Topic: General Level: All
In this post, we shall catch up on the multi-faceted technological updates that happened over the past week,
Modularity can be achieved by confining the impact of change within the module, a well-defined boundary without leaks. JDK9s Modules offered preliminary isolation for packaged module structures, however at an application level module accesses should be rule defined. Spring Modulith with ArchUnit and jMolecules, established package relationship, restricted accesses and validates relationship during tests. By default, a module can access the content of any other module but cannot access subpackages of other modules.
Benefits of using Spring 6 in terms of ORM, Text blocks to hold SQL in query annotation, Records to define DTO, UUID as basic type in JPA 3, JPQL with new SQL functions, EntityManager and EntityManagerFactory can be used in try-with-resources as it extends Autoclosable interface, ResultSet JDBC fetch column positional values, and JPQL, HQL, Criteria API are unified as Semantic Query Model, Optimized Dialects, Auto Deduplication on JOIN FETCH without query hints
Spring Boot 3.0 has been released and is available in the Maven central repository. Extending support for Spring framework 6.0 and GraalVM Native images, further baseline to JDK 17, Jakarta EE10 and EE9. Log4j2 enhancements, ConstructorBinding elimination if a class has a parameterized constructor while using ConfigurationProperties, auto registration and configuration of micrometer for traces and metrics, Spring Data JPA auto configurations for converters, mapping and dialects, and SpringBootTest on Main methods, configurations performed in main can be detected by tests.
The attributes of a singleton class are that there will only be a single instance of the class always, and the instance is created onetime and reused via the static accessor method. When it comes to unit testing of the static instance, Mockito provides mockStatic which is the inline mock representation that returns a mocked singleton instance.
Spring Boot 3 with AOT (ahead of time) compilation engine that supports GraalVM Native image. Static code analysis for creating native executables, hints for reflective and proxy accesses with tests
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