/// <summary>
/// Get field with builder.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="fieldName"></param>
/// <param name="builder"></param>
/// <returns></returns>
public T Field <T>(string fieldName, PortableBuilderImpl builder)
{
IPortableTypeDescriptor desc = _marsh.Descriptor(true, _typeId);
InitializeFields();
int fieldId = PortableUtils.FieldId(_typeId, fieldName, desc.NameConverter, desc.Mapper);
int pos;
if (_fields.TryGetValue(fieldId, out pos))
{
if (builder != null)
{
// Read in scope of build process.
T res;
if (!builder.CachedField(pos, out res))
{
res = Field0 <T>(pos, builder);
builder.CacheField(pos, res);
}
return(res);
}
return(Field0 <T>(pos, null));
}
return(default(T));
}
/// <summary>
/// Set new builder.
/// </summary>
/// <param name="builder">Builder.</param>
/// <returns>Previous builder.</returns>
internal PortableBuilderImpl Builder(PortableBuilderImpl builder)
{
PortableBuilderImpl ret = _builder;
_builder = builder;
return(ret);
}
/// <summary>
/// Gets field value on the given object.
/// </summary>
/// <param name="pos">Position.</param>
/// <param name="builder">Builder.</param>
/// <returns>Field value.</returns>
private T Field0 <T>(int pos, PortableBuilderImpl builder)
{
IPortableStream stream = new PortableHeapStream(_data);
stream.Seek(pos, SeekOrigin.Begin);
return(_marsh.Unmarshal <T>(stream, PortableMode.ForcePortable, builder));
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="portables">Portables.</param>
/// <param name="parent">Parent builder.</param>
/// <param name="obj">Initial portable object.</param>
/// <param name="desc">Type descriptor.</param>
public PortableBuilderImpl(PortablesImpl portables, PortableBuilderImpl parent,
PortableUserObject obj, IPortableTypeDescriptor desc)
{
_portables = portables;
_parent = parent ?? this;
_obj = obj;
_desc = desc;
_hashCode = obj.GetHashCode();
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="marsh">Marshaller.</param>
/// <param name="descs">Descriptors.</param>
/// <param name="stream">Input stream.</param>
/// <param name="mode">The mode.</param>
/// <param name="builder">Builder.</param>
public PortableReaderImpl
(PortableMarshaller marsh,
IDictionary <long, IPortableTypeDescriptor> descs,
IPortableStream stream,
PortableMode mode,
PortableBuilderImpl builder)
{
_marsh = marsh;
_descs = descs;
_mode = mode;
_builder = builder;
Stream = stream;
}
/// <summary>
/// Process child builder.
/// </summary>
/// <param name="outStream">Output stream.</param>
/// <param name="builder">Builder.</param>
internal void ProcessBuilder(IPortableStream outStream, PortableBuilderImpl builder)
{
PortableHeapStream inStream = new PortableHeapStream(builder._obj.Data);
inStream.Seek(builder._obj.Offset, SeekOrigin.Begin);
// Builder parent context might be null only in one case: if we never met this group of
// builders before. In this case we set context to their parent and track it. Context
// cleanup will be performed at the very end of build process.
if (builder._parent._ctx == null || builder._parent._ctx.Closed)
{
builder._parent._ctx = new Context(_parent._ctx);
}
builder.Mutate(inStream, outStream as PortableHeapStream, builder._desc,
builder._hashCode, builder._vals);
}
internal void Write <T>(T obj, object handler)
{
// Apply detach mode if needed.
PortableHandleDictionary <object, long> oldHnds = null;
bool resetDetach = false;
if (_detach)
{
_detach = false;
_detachMode = true;
resetDetach = true;
oldHnds = _hnds;
_hnds = null;
}
try
{
// Write null.
if (obj == null)
{
_stream.WriteByte(PortableUtils.HdrNull);
return;
}
if (_builder != null)
{
// Special case for portable object during build.
