1 /*
   2  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.api.metadata.annotations;
  27 
  28 import java.lang.annotation.ElementType;
  29 import java.lang.annotation.Retention;
  30 import java.lang.annotation.RetentionPolicy;
  31 import java.lang.annotation.Target;
  32 
  33 import jdk.jfr.AnnotationElement;
  34 import jdk.jfr.Event;
  35 import jdk.jfr.EventType;
  36 import jdk.jfr.Label;
  37 import jdk.jfr.MetadataDefinition;
  38 import jdk.jfr.Relational;
  39 import jdk.jfr.ValueDescriptor;
  40 import jdk.test.lib.Asserts;
  41 import jdk.test.lib.jfr.Events;
  42 
  43 /**
  44  * @test
  45  * @key jfr
  46  * @requires vm.hasJFR
  47  * @library /test/lib
  48  * @run main/othervm jdk.jfr.api.metadata.annotations.TestRelational
  49  */
  50 public class TestRelational {
  51 
  52     @MetadataDefinition
  53     @Label("User Id")
  54     @Relational
  55     @Target({ ElementType.FIELD })
  56     @Retention(RetentionPolicy.RUNTIME)
  57     @interface UserId {
  58     }
  59 
  60     static class UserEvent extends Event {
  61         @UserId
  62         String id;
  63     }
  64 
  65     public static void main(String[] args) throws Exception {
  66         EventType t = EventType.getEventType(UserEvent.class);
  67         ValueDescriptor field = t.getField("id");
  68         AnnotationElement userId = Events.getAnnotation(field, UserId.class);
  69         Relational r = userId.getAnnotation(Relational.class);
  70         Asserts.assertTrue(r != null, "Expected relational annotation to have annotation @Relational");
  71     }
  72 }