A base class with useful implementation inheritence methods for creating marshallers of the OpenWire protocol
Beispiel #1
0
        public DataStructure TightUnmarshalNestedObject(BinaryReader dis, BooleanStream bs)
        {
            if (bs.ReadBoolean())
            {
                byte dataType = dis.ReadByte();

                BaseDataStreamMarshaller dsm  = GetDataStreamMarshallerForType(dataType);
                DataStructure            data = dsm.CreateObject();

                if (data.IsMarshallAware() && bs.ReadBoolean())
                {
                    dis.ReadInt32();
                    dis.ReadByte();

                    BooleanStream bs2 = new BooleanStream();
                    bs2.Unmarshal(dis);
                    dsm.TightUnmarshal(this, data, dis, bs2);
                }
                else
                {
                    dsm.TightUnmarshal(this, data, dis, bs);
                }

                return(data);
            }

            return(null);
        }
Beispiel #2
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        public int TightMarshalNestedObject1(DataStructure o, BooleanStream bs)
        {
            bs.WriteBoolean(o != null);
            if (null == o)
            {
                return(0);
            }

            if (o.IsMarshallAware())
            {
                MarshallAware ma       = (MarshallAware)o;
                byte[]        sequence = ma.GetMarshalledForm(this);
                bs.WriteBoolean(sequence != null);
                if (sequence != null)
                {
                    return(1 + sequence.Length);
                }
            }

            byte type = o.GetDataStructureType();

            if (type == 0)
            {
                throw new IOException("No valid data structure type for: " + o + " of type: " + o.GetType());
            }

            BaseDataStreamMarshaller dsm = GetDataStreamMarshallerForType(type);

            Tracer.Debug("Marshalling type: " + type + " with structure: " + o);
            return(1 + dsm.TightMarshal1(this, o, bs));
        }
Beispiel #3
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        public void TightMarshalNestedObject2(DataStructure o, BinaryWriter ds, BooleanStream bs)
        {
            if (!bs.ReadBoolean())
            {
                return;
            }

            byte type = o.GetDataStructureType();

            ds.Write(type);

            if (o.IsMarshallAware() && bs.ReadBoolean())
            {
                MarshallAware ma       = (MarshallAware)o;
                byte[]        sequence = ma.GetMarshalledForm(this);
                ds.Write(sequence, 0, sequence.Length);
            }
            else
            {
                BaseDataStreamMarshaller dsm = (BaseDataStreamMarshaller)dataMarshallers[type & 0xFF];
                if (dsm == null)
                {
                    throw new IOException("Unknown data type: " + type);
                }
                dsm.TightMarshal2(this, o, ds, bs);
            }
        }
Beispiel #4
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        public Object Unmarshal(BinaryReader dis)
        {
            // lets ignore the size of the packet
            if (!sizePrefixDisabled)
            {
                dis.ReadInt32();
            }

            // first byte is the type of the packet
            byte dataType = dis.ReadByte();

            if (dataType != NULL_TYPE)
            {
                BaseDataStreamMarshaller dsm = GetDataStreamMarshallerForType(dataType);

                Object data = dsm.CreateObject();

                if (tightEncodingEnabled)
                {
                    BooleanStream bs = new BooleanStream();
                    bs.Unmarshal(dis);
                    dsm.TightUnmarshal(this, data, dis, bs);
                    return(data);
                }
                else
                {
                    dsm.LooseUnmarshal(this, data, dis);
                    return(data);
                }
            }

            return(null);
        }
Beispiel #5
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        public void Marshal(Object o, BinaryWriter ds)
        {
            int size = 1;

            if (o != null)
            {
                DataStructure            c    = (DataStructure)o;
                byte                     type = c.GetDataStructureType();
                BaseDataStreamMarshaller dsm  = dataMarshallers[type & 0xFF];
                if (dsm == null)
                {
                    throw new IOException("Unknown data type: " + type);
                }

                if (tightEncodingEnabled)
                {
                    BooleanStream bs = new BooleanStream();
                    size += dsm.TightMarshal1(this, c, bs);
                    size += bs.MarshalledSize();

                    if (!sizePrefixDisabled)
                    {
                        ds.Write(size);
                    }

                    ds.Write(type);
                    bs.Marshal(ds);
                    dsm.TightMarshal2(this, c, ds, bs);
                }
                else
                {
                    BinaryWriter looseOut = ds;
                    MemoryStream ms       = null;
                    // If we are prefixing then we need to first write it to memory,
                    // otherwise we can write direct to the stream.
                    if (!sizePrefixDisabled)
                    {
                        ms       = new MemoryStream();
                        looseOut = new OpenWireBinaryWriter(ms);
                        looseOut.Write(size);
                    }

                    looseOut.Write(type);
                    dsm.LooseMarshal(this, c, looseOut);

                    if (!sizePrefixDisabled)
                    {
                        ms.Position = 0;
                        looseOut.Write((int)ms.Length - 4);
                        ds.Write(ms.GetBuffer(), 0, (int)ms.Length);
                    }
                }
            }
            else
            {
                ds.Write(size);
                ds.Write(NULL_TYPE);
            }
        }
Beispiel #6
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        public void addMarshaller(BaseDataStreamMarshaller marshaller)
        {
            byte type = marshaller.GetDataStructureType();

            lock (this.marshalLock)
            {
                dataMarshallers[type & 0xFF] = marshaller;
            }
        }
Beispiel #7
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        private BaseDataStreamMarshaller GetDataStreamMarshallerForType(byte dataType)
        {
            BaseDataStreamMarshaller dsm = this.dataMarshallers[dataType & 0xFF];

            if (null == dsm)
            {
                throw new IOException("Unknown data type: " + dataType);
            }
            return(dsm);
        }
Beispiel #8
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        public void LooseMarshalNestedObject(DataStructure o, BinaryWriter dataOut)
        {
            dataOut.Write(o != null);
            if (o != null)
            {
                byte type = o.GetDataStructureType();
                dataOut.Write(type);

