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From "Vladimir Beliaev (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5086) [drlvm][geronimo] AnnotatedElement.getDeclaredAnnotations() throws exception if annotation is not available
Date Fri, 16 Nov 2007 11:45:42 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12543048
] 

Vladimir Beliaev commented on HARMONY-5086:
-------------------------------------------

Yap, I've put all of the reasons of "resolution failed" to "must be ignored" and I agree this
is not quite correct.

Alexey, thanks for the fix of fix... Looks like nothing to be done with it right now and the
patch is ready for committing.

Thanks
Vladimir Beliaev

> [drlvm][geronimo] AnnotatedElement.getDeclaredAnnotations() throws exception if annotation
is not available
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-5086
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5086
>             Project: Harmony
>          Issue Type: Bug
>          Components: App-Oriented Bug Reports, DRLVM
>            Reporter: Vasily Zakharov
>            Assignee: Alexey Varlamov
>            Priority: Critical
>         Attachments: H5086.patch, H5086fix.diff, H5086test.diff
>
>
> When AccessibleObject.getDeclaredAnnotations() is called and the annotation class to
be returned cannot be loaded, RI just skips that annotation, and Harmony throws exception.
> To reproduce, use the following code:
> import java.lang.annotation.*;
> import java.lang.reflect.*;
> import java.net.*;
> public class Test {
>     public static void main(String[] args) {
>         try {
>             Class cls = Foo.class;
>             Field field = cls.getDeclaredFields()[0];
>             Constructor constructor = cls.getDeclaredConstructors()[0];
>             Method method = cls.getDeclaredMethods()[0];
>             int can = cls.getDeclaredAnnotations().length;
>             int fan = field.getDeclaredAnnotations().length;
>             int nan = constructor.getDeclaredAnnotations().length;
>             int man = method.getDeclaredAnnotations().length;
>             System.out.println("SUCCESS: " + can + " " + fan + " " + nan + " " + man);
>         } catch (Exception e) {
>             e.printStackTrace(System.out);
>         }
>     }
> }
> @Retention(RetentionPolicy.RUNTIME)
> @interface Ann {}
> @Ann class Foo {
>     @Ann int field;
>     @Ann Foo() {}
>     @Ann void method() {}
> }
> If the test is run normally, both RI and Harmony produce the same result, but if Ann.class
file is REMOVED, the output becomes different.
> Output on RI and Harmony with Ann.class present:
> SUCCESS: 1 1 1
> Output on RI with Ann.class removed:
> SUCCESS: 0 0 0
> Output on Harmony with Ann.class removed:
> java.lang.TypeNotPresentException: Type Ann not present
>         at org.apache.harmony.vm.VMGenericsAndAnnotations.getDeclaredAnnotations(VMGenericsAndAnnotations.java)
>         at java.lang.reflect.Field$FieldData.getAnnotations(Field.java:457)
>         at java.lang.reflect.Field.getDeclaredAnnotations(Field.java:42)
>         at Test.main(Test.java:11)
> Caused by: java.lang.NoClassDefFoundError: Ann
>         at org.apache.harmony.vm.VMGenericsAndAnnotations.getDeclaredAnnotations(VMGenericsAndAnnotations.java)
>         ... 3 more
> Caused by: java.lang.ClassNotFoundException: Ann
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:894)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:575)
>         at java.lang.ClassLoader$SystemClassLoader.loadClass(ClassLoader.java:963)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
>         at org.apache.harmony.vm.VMGenericsAndAnnotations.getDeclaredAnnotations(VMGenericsAndAnnotations.java)
>         ... 3 more
> This issue prevents Apache Geronimo 2.0 from starting on Harmony. 

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