void CreateSecondaryKeyInfo(List <Tuple <int, IList <SecondaryKeyAttribute> > > attributes,
Dictionary <uint, TableFieldInfo> primaryKeyFields,
RelationVersionInfo prevVersion)
{
_secondaryKeys = new Dictionary <uint, SecondaryKeyInfo>();
_secondaryKeysNames = new Dictionary <string, uint>();
var skIndexNames = attributes.SelectMany(t => t.Item2).Select(a => a.Name).Distinct();
foreach (var indexName in skIndexNames)
{
var indexFields = new List <Tuple <int, SecondaryKeyAttribute> >(); //fieldIndex, attribute
foreach (var kv in attributes)
{
var attr = kv.Item2.FirstOrDefault(a => a.Name == indexName);
if (attr == null)
{
continue;
}
indexFields.Add(Tuple.Create(kv.Item1, attr));
}
var orderedAttrs = indexFields.OrderBy(a => a.Item2.Order).ToList();
var info = new SecondaryKeyInfo
{
Name = indexName,
Fields = new List <FieldId>(),
Index = SelectSecondaryKeyIndex(indexName, prevVersion)
};
var usedPKFields = new Dictionary <uint, object>();
foreach (var attr in orderedAttrs)
{
for (uint i = 1; i <= attr.Item2.IncludePrimaryKeyOrder; i++)
{
usedPKFields.Add(i, null);
var pi = _primaryKeyFields.IndexOf(primaryKeyFields[i]);
info.Fields.Add(new FieldId(true, (uint)pi));
}
if (attr.Item1 < 0)
{
var pkOrder = (uint)-attr.Item1;
usedPKFields.Add(pkOrder, null);
var pi = _primaryKeyFields.IndexOf(primaryKeyFields[pkOrder]);
info.Fields.Add(new FieldId(true, (uint)pi));
}
else
{
info.Fields.Add(new FieldId(false, (uint)attr.Item1));
}
}
//fill all not present parts of primary key
foreach (var pk in primaryKeyFields)
{
if (!usedPKFields.ContainsKey(pk.Key))
{
info.Fields.Add(new FieldId(true, (uint)_primaryKeyFields.IndexOf(primaryKeyFields[pk.Key])));
}
}
_secondaryKeysNames[indexName] = info.Index;
_secondaryKeys[info.Index] = info;
}
}
uint ReadRelationVersions(uint relationIndex, string name, Dictionary <uint, RelationVersionInfo> relationVersions)
{
uint lastPersistedVersion = 0;
var relationInfoResolver = new RelationInfoResolver((ObjectDB)_tr.Owner);
var writer = new SpanWriter();
writer.WriteByteArrayRaw(ObjectDB.RelationVersionsPrefix);
writer.WriteVUInt32(relationIndex);
var prefix = writer.GetSpan().ToArray();
if (!_trkv.FindFirstKey(prefix))
{
return(lastPersistedVersion);
}
do
{
var keyReader = new SpanReader(_trkv.GetKey().Slice(prefix.Length));
var valueReader = new SpanReader(_trkv.GetValue());
lastPersistedVersion = keyReader.ReadVUInt32();
var relationVersionInfo = RelationVersionInfo.LoadUnresolved(ref valueReader, name);
relationVersionInfo.ResolveFieldHandlers(relationInfoResolver.FieldHandlerFactory);
relationVersions[lastPersistedVersion] = relationVersionInfo;
} while (_trkv.FindNextKey(prefix));
return(lastPersistedVersion);
}
uint ReadRelationVersions(uint relationIndex, string name, Dictionary <uint, RelationVersionInfo> relationVersions)
{
uint lastPersistedVersion = 0;
{
var relationInfoResolver = new RelationInfoResolver((ObjectDB)_tr.Owner);
var writer = new ByteBufferWriter();
writer.WriteByteArrayRaw(ObjectDB.RelationVersionsPrefix);
writer.WriteVUInt32(relationIndex);
_trkv.SetKeyPrefix(writer.Data);
if (!_trkv.FindFirstKey())
{
return(lastPersistedVersion);
}
var keyReader = new KeyValueDBKeyReader(_trkv);
var valueReader = new KeyValueDBValueReader(_trkv);
do
{
keyReader.Restart();
valueReader.Restart();
lastPersistedVersion = keyReader.ReadVUInt32();
relationVersions[lastPersistedVersion] = RelationVersionInfo.Load(valueReader,
relationInfoResolver.FieldHandlerFactory, name);
} while (_trkv.FindNextKey());
}
return(lastPersistedVersion);
}
public RelationVersionInfo(Dictionary <uint, TableFieldInfo> primaryKeyFields, //order -> info
List <Tuple <int, IList <SecondaryKeyAttribute> > > secondaryKeys, //positive: sec key field idx, negative: pk order, attrs
TableFieldInfo[] secondaryKeyFields,
TableFieldInfo[] fields, RelationVersionInfo prevVersion)
{
_primaryKeyFields = primaryKeyFields.OrderBy(kv => kv.Key).Select(kv => kv.Value).ToArray();
_secondaryKeyFields = secondaryKeyFields;
CreateSecondaryKeyInfo(secondaryKeys, primaryKeyFields, prevVersion);
_fields = fields;
}
internal static bool Equal(RelationVersionInfo a, RelationVersionInfo b)
{
//PKs
if (a._primaryKeyFields.Count != b._primaryKeyFields.Count)
