static async Task <World[]> LoadUncachedQueries(ConcurrentRandom random, int id, int i, int count, RawDb rawdb, World[] result)
{
using (var db = new NpgsqlConnection(rawdb._connectionString))
{
await db.OpenAsync();
var(cmd, idParameter) = rawdb.CreateReadCommand(db, random);
using (cmd)
{
Func <ICacheEntry, Task <CachedWorld> > create = async(entry) =>
{
return(await rawdb.ReadSingleRow(cmd));
};
var cacheKeys = _cacheKeys;
var key = cacheKeys[id];
idParameter.TypedValue = id;
for (; i < result.Length; i++)
{
var data = await rawdb._cache.GetOrCreateAsync <CachedWorld>(key, create);
result[i] = data;
id = random.Next(1, 10001);
idParameter.TypedValue = id;
key = cacheKeys[id];
}
}
}
return(result);
}
public async Task <World[]> LoadMultipleUpdatesRows(int count)
{
var random = new ConcurrentRandom();
var results = new World[count];
using (var db = new NpgsqlConnection(_connectionString))
{
await db.OpenAsync();
var(queryCmd, queryParameter) = CreateReadCommand(db, random);
using (queryCmd)
{
for (int i = 0; i < results.Length; i++)
{
results[i] = await ReadSingleRow(queryCmd);
queryParameter.TypedValue = random.Next(1, 10001);
}
}
using (var updateCmd = new NpgsqlCommand(BatchUpdateString.Query(count), db))
{
var ids = BatchUpdateString.Ids;
var randoms = BatchUpdateString.Randoms;
for (int i = 0; i < results.Length; i++)
{
var randomNumber = random.Next(1, 10001);
updateCmd.Parameters.Add(new NpgsqlParameter <int>(parameterName: ids[i], value: results[i].id));
updateCmd.Parameters.Add(new NpgsqlParameter <int>(parameterName: randoms[i], value: randomNumber));
results[i].randomNumber = randomNumber;
}
await updateCmd.ExecuteNonQueryAsync();
}
}
return(results);
}
public async Task <World[]> LoadMultipleQueriesRows(int count)
{
var random = new ConcurrentRandom();
var result = new World[count];
using (var db = new NpgsqlConnection(_connectionString))
{
await db.OpenAsync();
var(cmd, parameter) = CreateReadCommand(db, random);
using (cmd)
{
for (int i = 0; i < count; i++)
{
result[i] = await ReadSingleRow(cmd);
parameter.Value = random.Next(1, 10001);
}
}
}
return(result);
}
public Task <World[]> LoadCachedQueries(int count)
{
var result = new World[count];
var cacheKeys = _cacheKeys;
var cache = _cache;
var random = new ConcurrentRandom();
for (var i = 0; i < result.Length; i++)
{
var id = random.Next(1, 10001);
var key = cacheKeys[id];
var data = cache.Get <CachedWorld>(key);
if (data != null)
{
result[i] = data;
}
else
{
return(LoadUncachedQueries(random, id, i, count, this, result));
}
}
return(Task.FromResult(result));
public RawDb(ConcurrentRandom random, DbProviderFactory dbProviderFactory, IOptions <AppSettings> appSettings)
{
_random = random;
_dbProviderFactory = dbProviderFactory;
_connectionString = appSettings.Value.ConnectionString;
}
public EfDb(ConcurrentRandom random, ApplicationDbContext dbContext, IOptions <AppSettings> appSettings)
{
_random = random;
_dbContext = dbContext;
_useBatchUpdate = appSettings.Value.Database != DatabaseServer.PostgreSql;
}
