Hi,
First of all thanks for your clarification.
Currently we are evaluating ODMG OQL implementation facilities and we met
some other complications. If problem with equal expression described in my
last letter will be resolved, we will run into another one: Suppose we have
Customers and Salespeople objects, each with 'city' property and we want to
load all salespeople whose clients are located in the same city (these
object does not contain collection of each other). According ODMG OQL
standards we can write something like this:
OQLQuery query = odmg.newOQLQuery();
query.create("select from sale in " + Customers.class.getName() +
", sale in Salespeople.class.getName() " +
" where sale.city = height.city");
query.execute();
When we tried to execute above OQL statement we got
'java.lang.NullPointerException' exception with text: 'line 1: unexpected
token: in'.
After analyzing oql-ojb.g grammar file we found that 'from' clause doesn't
support object aliases at all.
It means that we have not possibility to use multi tables in query and
accordingly operations with joins.
Do you know if object aliases support will be implemented in OJB ODMG, and
if yes, can you say approximately when it will be done?
Is there any other way to resolve this issue using only ODMG API?
Thanks,
Nick
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