[eclipselink-users] Customizing the column names of embeddables

[Frank Schwarz <fs5@xxxxxxx>]

Hi,

I am trying to customize the column names of embeddables with the help of a
class customizer, but I am somehow stuck.

Let's say you have a class "Parcel" with attributes height, length, width -
all of them are of the same type "LengthType". "LengthType" is an embeddable
consisting of value and unit. So If you what to map this, you have the use
@AttributeOverride-annotations - otherwise you will end with three columns
named "value" and three ones named "unit".

So to get rid of the @AttributeOverrides, I wrote a class customizer and
annotated the "Parcel"-class. Within the customize-method, I called
classDescriptor.getMappingForAttributeName("height"),... to manipulate the
fieldnames on that mapping. However at this place, I am not able to get
information about the "LengthType"-class and its fields:
classDescriptor.getMappingForAttributeName("height").getReferenceDescriptor()
is returning null. On the other hand, getReferenceClass() is returning
"LengthType" as expexted. But I need some sort of Session to lookup the
class descriptor by type - with I do not have at this place.

How do I get to the class descriptor of the referenced class (i.e.
"LengthType")?

Thank you,
Frank
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