/// <summary>
/// Given a stream of relationships, returns a stream where applicable relationships are duplicated so that their
/// reverse alias also appears in the output stream.
/// Caution: remember to invert the from/to types, and the cardinality, as applicable.
/// </summary>
/// <param name="types"></param>
/// <returns></returns>
IEnumerable <EffectiveRelationship> EffectiveRelationships(IEnumerable <Entity> relationships)
{
foreach (var type in relationships)
{
bool isSingleEnum = false;
var card = _schemaManager.GetCardinality(type);
if (card == Aliases.ManyToOne)
{
var relToType = _schemaManager.GetRelationshipToType(type);
var entType = _schemaManager.GetEntityType(relToType).Alias;
isSingleEnum = entType == Aliases.EnumType;
}
var et = new EffectiveRelationship()
{
Type = type, Alias = type.Alias, IsSingleEnum = isSingleEnum
};
yield return(et);
if (type.ReverseAlias != null)
{
var rev = new EffectiveRelationship()
{
Type = type, Alias = type.ReverseAlias, IsReverseAlias = true, IsSingleEnum = false
};
yield return(rev);
}
}
}