XmlObjectSerializerReadContextComplex.cs source code in C# .NET

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Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / Serialization / System / Runtime / Serialization / XmlObjectSerializerReadContextComplex.cs / 4 / XmlObjectSerializerReadContextComplex.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.Runtime.Serialization 
{
    using System; 
    using System.Collections; 
    using System.Diagnostics;
    using System.Globalization; 
    using System.IO;
    using System.Reflection;
    using System.Text;
    using System.Xml; 
    using DataContractDictionary = System.Collections.Generic.Dictionary;
    using System.Collections.Generic; 
    using System.Runtime.Serialization.Formatters; 

#if USE_REFEMIT 
    public class XmlObjectSerializerReadContextComplex : XmlObjectSerializerReadContext
#else
    internal class XmlObjectSerializerReadContextComplex : XmlObjectSerializerReadContext
#endif 
    {
        bool preserveObjectReferences; 
        protected IDataContractSurrogate dataContractSurrogate; 
        SerializationMode mode;
        SerializationBinder binder; 
        ISurrogateSelector surrogateSelector;
        FormatterAssemblyStyle assemblyFormat;
        Hashtable surrogateDataContracts;
        Hashtable dataContractTypeCache = new Hashtable(); 

        internal XmlObjectSerializerReadContextComplex(DataContractSerializer serializer, DataContract rootTypeDataContract) 
            : base(serializer, rootTypeDataContract) 
        {
            this.mode = SerializationMode.SharedContract; 
            this.preserveObjectReferences = serializer.PreserveObjectReferences;
            this.dataContractSurrogate = serializer.DataContractSurrogate;
        }
 
        internal XmlObjectSerializerReadContextComplex(NetDataContractSerializer serializer)
            : base(serializer) 
        { 
            this.mode = SerializationMode.SharedType;
            this.preserveObjectReferences = true; 
            this.binder = serializer.Binder;
            this.surrogateSelector = serializer.SurrogateSelector;
            this.assemblyFormat = serializer.AssemblyFormat;
        } 

        internal XmlObjectSerializerReadContextComplex(XmlObjectSerializer serializer, int maxItemsInObjectGraph, StreamingContext streamingContext, bool ignoreExtensionDataObject) 
            : base(serializer, maxItemsInObjectGraph, streamingContext, ignoreExtensionDataObject) 
        {
        } 

        internal override SerializationMode Mode
        {
            get { return mode; } 
        }
 
        internal override DataContract GetDataContract(int id, RuntimeTypeHandle typeHandle) 
        {
            DataContract dataContract = NetDataContractSerializer.GetDataContractFromSurrogateSelector(surrogateSelector, GetStreamingContext(), typeHandle, null /*type*/, ref surrogateDataContracts); 
            if (dataContract != null)
            {
                if (this.IsGetOnlyCollection && dataContract is SurrogateDataContract)
                { 
                    throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidDataContractException(SR.GetString(SR.SurrogatesWithGetOnlyCollectionsNotSupportedSerDeser,
                        DataContract.GetClrTypeFullName(dataContract.UnderlyingType)))); 
                } 
                return dataContract;
            } 

            return base.GetDataContract(id, typeHandle);
        }
 
        internal override DataContract GetDataContract(RuntimeTypeHandle typeHandle, Type type)
        { 
            DataContract dataContract = NetDataContractSerializer.GetDataContractFromSurrogateSelector(surrogateSelector, GetStreamingContext(), typeHandle, type, ref surrogateDataContracts); 
            if (dataContract != null)
            { 
                if (this.IsGetOnlyCollection && dataContract is SurrogateDataContract)
                {
                    throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidDataContractException(SR.GetString(SR.SurrogatesWithGetOnlyCollectionsNotSupportedSerDeser,
                        DataContract.GetClrTypeFullName(dataContract.UnderlyingType)))); 
                }
                return dataContract; 
            } 

            return base.GetDataContract(typeHandle, type); 
        }

#if USE_REFEMIT
        public override object InternalDeserialize(XmlReaderDelegator xmlReader, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle, string name, string ns) 
#else
        internal override object InternalDeserialize(XmlReaderDelegator xmlReader, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle, string name, string ns) 
#endif 
        {
            if (mode == SerializationMode.SharedContract) 
            {
                if (dataContractSurrogate == null)
                    return base.InternalDeserialize(xmlReader, declaredTypeID, declaredTypeHandle, name, ns);
                else 
                    return InternalDeserializeWithSurrogate(xmlReader, Type.GetTypeFromHandle(declaredTypeHandle), null /*surrogateDataContract*/, name, ns);
            } 
            else 
            {
                return InternalDeserializeInSharedTypeMode(xmlReader, declaredTypeID, Type.GetTypeFromHandle(declaredTypeHandle), name, ns); 
            }
        }

