/// <summary>
/// Given a list of Models with ShardKey keys, returns a distinct list of shard Ids, except for the shard Id specified.
/// Useful for querying foreign shards after the primary shard has returned results.
/// </summary>
/// <param name="shardId"></param>
/// <param name="records">The list of models to evaluate.</param>
/// <returns>A ShardsValues collection, with the shards listed and values not set.</returns>
public static ShardsValues ShardListForeign <TModel>(short shardId, IList <TModel> records) where TModel : IKeyedModel <TRecord, TChild, TGrandChild, TGreatGrandChild>
{
var result = new ShardsValues();
foreach (var record in records)
{
if (!record.Key.ShardId.Equals(shardId) && !result.Shards.ContainsKey(record.Key.ShardId))
{
result.Add(record.Key.ShardId);
}
}
return(result);
}
public static ShardsValues ShardListForeign(short shardId, IList <ShardKey <TRecord, TChild, TGrandChild, TGreatGrandChild> > records)
{
var result = new ShardsValues();
foreach (var record in records)
{
if (!record.ShardId.Equals(shardId) && !result.Shards.ContainsKey(record.ShardId))
{
result.Add(record.ShardId);
}
}
return(result);
}
/// <summary>
/// Given a list of Models with ShardKChild keys, returns a distinct list of shard Ids, except for the shard Id specified.
/// Useful for querying foreign shards after the primary shard has returned results.
/// </summary>
/// <param name="shardId">The shard id of the shard to exclude. This is typically the current shard and this function is used to determine if any records are foreign to it.</param>
/// <param name="records">The list of models to evaluate.</param>
/// <returns>A ShardsValues collection, with the shards listed. The values dictionary will be null.</returns>
public static ShardsValues ToShardsValues <TModel>(IList <IKeyedModel <TRecord, TChild, TGrandChild, TGreatGrandChild> > records) where TModel : IKeyedModel <TRecord, TChild, TGrandChild, TGreatGrandChild>
{
var result = new ShardsValues();
foreach (var record in records)
{
if (!result.Shards.ContainsKey(record.Key.ShardId))
{
result.Add(record.Key.ShardId);
}
}
return(result);
}