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.MetadataDefinition;

    37 import jdk.jfr.ValueDescriptor;

    38 import jdk.test.lib.Asserts;

    39 import jdk.test.lib.jfr.Events;

    40 

    41 /*

    42  * @test

    43  * @key jfr

    44  * @library /test/lib

    45  * @run main/othervm jdk.jfr.api.metadata.annotations.TestMetadata

    46  */

    47 public class TestMetadata {

    48 

    49     @Target({ ElementType.ANNOTATION_TYPE, ElementType.TYPE, ElementType.FIELD })

    50     @Retention(RetentionPolicy.RUNTIME)

    51     @interface OtherAnnotation {

    52     }

    53 

    54     @MetadataDefinition

    55     @SecondJFRAnnotation

    56     @Target({ ElementType.ANNOTATION_TYPE, ElementType.TYPE, ElementType.FIELD })

    57     @Retention(RetentionPolicy.RUNTIME)

    58     @interface FirstJFRAnnotation {

    59     }

    60 

    61     @MetadataDefinition

    62     @Target({ ElementType.ANNOTATION_TYPE, ElementType.TYPE, ElementType.FIELD })

    63     @Retention(RetentionPolicy.RUNTIME)

    64     @interface SecondJFRAnnotation {

    65     }

    66 

    67     @FirstJFRAnnotation

    68     @OtherAnnotation

    69     static class MetadataEvent extends Event {

    70         @OtherAnnotation

    71         @FirstJFRAnnotation

    72         String field;

    73     }

    74 

    75     public static void main(String[] args) throws Exception {

    76         EventType t = EventType.getEventType(MetadataEvent.class);

    77         ValueDescriptor field = t.getField("field");

    78         Events.hasAnnotation(field, FirstJFRAnnotation.class);

    79         Asserts.assertTrue(field.getAnnotation(OtherAnnotation.class) == null, "Only annotation annotated with @Metadata should exist");

    80 

    81         AnnotationElement a = Events.getAnnotationByName(t, FirstJFRAnnotation.class.getName());

    82         Asserts.assertTrue(a.getAnnotation(SecondJFRAnnotation.class) != null , "Annotations with @Metadata should be followed for indirect annotations");

    83     }

    84 }