private构造函数有哪些类别？
HibernateSessionFactory。java
package zy。pro。wd。util;
import net。sf。hibernate。HibernateException;
import net。 sf。hibernate。Session;
import net。sf。hibernate。cfg。Configuration;
/**
* Configures and provides access to Hibernate sessions, tied to the
* current thread of execution。 Follows the Thread...全部
HibernateSessionFactory。java
package zy。pro。wd。util;
import net。sf。hibernate。HibernateException;
import net。
sf。hibernate。Session;
import net。sf。hibernate。cfg。Configuration;
/**
* Configures and provides access to Hibernate sessions, tied to the
* current thread of execution。
Follows the Thread Local Session
* pattern, see {@link http://hibernate。org/42。html}。
*/
public class HibernateSessionFactory {
/**
* Location of hibernate。
cfg。xml file。
* NOTICE: Location should be on the classpath as Hibernate uses
* #resourceAsStream style lookup for its configuration file。
That
* is place the config file in a Java package - the default location
* is the default Java package。
* Examples:
* CONFIG_FILE_LOCATION = "/hibernate。conf。xml"。
* CONFIG_FILE_LOCATION = "/com/foo/bar/myhiberstuff。
conf。xml"。
*/
private static String CONFIG_FILE_LOCATION = "/hibernate。cfg。xml";
/** Holds a single instance of Session */
private static final ThreadLocal threadLocal = new ThreadLocal();
/** The single instance of hibernate configuration */
private static final Configuration cfg = new Configuration();
/** The single instance of hibernate SessionFactory */
private static net。
sf。hibernate。SessionFactory sessionFactory;
/**
* Returns the ThreadLocal Session instance。 Lazy initialize
* the SessionFactory if needed。
*
* @return Session
* @throws HibernateException
*/
public static Session currentSession() throws HibernateException {
Session session = (Session) threadLocal。
get();
if (session == null) {
if (sessionFactory == null) {
try {
cfg。configure(CONFIG_FILE_LOCATION);
sessionFactory = cfg。
buildSessionFactory();
}
catch (Exception e) {
System。err。println("%%%% Error Creating SessionFactory %%%%");
e。
printStackTrace();
}
}
session = sessionFactory。openSession();
threadLocal。set(session);
}
return session;
}
/**
* Close the single hibernate session instance。
*
* @throws HibernateException
*/
public static void closeSession() throws HibernateException {
Session session = (Session) threadLocal。
get();
threadLocal。set(null);
if (session != null) {
session。close();
}
}
/**
* Default constructor。
*/。收起
