}//method
object GetValue(EntityRecord record, EntityMemberInfo member)
{
var v = record.GetValueDirect(member);
if (v != null)
{
if (v == DBNull.Value)
{
return(null);
}
var rec = (EntityRecord)v;
return(rec.EntityInstance);
}
//retrieve entity
var targetPk = EntityKey.CreateSafe(_targetEntity.PrimaryKey, record.PrimaryKey.Values);
var targetRec = record.Session.GetRecord(targetPk);
if (targetRec == null)
{
record.SetValueDirect(member, DBNull.Value);
return(null);
}
record.SetValueDirect(member, targetRec);
if (targetRec.ByRefUserPermissions == null)
{
targetRec.ByRefUserPermissions = member.ByRefPermissions;
}
return(targetRec.EntityInstance);
}
//Helper method that can be used to create composite primary keys
/// <summary>Creates a primary key object for an entity identified by type. Use it for entity types with composite primary key, to create a key instance from
/// column values. The created key may be used in session.GetEntity() method as primary key parameter. </summary>
/// <typeparam name="TEntity">Entity type.</typeparam>
/// <param name="session">The entity session.</param>
/// <param name="values">Value(s) of the primary key columns.</param>
/// <returns>A primary key object.</returns>
public static EntityKey CreatePrimaryKey <TEntity>(this IEntitySession session, params object[] values)
{
var entSession = session as EntitySession;
var modelInfo = entSession.Context.App.Model;
var entInfo = modelInfo.GetEntityInfo(typeof(TEntity), true);
var key = EntityKey.CreateSafe(entInfo.PrimaryKey, values);
return(key);
}
