/// <exception cref="Db4objects.Db4o.Internal.FieldIndexException"></exception>
public override void AddFieldIndex(ObjectIdContextImpl context)
{
var transaction = (LocalTransaction)context.Transaction();
var localContainer = (LocalObjectContainer)transaction.Container
();
var oldSlot = transaction.IdSystem().CommittedSlot(context.ObjectId());
var savedOffset = context.Offset();
var db4oDatabaseIdentityID = context.ReadInt();
var uuid = context.ReadLong();
context.Seek(savedOffset);
var isnew = (oldSlot.IsNull());
if ((uuid == 0 || db4oDatabaseIdentityID == 0) && context.ObjectId() > 0 && !isnew)
{
var identityAndUUID = ReadDatabaseIdentityIDAndUUID
(localContainer, context.ClassMetadata(), oldSlot, false);
db4oDatabaseIdentityID = identityAndUUID.databaseIdentityID;
uuid = identityAndUUID.uuid;
}
if (db4oDatabaseIdentityID == 0)
{
db4oDatabaseIdentityID = localContainer.Identity().GetID(transaction);
}
if (uuid == 0)
{
uuid = localContainer.GenerateTimeStampId();
}
var writer = (StatefulBuffer)context.Buffer();
writer.WriteInt(db4oDatabaseIdentityID);
writer.WriteLong(uuid);
if (isnew)
{
AddIndexEntry(writer, uuid);
}
}
protected virtual void RebuildIndexForWriter(LocalObjectContainer container, StatefulBuffer
buffer, int objectId)
{
var objectHeader = new ObjectHeader(container, buffer);
var context = new ObjectIdContextImpl(container.SystemTransaction
(), buffer, objectHeader, objectId);
var classMetadata = context.ClassMetadata();
if (classMetadata.IsStruct())
{
// We don't keep version information for structs.
return;
}
if (classMetadata.SeekToField(container.SystemTransaction(), buffer, versionFieldMetadata
) != HandlerVersion.Invalid)
{
var version = ((long)versionFieldMetadata.Read(context));
if (version != 0)
{
var t = (LocalTransaction)container.SystemTransaction();
t.CommitTimestampSupport().Put(container.SystemTransaction(), objectId, version);
}
}
}