The GA release of Spring Data release train Fowler marks the finishing line of 6 month of development. It's time to give you an impression of the content of this release and a brief overview about individual features. The major themes of the Fowler release train were performance improvements and enhanced Java 8 support that are mainly reflected in the Spring Data JPA and MongoDB modules but a lot of other ones have seen significant improvements, too.

The easiest way to upgrade to the Spring Data Fowler release train is by using Spring Boot and configuring the spring-data-releasetrain.version property to Fowler-RELEASE. If you're not using Spring Boot yet, add the Spring Data BOM to your <dependencyManagement />…

Spring Data JPA allows manually defining the query to be executed by a repository method using the @Query annotation. Unfortunately parameter binding in JPQL is quite limited only allowing you to set a value and providing some type conversion. The latest Spring Data JPA M1 release of the Evans release train eases this pain by adding support for using SpEL expressions to use dynamically bound parameters within statements in @Query annotations which provides additional flexibility when defining queries manually. In this blog post, I am going to introduce you to the capabilities of this feature.

Dear Spring Community,

I am pleased to announce the release of Spring Data Redis 1.2.1! This maintenance release contains some bugfixes in RedisTemplate as well as in RedisCacheManager.

As always this version is tested against Java 6, 7 and 8, for compatibility with Redis 2.6 and 2.8 as well as Spring Framework 4.0.3. You can run this Jira Query for a complete list of changes.

We look forward to your feedback on the forum or in the issue tracker.

Cheers, your Spring Data Team!

Dear Spring Community,

I am pleased to announce release of Spring Data Redis 1.1.1! This maintenance release contains some bugfixes and improvements, especially in the handling of connections, threads and the test harness setup.

This version is tested against Java 6, 7 and 8, for compatibility with Redis 2.4, 2.6 and 2.8 as well as Spring Framework 4.0.

Run this Jira Query for a complete list of changes.

We look forward to your feedback on the forum or in the issue tracker.

As the first milestone of the Spring Data release train Codd has now cooled down a little bit, I'd like to highlight some of the new features shipped with the MongoDB module.

SpEL support for projections in aggregation framework

Sometimes it can be pretty complicated to define arithmetic expressions within MongoDB aggregation framework projections.

Assume a part of an aggregation for an order is the gross price of it, effectively calculated using the following formula: (netPrice * discountRate + fixedCharge) * taxRate. With a discount rate of 0.8, a fixed charge of 1.2 and a tax rate of 1.19, the according DBObject to encode this formula with the MongoDB aggregation…