. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1.3. Programming Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 1.5. Functional Endpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . that are well-established in the async, non-blocking space. The other part of the answer is functional programming. Much as the addition of annotations in Java 5 created opportunities (such as annotated

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 1.4. Functional Endpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . for more details. 1.3. Annotated Controllers WebFlux Spring MVC provides an annotation-based programming model where @Controller and @RestController components use annotations to express request mappings explained later in this chapter.  Guides and tutorials on spring.io use the annotation-based programming model described in this section. 1.3.1. Declaration WebFlux You can define controller beans

no value” semantics without paying the cost of wrappers, such as Optional. (Kotlin allows using functional constructs with nullable values. See this comprehensive guide to Kotlin null-safety.) Although Overflow response. 1.6. Bean Definition DSL Spring Framework supports registering beans in a functional way by using lambdas as an alternative to XML or Java configuration (@Configuration and @Bean) based on JavaConfig and does not yet provide specific support for functional bean definition, but you can experimentally use functional bean definitions through Spring Boot’s ApplicationContextInitializer

no value” semantics without paying the cost of wrappers, such as Optional. (Kotlin allows using functional constructs with nullable values. See this comprehensive guide to Kotlin null-safety.) Although Overflow response. 1.6. Bean Definition DSL Spring Framework supports registering beans in a functional way by using lambdas as an alternative to XML or Java configuration (@Configuration and @Bean) based on JavaConfig and does not yet provide specific support for functional bean definition, but you can experimentally use functional bean definitions through Spring Boot’s ApplicationContextInitializer

. . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1.3. Spring Framework’s Consistent Programming Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2. Understanding abstraction for transaction management that delivers the following benefits: • A consistent programming model across different transaction APIs, such as Java Transaction API (JTA), JDBC, Hibernate, ) Another downside is that local transactions are invasive to the programming model. 1.1.3. Spring Framework’s Consistent Programming Model Spring resolves the disadvantages of global and local transactions

........................................................... 39 5. Spring AOP: Aspect Oriented Programming with Spring ............................................................. 5.1. Concepts ...... management mentioned before. Spring's AOP package provides an AOP Alliance compliant aspect-oriented programming implemention allowing you to define, for example, method-interceptors and pointcuts to cleanly Framework Version 1.1.2 39 Chapter 5. Spring AOP: Aspect Oriented Programming with Spring 5.1. Concepts Aspect-Oriented Programming (AOP) complements OOP by providing another way of thinking about program

........................................................... 43 5. Spring AOP: Aspect Oriented Programming with Spring ............................................................. 5.1. Concepts ...... management mentioned before. Spring's AOP package provides an AOP Alliance compliant aspect-oriented programming implemention allowing you to define, for example, method-interceptors and pointcuts to cleanly Framework Version 1.1.3 44 Chapter 5. Spring AOP: Aspect Oriented Programming with Spring 5.1. Concepts Aspect-Oriented Programming (AOP) complements OOP by providing another way of thinking about program

........................................................... 42 5. Spring AOP: Aspect Oriented Programming with Spring ............................................................. 5.1. Concepts ...... management mentioned before. Spring's AOP package provides an AOP Alliance compliant aspect-oriented programming implemention allowing you to define, for example, method-interceptors and pointcuts to cleanly Framework Version 1.1.2 43 Chapter 5. Spring AOP: Aspect Oriented Programming with Spring 5.1. Concepts Aspect-Oriented Programming (AOP) complements OOP by providing another way of thinking about program

........................................................... 46 5. Spring AOP: Aspect Oriented Programming with Spring ............................................................. 5.1. Concepts ...... management mentioned before. Spring's AOP package provides an AOP Alliance compliant aspect-oriented programming implementation allowing you to define, for example, method-interceptors and pointcuts to cleanly Framework Version 1.2.1 46 Chapter 5. Spring AOP: Aspect Oriented Programming with Spring 5.1. Concepts Aspect-Oriented Programming (AOP) complements OOP by providing another way of thinking about program

........................................................... 45 5. Spring AOP: Aspect Oriented Programming with Spring ............................................................. 5.1. Concepts ...... management mentioned before. Spring's AOP package provides an AOP Alliance compliant aspect-oriented programming implementation allowing you to define, for example, method-interceptors and pointcuts to cleanly Spring Framework Version 1.2 45 Chapter 5. Spring AOP: Aspect Oriented Programming with Spring 5.1. Concepts Aspect-Oriented Programming (AOP) complements OOP by providing another way of thinking about program