HibernateDaoSupport 源码

想看看hibernate托管给spring的 是怎么回事，看后再发现也是ioc注入
只是个人理解 可能有误，还请牛人拍砖

package org.springframework.orm.hibernate3.support;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.dao.DataAccessException;
import org.springframework.dao.DataAccessResourceFailureException;
import org.springframework.dao.support.DaoSupport;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.orm.hibernate3.SessionFactoryUtils;

public abstract class HibernateDaoSupport extends DaoSupport
{
  private HibernateTemplate hibernateTemplate;

  // set注入sessionFactory
  public final void setSessionFactory(SessionFactory paramSessionFactory)
  {
    this.hibernateTemplate = createHibernateTemplate(paramSessionFactory);
  }
  //创建HibernateTemplate 俺们就是用这个对象
  protected HibernateTemplate createHibernateTemplate(SessionFactory paramSessionFactory)
  {
    return new HibernateTemplate(paramSessionFactory);
  }

  public final SessionFactory getSessionFactory()
  {
    return ((this.hibernateTemplate != null) ? this.hibernateTemplate.getSessionFactory() : null);
  }

  public final void setHibernateTemplate(HibernateTemplate paramHibernateTemplate)
  {
    this.hibernateTemplate = paramHibernateTemplate;
  }

  public final HibernateTemplate getHibernateTemplate()
  {
    return this.hibernateTemplate;
  }

  protected final void checkDaoConfig() {
    if (this.hibernateTemplate == null)
      throw new IllegalArgumentException("'sessionFactory' or 'hibernateTemplate' is required");
  }
 //创建session
  protected final Session getSession()
    throws DataAccessResourceFailureException, IllegalStateException
  {
    return getSession(this.hibernateTemplate.isAllowCreate());
  }

  protected final Session getSession(boolean paramBoolean)
    throws DataAccessResourceFailureException, IllegalStateException
  {
    return ((!(paramBoolean)) ? SessionFactoryUtils.getSession(getSessionFactory(), false) : SessionFactoryUtils.getSession(getSessionFactory(), this.hibernateTemplate.getEntityInterceptor(), this.hibernateTemplate.getJdbcExceptionTranslator()));
  }

  protected final DataAccessException convertHibernateAccessException(HibernateException paramHibernateException)
  {
    return this.hibernateTemplate.convertHibernateAccessException(paramHibernateException);
  }

  protected final void releaseSession(Session paramSession)
  {
    SessionFactoryUtils.releaseSession(paramSession, getSessionFactory());
  }