        internal override object InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, string name, string ns) 
        {
            if (mode == SerializationMode.SharedContract) 
            { 
                if (dataContractSurrogate == null)
                    return base.InternalDeserialize(xmlReader, declaredType, name, ns); 
                else
                    return InternalDeserializeWithSurrogate(xmlReader, declaredType, null /*surrogateDataContract*/, name, ns);
            }
            else 
            {
                return InternalDeserializeInSharedTypeMode(xmlReader, -1, declaredType, name, ns); 
            } 
        }
 
        internal override object InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, DataContract dataContract, string name, string ns)
        {
            if (mode == SerializationMode.SharedContract)
            { 
                if (dataContractSurrogate == null)
                    return base.InternalDeserialize(xmlReader, declaredType, dataContract, name, ns); 
                else 
                    return InternalDeserializeWithSurrogate(xmlReader, declaredType, dataContract, name, ns);
            } 
            else
            {
                return InternalDeserializeInSharedTypeMode(xmlReader, -1, declaredType, name, ns);
            } 
        }
 
        object InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, int declaredTypeID, Type declaredType, string name, string ns) 
        {
            object retObj = null; 
            if (TryHandleNullOrRef(xmlReader, declaredType, name, ns, ref retObj))
                return retObj;

            DataContract dataContract; 
            string assemblyName = attributes.ClrAssembly;
            string typeName = attributes.ClrType; 
            if (assemblyName != null && typeName != null) 
            {
                Assembly assembly; 
                Type type;
                dataContract = ResolveDataContractInSharedTypeMode(assemblyName, typeName, out assembly, out type);
                if (dataContract == null)
                { 
                    if (assembly == null)
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.AssemblyNotFound, assemblyName))); 
                    if (type == null) 
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.ClrTypeNotFound, assembly.FullName, typeName)));
                } 
                //Array covariance is not supported in XSD. If declared type is array, data is sent in format of base array
                if (declaredType != null && declaredType.IsArray)
                    dataContract = (declaredTypeID < 0) ? GetDataContract(declaredType) : GetDataContract(declaredTypeID, declaredType.TypeHandle);
            } 
            else
            { 
                if (assemblyName != null) 
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(XmlObjectSerializer.TryAddLineInfo(xmlReader, SR.GetString(SR.AttributeNotFound, Globals.SerializationNamespace, Globals.ClrTypeLocalName, xmlReader.NodeType, xmlReader.NamespaceURI, xmlReader.LocalName))));
                else if (typeName != null) 
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(XmlObjectSerializer.TryAddLineInfo(xmlReader, SR.GetString(SR.AttributeNotFound, Globals.SerializationNamespace, Globals.ClrAssemblyLocalName, xmlReader.NodeType, xmlReader.NamespaceURI, xmlReader.LocalName))));
                else if (declaredType == null)
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(XmlObjectSerializer.TryAddLineInfo(xmlReader, SR.GetString(SR.AttributeNotFound, Globals.SerializationNamespace, Globals.ClrTypeLocalName, xmlReader.NodeType, xmlReader.NamespaceURI, xmlReader.LocalName))));
                dataContract = (declaredTypeID < 0) ? GetDataContract(declaredType) : GetDataContract(declaredTypeID, declaredType.TypeHandle); 
            }
            return ReadDataContractValue(dataContract, xmlReader); 
        } 

        object InternalDeserializeWithSurrogate(XmlReaderDelegator xmlReader, Type declaredType, DataContract surrogateDataContract, string name, string ns) 
        {
            DataContract dataContract = surrogateDataContract ??
                GetDataContract(DataContractSurrogateCaller.GetDataContractType(dataContractSurrogate, declaredType));
            if (this.IsGetOnlyCollection && dataContract.UnderlyingType != declaredType) 
            {
                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidDataContractException(SR.GetString(SR.SurrogatesWithGetOnlyCollectionsNotSupportedSerDeser, 
                    DataContract.GetClrTypeFullName(declaredType)))); 
            }
            ReadAttributes(xmlReader); 
            string objectId = GetObjectId();
            object oldObj = InternalDeserialize(xmlReader, name, ns, ref dataContract);
            object obj = DataContractSurrogateCaller.GetDeserializedObject(dataContractSurrogate, oldObj, dataContract.UnderlyingType, declaredType);
            ReplaceDeserializedObject(objectId, oldObj, obj); 
            return obj;
        } 
 
        Type ResolveDataContractTypeInSharedTypeMode(string assemblyName, string typeName, out Assembly assembly)
        { 
            assembly = null;
            Type type = null;

            if (binder != null) 
                type = binder.BindToType(assemblyName, typeName);
            if (type == null) 
            { 
                XmlObjectDataContractTypeKey key = new XmlObjectDataContractTypeKey(assemblyName, typeName);
                XmlObjectDataContractTypeInfo dataContractTypeInfo = (XmlObjectDataContractTypeInfo)dataContractTypeCache[key]; 
                if (dataContractTypeInfo == null)
                {
                    if (assemblyName == Globals.MscorlibAssemblyName)
                    { 
                        assembly = Globals.TypeOfInt.Assembly;
                    } 
                    else if (assemblyFormat == FormatterAssemblyStyle.Full) 
                    {
                        assembly = Assembly.Load(assemblyName); 
                    }
                    else
                    {
                        assembly = Assembly.LoadWithPartialName(assemblyName); 
                        if (assembly == null)
                        { 
                            AssemblyName an = new AssemblyName(assemblyName); 
                            an.Version = null;
                            assembly = Assembly.LoadWithPartialName(an.FullName); 
                        }
                    }
                    if (assembly != null)
                        type = assembly.GetType(typeName); 

