/** Get the names of the columns constrained by this criterion. */
@Override
public String[] getColumnsUsingProjection(Criteria subcriteria, String propertyName)
throws HibernateException {
// first look for a reference to a projection alias
final Projection projection = rootCriteria.getProjection();
String[] projectionColumns = null;
if (projection != null) {
projectionColumns =
(projection instanceof EnhancedProjection
? ((EnhancedProjection) projection)
.getColumnAliases(propertyName, 0, rootCriteria, this)
: projection.getColumnAliases(propertyName, 0));
}
if (projectionColumns == null) {
// it does not refer to an alias of a projection,
// look for a property
try {
return getColumns(propertyName, subcriteria);
} catch (HibernateException he) {
// not found in inner query , try the outer query
if (outerQueryTranslator != null) {
return outerQueryTranslator.getColumnsUsingProjection(subcriteria, propertyName);
} else {
throw he;
}
}
} else {
// it refers to an alias of a projection
return projectionColumns;
}
}
