public int RemoveByPrimaryKeyPrefix(ByteBuffer keyBytesPrefix)
{
var keysToDelete = new List <ByteBuffer>();
var enumerator = new RelationPrimaryKeyEnumerator <T>(_transaction, _relationInfo, keyBytesPrefix, _modificationCounter);
while (enumerator.MoveNext())
{
keysToDelete.Add(enumerator.GetKeyBytes());
}
foreach (var key in keysToDelete)
{
StartWorkingWithPK();
if (_transaction.KeyValueDBTransaction.Find(key) != FindResult.Exact)
{
throw new BTDBException("Not found record to delete.");
}
var valueBytes = _transaction.KeyValueDBTransaction.GetValue();
if (_hasSecondaryIndexes)
{
RemoveSecondaryIndexes(key, valueBytes);
}
if (_relationInfo.NeedImplementFreeContent())
{
_relationInfo.FreeContent(_transaction, valueBytes);
}
}
return(RemovePrimaryKeysByPrefix(keyBytesPrefix));
}
void BuildRemoveByMethod(MethodInfo method, IILMethod reqMethod, Type relationDBManipulatorType)
{
var writerLoc = reqMethod.Generator.DeclareLocal(typeof(ByteBufferWriter));
reqMethod.Generator.Newobj(() => new ByteBufferWriter());
reqMethod.Generator.Stloc(writerLoc);
Action <IILGen> pushWriter = il => il.Ldloc(writerLoc);
var isPrefixBased = method.ReturnType == typeof(int); //returns number of removed items
if (isPrefixBased)
{
WriteShortPrefixIl(reqMethod.Generator, pushWriter, _relationInfo.Prefix);
}
else
{
//ByteBufferWriter.WriteVUInt32(RelationInfo.Id);
WriteIdIl(reqMethod.Generator, pushWriter, (int)_relationInfo.Id);
}
var primaryKeyFields = _relationInfo.ClientRelationVersionInfo.GetPrimaryKeyFields();
var count = SaveMethodParameters(reqMethod.Generator, method.Name, method.GetParameters(), method.GetParameters().Length,
_relationInfo.ApartFields, primaryKeyFields, writerLoc);
if (!isPrefixBased && count != primaryKeyFields.Count)
{
throw new BTDBException($"Number of parameters in {method.Name} does not match primary key count {primaryKeyFields.Count}.");
}
//call manipulator.RemoveBy_
reqMethod.Generator
.Ldarg(0); //manipulator
//call byteBuffer.data
var dataGetter = typeof(ByteBufferWriter).GetProperty("Data").GetGetMethod(true);
reqMethod.Generator.Ldloc(writerLoc).Callvirt(dataGetter);
if (isPrefixBased)
{
if (AllKeyPrefixesAreSame(_relationInfo.ClientRelationVersionInfo, count) && !_relationInfo.NeedImplementFreeContent())
{
reqMethod.Generator.Callvirt(relationDBManipulatorType.GetMethod("RemoveByKeyPrefixWithoutIterate"));
}
else
{
reqMethod.Generator.Callvirt(relationDBManipulatorType.GetMethod("RemoveByPrimaryKeyPrefix"));
}
}
else
{
reqMethod.Generator.LdcI4(ShouldThrowWhenKeyNotFound(method.Name, method.ReturnType) ? 1 : 0);
reqMethod.Generator.Callvirt(relationDBManipulatorType.GetMethod("RemoveById"));
if (method.ReturnType == typeof(void))
{
reqMethod.Generator.Pop();
}
}
}
