private List <IDbCommand> GetInsertCommands(Object obj, ColumnCollectionInfo dataInfo, CollectionInfo collectionInfo, IDbConnection connection)
{
List <IDbCommand> result = new List <IDbCommand>();
IEnumerable targets = collectionInfo.GetValue(obj);
if (targets != null)
{
foreach (var target in targets)
{
IDbCommand command = connection.CreateCommand();
command.CommandText = GetInsertStatement(obj, target, dataInfo, collectionInfo, command);
result.Add(command);
}
}
return(result);
}
private List <IDbCommand> GetUpdateCommands(Object obj, ColumnCollectionInfo dataInfo, CollectionInfo collectionInfo, IDbConnection conn)
{
List <IDbCommand> commands = new List <IDbCommand>();
IEnumerable colllectionValue = collectionInfo.GetValue(obj);
if (colllectionValue != null)
{
var newTargets = colllectionValue.Cast <Object>().ToList();
if (newTargets.Count == 0)
{
commands.Add(GetClearCollectionCommand(obj, dataInfo, collectionInfo, conn));
}
else
{
var targetDataInfo = ColumnCollectionInfo.GetInfo(collectionInfo.TargetType);
ColumnInfo targetPrimaryKeyInfo = targetDataInfo.PrimaryKeys.Values.OfType <ColumnInfo>().Single();
var oldPrimaryKeys = GetCollectionTargets(obj, dataInfo, collectionInfo, targetPrimaryKeyInfo.GetValue(newTargets.First()), conn);
foreach (var newTarget in newTargets)
{
if (!oldPrimaryKeys.Contains(targetPrimaryKeyInfo.GetValue(newTarget)))
{
IDbCommand command = conn.CreateCommand();
command.CommandText = GetInsertStatement(obj, newTarget, dataInfo, collectionInfo, command);
commands.Add(command);
}
}
var newPrimaryKeys = newTargets.Select(t => targetPrimaryKeyInfo.GetValue(t));
foreach (var primaryKey in oldPrimaryKeys)
{
if (newPrimaryKeys.Where(t => t.Equals(primaryKey)).Count() == 0)
{
commands.Add(GetClearCollectionCommand(obj, dataInfo, collectionInfo, conn, targetPrimaryKeyInfo, primaryKey));
}
}
}
}
return(commands);
}
