Re: How to use SQL functions with parameters?

[Armin Waibel <ar...@apache.org>]

Hi Francesco,

the oql-support isn't fully implemented.
http://db.apache.org/ojb/status.html

Maybe it's possible to do a workaround by using the Criteria-API
http://db.apache.org/ojb/docu/guides/odmg-guide.html#no-oql
http://db.apache.org/ojb/docu/guides/query.html#subqueries

regards,
Armin


Francesco Martinelli wrote:
> Dear all,
> I need to filter a query using an SQL function.
> 
> In SQL this would be achieved with the following statement:
>     select * from myTable where key in (select * from myFunc(myParam))
> 
> I tried the same with ODB-ODBC, and this worked using the following query
> string:
>     String oqlQuery = "select myObject from " + myClass.getName() +
>         " where key IN (select * from myFunc(" + myParam.toString() + "))";
> 
> However it generated an error at the moment of binding the parameter using
> the following query string:
>     String oqlQuery = "select myObject from " + myClass.getName() +
>         " where key IN (select * from myFunc($1))";
> 
> After creating the qury with:
>       query.create(oqlQuery);
> 
> The error (QueryParameterCountInvalidException) was generated at the
> following line:
>       query.bind((Float)myParam);
> 
> Can anybody tell me if it is possible to use the query string in the
> second form?
> 
> Thank you,
> Francesco.
> 
> 
> 
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