private static void SequenceRecords(DbUpdateGroup group)
{
if (group == null || group.Records.Count < 2)
{
return;
}
// check if we need extra record sequencing, for records in non-trivial topological groups
var extraSeqRecords = group.RecordsForExtraSequencing;
if (extraSeqRecords != null && extraSeqRecords.Count > 1)
{
AssignSubIndexes(extraSeqRecords);
}
// actually sort records by entity.TopologicalIndex, record.SubIndex, record.EntityName
switch (group.Order)
{
case DbUpdateOrder.Update:
case DbUpdateOrder.Delete:
case DbUpdateOrder.IsolatedDelete:
// direct order
group.Records.Sort((x, y) => RecordsSortComparer(x, y, 1));
break;
case DbUpdateOrder.Insert:
case DbUpdateOrder.IsolatedInsert:
// reverse topological order
group.Records.Sort((x, y) => RecordsSortComparer(x, y, -1));
break;
}
}
private DbUpdateGroup GetCreateUpdateGroup(DbUpdateOrder order)
{
var group = UpdateGroups.FirstOrDefault(g => g.Order == order);
if (group != null)
{
return(group);
}
group = new DbUpdateGroup(order);
UpdateGroups.Add(group);
return(group);
}
private void CreateTableGroups(DbModel dbModel, DbUpdateGroup group)
{
DbUpdateTableGroup currGroup = null;
foreach (var rec in group.Records)
{
if (currGroup == null || rec.EntityInfo != currGroup.Table.Entity)
{
var tbl = dbModel.GetTable(rec.EntityInfo.EntityType);
currGroup = new DbUpdateTableGroup(tbl, ToOperation(group.Order));
group.TableGroups.Add(currGroup);
}
currGroup.Records.Add(rec);
} //foreach rec
}
