I would recommend against anything that relies on raw SQL. My experiences have been raw SQL has too little tied in to object models and is difficult to maintain.
--Alex > -----Original Message----- > From: Frank Zhang [mailto:frank.zh...@citrix.com] > Sent: Thursday, June 28, 2012 10:18 AM > To: cloudstack-dev@incubator.apache.org > Subject: RE: Hibernate > > Sorry please ignore my former mail > > > > Am looking at replace Hibernate with Spring Framework > > > simpleJDBCTemplate. > Does this mean ripping out Hibernate? Then we don't have dependency on > Hibernate anymore. > I am afraid that AWS API will refactor a bit, as we are jumping from ORM to > raw JDBC. > > > > -----Original Message----- > > From: Frank Zhang [mailto:frank.zh...@citrix.com] > > Sent: Thursday, June 28, 2012 10:11 AM > > To: cloudstack-dev@incubator.apache.org > > Subject: RE: Hibernate > > > > Spring is able to downgrade dependency of hibernate from compile to > > runtime, however, I am surprise at failing to yum search "hibernate" > > on my FC15. > > Then I did a quick google "hibernate centos rpm" and got nothing. > > I suggest before digging into Spring, make sure hibernate is > > distributed with popular Linux distribution, otherwise Spring won't help. > > > > > -----Original Message----- > > > From: Rajesh Battala [mailto:rajesh.batt...@citrix.com] > > > Sent: Wednesday, June 27, 2012 10:44 PM > > > To: cloudstack-dev@incubator.apache.org > > > Subject: RE: Hibernate > > > > > > Hi, > > > > > > I had started working on this issue. As Hibernate is LGPL we cannot > > > use this in our Apache repo. > > > I had discussed with Chiradeep and Kelven. > > > > > > Am looking at replace Hibernate with Spring Framework > > > simpleJDBCTemplate. > > > > > > The Spring Framework is released under version 2.0 of the Apache > > > License http://www.springsource.org/spring-framework > > > > > > Thanks > > > Rajesh Battala > > > > > > > > > > -----Original Message----- > > > > From: Chiradeep Vittal [mailto:chiradeep.vit...@citrix.com] > > > > Sent: Thursday, June 28, 2012 10:45 AM > > > > To: cloudstack-dev@incubator.apache.org > > > > Cc: cloudstack-dev@incubator.apache.org > > > > Subject: Re: Hibernate > > > > > > > > The ORM in the AWS module is 90% used by S3. > > > > The dependency is mostly abstracted by a DAO layer; there is > > > > another dependency on transactions. I believe Rajesh B is already > > > > working on this aspect and there is a bug open on it. > > > > > > > > -- > > > > Chiradeep > > > > > > > > On Jun 27, 2012, at 21:52, "David Nalley" <da...@gnsa.us> wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Jun 28, 2012, at 12:45 AM, Sheng Liang > > > > > <sheng.li...@citrix.com> > > > > wrote: > > > > > > > > > >>> In short, I see three options (please comment if you see more) 1. > > > > >>> Rip out > > > > hibernate and replace with some other ORM 2. Make the AWS API bits > > > > an optional non-default part of the build. > > > > >> 3. Declare that hibernate is a system requirement for > > > > >> CloudStack > > > > >> > > > > >> I prefer option #1. It is the cleanest. I don't think it will > > > > >> be very difficult to > > > > rip out Hibernate. > > > > >> > > > > >> Sheng > > > > > > > > > > > > > > > > > > > > That is my personal inclination as well, though I am somewhat > > > > > reticent to > > > > say so, since I am not doing any of the work to rip and replace. > > > > At the same time choice of ORM is a big issue. I know, for > > > > instance that Alex was looking into finding another ORM for the rest of > CloudStack. > > > > When I initially looked at the Hibernate issue, Prachi told me she > > > > thought it was about 2 weeks worth of work. > > > > > > > > > > > > > > > --David
