public static IRelationConfig Relation <T1, T2, TRelation>(this ITableConfig <T1, T2> table, Expression <Func <T1, TRelation> > expression, RelationFlags?flags = null)
{
var selector = RelationConfig.By(expression, flags);
var relation = table.GetRelation(selector);
if (relation == null)
{
relation = table.CreateRelation(selector);
}
return(relation);
}
public IEnumerable <IRelationConfig> GetRelations(IDatabase database, ITableConfig table, ITransactionSource transaction = null)
{
var properties = new EntityPropertyEnumerator(table.TableType);
foreach (var property in properties)
{
if (!RelationValidator.Validate(database, property))
{
continue;
}
var relation = Factories.Relation.Create(table, RelationConfig.By(property));
if (!RelationValidator.Validate(database, true, relation, transaction))
{
continue;
}
yield return(relation);
}
}
public IEnumerable <IRelationConfig> GetRelations <T1, T2>(IDatabase database, ITableConfig <T1, T2> table, ITransactionSource transaction = null)
{
var properties = new EntityPropertyEnumerator(table.LeftTable.TableType);
foreach (var property in properties)
{
var elementType = default(Type);
if (!RelationValidator.Validate(database, property, out elementType) || !typeof(T2).IsAssignableFrom(elementType))
{
continue;
}
var relation = Factories.Relation.Create(table.LeftTable, RelationConfig.By(property, Defaults.Relation.Flags | RelationFlags.ManyToMany));
if (!RelationValidator.Validate(database, true, relation, transaction))
{
continue;
}
yield return(relation);
}
}