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16.3.2. Using return-property to Explicitly Specify Column/Alias Names
You can explicitly tell Hibernate what column aliases to use with
<return-property>, instead of using the {}-syntax to let Hibernate inject its own aliases.For example:
<return-property> also works with multiple columns. This solves a limitation with the {}-syntax which cannot allow fine grained control of multi-column properties.
In this example
<return-property> was used in combination with the {}-syntax for injection. This allows users to choose how they want to refer column and properties.
If your mapping has a discriminator you must use
<return-discriminator> to specify the discriminator column.