public virtual IEnumerable <DataTable> Shard(IIdentifyShard identifier)
{
if (null == identifier)
{
throw new ArgumentNullException("identifier");
}
DataTable table = null;
string current = null;
foreach (var entry in this)
{
var id = identifier.IdentifyShard(entry);
if (null == table)
{
table = NewDataTable(id, entry);
}
if (id != current)
{
current = id;
if (0 != table.Rows.Count)
{
yield return(table);
}
table = NewDataTable(id, entry);
}
var row = NewDataRow(table, entry);
table.Rows.Add(row);
}
if (null == table)
{
yield break;
}
if (0 != table.Rows.Count)
{
yield return(table);
}
}
public virtual IEnumerable <DataShard> Shard(IIdentifyShard identifier)
{
if (null == identifier)
{
throw new ArgumentNullException("identifier");
}
DataShard shard = null;
string current = null;
foreach (var entry in this)
{
var id = identifier.IdentifyShard(entry);
if (null == shard)
{
shard = new DataShard(id);
}
if (id != current)
{
current = id;
if (0 != shard.Entries.Count)
{
yield return(shard);
}
shard = new DataShard(id);
}
shard.Entries.Add(entry);
}
if (null == shard)
{
yield break;
}
if (0 != shard.Entries.Count)
{
yield return(shard);
}
}