/// <summary>
///
/// </summary>
/// <param name="q"></param>
/// <returns></returns>
public string AddFromCollection(QueryTranslator q)
{
IType collectionElementType = PropertyType;
if (collectionElementType == null)
{
throw new QueryException(string.Format("must specify 'elements' for collection valued property in from clause: {0}", path));
}
if (collectionElementType.IsEntityType)
{
// an association
IQueryableCollection collectionPersister = q.GetCollectionPersister(collectionRole);
IQueryable entityPersister = (IQueryable)collectionPersister.ElementPersister;
System.Type clazz = entityPersister.MappedClass;
string[] collectionElementColumns = CurrentColumns();
string elementName;
if (collectionPersister.IsOneToMany)
{
elementName = collectionName;
// allow index() function
q.DecoratePropertyMapping(elementName, collectionPersister);
}
else
{
// many to many
q.AddCollection(collectionName, collectionRole);
elementName = q.CreateNameFor(clazz);
string[] keyColumnNames = entityPersister.IdentifierColumnNames;
join.AddJoin(entityPersister.TableName, elementName, collectionElementColumns, keyColumnNames, joinType);
}
q.AddFrom(elementName, clazz, join);
currentPropertyMapping = new CollectionPropertyMapping(collectionPersister);
return(elementName);
}
else
{
// collection of values
q.AddFromCollection(collectionName, collectionRole, join);
return(collectionName);
}
}