小编Sam*_*iff的帖子

这是我面临的情景:

public abstract class Record { }

public abstract class TableRecord : Record { }

public abstract class LookupTableRecord : TableRecord { }

public sealed class UserRecord : LookupTableRecord { }

public abstract class DataAccessLayer<TRecord> : IDataAccessLayer<TRecord>
    where TRecord : Record, new() { }

public abstract class TableDataAccessLayer<TTableRecord> : DataAccessLayer<TTableRecord>, ITableDataAccessLayer<TTableRecord>
    where TTableRecord : TableRecord, new() { }

public abstract class LookupTableDataAccessLayer<TLookupTableRecord> : TableDataAccessLayer<TLookupTableRecord>, ILookupTableDataAccessLayer<TLookupTableRecord>
    where TLookupTableRecord : LookupTableRecord, new() { }

public sealed class UserDataAccessLayer : LookupTableDataAccessLayer<UserRecord> { } …