                    if (type != null) 
                    { 
                        dataContractTypeInfo = new XmlObjectDataContractTypeInfo(assembly, type);
                        lock (dataContractTypeCache) 
                        {
                            if (!dataContractTypeCache.ContainsKey(key))
                            {
                                dataContractTypeCache[key] = dataContractTypeInfo; 
                            }
                        } 
                    } 
                }
                else 
                {
                    assembly = dataContractTypeInfo.Assembly;
                    type = dataContractTypeInfo.Type;
                } 
            }
 
            return type; 
        }
 
        DataContract ResolveDataContractInSharedTypeMode(string assemblyName, string typeName, out Assembly assembly, out Type type)
        {
            type = ResolveDataContractTypeInSharedTypeMode(assemblyName, typeName, out assembly);
            if (type != null) 
            {
                return GetDataContract(type); 
            } 

            return null; 
        }

        protected override DataContract ResolveDataContractFromTypeName()
        { 
            if (mode == SerializationMode.SharedContract)
            { 
                return base.ResolveDataContractFromTypeName(); 
            }
            else 
            {
                if (attributes.ClrAssembly != null && attributes.ClrType != null)
                {
                    Assembly assembly; 
                    Type type;
                    return ResolveDataContractInSharedTypeMode(attributes.ClrAssembly, attributes.ClrType, out assembly, out type); 
                } 
            }
            return null; 
        }

        internal override void CheckIfTypeSerializable(Type memberType, bool isMemberTypeSerializable)
        { 
            if (mode == SerializationMode.SharedType)
            { 
                ISurrogateSelector surrogateSelectorNotUsed; 
                if (surrogateSelector != null && surrogateSelector.GetSurrogate(memberType, GetStreamingContext(), out surrogateSelectorNotUsed) != null)
                    return; 
            }
            else
            {
                if (dataContractSurrogate != null) 
                {
                    while (memberType.IsArray) 
                        memberType = memberType.GetElementType(); 
                    memberType = DataContractSurrogateCaller.GetDataContractType(dataContractSurrogate, memberType);
                    if (!DataContract.IsTypeSerializable(memberType)) 
                        throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidDataContractException(SR.GetString(SR.TypeNotSerializable, memberType)));
                    return;
                }
            } 

            base.CheckIfTypeSerializable(memberType, isMemberTypeSerializable); 
        } 

        internal override Type GetSurrogatedType(Type type) 
        {
            if (dataContractSurrogate == null)
            {
                return base.GetSurrogatedType(type); 
            }
            else 
            { 
                type = DataContract.UnwrapNullableType(type);
                Type surrogateType = DataContractSerializer.GetSurrogatedType(dataContractSurrogate, type); 
                if (this.IsGetOnlyCollection && surrogateType != type)
                {
                    throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidDataContractException(SR.GetString(SR.SurrogatesWithGetOnlyCollectionsNotSupportedSerDeser,
                        DataContract.GetClrTypeFullName(type)))); 
                }
                else 
                { 
                    return surrogateType;
                } 
            }
        }

#if USE_REFEMIT 
        public override int GetArraySize()
#else 
        internal override int GetArraySize() 
#endif
        { 
            return preserveObjectReferences ? attributes.ArraySZSize : -1;
        }

        class XmlObjectDataContractTypeInfo 
        {
            Assembly assembly; 
            Type type; 
            public XmlObjectDataContractTypeInfo(Assembly assembly, Type type)
            { 
                this.assembly = assembly;
                this.type = type;
            }
 
            public Assembly Assembly
            { 
                get 
                {
                    return this.assembly; 
                }
            }

            public Type Type 
            {
                get 
                { 
                    return this.type;
                } 
            }
        }

        class XmlObjectDataContractTypeKey 
        {
            string assemblyName; 
            string typeName; 
            public XmlObjectDataContractTypeKey(string assemblyName, string typeName)
            { 
                this.assemblyName = assemblyName;
                this.typeName = typeName;
            }
 
            public override bool Equals(object obj)
            { 
                if (object.ReferenceEquals(this, obj)) 
                    return true;
 
                XmlObjectDataContractTypeKey other = obj as XmlObjectDataContractTypeKey;
                if (other == null)
                    return false;
 
                if (this.assemblyName != other.assemblyName)
                    return false; 
 
                if (this.typeName != other.typeName)
                    return false; 

                return true;
            }
 
            public override int GetHashCode()
            { 
                int hashCode = 0; 
                if (this.assemblyName != null)
                    hashCode = this.assemblyName.GetHashCode(); 

                if (this.typeName != null)
                    hashCode ^= this.typeName.GetHashCode();
 
                return hashCode;
            } 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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