These methods open the bean to receiving three additional callbacks from the container to allow the proper handling of transaction state within the bean.
这些方法使bean可以从容器接收三个额外的回调，以允许正确处理bean中的事务状态。
2
During request handling, the portlet container calls the portlet's.
在处理请求期间，Portlet容器调用Portlet的。
3
This is because the Geronimo container is handling most of them in the background, as a good J2EE container should.