static public PropertyInfo FindRefFieldInForeinEntity(Type whatFindType, Type whereFindType, Type reationTypeToFind, string nameToFind)
{
IEnumerable <PropertyInfo> whereEntityRefFields = AttrHelper.GetProperties(reationTypeToFind, whereFindType);
PropertyInfo whereEntityRefField = null;
if (nameToFind == null)
{
//nameToFind Can be null, then it is assumed that the foreinEntityRefField is the only one and matches the type (previously: by name with pk)
foreach (var p in whereEntityRefFields)
{
Type refType = (typeof(JManyToOne).Equals(reationTypeToFind) || typeof(JOneToOne).Equals(reationTypeToFind)) ? p.PropertyType : AttrHelper.GetGenericListArgType(p.PropertyType);
if (refType.Equals(whatFindType))
{
if (whereEntityRefField != null)
{
throw new Exception("Found more than one field referenced to this entity type");
}
whereEntityRefField = p;
}
}
}
else
{
//nameToFind Set explicitly, which is relevant if the table has several fields of the same type that refer to the same table
foreach (var p in whereEntityRefFields)
{
Type refType = (typeof(JManyToOne).Equals(reationTypeToFind) || typeof(JOneToOne).Equals(reationTypeToFind)) ? p.PropertyType : AttrHelper.GetGenericListArgType(p.PropertyType);
if (refType.Equals(whatFindType))
{
if (
((typeof(JManyToOne).Equals(reationTypeToFind) || typeof(JOneToMany).Equals(reationTypeToFind)) && (p.Name).Equals(nameToFind))
||
(typeof(JManyToMany).Equals(reationTypeToFind) && (p.Name).Equals(nameToFind))
||
(typeof(JOneToOne).Equals(reationTypeToFind) && (p.Name).Equals(nameToFind))
)//todo
{
whereEntityRefField = p;
break;
}
}
}
}
return(whereEntityRefField);
}
