Java/Hibernate - Add extra fields into an array table?

Question

Is it possible to add a boolean field into an array table in hibernate? I know this goes against the theoretical structure of an array, but maybe there's another collection type usable with hibernate that can do this?

i.e. (for illustration purposes)

idPerson      idAddress    indx      currentlyResident
    2             32        0               1

where idPerson is key
indx is index
idAddress is many-to-many

Thanks!

edit: This boolean value needs to be saved as part of the cross-reference table

Hibernate Mapping is very standard, just need to get an extra property in there!

<array name="addresses" table="personAddressCrossReference" cascade="all">
   <key column="idPerson" />
   <index column="indx" />
   <many-to-many column="idAddress" class="etc." />
</array>

Please show your hibernate-mapping.

Christian Kuetbach
– Christian Kuetbach

2012-04-03 10:50:58 +00:00
Commented Apr 3, 2012 at 10:50 — Christian Kuetbach
– Christian Kuetbach, Commented Apr 3, 2012 at 10:50

Christian Kuetbach · Accepted Answer · 2012-04-03 09:51:00Z

2

Yes you can. Add a attribute to your class and set it transient:

http://docs.jboss.org/hibernate/annotations/3.5/reference/en/html_single/#entity-mapping-property

you have to calculate and set the value yourself. You may use the @PostConstruct annotation.

answered Apr 3, 2012 at 9:51

Christian Kuetbach

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2 Comments

spuriosity Over a year ago

Does making it transient not mean that it will only be valid for the lifetime of the instance? This value needs to be saved as part of the cross-reference table. Also, in trying to think of where the getter and setter should be placed, would it be in the Person or Address object?

Christian Kuetbach Over a year ago

Ohh, then I misunderstood your question.

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