arez.annotations.PostConstruct Maven / Gradle / Ivy
package arez.annotations;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Target;
/**
* Annotation to identify method that is invoked after the component is constructed.
* The method is invoked after the component classes constructor has been invoked and all
* the Arez elements have been constructed and scheduled but before the scheduler has been
* triggered. Thus this method is invoked before the first execution of any observers or
* {@link Memoize#keepAlive()} computable values.
*
* If there are multiple methods annotated with this annotation then the methods declared in parent
* classes will be invoked first and multiple methods within a single class will be invoked in declaration
* order.
*
* The method that is annotated with this annotation must comply with the additional constraints:
*
* - Must not be annotated with any other arez annotation except {@link Action}
* - Must have 0 parameters
* - Must not return a value
* - Must not be private
* - Must not be static
* - Must not be abstract
* - Must not throw exceptions
* - Must be accessible to the class annotated by the {@link ArezComponent} annotation.
* -
* Should not be public as not expected to be invoked outside the component. A warning will be generated but can
* be suppressed by the {@link SuppressWarnings} or {@link SuppressArezWarnings} annotations with a key
* "Arez:PublicLifecycleMethod". This warning is also suppressed by the annotation processor if it is implementing
* an interface method.
*
* -
* Should not be protected if in the class annotated with the {@link ArezComponent} annotation as the method is not
* expected to be invoked outside the component. A warning will be generated but can be suppressed by the
* {@link SuppressWarnings} or {@link SuppressArezWarnings} annotations with a key "Arez:ProtectedMethod".
*
*
*/
@Documented
@Target( ElementType.METHOD )
public @interface PostConstruct
{
}
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