Annotate Conditional Field Charter For Free

Conditional Annotations in Spring Boot Overview. @Conditional. As a Method Level Annotation. As a Type (Class) Level Annotation. ... Custom Condition. Combine Conditions with Any Match. Combine Conditions with All Match. ... Predefined Conditional Annotations. @ConditionalOnProperty. @ConditionalOnExpression. ... Conclusion.

@SpringBootApplication: It is a combination of three annotations @EnableAutoConfiguration, @ComponentScan, and @Configuration.

It allows you to setup features based upon certain conditions like presence of a class in classparth or a JAR File which is how Spring Boot Auto-configuration works. The majority of @Conditional annotation users are, Conditions based on Bean definition or object present in the application.

Annotation Interface Conditional Indicates that a component is only eligible for registration when all specified conditions match. A condition is any state that can be determined programmatically before the bean definition is due to be registered (see Condition for details).

In this tutorial, we'll take a look at the @Conditional annotation. It's used to indicate whether a given component is eligible for registration based on a defined condition.

Spring Condition Interface It has a method matches and our conditional logic should go inside this method. Then we can use the class we have defined in the @Conditional annotation to check for a condition. Following the Condition interface that we need to implement in our custom condition class.

@Conditional vs @Profile The use of @Conditional and Condition is is similar to selecting different profiles using @Profile but is more flexible because the conditions are specified in Java code rather than using some pre defined property flag or some system property.