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• SupportedValidationTarget.java

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jakarta.validation.constraintvalidation.SupportedValidationTarget Maven / Gradle / Ivy

/*
 * Jakarta Bean Validation API
 *
 * License: Apache License, Version 2.0
 * See the license.txt file in the root directory or .
 */
package jakarta.validation.constraintvalidation;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import jakarta.validation.ConstraintValidator;

import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Defines the target(s) a {@link ConstraintValidator} can validate.
 * 

 * A {@code ConstraintValidator} can target the (returned) element
 * annotated by the constraint, the array of parameters of a method
 * or constructor (aka cross-parameter) or both.
 * 

 * If {@code @SupportedValidationTarget} is not present, the
 * {@code ConstraintValidator} targets the (returned) element annotated
 * by the constraint.
 * 

 * A {@code ConstraintValidator} targeting cross-parameter must accept
 * {@code Object[]} (or {@code Object}) as the type of object it validates.
 *
 * @author Emmanuel Bernard
 * @since 1.1
 */
@Documented
@Target({ TYPE })
@Retention(RUNTIME)
public @interface SupportedValidationTarget {

	ValidationTarget[] value();
}