{
return(false);
}
for (int i = 0; i < a._primaryKeyFields.Count; i++)
{
if (!TableFieldInfo.Equal(a._primaryKeyFields[i], b._primaryKeyFields[i]))
{
return(false);
}
}
//SKs
if (a._secondaryKeys.Count != b._secondaryKeys.Count)
{
return(false);
}
foreach (var key in a._secondaryKeys)
{
SecondaryKeyInfo bInfo;
if (!b._secondaryKeys.TryGetValue(key.Key, out bInfo))
{
return(false);
}
if (!SecondaryKeyInfo.Equal(key.Value, bInfo))
{
return(false);
}
}
//Fields
if (a._fields.Length != b._fields.Length)
{
return(false);
}
for (int i = 0; i < a._fields.Length; i++)
{
if (!TableFieldInfo.Equal(a._fields[i], b._fields[i]))
{
return(false);
}
}
return(true);
}
static void CheckThatPrimaryKeyHasNotChanged(string name, RelationVersionInfo info, RelationVersionInfo previousInfo)
{
var pkFields = info.GetPrimaryKeyFields();
var prevPkFields = previousInfo.GetPrimaryKeyFields();
if (pkFields.Count != prevPkFields.Count)
{
throw new BTDBException($"Change of primary key in relation '{name}' is not allowed. Field count {pkFields.Count} != {prevPkFields.Count}.");
}
var en = pkFields.GetEnumerator();
var pen = prevPkFields.GetEnumerator();
while (en.MoveNext() && pen.MoveNext())
{
if (!ArePrimaryKeyFieldsCompatible(en.Current.Handler, pen.Current.Handler))
{
throw new BTDBException($"Change of primary key in relation '{name}' is not allowed. Field '{en.Current.Name}' is not compatible.");
}
}
}
uint SelectSecondaryKeyIndex(string indexName, RelationVersionInfo prevVersion)
{
uint index = 1;
if (prevVersion != null)
{
if (prevVersion._secondaryKeysNames.TryGetValue(indexName, out index))
{
return(index);
}
index = 0;
while (prevVersion._secondaryKeys.ContainsKey(index))
{
index++;
}
}
while (_secondaryKeys.ContainsKey(index))
{
index++;
}
return(index); //use fresh one
}
void UpdateSecondaryKeys(IInternalObjectDBTransaction tr, RelationVersionInfo info, RelationVersionInfo previousInfo)
{
foreach (var prevIdx in previousInfo.SecondaryKeys.Keys)
{
if (!info.SecondaryKeys.ContainsKey(prevIdx))
{
DeleteSecondaryKey(tr.KeyValueDBTransaction, prevIdx);
}
}
var secKeysToAdd = new List <KeyValuePair <uint, SecondaryKeyInfo> >();
foreach (var sk in info.SecondaryKeys)
{
if (!previousInfo.SecondaryKeys.ContainsKey(sk.Key))
{
secKeysToAdd.Add(sk);
}
}
if (secKeysToAdd.Count > 0)
{
CalculateSecondaryKey(tr, secKeysToAdd);
}
}
public RelationInfo(uint id, string name, IRelationInfoResolver relationInfoResolver, Type interfaceType,
Type clientType, IInternalObjectDBTransaction tr)
{
_id = id;
_name = name;
_relationInfoResolver = relationInfoResolver;
_interfaceType = interfaceType;
_clientType = clientType;
ClientRelationVersionInfo = CreateVersionInfoByReflection();
LoadVersionInfos(tr.KeyValueDBTransaction);
ApartFields = FindApartFields(interfaceType, ClientRelationVersionInfo);
if (LastPersistedVersion > 0 && RelationVersionInfo.Equal(_relationVersions[LastPersistedVersion], ClientRelationVersionInfo))
{
_relationVersions[LastPersistedVersion] = ClientRelationVersionInfo;
ClientTypeVersion = LastPersistedVersion;
}
else
{
ClientTypeVersion = LastPersistedVersion + 1;
_relationVersions.Add(ClientTypeVersion, ClientRelationVersionInfo);
var writerk = new ByteBufferWriter();
writerk.WriteByteArrayRaw(ObjectDB.RelationVersionsPrefix);
writerk.WriteVUInt32(_id);
writerk.WriteVUInt32(ClientTypeVersion);
var writerv = new ByteBufferWriter();
ClientRelationVersionInfo.Save(writerv);
tr.KeyValueDBTransaction.SetKeyPrefix(ByteBuffer.NewEmpty());
tr.KeyValueDBTransaction.CreateOrUpdateKeyValue(writerk.Data, writerv.Data);
if (LastPersistedVersion > 0)
{
CheckThatPrimaryKeyHasNotChanged(name, ClientRelationVersionInfo, _relationVersions[LastPersistedVersion]);
UpdateSecondaryKeys(tr, ClientRelationVersionInfo, _relationVersions[LastPersistedVersion]);
}
}
_typeConvertorGenerator = tr.Owner.TypeConvertorGenerator;
}
static bool AllKeyPrefixesAreSame(RelationVersionInfo relationInfo, ushort count)
{
foreach (var sk in relationInfo.SecondaryKeys)
{
var skFields = sk.Value;
var idx = 0;
foreach (var field in skFields.Fields)
{
if (!field.IsFromPrimaryKey)
{
return(false);
}
if (field.Index != idx)
{
return(false);
}
if (++idx == count)
{
break;
}
}
}
return(true);
}
