java.lang.String)
     */
    public final Article[] findArticle(final String query) {

        MyQuery myquery = new MyQuery();
        myquery.setQueryString(query);

        return findArticle(myquery);
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#findArticle(jaoso.framework.baseDAO.MyQuery)
     */
    public final Article[] findArticle(final MyQuery query) {

        Object[] os = baseDAO.findEntity(query);

        if (MyUtils.isBlank(os)) {

            return null;
        }

        Article[] entitys = new Article[os.length];
        System.arraycopy(os, 0, entitys, 0, os.length);

        return entitys;
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#removeArticle(jaoso.framework.domain.Article)
     */
    public final void removeArticle(final Article article) {

        article.getCatalog()
               .getArticles()
               .remove(article);
        baseDAO.removeEntity(article);
    }

    /**
     * (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#removeArticle(java.io.Serializable)
     */
    public final void removeArticle(final Serializable id) {

        if (id == null) {

            throw new DAOException("id can't be null");
        }

        removeArticle(getArticle(id));
    }

    /**
     * (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#removeArticle(java.io.Serializable[])
     */
    public final void removeArticle(final Serializable[] ids) {

        if (ids == null) {

            throw new DAOException("id can't be null");
        }

        for (int i = 0, n = ids.length; i < n; i++) {

            removeArticle(getArticle(ids[i]));
        }
    }

    /** (non-Javadoc)
     * @see jaoso.framework.baseDAO.ArticleDAO#updateArticle(jaoso.framework.domain.Article)
     */
    public final void updateArticle(final Article article) {

        baseDAO.updateEntity(article);
    }
}