|Re: [eclipselink-users] Customizing the column names of embeddables|
You need to get the descriptor for LengthType, so need the Session to do this. Perhaps use a SessionCustomizer instead of a DescriptorCustomizer. Frank Schwarz wrote: > > 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 > ----- http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland http://www.eclipse.org/eclipselink/ EclipseLink , http://www.oracle.com/technology/products/ias/toplink/ TopLink Wiki: http://wiki.eclipse.org/EclipseLink EclipseLink , http://wiki.oracle.com/page/TopLink TopLink Forums: http://forums.oracle.com/forums/forum.jspa?forumID=48 TopLink , http://www.nabble.com/EclipseLink-f26430.html EclipseLink Book: http://en.wikibooks.org/wiki/Java_Persistence Java Persistence -- View this message in context: http://old.nabble.com/Customizing-the-column-names-of-embeddables-tp28276405p28287885.html Sent from the EclipseLink - Users mailing list archive at Nabble.com.
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