improvedlocationdao.java

hibernate quickly 一书的各章节源代码

package com.manning.hq.ch07;

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

import java.util.List;


/**
 * The Data Access Object for managing the persistent Locations.
 *
 * @author Patrick Peak
 * @author Nick Heudecker
 */
public class ImprovedLocationDao extends AbstractDao {
    Log log = LogFactory.getLog(ImprovedLocationDao.class);

    public ImprovedLocationDao() {
        super();
    }

    /**
     * Insert a new Location into the database.
     * @param location
     */
    public void create(Location location) throws DataAccessLayerException {
        saveOrUpdate(location);
    }


    /**
     * Delete a detached Location from the database.
     * @param location
     */
    public void delete(Location location) throws DataAccessLayerException {
        delete(location);
    }

    /**
     * Find an Location by its primary key.
     * @param id
     * @return
     */
    public Location find(Long id) throws DataAccessLayerException {
        return (Location) find(Location.class, id);
    }

    /**
     * Updates the state of a detached location.
     *
     * @param location
     */
    public void update(Location location) throws DataAccessLayerException {
        saveOrUpdate(location);
    }

    /**
     * Finds all Locations in the database.
     * @return
     */
    public List findAll() throws DataAccessLayerException{
        return findAll(Location.class);
    }

}