public bool RemoveById(ByteBuffer keyBytes, bool throwWhenNotFound)
{
ResetKeyPrefix();
if (_kvtr.Find(keyBytes) != FindResult.Exact)
{
if (throwWhenNotFound)
{
throw new BTDBException("Not found record to delete.");
}
return(false);
}
var valueBytes = _kvtr.GetValue();
_kvtr.EraseCurrent();
if (_hasSecondaryIndexes)
{
RemoveSecondaryIndexes(keyBytes, valueBytes);
}
_relationInfo.FreeContent(_transaction, valueBytes);
_modificationCounter.MarkModification();
return(true);
}
public void InternalDelete(object obj)
{
var o = (IDBObject)obj;
var oid = o.Oid;
var taken = false;
try
{
_keyValueTrProtector.Start(ref taken);
_keyValueTr.SetKeyPrefix(ObjectDB.AllObjectsPrefix);
var key = new byte[PackUnpack.LengthVUInt(oid)];
int ofs = 0;
PackUnpack.PackVUInt(key, ref ofs, oid);
if (_keyValueTr.FindExactKey(key))
{
_keyValueTr.EraseCurrent();
}
}
finally
{
if (taken)
{
_keyValueTrProtector.Stop();
}
}
_objCache.TryRemove(oid);
_dirtyObjSet.TryRemove(oid);
}
public bool Remove(TKey key)
{
var keyBytes = KeyToByteArray(key);
_modificationCounter++;
if (_keyValueTr.EraseCurrent(keyBytes))
{
NotifyRemoved();
return(true);
}
return(false);
}
public bool Remove(TKey key)
{
var keyBytes = KeyToByteArray(key);
_keyValueTrProtector.Start();
_modificationCounter++;
_keyValueTr.SetKeyPrefix(_prefix);
if (_keyValueTr.Find(keyBytes) != FindResult.Exact)
{
return(false);
}
_keyValueTr.EraseCurrent();
NotifyRemoved();
return(true);
}
public bool Remove(TKey key)
{
var keyBytes = KeyToByteArray(key);
_keyValueTrProtector.Start();
_modificationCounter++;
_keyValueTr.SetKeyPrefix(_prefix);
var found = _keyValueTr.FindExactKey(keyBytes);
if (found)
{
_keyValueTr.EraseCurrent();
NotifyRemoved();
}
return(found);
}
public void Delete(object @object)
{
if (@object == null)
{
throw new ArgumentNullException(nameof(@object));
}
var indirect = @object as IIndirect;
if (indirect != null)
{
if (indirect.Oid != 0)
{
Delete(indirect.Oid);
return;
}
Delete(indirect.ValueAsObject);
return;
}
var tableInfo = AutoRegisterType(@object.GetType());
DBObjectMetadata metadata;
if (_objSmallMetadata != null)
{
if (!_objSmallMetadata.TryGetValue(@object, out metadata))
{
_objSmallMetadata.Add(@object, new DBObjectMetadata(0, DBObjectState.Deleted));
return;
}
}
else if (_objBigMetadata != null)
{
if (!_objBigMetadata.TryGetValue(@object, out metadata))
{
_objBigMetadata.Add(@object, new DBObjectMetadata(0, DBObjectState.Deleted));
return;
}
}
else
{
return;
}
if (metadata.Id == 0 || metadata.State == DBObjectState.Deleted)
{
return;
}
metadata.State = DBObjectState.Deleted;
_keyValueTrProtector.Start();
_keyValueTr.SetKeyPrefix(ObjectDB.AllObjectsPrefix);
if (_keyValueTr.FindExactKey(BuildKeyFromOid(metadata.Id)))
{
_keyValueTr.EraseCurrent();
}
tableInfo.CacheSingletonContent(_transactionNumber + 1, null);
if (_objSmallCache != null)
{
_objSmallCache.Remove(metadata.Id);
}
else
{
_objBigCache?.Remove(metadata.Id);
}
_dirtyObjSet?.Remove(metadata.Id);
}
public void EraseCurrent()
{
LogSimpleOperation(KVReplayOperation.EraseCurrent);
_tr.EraseCurrent();
}
public void EraseCurrent()
{
EraseCurrentCount++;
_keyValueDBTransaction.EraseCurrent();
}
void DoRandomWork()
{
var opCounter = 0;
var random = new Random();
using (var stream = CreateTestStream())
//using (IKeyValueDB db = new KeyValueDBReplayProxy(new KeyValueDB(), new PositionLessStreamWriter(new PositionLessStreamProxy("btdb.log"))))
using (IKeyValueDB db = new KeyValueDB())
{
db.Open(stream, false);
IKeyValueDBTransaction tr = db.StartTransaction();
while (opCounter < 100000)
{
if (opCounter % 1000 == 0)
{
Console.WriteLine(string.Format("Operation {0}", opCounter));
Console.WriteLine(tr.CalculateStats().ToString());
}
opCounter++;
var action = random.Next(100);
if (action < 10)
{
if (action > 1)
{
//Console.WriteLine("Commit");
tr.Commit();
}
else
{
//Console.WriteLine("Rollback");
}
tr.Dispose();
tr = db.StartTransaction();
}
else if (action < 50 || tr.GetKeyIndex() < 0)
{
var key = new byte[random.Next(1, 1000)];
random.NextBytes(key);
//Console.WriteLine(string.Format("CreateKey {0}", key.Length));
tr.CreateKey(key);
}
else if (action < 60)
{
//Console.WriteLine("EraseCurrent");
tr.EraseCurrent();
}
else if (action < 65)
{
//Console.WriteLine("FindNextKey");
tr.FindNextKey();
}
else if (action < 70)
{
//Console.WriteLine("FindPreviousKey");
tr.FindPreviousKey();
}
else
{
var value = new byte[random.Next(1, 100000)];
random.NextBytes(value);
//Console.WriteLine(string.Format("SetValue {0}", value.Length));
tr.SetValue(value);
}
}
tr.Dispose();
}
}
