Spring 3.1 Features Worth Knowing About
- 1. Spring 3.1 Features Worth Knowing About (Available For Download Today) Rossen Stoyanchev, Software Engineer CONFIDENTIAL © 2010 SpringSource, A division of VMware. All rights reserved
- 2. Agenda Environment Java Configuration DSL Cache Abstraction CONFIDENTIAL 2
- 3. Moving an Application Across Environments TRANSFER SERVICE DEV ACCOUNT DAO QA DATA SOURCE PROD CONFIDENTIAL 3
- 4. Environment-Specific Properties In XML Property Source: dev/database.properties Property Source: Java system property dev/database.properties qa/database.properties java -DENV=prod ... prod/database.properties CONFIDENTIAL 4
- 5. Environment-Specific Properties In Java Property Source: Java system property? CONFIDENTIAL 5
- 6. Spring EL Expressions in Spring 3.0 Easier to see where properties originate from CONFIDENTIAL 6
- 7. What About “Structural” Differences ? CONFIDENTIAL 7
- 8. Environment-Specific Configuration in XML prod/database-context.xml dev/database-context.xml Choose from multiple app-context.xml files to accommodate differences CONFIDENTIAL 8
- 9. Environment-Specific Configuration in Java Accommodate differences in code CONFIDENTIAL 9
- 10. Spring 3.1 “Environment” Abstraction A concrete representation with two key aspects • Property Sources • Bean Profiles Property Source: Bean Profile: A variety of sources: property A logical group of bean files, system properties, definitions. Registered only if servlet context, JNDI, etc. the profile is active. CONFIDENTIAL 10
- 11. Managing Property Sources In standalone code In a Web application • Implement ApplicationContextInitializer • Register via contextInitializerClasses context parameter in web.xml Default property sources • JVM properties • System envrionment variables CONFIDENTIAL 11
- 12. Accessing Environment Properties In standalone code Via @Autowired or EnvironmentAware interface In configuration (via placeholders) <context:property-placeholder/> also now falls back on Environment property sources CONFIDENTIAL 12
- 13. Beans Profiles With XML Assign all beans to profile Multiple profiles can be listed Assign enclosed beans to a profile CONFIDENTIAL 13
- 14. Bean Profiles In Java CONFIDENTIAL 14
- 15. Bean Profile Activation In code In Web applications CONFIDENTIAL 15
- 16. Agenda Environment Java Configuration DSL Cache Abstraction CONFIDENTIAL 16
- 17. Custom XML Namespaces Custom XML namespaces have become very popular • In Spring and in other frameworks Succinct and highly expressive Each namespace element can result in the registration of any number of bean definitions Question: How do get the same benefits in Java configuration? CONFIDENTIAL 17
- 18. Feature Specifications Java configuration equivalent to an XML namespace Declared in @FeatureConfiguration classes Beans declared elsewhere can be autowired in. Results in same bean declarations as <tx:annotation-driven /> CONFIDENTIAL 18
- 19. FeatureSpecifications Are Designed For Ease of Use CONFIDENTIAL 19
- 20. Agenda Environment Java Configuration DSL Cache Abstraction CONFIDENTIAL 20
- 21. Spring 3.1 Cache Abstraction CacheManager and Cache abstractions • org.springframework.cache Backend adapters for EhCache, GemFire, Coherence, etc. Cache namespace • <cache:annotation-driven /> CacheManager SPI • EhCacheManager • GemFireCacheManager CONFIDENTIAL 21
- 22. Annotation-Based Caching Cache name Custom key Cache condition CONFIDENTIAL 22
- 23. Spring 3.1 M1 Blog Series: ---------------------------------- http://blog.springsource.com/2008/03/26/spring-java- configuration-whats-new-in-m3/ https://github.com/cbeams/spring-3.1-profiles-xml https://github.com/cbeams/spring-3.1-profiles-java https://github.com/cbeams/spring-3.1-featurespec https://github.com/rstoyanchev/spring-3.1-mvc-java-config Review updated Spring Reference Documentation Provide feedback via JIRA and Forums CONFIDENTIAL 23
- 24. Thank You CONFIDENTIAL 24