By: Dorris Viewed: 153187 times
Sometimes, you want the Database to do some computation for you rather than in the JVM, you might also create some kind of virtual column. You can use a SQL fragment (aka formula) instead of mapping a property into a column. This kind of property is read only (its value is calculated by your formula fragment).
@Formula("obj_length * obj_height * obj_width") public long getObjectVolume()
The SQL fragment can be as complex as you want and even include subselects.
Most Viewed Articles (in Hibernate )
Latest Articles (in Hibernate)
Comment on this tutorial
- Cloud Computing
- Java Beans
- Mac OS X
- Office 365
- Tech Reviews