                BaseDataStreamMarshaller dsm = GetDataStreamMarshallerForType(type);
                dsm.LooseMarshal(this, o, dataOut);
            }
        }
Beispiel #9
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        public DataStructure LooseUnmarshalNestedObject(BinaryReader dis)
        {
            if (dis.ReadBoolean())
            {
                byte dataType = dis.ReadByte();

                BaseDataStreamMarshaller dsm  = GetDataStreamMarshallerForType(dataType);
                DataStructure            data = dsm.CreateObject();
                dsm.LooseUnmarshal(this, data, dis);
                return(data);
            }

            return(null);
        }
Beispiel #10
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 public void LooseMarshalNestedObject(DataStructure o, BinaryWriter dataOut)
 {
     dataOut.Write(o != null);
     if (o != null)
     {
         byte type = o.GetDataStructureType();
         dataOut.Write(type);
         BaseDataStreamMarshaller dsm = (BaseDataStreamMarshaller)dataMarshallers[type & 0xFF];
         if (dsm == null)
         {
             throw new IOException("Unknown data type: " + type);
         }
         dsm.LooseMarshal(this, o, dataOut);
     }
 }
Beispiel #11
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 public DataStructure LooseUnmarshalNestedObject(BinaryReader dis)
 {
     if (dis.ReadBoolean())
     {
         byte dataType = dis.ReadByte();
         BaseDataStreamMarshaller dsm = (BaseDataStreamMarshaller)dataMarshallers[dataType & 0xFF];
         if (dsm == null)
         {
             throw new IOException("Unknown data type: " + dataType);
         }
         DataStructure data = dsm.CreateObject();
         dsm.LooseUnmarshal(this, data, dis);
         return(data);
     }
     else
     {
         return(null);
     }
 }
Beispiel #12
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        public Object Unmarshal(BinaryReader dis)
        {
            // lets ignore the size of the packet
            if (!sizePrefixDisabled)
            {
                dis.ReadInt32();
            }

            // first byte is the type of the packet
            byte dataType = dis.ReadByte();

            if (dataType != NULL_TYPE)
            {
                BaseDataStreamMarshaller dsm = dataMarshallers[dataType & 0xFF];
                if (dsm == null)
                {
                    throw new IOException("Unknown data type: " + dataType);
                }
                Tracer.Debug("Parsing type: " + dataType + " with: " + dsm);
                Object data = dsm.CreateObject();

                if (tightEncodingEnabled)
                {
                    BooleanStream bs = new BooleanStream();
                    bs.Unmarshal(dis);
                    dsm.TightUnmarshal(this, data, dis, bs);
                    return(data);
                }
                else
                {
                    dsm.LooseUnmarshal(this, data, dis);
                    return(data);
                }
            }
            else
            {
                return(null);
            }
        }
Beispiel #13
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        public void TightMarshalNestedObject2(DataStructure o, BinaryWriter ds, BooleanStream bs)
        {
            if (!bs.ReadBoolean())
            {
                return;
            }

            byte type = o.GetDataStructureType();

            ds.Write(type);

            if (o.IsMarshallAware() && bs.ReadBoolean())
            {
                MarshallAware ma       = (MarshallAware)o;
                byte[]        sequence = ma.GetMarshalledForm(this);
                ds.Write(sequence, 0, sequence.Length);
            }
            else
            {
                BaseDataStreamMarshaller dsm = GetDataStreamMarshallerForType(type);
                dsm.TightMarshal2(this, o, ds, bs);
            }
        }
Beispiel #14
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        public DataStructure TightUnmarshalNestedObject(BinaryReader dis, BooleanStream bs)
        {
            if (bs.ReadBoolean())
            {
                byte dataType = dis.ReadByte();
                BaseDataStreamMarshaller dsm = (BaseDataStreamMarshaller)dataMarshallers[dataType & 0xFF];
                if (dsm == null)
                {
                    throw new IOException("Unknown data type: " + dataType);
                }
                DataStructure data = dsm.CreateObject();

                if (data.IsMarshallAware() && bs.ReadBoolean())
                {
                    dis.ReadInt32();
                    dis.ReadByte();

                    BooleanStream bs2 = new BooleanStream();
                    bs2.Unmarshal(dis);
                    dsm.TightUnmarshal(this, data, dis, bs2);

                    // TODO: extract the sequence from the dis and associate it.
                    //                MarshallAware ma = (MarshallAware)data
                    //                ma.setCachedMarshalledForm(this, sequence);
                }
                else
                {
                    dsm.TightUnmarshal(this, data, dis, bs);
                }

                return(data);
            }
            else
            {
                return(null);
            }
        }
Beispiel #15
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 public void addMarshaller(BaseDataStreamMarshaller marshaller)
 {
     byte type = marshaller.GetDataStructureType();
     dataMarshallers[type & 0xFF] = marshaller;
 }