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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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package jdk.jfr.api.metadata.annotations;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import jdk.jfr.AnnotationElement;
import jdk.jfr.Event;
import jdk.jfr.EventType;
import jdk.jfr.Label;
import jdk.jfr.MetadataDefinition;
import jdk.jfr.Relational;
import jdk.jfr.ValueDescriptor;
import jdk.test.lib.Asserts;
import jdk.test.lib.jfr.Events;

/**
 * @test
 * @key jfr
 * @requires vm.hasJFR
 * @library /test/lib
 * @run main/othervm jdk.jfr.api.metadata.annotations.TestRelational
 */
public class TestRelational {

    @MetadataDefinition
    @Label("User Id")
    @Relational
    @Target({ ElementType.FIELD })
    @Retention(RetentionPolicy.RUNTIME)
    @interface UserId {
    }

    static class UserEvent extends Event {
        @UserId
        String id;
    }

    public static void main(String[] args) throws Exception {
        EventType t = EventType.getEventType(UserEvent.class);
        ValueDescriptor field = t.getField("id");
        AnnotationElement userId = Events.getAnnotation(field, UserId.class);
        Relational r = userId.getAnnotation(Relational.class);
        Asserts.assertTrue(r != null, "Expected relational annotation to have annotation @Relational");
    }
}
