I would like to persist a class A, containing a HashMap m, containing strings. The use case is a really simple contsruction:
Code:
public class A {
Map m = new HashMap();
Long id;
...
public string getStrForMapId (Integer key) {
return (String) m.get (key);
}
public static A[] findAcontatingStr (string str) {
//query the DB
}
}
If I try to persist it exactly this way, the mapping itself is fine: hibernate creates
two tables. But the problem is findAcontatingStr method, as map's elements are not available in HQL, i.e. I can't do something like
Code:
"select A from A where A.m.elements() = :str"
And if I created a composite-element class containg just a string, the HQL query would be possible, but Hibernate would create
three tables instead of 2. This workaround looks to me really ugly, as I have to produce one unnecessary class, and one unnecessary table.
Do I miss the proper way of solving this use case with Hibernate?
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