| Martin Zaun (JIRA) 2006-02-25, 5:46 pm |
| [ 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/vmsp...aintenance.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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