private void SetFields(ICriteriaQuery criteriaQuery)
{
//Persister is required, so let's use it as "initialized marker"
if (Persister != null)
{
return;
}
if (!(criteriaQuery is ISupportEntityProjectionCriteriaQuery entityProjectionQuery))
{
throw new ArgumentException(
$"Projecting to entities requires a '{criteriaQuery.GetType().FullName}' type to implement " +
$"{nameof(ISupportEntityProjectionCriteriaQuery)} interface.",
nameof(criteriaQuery));
}
var criteria = entityProjectionQuery.RootCriteria;
if (!Lazy)
{
entityProjectionQuery.RegisterEntityProjection(this);
}
if (_entityType == null)
{
_entityType = criteria.GetRootEntityTypeIfAvailable();
}
if (_entityAlias == null)
{
_entityAlias = criteria.Alias;
}
Persister = criteriaQuery.Factory.GetEntityPersister(_entityType.FullName) as IQueryable;
if (Persister == null)
{
throw new HibernateException($"Projecting to entities requires a '{typeof(IQueryable).FullName}' persister, '{_entityType.FullName}' does not have one.");
}
ICriteria subcriteria = criteria.GetCriteriaByAlias(_entityAlias);
if (subcriteria == null)
{
throw new HibernateException($"Criteria\\QueryOver alias '{_entityAlias}' for entity projection is not found.");
}
TableAlias = criteriaQuery.GetSQLAlias(
subcriteria,
Persister.IdentifierPropertyName ?? string.Empty);
ColumnAliasSuffix = BasicLoader.GenerateSuffix(criteriaQuery.GetIndexForAlias());
_identifierColumnAliases = Persister.GetIdentifierAliases(ColumnAliasSuffix);
_types = new IType[] { TypeFactory.ManyToOne(Persister.EntityName, true) };
}
