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Is it possible to have multiple mappings to a single column?

April 26, 2017column mappings possible

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Is it possible to have multiple mappings to a single column?

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Yes, provided that only one of the mappings is made writable. TopLink requires one writable mapping for which it will retrieve the required value from the object when constructing the row for the database. You can configure a mapping to be read-only or, in the case of a 1:1 mapping, may configure a target foreign key. Both of these will allow an additional mapping of a field.