commendhibernatedao.java

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package com.laoer.bbscs.dao.hibernate;

import org.springframework.orm.hibernate.support.HibernateDaoSupport;
import com.laoer.bbscs.dao.ICommendDAO;
import com.laoer.bbscs.bean.Commend;
import com.laoer.bbscs.sys.PageList;
import com.laoer.bbscs.sys.Pages;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.dao.*;
import java.util.*;
import net.sf.hibernate.*;
import net.sf.hibernate.type.*;
import org.springframework.orm.hibernate.HibernateCallback;
import com.laoer.bbscs.sys.Constant;
import com.laoer.bbscs.sys.SysUtil;
import java.sql.SQLException;

/**
 * <p>Title: TianYi BBS</p>
 * <p>Description: TianYi BBS System</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: LAOER.COM/TIANYISOFT.NET</p>
 * @author laoer
 * @version 6.0
 */

public class CommendHibernateDAO
    extends HibernateDaoSupport implements ICommendDAO {

  private static final Log logger = LogFactory.getLog(CommendHibernateDAO.class);

  private static final String LOAD_BY_POSTID =
      "from Commend commend where commend.postID = ? and commend.isBull = ?";
  private static final String LOAD_NUM =
      "select count(commend.id) from Commend commend where commend.isBull = ?";
  private static final String LOADS_BY_ISBULL =
      "from Commend commend where commend.isBull = ? order by commend.addTime desc";
  private static final String LOAD_BY_ID =
      "from Commend commend where commend.id = ?";
  private static final String LOAD_IN =
      "from Commend commend where commend.id in (:ids)";

  public CommendHibernateDAO() {
    super();
  }

  /**
   *
   * @param commend Commend
   * @return Commend
   * @todo Implement this com.laoer.bbscs.dao.ICommendDAO method
   */
  public Commend saveCommend(Commend commend) {
    try {
      getHibernateTemplate().saveOrUpdate(commend);
      return commend;
    }
    catch (DataAccessException ex) {
      logger.error(ex);
      return null;
    }
  }

  /**
   *
   * @param postID long
   * @param isBull short
   * @return Commend
   * @todo Implement this com.laoer.bbscs.dao.ICommendDAO method
   */
  public Commend findCommendByPostID(long postID, short isBull) {
    Object[] o = {
        new Long(postID), new Short(isBull)};
    List l = this.getHibernateTemplate().find(LOAD_BY_POSTID, o);
    if (l.size() == 0) {
      return null;
    }
    else {
      return (Commend) l.get(0);
    }
  }

  /**
   *
   * @param isBull short
   * @return int
   * @todo Implement this com.laoer.bbscs.dao.ICommendDAO method
   */
  public int getCommendNum(short isBull) {
    try {
      List l = this.getHibernateTemplate().find(LOAD_NUM, new Short(isBull));
      return ( (Integer) l.get(0)).intValue();
    }
    catch (DataAccessException ex) {
      logger.error("getCommendNum(short isBull):" + ex);
      return 0;
    }
  }

  /**
   *
   * @param isBull short
   * @param pages Pages
   * @return PageList
   * @todo Implement this com.laoer.bbscs.dao.ICommendDAO method
   */
  public List getCommendList(final short isBull, final int firstResult, final int maxResults) {
    return getHibernateTemplate().executeFind(new HibernateCallback() {
      public Object doInHibernate(Session s) throws HibernateException, SQLException {
        Query query = s.createQuery(LOADS_BY_ISBULL);
        query.setShort(0, isBull);
        query.setFirstResult(firstResult);
        query.setMaxResults(maxResults);

        List list = query.list();
        return list;
      }
    });
  }

  /**
   *
   * @param ids List
   * @return List
   */
  public List getCommendInList(final List ids) {
    return getHibernateTemplate().executeFind(new HibernateCallback() {
      public Object doInHibernate(Session s) throws HibernateException, SQLException {
        Query query = s.createQuery(LOAD_IN);
        query.setParameterList("ids", ids);

        List list = query.list();
        return list;
      }
    });
  }

  /**
   *
   * @param id long
   * @todo Implement this com.laoer.bbscs.dao.ICommendDAO method
   */
  public void removeCommend(final long id) {
    getHibernateTemplate().execute(new HibernateCallback() {
      public Object doInHibernate(Session s) throws HibernateException, SQLException {
        s.delete(LOAD_BY_ID, new Long(id), Hibernate.LONG);
        return null;
      }
    });
  }

}