/// <summary>
/// `JSON.MGET`
///
/// Returns an IEnumerable of the specified result type. Non-existing keys and non-existent paths are returnd as type default.
///
/// https://oss.redislabs.com/rejson/commands/#jsonmget
/// </summary>
/// <param name="db"></param>
/// <param name="keys">Keys where JSON objects are stored.</param>
/// <param name="path">The path of the JSON property that you want to return for each key. This is "root" by default.</param>
/// <param name="commandFlags">Optional command flags.</param>
/// <typeparam name="TResult">The type to deserialize the value as.</typeparam>
/// <returns>IEnumerable of TResult, non-existent paths/keys are returned as default(TResult).</returns>
public static async Task <IEnumerable <TResult> > JsonMultiGetAsync <TResult>(this IDatabaseAsync db,
RedisKey[] keys,
string path = ".", CommandFlags commandFlags = CommandFlags.None)
{
IEnumerable <TResult> CreateResult(RedisResult[] srs)
{
foreach (var sr in srs)
{
if (sr.IsNull)
{
yield return(default(TResult));
}
else
{
yield return(SerializerProxy.Deserialize <TResult>(sr));
}
}
}
return(CreateResult(await db.JsonMultiGetAsync(keys, path).ConfigureAwait(false)));
}
/// <summary>
/// `JSON.MGET`
///
/// Returns the values at `path` from multiple `key`s. Non-existing keys and non-existing paths are reported as null.
///
/// https://oss.redislabs.com/rejson/commands/#jsonmget
/// </summary>
/// <param name="db"></param>
/// <param name="keys">Keys where JSON objects are stored.</param>
/// <param name="path">The path of the JSON property that you want to return for each key. This is "root" by default.</param>
/// <param name="commandFlags">Optional command flags.</param>
/// <returns>Array of Bulk Strings, specifically the JSON serialization of the value at each key's path.</returns>
public static Task <RedisResult[]> JsonMultiGetAsync(this IDatabaseAsync db, string[] keys, string path = ".",
CommandFlags commandFlags = CommandFlags.None) =>
db.JsonMultiGetAsync(keys.Select(k => (RedisKey)k).ToArray(), path, commandFlags);