PortableUserObject portObj = obj as PortableUserObject;
if (portObj != null)
{
if (!WriteHandle(_stream.Position, portObj))
{
_builder.ProcessPortable(_stream, portObj);
}
return;
}
// Special case for builder during build.
PortableBuilderImpl portBuilder = obj as PortableBuilderImpl;
if (portBuilder != null)
{
if (!WriteHandle(_stream.Position, portBuilder))
{
_builder.ProcessBuilder(_stream, portBuilder);
}
return;
}
}
// Try writting as well-known type.
if (InvokeHandler(handler, handler as PortableSystemWriteDelegate, obj))
{
return;
}
Type type = obj.GetType();
IPortableTypeDescriptor desc = _marsh.Descriptor(type);
object typedHandler;
PortableSystemWriteDelegate untypedHandler;
if (desc == null)
{
typedHandler = null;
untypedHandler = PortableSystemHandlers.WriteHandler(type);
}
else
{
typedHandler = desc.TypedHandler;
untypedHandler = desc.UntypedHandler;
}
if (InvokeHandler(typedHandler, untypedHandler, obj))
{
return;
}
if (desc == null)
{
if (!type.IsSerializable)
{
// If neither handler, nor descriptor exist, and not serializable, this is an exception.
throw new PortableException("Unsupported object type [type=" + type +
", object=" + obj + ']');
}
Write(new SerializableObjectHolder(obj));
return;
}
int pos = _stream.Position;
// Dealing with handles.
if (!(desc.Serializer is IPortableSystemTypeSerializer) && WriteHandle(pos, obj))
{
return;
}
// Write header.
_stream.WriteByte(PortableUtils.HdrFull);
_stream.WriteBool(desc.UserType);
_stream.WriteInt(desc.TypeId);
_stream.WriteInt(obj.GetHashCode());
// Skip length as it is not known in the first place.
_stream.Seek(8, SeekOrigin.Current);
// Preserve old frame.
int oldTypeId = _curTypeId;
IPortableNameMapper oldConverter = _curConverter;
IPortableIdMapper oldMapper = _curMapper;
IPortableMetadataHandler oldMetaHnd = _curMetaHnd;
bool oldRaw = _curRaw;
long oldRawPos = _curRawPos;
// Push new frame.
_curTypeId = desc.TypeId;
_curConverter = desc.NameConverter;
_curMapper = desc.Mapper;
_curMetaHnd = desc.MetadataEnabled ? _marsh.MetadataHandler(desc) : null;
_curRaw = false;
_curRawPos = 0;
// Write object fields.
desc.Serializer.WritePortable(obj, this);
// Calculate and write length.
int retPos = _stream.Position;
_stream.Seek(pos + 10, SeekOrigin.Begin);
int len = retPos - pos;
_stream.WriteInt(len);
if (_curRawPos != 0)
{
// When set, it is difference between object head and raw position.
_stream.WriteInt((int)(_curRawPos - pos));
}
else
{
// When no set, it is equal to object length.
_stream.WriteInt(len);
}
_stream.Seek(retPos, SeekOrigin.Begin);
// 13. Collect metadata.
if (_curMetaHnd != null)
{
IDictionary <string, int> meta = _curMetaHnd.OnObjectWriteFinished();
if (meta != null)
{
SaveMetadata(_curTypeId, desc.TypeName, desc.AffinityKeyFieldName, meta);
}
}
// Restore old frame.
_curTypeId = oldTypeId;
_curConverter = oldConverter;
_curMapper = oldMapper;
_curMetaHnd = oldMetaHnd;
_curRaw = oldRaw;
_curRawPos = oldRawPos;
}
finally
{
// Restore handles if needed.
if (resetDetach)
{
// Add newly recorded handles without overriding already existing ones.
if (_hnds != null)
{
if (oldHnds == null)
{
oldHnds = _hnds;
}
else
{
oldHnds.Merge(_hnds);
}
}
_hnds = oldHnds;
_detachMode = false;
}
}
}
/// <summary>
/// Internal builder creation routine.
