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From "Martin Zaun (JIRA)" <j...@apache.org>
Subject [jira] Updated: (JDO-195) JDO11 RI enhancer support for JDK1.5 classfiles
Date Sat, 25 Feb 2006 01:14:38 GMT
     [ http://issues.apache.org/jira/browse/JDO-195?page=all ]

Martin Zaun updated JDO-195:
----------------------------

    Priority: Minor  (was: Major)

> JDO11 RI enhancer support for JDK1.5 classfiles
> -----------------------------------------------
>
>          Key: JDO-195
>          URL: http://issues.apache.org/jira/browse/JDO-195
>      Project: JDO
>         Type: New Feature
>   Components: ri11
>     Reporter: Martin Zaun
>     Assignee: Martin Zaun
>     Priority: Minor
>  Attachments: patch_ri11_enhancer_jdk15_wo_signatures
>
> The JDO11 RI enhancer should be extended to support JDK 1.5 classfiles.
> According to the JDK 1.5 ammendments to the VM Spec, 2nd edition
>   http://java.sun.com/docs/books/vmspec/2nd-edition/jvms-maintenance.html
> support for the following new features is needed:
> - new major, minor version number: {49,0}
> - new access and property modifiers:
>   - new class modifiers:
>     ACC_ANNOTATION 0x2000 Declared as an annotation type.
>     ACC_ENUM 0x4000 Declared as an enum type.
>   - new field flag:
>     ACC_ENUM 0x4000 Declared as an element of an enum.
>   - new method flags:
>     ACC_BRIDGE 0x0040 A bridge method, generated by the compiler.
>     ACC_VARARGS 0x0080 Declared with variable number of arguments.
> - new opcode: invokedynamic
>   Operation: Invoke instance method; resolve and dispatch based on class
>   Format: invokedynamic, indexbyte1, indexbyte2
>   Forms: invokedynamic = 186 (0xba)
>   Operand Stack: ..., objectref, [arg1, [arg2 ,T](B] => ...
> - new ldc, ldc_w operand type: CONSTANT_Class
> - new Signature Attribute
>   It needs to be investigated whether Signature attributes have to be
>   supplied for JDO methods that carry the type of managed fields or
>   the PC class as parameter or return.
> - The other new, pre-defined attributes don't need explicit support but
>   can be handled by the enhancer generically:
>   - new EnclosingMethod attribute
>   - new RuntimeVisibleAnnotations attribute
>   - new RuntimeInvisibleAnnotations attribute
>   - new RuntimeVisibleParameterAnnotations attribute
>   - new RuntimeInvisibleParameterAnnotations attribute
>   - new AnnotationDefault attribute
>   - new SourceDebugExtension Attribute
>   - new LocalVariableTypeTable Attribute

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