10g Developer Preview (R2)  -- too much reorganizing

There has been quite a lot of class re-shuffling in the upcoming release, which is going to cost me quite a lot of time and trouble to react to.
In particular, we are very much affected by changes to the Descriptor object, since we not only generate a bunch of descriptors at runtime, we actually generate code that generates descriptors. So now our generated classes will throw method-not-found exceptions when used with the new libraries.
I just wanted to try out the new XML mapping things (which look very cool) but I find myself with days of conversion work...

You are correct ClassDescriptor should now be used in place of Descriptor; RelationalDescriptor can also be used for relational projects.
Currently you will have to cast to avoid the deprecation warning.
i.e.
ClassDescriptor descriptor = (ClassDescriptor) project.getDescriptor(myClass);
Renaming/moving/deprecating classes requires this to maintain backward compatibility until the classes can be removed in a future release.
ClassDescriptor subclasses Descriptor, so using Descriptor will continue to work, and any API referencing Descriptor must remain so for backward compatibility.
I believe the only methods that were changed (not just deprecated) were Project.getDescriptors() (from Hashtable to Map) and Descriptor.getPrimaryKeyFields() (from Vector to List).
In general it would be a good idea to always use the collection interfaces in referencing TopLink structures.
Sorry for the inconvenience, we always try to keep backward compatibility issues to a minimum, but sometimes they are unavoidable.

Similar Messages

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    I need the aqapi.jar from these old versions of OC4J. Any help will be greatly appreciated!

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    Thomas

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    You are correct ClassDescriptor should now be used in place of Descriptor; RelationalDescriptor can also be used for relational projects.
    Currently you will have to cast to avoid the deprecation warning.
    i.e.
    ClassDescriptor descriptor = (ClassDescriptor) project.getDescriptor(myClass);
    Renaming/moving/deprecating classes requires this to maintain backward compatibility until the classes can be removed in a future release.
    ClassDescriptor subclasses Descriptor, so using Descriptor will continue to work, and any API referencing Descriptor must remain so for backward compatibility.
    I believe the only methods that were changed (not just deprecated) were Project.getDescriptors() (from Hashtable to Map) and Descriptor.getPrimaryKeyFields() (from Vector to List).
    In general it would be a good idea to always use the collection interfaces in referencing TopLink structures.
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    [junit] at oracle.toplink.internal.expressions.DataExpression.normalize(DataExpression.java:343)
    [junit] at oracle.toplink.internal.expressions.QueryKeyExpression.normalize(QueryKeyExpression.java:369)
    [junit] at oracle.toplink.internal.expressions.QueryKeyExpression.normalize(QueryKeyExpression.java:356)
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    [junit] at oracle.toplink.internal.expressions.ExpressionNormalizer.normalizeSubSelects(ExpressionNormalizer.java:82)
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    Local Exception Stack:

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    Duration                                 : 34s 993ms
    Overall bit rate mode                : Variable
    Overall bit rate                         : 2 050 Kbps
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    Format/Info                              : Advanced Video Codec
    Format profile                           : [email protected]
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    Codec ID/Info                            : Advanced Video Coding
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    Height                                     : 1 080 pixels
    Frame rate mode                      : Constant
    Frame rate                               : 30.000 fps
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