Accessing generic types at runtime in Java
Posted by Arjan Blokzijl mid-morning: February 7th, 2009
I was writing my n-th Dao implementation, this time using JPA.
I (and probably a whole lot of others) usually create a DAO per entity, parameterizing the entity type.
Specific DAO instances for entities implement the generic DAO using their entity type as type parameter. One generic DAO implementation exists, containing common operations like findById, persist, remove, etc. This generic DAO uses the class type specified by the implementing DAO classes (e.g. a Person) to manipulate or query the entity specified by this type. The (slightly) annoying problem for me has always been to instantiate that entity type in the generic DAO superclass. I've always done this by just creating a constructor in the generic DAO which takes a class argument containing the required Class of the entity. However, there's a better way, which I'll show in this post.
(more...)
Spicefactory – Part 1: Spice IT up, with Parsley, Cinnamon and Pimento
Posted by Maarten Winkels in the late evening: December 8th, 2008
In my article on InfoQ I've looked into how Grails and Flex can be combined to create a rapid application development platform. I think this is one of the most promising combinations for RIA development at the moment. The Flex space is very happening and there are many initiatives going on. A few days ago I encountered this one on the web: http://www.spicefactory.org/. Apart from the funny name, I think it is a very interesting initiative, because it brings some new concepts to the Flex remoting mix.
Archives
Xebia Sites
Categories
- Java (282)
- Agile (109)
- General (50)
- Testing (42)
- Performance (42)
- Hibernate (36)
- Scrum (33)
- Podcast (31)
- Architecture (31)
- Spring (28)
- SOA (24)
- Maven (22)
- Project Management (22)
- Middleware (23)
- Deployment (14)
- Flex (17)
- JPA (17)
- Eclipse (15)
- Xebia Labs (15)
- Quality Assurance (14)