Best way to use OQL with PB

[Cl�vis Wichoski]

Hi,
I'm using PersistenceBroker and need use OQL only for selecting objects, 
then I will use OQLQueryImpl, only to make the Query object for me, but 
I have two issues in doubt:

1) Executing query with broker
...
OQLQueryImpl oql = new OQLQueryImpl(broker.getPBKey());
oql.create(sbOQL.toString());
Collection results = broker.getCollectionByQuery(oql.getQuery());
...
2) Executing query with OQLQueryImpl
...
OQLQueryImpl oql = new OQLQueryImpl(broker.getPBKey());
oql.create(sbOQL.toString());
ManageableCollection results = oql.execute();
...
Then the doubts are:
What is better approach issue 1, issue 2 or exists a better way?
Since I will use the PB for me the best is issue 1, but for future 
compatibility don't be better to have a class QueryByOQL like QueryBySQL 
or QueryByCriteria?

Is correct instancing OQLQueryImpl programmatically?
TIA
Cl�vis



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