I searched whether I should annotate POJO with @Component or not. It seems like it is recommended not to annotate pojo. Here is my OrderStatusMnemonic Configuration class that reads a txt file: OrderStatus POJO: Since I am autowiring OrderStatus POJO class I am getting error: Consider defining a bean of type …
Tag: annotations
Intellij Code Inspection for Custom Annotation
One of the problems I’ve encountered while using DTOs is that I often find myself shipping (accidentally) entities along with DTOs. To mitigate this problem, I created another Maven project with an annotation (@ValidDTO) and its processor that finds if a DTO annotated with @ValidDTO has @Entity annotate…
Swagger/OpenAPI annotations V3 – use Enum values in swagger annotations
I’m creating the the API description of our application using Swagger/OpenApi V3 annotations, imported from following dependency: One of the annotations is a @Schema annotation that accepts an attribute named allowableValues which allows a an array of strings: Now I would like to use a custom method con…
Create custom method level annotation only available to specific return types [AOP]
I want to create an annotation which is only available to a specific type of return values. For example this is my annotation. I also have an interface: An example class that implements my interface: So after these, I want to configure my annotation in a way that it won’t even compile if the return type…
DataStax Java Driver 4.0: is object mapping going to be supported?
On March 2019 DataStax Java Driver v4.0.0 was released, and my project should plan future migration to it, however I was not able to found any mentioning of object mapping as it was done in 3.x.x version. I checked DataStax GitHub and JIRA and there is nothing that can help. Is it going to be supported? If ye…
@PostConstruct and @PreDestroy annotations do not work
I have TennisCoach class: And such main class: Expected output is: Inside default constructor Inside postconstructor DailyFortune Practice your backhand volley Inside predestroyer But I get this: Inside default constructor DailyFortune Practice your backhand volley It seems like @PostContruct and @PreDestroy …
How to get annotation parameter in annotation processor
I’m writing my own annotation processor and I’m trying to get parameter of my annotation like in the code below in process method: What I get is An exception occurred: javax.lang.model.type.MirroredTypesException: Attempt to access Class objects for TypeMirrors [] during build. Anyone know how to …
Dynamic serialization using Jackson – removing fields with specific annotations
Went down a path of creating an annotation that would dynamic determine whether a field should be serialized or not. The annotation’s implementation is as follows: Now the code for the Serializer: A little bit of code to show how it works: And the output is as follows: How do I get the field pin to be r…
What is the use of @EnableWebSecurity in Spring?
As per the Spring documantation: Add this annotation to an @Configuration class to have the Spring Security configuration defined in any WebSecurityConfigurer or more likely by extending the WebSecurityConfigurerAdapter base class and overriding individual methods: Or As this @EnableWebSecurity depicts, is us…
enable Annotation Processors option in Android Studio 2.2
I’m trying to use java 8 in my project and for that I added the jack compiler. After enabling jack I started having problems with libraries that use Annotation Processing and looking in the web I read that I need android studio 2.2 and com.android.tools.build:gradle:2.2.0-alpha6 to compile libraries tha…