Unique.java

package javax.persistence;

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

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

/**
* @author Socheat KHAUV
*/
@Target({ FIELD })
@Retention(RUNTIME)
@Documented
public @interface Unique {
    String group() default "";
}