roledao.java

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package org.imm.dao.hibernate;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.imm.dao.IRoleDAO;
import org.imm.model.Role;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

public class RoleDAO extends HibernateDaoSupport implements IRoleDAO {

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

	//property constants
	public static final String ROLENAME = "rolename";
	public static final String DESCRIPTION = "description";

	protected void initDao() {
		//do nothing
	}
    
    /* (non-Javadoc)
	 * @see org.imm.dao.hibernate.IRoleDAO#save(org.imm.model.Role)
	 */
    public void save(Role transientInstance) {
        log.debug("saving Role instance");
        try {
            getHibernateTemplate().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }
    
	/* (non-Javadoc)
	 * @see org.imm.dao.hibernate.IRoleDAO#delete(org.imm.model.Role)
	 */
	public void delete(Role persistentInstance) {
        log.debug("deleting Role instance");
        try {
            getHibernateTemplate().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }
    
    /* (non-Javadoc)
	 * @see org.imm.dao.hibernate.IRoleDAO#findById(java.lang.Integer)
	 */
    public Role findById( java.lang.Integer id) {
        log.debug("getting Role instance with id: " + id);
        try {
            Role instance = (Role) getHibernateTemplate()
                    .get("org.imm.model.Role", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }
    
    
    /* (non-Javadoc)
	 * @see org.imm.dao.hibernate.IRoleDAO#findByExample(org.imm.model.Role)
	 */
    public List findByExample(Role instance) {
        log.debug("finding Role instance by example");
        try {
            List results = getHibernateTemplate().findByExample(instance);
            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 Role instance with property: " + propertyName
            + ", value: " + value);
      try {
         String queryString = "from Role as model where model." 
         						+ propertyName + "= ?";
		 return getHibernateTemplate().find(queryString, value);
      } catch (RuntimeException re) {
         log.error("find by property name failed", re);
         throw re;
      }
	}

	public List findByRolename(Object rolename) {
		return findByProperty(ROLENAME, rolename);
	}
	
	public List findByDescription(Object description) {
		return findByProperty(DESCRIPTION, description);
	}
	
    public Role merge(Role detachedInstance) {
        log.debug("merging Role instance");
        try {
            Role result = (Role) getHibernateTemplate()
                    .merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

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

	public static IRoleDAO getFromApplicationContext(ApplicationContext ctx) {
    	return (IRoleDAO) ctx.getBean("RoleDAO");
	}
}