protected override async Task <object[]> GetItemById(long id)
{
var redisId = GetRedisID(id);
var db = RedisDatabase.GetDatabase();
return(ConvertToTypedRow(await db.ListRangeAsync(redisId)));
}
private Task <IEnumerable <object[]> > GetRowsFromIndex(RedisKey indexKey)
{
var db = RedisDatabase.GetDatabase();
return(db.SetMembersAsync(indexKey).ContinueWith(
(labelledKeysTask) =>
{
var labelledKeys = labelledKeysTask.Result.Select(k => (long)k);
return labelledKeys.Select(k => ConvertToTypedRow(db.ListRange(GetRedisID(k))));
}));
}
public override async Task AddUnlabelledRow(object[] unlabelled)
{
long id = dataFormat.GetID(unlabelled);
RedisKey idKey = GetRedisID(id);
IEnumerable <RedisValue> featureValues = unlabelled.Select(d => (RedisValue)(d.ToString()));
var db = RedisDatabase.GetDatabase();
long listLength = await db.ListRightPushAsync(idKey, featureValues.ToArray());
await db.SetAddAsync(GetUnlabelledIndexKey(), id);
}
public override async Task AddLabelledRow(object[] labelled)
{
long id = dataFormat.GetID(labelled);
//we assume by convention that ID is the first element in the array
RedisKey idKey = GetRedisID(id);
//the remaining information is the list of feature values
IEnumerable <RedisValue> featureValues = labelled.Select(d => (RedisValue)(d.ToString()));
var db = RedisDatabase.GetDatabase();
//create a list using ListRightPush to store the data
long listLength = await db.ListRightPushAsync(idKey, featureValues.ToArray());
await db.SetAddAsync(GetLabelledIndexKey(), id);
}
public override async Task AddLabels(IDictionary <long, string> idLabelLookups)
{
var db = RedisDatabase.GetDatabase();
foreach (var kvp in idLabelLookups)
{
long id = kvp.Key;
string label = kvp.Value;
RedisKey idKey = GetRedisID(id);
await db.ListRightPushAsync(idKey, label);
await db.SetRemoveAsync(GetUnlabelledIndexKey(), id);
await db.SetAddAsync(GetLabelledIndexKey(), id);
}
}