what is the hibernate mailing list address? hibern...@tomcat.apache.org? :]
Thanks Hila 2011/4/3 Mark Eggers <its_toas...@yahoo.com> > ----- Original Message start (edited) ---- > Hey guys, > > I tried to explore a bit the possibility of hibernate in tomcat, but some > things aren't that clear for me. > Before hitting the specific questions, please explain what is hibernate in > Tomcat, when do we want to use it, how do I use it specifically with the > JDBC connection pool (instead of the default DBCP connection pool), and if > misconfiguration of the hibernate can cause disconnections of users on the > application (that uses tomcat). > > Now for 2 specific questions, if I may :] > 1. in this article, its states that hibernate can be used for managing the > JDBC connection pool, but the strings are for c3p0 pool- > http://community.jboss.org/wiki/UsingHibernatewithTomcat > why is that? > > 2. Do I have to use hibernate.properties file, or can I rename it to > x.properties and still use the content of the hibernate settings? > > > ----- Original Message end (edited) ---- > > There's an example on how to configure Hibernate and Tomcat on the Tomcat > Wiki. > It's a bit old, but should still be valid. > > http://wiki.apache.org/tomcat/TomcatHibernate > > Hibernate does some nice things, such as making mapping between a > relational > database and objects easier, lazy loading, and loading classes through > related > tables into their proper classes. It also has interfaces to secondary > caches > (default is ehcache), which reduces the need to query a database for > read-mostly > information. > > In some of the more complex uses, the Hibernate documents recommend using > thread > local variables and filters to manage Hibernate sessions. This can get a > bit > tricky if you're not careful. > > You can do all of this manually with JNDI, some home-grown wrapper classes > to > manage relational-object mapping, and a caching implementation of your > choice. > However, Hibernate (or EclipseLink / JPA 2) makes doing this a bit easier. > > Can a misconfigured Hibernate application cause users to be disconnected? > Usually a misconfigured Hibernate application will refuse to start. > Sometimes if > your resource mapping is incorrect, the application will start, but those > resources (and queries) will not function. > > C3P0 pooling is the one included with Hibernate. Hibernate used to (2.x) > include > an interface to Apache DBCP, but this is no longer available in Hibernate > 3.x. > Thus, all of the pooling examples are written for C3P0. > > You can use any file that is found on the classpath. However, the default > is > hibernate.cfg.xml. To change the default, change the following code from: > > SessionFactory sf = new Configuration() > .configure() > .buildSessionFactory(); > > to: > > SessionFactory sf = new Configuration() > .configure("catdb.cfg.xml") > .buildSessionFactory(); > > where "catdb.cfg.xml" is the name you've given to the file. > > Further Hibernate questions are probably best answered on the Hibernate > mailing > lists or the Hibernate forum. > > . . . . just my two cents > > /mde/ > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
