I'm creating a new Class for which I'm using hibernate to persist. However, it is dependent on an already existing table in the DB (which does not use hibernate). To be more concrete:

Table: DEVICE (dev_id long, name varchar ....) : This is existing table.

Table: DATA (dev_id long, key long, value text) : This is my table.

The class for my table will look like:

class Data {
private long dev_id;
private Map values;
}

For the Map, I use something like:
<hibernate-mapping>
<class name="Data" table="DATA">
<map name="mappings" table="DATA">
<key column="DEV_ID"/>
<index column="KEY" type="string"/>
<element column="VALUE" type="string"/>
</map>
...

The question is how to map the dev_id column? It will be already existing in the legacy table (DEVICE). Also hibernate should *not* update DEVICE table. It should use only for association.
Finally the relation is on-to-many. One device can have many key-value pairs.

Any help will be appreciated.
Thanks
M

Should't it be <map-key> tag instead?