In hibernate, the HQL query "from Entity1 join Entity2" will return
List<Object[]> with Object[0] being Entity1 and Object[2] being Entity2.

You could use a custom BeanModel and PropertyConduits to look up properties
from the Object[] array.

See the demo here which uses a custom BeanModel and PropertyConduits to
generate a grid from a List<Map>
http://tapestry-stitch.uklance.cloudbees.net/mapgriddemo

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