Question

I’ve seen a couple pages that come close to this, but I’m looking for a simpler answer.

I have an object FinancialStatementLine that can reference a Payment entity. I want to use HQL to find the FinancialStatementLine entities that match certain criteria but do not have an associated Payment object. My HQL statement looks like this:

var query = _Session.CreateQuery(
    @"select lines from FinancialStatementLine lines
        inner join fetch lines.Statement statement  
        where statement.FinancialStatementId := statementId
        and lines.Payment is null
        and length(lines.CheckNumber) > 0")
    .SetParameter("statementId", financialStatementId);

It seems that would be the answer, but I’m getting a NHibernate.Hql.Ast.ANTLR.QuerySyntaxException (Antlr.Runtime.NoViableAltException) and the only thing I can imagine that I’m doing wrong is trying to use the is null clause on an associated entity instead of a property.

What is the proper way to do this?

Answer 1

Don’t you have a syntax error in your HQL?

where statement.FinancialStatementId := statementId

should actually be:

where statement.FinancialStatementId = :statementId