It's interesting to have a look at google AppEngine solutions. If you planned to publish your GWT app using this environnement it's valuable to consider the technologies proposed like JPA, JDO... http://code.google.com/intl/fr/appengine/docs/java/gettingstarted/usingdatastore.html
My preference goes to JPA to start a new dev. Google example is mainly about JDO but JPA is the J2EE5 new API, JDO is a little old fashionned. Using App Engine this API utilisation is retricted to a subset (with google nucleus engine) but with your own env. you are free to use the full functionnalities set. Furthermore JPA is only an interface and you are free to select and change your background engine like Hibernate or Toplink. 2 very good and strong solutions. I can't see a real interest in a direct JDBC utilisation if you don't need to keep your project as small as possible with less jar. JPA or Hibernate can be used as a minimalist interface with good performances and no effort. "Only" describe your POJO classes and some annotations and he provide the column/fields mapping and basic CRUD methods. It's not necessary to define relations like ManyToMany, OneToMany... this way is close to JDBC but clean and easyest. Often I use Hibernate or JPA like a basic way to read/update my POJO. Working like an object oriented database or defining the navigationnal between classes is interesting but it require a deeper think to loading requests, foreign key management, sizes of data, lazy mode, request loading optimization, data collection transfer... this is not so easy to avoid beginners traps. You can choose this way latter. Gilles. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
