/// <summary>This readIndexEntry method reads from the parent slot.</summary>
/// <remarks>This readIndexEntry method reads from the parent slot.</remarks>
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
/// <exception cref="Db4objects.Db4o.Ext.Db4oIOException"></exception>
public virtual object ReadIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer
buffer)
{
var payLoadOffSet = buffer.ReadInt();
var length = buffer.ReadInt();
if (payLoadOffSet == 0)
{
return null;
}
return buffer.ReadPayloadWriter(payLoadOffSet, length);
}
private ObjectHeader(ObjectContainerBase container, Db4objects.Db4o.Internal.ClassMetadata
classMetadata, IReadWriteBuffer reader)
{
int classID = reader.ReadInt();
_marshallerFamily = ReadMarshallerFamily(reader, classID);
classID = NormalizeID(classID);
_classMetadata = (classMetadata != null ? classMetadata : container.ClassMetadataForID
(classID));
// This check has been added to cope with defragment in debug mode: SlotDefragment#setIdentity()
// will trigger calling this constructor with a source db class metadata and a target db stream,
// thus _classMetadata==null. There may be a better solution, since this call is just meant to
// skip the object header.
_headerAttributes = SlotFormat().ReadHeaderAttributes((ByteArrayBuffer)reader);
}
public static MarshallerFamily ForConverterVersion(int n)
{
MarshallerFamily result = allVersions[0];
for (int i = 1; i < allVersions.Length; i++)
{
if (allVersions[i]._converterVersion > n)
{
return(result);
}
result = allVersions[i];
}
return(result);
}
private MarshallerFamily ReadMarshallerFamily(IReadWriteBuffer reader, int classID
)
{
bool marshallerAware = MarshallerAware(classID);
_handlerVersion = 0;
if (marshallerAware)
{
_handlerVersion = reader.ReadByte();
}
MarshallerFamily marshallerFamily = MarshallerFamily.Version(_handlerVersion);
return(marshallerFamily);
}
static MarshallerFamily()
{
allVersions = new MarshallerFamily[HandlerRegistry.HandlerVersion + 1];
allVersions[0] = new MarshallerFamily(0, 0, new ClassMarshaller0(), new FieldMarshaller0
(), new PrimitiveMarshaller0());
// LEGACY => before 5.4
allVersions[1] = new MarshallerFamily(ClassIndexesToBTrees_5_5.Version, 1, new ClassMarshaller1
(), new FieldMarshaller0(), new PrimitiveMarshaller1());
allVersions[2] = new MarshallerFamily(FieldIndexesToBTrees_5_7.Version, 2, new ClassMarshaller2
(), new FieldMarshaller1(), new PrimitiveMarshaller1());
for (var i = 3; i < allVersions.Length; i++)
{
allVersions[i] = LatestFamily(i);
}
}
static MarshallerFamily()
{
allVersions = new MarshallerFamily[HandlerRegistry.HandlerVersion + 1];
allVersions[0] = new MarshallerFamily(0, 0, new ClassMarshaller0(), new FieldMarshaller0
(), new PrimitiveMarshaller0());
// LEGACY => before 5.4
allVersions[1] = new MarshallerFamily(ClassIndexesToBTrees_5_5.Version, 1, new ClassMarshaller1
(), new FieldMarshaller0(), new PrimitiveMarshaller1());
allVersions[2] = new MarshallerFamily(FieldIndexesToBTrees_5_7.Version, 2, new ClassMarshaller2
(), new FieldMarshaller1(), new PrimitiveMarshaller1());
for (int i = 3; i < allVersions.Length; i++)
{
allVersions[i] = LatestFamily(i);
}
}
private ObjectHeader(ObjectContainerBase container, Db4objects.Db4o.Internal.ClassMetadata
classMetadata, IReadWriteBuffer reader)
{
int classID = reader.ReadInt();
_marshallerFamily = ReadMarshallerFamily(reader, classID);
classID = NormalizeID(classID);
_classMetadata = (classMetadata != null ? classMetadata : container.ClassMetadataForID
(classID));
// This check has been added to cope with defragment in debug mode: SlotDefragment#setIdentity()
// will trigger calling this constructor with a source db class metadata and a target db stream,
// thus _classMetadata==null. There may be a better solution, since this call is just meant to
// skip the object header.
_headerAttributes = SlotFormat().ReadHeaderAttributes((ByteArrayBuffer)reader);
}
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
public override object Read(MarshallerFamily mf, StatefulBuffer buffer, bool redirect
)
{
return mf._primitive.ReadShort(buffer);
}
public object ReadIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer buffer)
{
return ReadFrom(buffer);
}
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
public object ReadIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer statefulBuffer
)
{
return ReadIndexEntry(statefulBuffer.Transaction().Context(), statefulBuffer);
}
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
public override object Read(MarshallerFamily mf, StatefulBuffer writer, bool redirect
)
{
return mf._primitive.ReadInteger(writer);
}
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
/// <exception cref="Db4objects.Db4o.Ext.Db4oIOException"></exception>
public override object ReadIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer
buffer)
{
return buffer.Container().ReadWriterByAddress(buffer.Transaction(), buffer.ReadInt
(), buffer.ReadInt());
}
object IIndexableTypeHandler.ReadIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer buffer)
{
return ReadFrom(buffer);
}
public object ReadIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer statefulBuffer)
{
return new IndexEntry(statefulBuffer.ReadInt(), statefulBuffer.ReadLong());
}
/// <param name="mf"></param>
/// <param name="buffer"></param>
/// <param name="redirect"></param>
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
public virtual object Read(MarshallerFamily mf, StatefulBuffer buffer, bool redirect
)
{
return Read1(buffer);
}
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
public object ReadIndexEntryFromObjectSlot(MarshallerFamily mf, StatefulBuffer statefulBuffer
)
{
return Read(mf, statefulBuffer, true);
}