/// </summary>
/// <param name="parent">Parent builder.</param>
/// <param name="obj">Portable object.</param>
/// <param name="desc">Type descriptor.</param>
/// <returns>Builder.</returns>
private PortableBuilderImpl Builder0(PortableBuilderImpl parent, PortableUserObject obj,
IPortableTypeDescriptor desc)
{
return(new PortableBuilderImpl(this, parent, obj, desc));
}
/// <summary>
/// Create child builder.
/// </summary>
/// <param name="parent">Parent builder.</param>
/// <param name="obj">Portable object.</param>
/// <returns></returns>
internal PortableBuilderImpl ChildBuilder(PortableBuilderImpl parent, PortableUserObject obj)
{
IPortableTypeDescriptor desc = _marsh.Descriptor(true, obj.TypeId());
return(Builder0(null, obj, desc));
}
/// <summary>
/// Unmarshal object.
/// </summary>
/// <param name="stream">Stream over underlying byte array with correct position.</param>
/// <param name="mode">The mode.</param>
/// <param name="builder">Builder.</param>
/// <returns>
/// Object.
/// </returns>
public T Unmarshal <T>(IPortableStream stream, PortableMode mode, PortableBuilderImpl builder)
{
return(new PortableReaderImpl(this, _idToDesc, stream, mode, builder).Deserialize <T>());
}
/// <summary>
/// Mutate portable object.
/// </summary>
/// <param name="inStream">Input stream with initial object.</param>
/// <param name="outStream">Output stream.</param>
/// <param name="desc">Portable type descriptor.</param>
/// <param name="hashCode">Hash code.</param>
/// <param name="vals">Values.</param>
internal void Mutate(
PortableHeapStream inStream,
PortableHeapStream outStream,
IPortableTypeDescriptor desc,
int hashCode,
IDictionary <string, PortableBuilderField> vals)
{
// Set correct builder to writer frame.
PortableBuilderImpl oldBuilder = _parent._ctx.Writer.Builder(_parent);
int streamPos = inStream.Position;
try
{
// Prepare fields.
IPortableMetadataHandler metaHnd = _portables.Marshaller.MetadataHandler(desc);
IDictionary <int, object> vals0;
if (vals == null || vals.Count == 0)
{
vals0 = EmptyVals;
}
else
{
vals0 = new Dictionary <int, object>(vals.Count);
foreach (KeyValuePair <string, PortableBuilderField> valEntry in vals)
{
int fieldId = PortableUtils.FieldId(desc.TypeId, valEntry.Key, desc.NameConverter, desc.Mapper);
if (vals0.ContainsKey(fieldId))
{
throw new IgniteException("Collision in field ID detected (change field name or " +
"define custom ID mapper) [fieldName=" + valEntry.Key + ", fieldId=" + fieldId + ']');
}
vals0[fieldId] = valEntry.Value.Value;
// Write metadata if: 1) it is enabled for type; 2) type is not null (i.e. it is neither
// remove marker, nor a field read through "GetField" method.
if (metaHnd != null && valEntry.Value.Type != null)
{
metaHnd.OnFieldWrite(fieldId, valEntry.Key, TypeId(valEntry.Value.Type));
}
}
}
// Actual processing.
Mutate0(_parent._ctx, inStream, outStream, true, hashCode, vals0);
// 3. Handle metadata.
if (metaHnd != null)
{
IDictionary <string, int> meta = metaHnd.OnObjectWriteFinished();
if (meta != null)
{
_parent._ctx.Writer.SaveMetadata(desc.TypeId, desc.TypeName, desc.AffinityKeyFieldName, meta);
}
}
}
finally
{
// Restore builder frame.
_parent._ctx.Writer.Builder(oldBuilder);
inStream.Seek(streamPos, SeekOrigin.Begin);
}
}
