Tutorial problem 'no metadata'

Question

Hi there,
I'm working through the tutorial under an evaluation license of the
standard edition, and have gotten stuck in Chapter IV: Inventory
Growth. When I go to do the enhancement after compiling, the enhancer
complains
'Type "tutorial.Rabbit" has no metadata; enhancing as
persistence-aware.'
which then manifests itself again by having the schematool throw an
exception:
'Exception in thread "main" javax.jdo.JDOFatalUserException: Type
"class tutorial.Rabbit" does not have JDO metadata.'
What's going wrong? How do I fix it?
Notes that may be of assistance:
(1) Yes, I checked that my Rabbit.java is the same as in the
tutorial.solutions package.
(2) Yes, I updated the package.jdo file. But I've attached it just in
case something's wrong here.
(3) For the sake of thoroughness, I have been recompiling everything
before the enhancement step (which I always do via the package.jdo file
rather than naming the specific classes via the command-line
parameters).
(4) I'm not using the project structure implied by the tutorial. I'm
using my company's standard:
KodoTutorial\
src\tutorial - the .java source files.
bld - the resulting .class files.
This hasn't caused problems in prior chapters, though.
(5) I'm using Sybase db & drivers and the GenericDictionary. But this
wouldn't cause the enhancer problem, of course. And it's worked fine
anyway.
(6) I'm compiling via JBuilder.
(7) JDK 1.4.0 beta.
TIA.
Angus.

Answer 1

it' s possible, that the path, where your xml-file package.jdo is right.
bin\tutorial
can be. Than can the enhancer identify, that a jdo-file exists and
can this can make persistance-capable.
ok, cheers heiko
"Angus Monro" <[email protected]> schrieb im Newsbeitrag
news:[email protected]...
Hi there,
I'm working through the tutorial under an evaluation license of the
standard edition, and have gotten stuck in Chapter IV: Inventory
Growth. When I go to do the enhancement after compiling, the enhancer
complains
'Type "tutorial.Rabbit" has no metadata; enhancing as
persistence-aware.'
which then manifests itself again by having the schematool throw an
exception:
'Exception in thread "main" javax.jdo.JDOFatalUserException: Type
"class tutorial.Rabbit" does not have JDO metadata.'
What's going wrong? How do I fix it?
Notes that may be of assistance:
(1) Yes, I checked that my Rabbit.java is the same as in the
tutorial.solutions package.
(2) Yes, I updated the package.jdo file. But I've attached it just in
case something's wrong here.
(3) For the sake of thoroughness, I have been recompiling everything
before the enhancement step (which I always do via the package.jdo file
rather than naming the specific classes via the command-line
parameters).
(4) I'm not using the project structure implied by the tutorial. I'm
using my company's standard:
KodoTutorial\
src\tutorial - the .java source files.
bld - the resulting .class files.
This hasn't caused problems in prior chapters, though.
(5) I'm using Sybase db & drivers and the GenericDictionary. But this
wouldn't cause the enhancer problem, of course. And it's worked fine
anyway.
(6) I'm compiling via JBuilder.
(7) JDK 1.4.0 beta.
TIA.
Angus.
<?xml version="1.0"?>
<jdo>
<package name="tutorial">
<class name="Animal" />
<class name="Dog" persistence-capable-superclass="Animal" />
<class name="Rabbit" persistence-capable-superclass="Animal" >
<field name="parents">
<collection element-type="Rabbit"/>
<extension vendor-name="tt" key="inverse" value="children"/>
</field>
<field name="children">
<collection element-type="Rabbit"/>
<extension vendor-name="tt" key="inverse"value="parents"/>
</field>
</class>
</package>
</jdo>