private LevelDB.DB <string, string> GetTestDb([CallerMemberName] string name = null)
{
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
var db = new LevelDB.DB(options, $"/tmp/DBTests-{name}").Cast <string, string>();
db.Put("c", "3").Put("b", "2").Put("a", "1");
db.Put("l", "12").Put("m", "13").Put("n", "14");
db.Put("z", "26").Put("y", "25").Put("x", "24");
return(db);
}
public void Integers()
{
using var log = Log();
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
using LevelDB.DB <int, string> db = new LevelDB.DB(options, $"/tmp/DBTests-Integers").Cast <int, string>();
db.Put(1, "aaa").Put(2, "bbb").Put(3, "ccc");
db.Put(7, "ggg").Put(8, "hhh").Put(9, "iii");
db.Put(6, "fff").Put(5, "eee").Put(4, "ddd");
Assert.Equal(
"4=ddd;5=eee;6=fff;7=ggg",
string.Join(";", db.GetIterable().Range(4, 8).Select(kv => $"{kv.Key}={kv.Value}")));
}
public override bool AddChests(IEnumerable <long> mapids, string playerid)
{
// acquire the file this player is stored in, and the tag that represents said player
byte[] playeridbytes;
if (playerid == LOCAL_IDENTIFIER)
{
playeridbytes = Encoding.Default.GetBytes("~local_player");
}
else
{
playeridbytes = Encoding.Default.GetBytes(playerid);
}
byte[] playerdata = BedrockDB.Get(playeridbytes.ToArray());
var file = new NbtFile();
file.BigEndian = false;
file.LoadFromBuffer(playerdata, 0, playerdata.Length, NbtCompression.None);
var invtag = (NbtList)file.RootTag["Inventory"];
var success = PutChestsInInventory(invtag, mapids);
byte[] bytes = file.SaveToBuffer(NbtCompression.None);
BedrockDB.Put(playeridbytes, bytes);
return(success);
}
public override void Put(byte[] key, byte[] value)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
db.Put(key, value as byte[]);
}
public void PutToDB(LevelDB.DB db, byte[] key)
{
var snapshot = Helper.CreateSnapshot(db);
if (this.Value == null)
{//申请新的实例ID，然后初始化存储Map
var key_instMax = Helper.tagKey_InstanceMax;
var instid = db.Get(snapshot, key_instMax);
if (instid == null || instid.Length == 0)
{
instid = BitConverter.GetBytes((UInt64)1);
}
this.Value = instid;
this.db = db;
//刷新max
{
UInt64 v = BitConverter.ToUInt64(instid, 0);
v++;
instid = BitConverter.GetBytes((UInt64)v);
db.Put(key_instMax, instid);
}
//初始化字典数量
byte[] key_count = Helper.tagKey_MapCount.Concat(this.Value).ToArray();
db.Put(key_count, BitConverter.GetBytes((UInt64)0));
}
else
{//检查count是否存在，
byte[] key_count = Helper.tagKey_MapCount.Concat(this.Value).ToArray();
var count = db.Get(snapshot, key_count);
if (count == null || count.Length == 0)
{
throw new Exception("error map instance.");
}
}
db.Put(key, Helper.tagValue_Map.Concat(this.Value).ToArray());
}
public void Prefix()
{
using var log = Log();
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
using var db = new LevelDB.DB(options, $"/tmp/DBTests-Prefix").Cast <string, int>();
db
.Put("a", 1)
.Put("aa", 2)
.Put("ab", 3)
.Put("b", 4)
.Put("ba", 5)
.Put("bb", 6)
.Put("c", 7);
Assert.Equal(
"a=1;aa=2;ab=3",
string.Join(";", db.GetIterable().Prefix("a").Select(kv => $"{kv.Key}={kv.Value}")));
Assert.Equal(
"b=4;ab=3;aa=2",
string.Join(";", db.GetIterable().Reverse().Prefix("a").Select(kv => $"{kv.Key}={kv.Value}")));
Assert.Equal(
"b=4;ab=3;aa=2",
string.Join(";", db.GetIterable().Prefix("a").Reverse().Select(kv => $"{kv.Key}={kv.Value}")));
}