org.infinispan.protostream.impl

Interface BaseMarshallerDelegate<T>

All Known Implementing Classes:

EnumMarshallerDelegate, MessageMarshallerDelegate, RawProtobufMarshallerDelegate

public interface BaseMarshallerDelegate<T>

The marshallers (descendants of BaseMarshaller) do not have a uniform interface, so an extra layer of indirection is used to provide uniformity. A delegate object wraps the real marshaller and delegates actual marshalling to it, taking into account the specific interface differences for each kind of marshaller (EnumMarshaller, MessageMarshaller, RawProtobufMarshaller).

Since:

1.0

Method Summary

Modifier and Type	Method and Description
BaseMarshaller<T>	getMarshaller() Gets the wrapped marshaller.
void	marshall(FieldDescriptor fieldDescriptor, T value, ProtoStreamWriterImpl writer, RawProtoStreamWriter out) Marshalls an object.
T	unmarshall(FieldDescriptor fieldDescriptor, ProtoStreamReaderImpl reader, RawProtoStreamReader in) Unmarshalls an object.

Method Detail

getMarshaller

BaseMarshaller<T> getMarshaller()

Gets the wrapped marshaller.

Returns:

the wrapped marshaller instance

marshall

void marshall(FieldDescriptor fieldDescriptor,
              T value,
              ProtoStreamWriterImpl writer,
              RawProtoStreamWriter out)
       throws java.io.IOException

Marshalls an object.

Parameters:

fieldDescriptor - the FieldDescriptor of the field being marshalled or null if this is a top-level object

value - the value being marshalled (cannot be null)

writer - the ProtoStreamWriterImpl instance to use/re-use, if the specific marshaller type needs one; can be null in which case the delegate has to create a ProtoStreamWriterImpl instance itself based on the out parameter

out - the Protobuf tag output stream (cannot be null)

Throws:

java.io.IOException - if marshalling fails for some reason

unmarshall

T unmarshall(FieldDescriptor fieldDescriptor,
             ProtoStreamReaderImpl reader,
             RawProtoStreamReader in)
      throws java.io.IOException

Unmarshalls an object.

Parameters:

fieldDescriptor - the FieldDescriptor of the field being unmarshalled or null if this is a top-level object

reader - the ProtoStreamReaderImpl instance to use/re-use, if the specific marshaller type needs one; can be null in which case the delegate has to create a ProtoStreamReaderImpl instance itself based on the in parameter

in - the Protobuf tag input stream (cannot be null)

Throws:

java.io.IOException - if unmarshalling fails for some reason