contentdao.java

icome

package com.icome.dao;

import java.util.Date;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Example;

import com.icome.entity.Content;

/**
 * Data access object (DAO) for domain model class Content.
 * @see com.icome.dao.Content
 * @author MyEclipse - Hibernate Tools
 */
public class ContentDAO extends BaseHibernateDAO {

    private static final Log log = LogFactory.getLog(ContentDAO.class);

	//property constants
	public static final String CATEGORY = "category";
	public static final String RATE = "rate";
	public static final String TITLE = "title";
	public static final String ABSTRACT_ = "abstract_";
	public static final String TEXT = "text";
	public static final String UID = "uid";

    
    public void save(Content transientInstance) {
        log.debug("saving Content instance");
        try {
        	Session s = getSession();
        	Transaction t=s.beginTransaction();
            s.save(transientInstance);
            t.commit();
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }
    
	public void delete(Content persistentInstance) {
        log.debug("deleting Content instance");
        try {
        	Session s = getSession();
        	Transaction t=s.beginTransaction();
            s.delete(persistentInstance);
            t.commit();
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }
    
    public Content findById( java.lang.Integer id) {
        log.debug("getting Content instance with id: " + id);
        try {
            Content instance = (Content) getSession()
                    .get("com.icome.entity.Content", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }
    
    
    public List findByExample(Content instance) {
        log.debug("finding Content instance by example");
        try {
            List results = getSession()
                    .createCriteria("com.icome.entity.Content")
                    .add(Example.create(instance))
            .list();
            log.debug("find by example successful, result size: " + results.size());
            return results;
        } catch (RuntimeException re) {
            log.error("find by example failed", re);
            throw re;
        }
    }    
    
    public List findByProperty(String propertyName, Object value) {
      log.debug("finding Content instance with property: " + propertyName
            + ", value: " + value);
      try {
         String queryString = "from Content as model where model." 
         						+ propertyName + "= ?";
         Query queryObject = getSession().createQuery(queryString);
		 queryObject.setParameter(0, value);
		 return queryObject.list();
      } catch (RuntimeException re) {
         log.error("find by property name failed", re);
         throw re;
      }
	}
    
	public List findByCategory(Object category) {
		return findByProperty(CATEGORY, category);
	}
	
	public List findByRate(Object rate) {
		return findByProperty(RATE, rate);
	}
	
	public List findByTitle(Object title) {
		return findByProperty(TITLE, title);
	}
	
	public List findByAbstract_(Object abstract_) {
		return findByProperty(ABSTRACT_, abstract_);
	}
	
	public List findByText(Object text) {
		return findByProperty(TEXT, text);
	}
	
    public Content merge(Content detachedInstance) {
        log.debug("merging Content instance");
        try {
            Content result = (Content) getSession()
                    .merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

    public void attachDirty(Content instance) {
        log.debug("attaching dirty Content instance");
        try {
            getSession().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }
    
    public void attachClean(Content instance) {
        log.debug("attaching clean Content instance");
        try {
            getSession().lock(instance, LockMode.NONE);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }
}