Пример #1
0
        private MaterializeAtom ReadPropertyFromRawData(ClientPropertyAnnotation property)
        {
            MaterializeAtom    atom;
            DataServiceContext source = (DataServiceContext)base.Source;
            bool applyingChanges      = source.ApplyingChanges;

            try
            {
                source.ApplyingChanges = true;
                string   mime     = null;
                Encoding encoding = null;
                Type     type     = property.EntityCollectionItemType ?? property.NullablePropertyType;
                IList    results  = (IList)Activator.CreateInstance(typeof(List <>).MakeGenericType(new Type[] { type }));
                HttpProcessUtility.ReadContentType(base.ContentType, out mime, out encoding);
                using (Stream stream = base.GetResponseStream())
                {
                    if (property.PropertyType == typeof(byte[]))
                    {
                        int    contentLength = (int)base.ContentLength;
                        byte[] buffer        = null;
                        if (contentLength >= 0)
                        {
                            buffer = ReadByteArrayWithContentLength(stream, contentLength);
                        }
                        else
                        {
                            buffer = ReadByteArrayChunked(stream);
                        }
                        results.Add(buffer);
                        property.SetValue(this.entity, buffer, this.propertyName, false);
                    }
                    else
                    {
                        StreamReader reader = new StreamReader(stream, encoding);
                        object       obj2   = (property.PropertyType == typeof(string)) ? reader.ReadToEnd() : ClientConvert.ChangeType(reader.ReadToEnd(), property.PropertyType);
                        results.Add(obj2);
                        property.SetValue(this.entity, obj2, this.propertyName, false);
                    }
                }
                if (property.MimeTypeProperty != null)
                {
                    property.MimeTypeProperty.SetValue(this.entity, mime, null, false);
                }
                atom = MaterializeAtom.CreateWrapper(source, results);
            }
            finally
            {
                source.ApplyingChanges = applyingChanges;
            }
            return(atom);
        }
Пример #2
0
        internal static object ProjectionInitializeEntity(ODataEntityMaterializer materializer, MaterializerEntry entry, Type expectedType, Type resultType, string[] properties, Func <object, object, Type, object>[] propertyValues)
        {
            if (entry.Entry == null)
            {
                throw new NullReferenceException(System.Data.Services.Client.Strings.AtomMaterializer_EntryToInitializeIsNull(resultType.FullName));
            }
            if (!entry.EntityHasBeenResolved)
            {
                ProjectionEnsureEntryAvailableOfType(materializer, entry, resultType);
            }
            else if (!resultType.IsAssignableFrom(entry.ActualType.ElementType))
            {
                throw new InvalidOperationException(System.Data.Services.Client.Strings.AtomMaterializer_ProjectEntityTypeMismatch(resultType.FullName, entry.ActualType.ElementType.FullName, entry.Entry.Id));
            }
            object resolvedObject = entry.ResolvedObject;

            for (int i = 0; i < properties.Length; i++)
            {
                StreamDescriptor         descriptor;
                string                   propertyName = properties[i];
                ClientPropertyAnnotation annotation   = entry.ActualType.GetProperty(propertyName, materializer.ResponseInfo.IgnoreMissingProperties);
                object                   target       = propertyValues[i](materializer, entry.Entry, expectedType);
                ODataProperty            property     = (from p in entry.Entry.Properties
                                                         where p.Name == propertyName
                                                         select p).FirstOrDefault <ODataProperty>();
                if ((((((property == null) && (entry.NavigationLinks != null)) ? (from l in entry.NavigationLinks
                                                                                  where l.Name == propertyName
                                                                                  select l).FirstOrDefault <ODataNavigationLink>() : null) != null) || (property != null)) || entry.EntityDescriptor.TryGetNamedStreamInfo(propertyName, out descriptor))
                {
                    if (entry.ShouldUpdateFromPayload && (annotation.EdmProperty.Type.TypeKind() == EdmTypeKind.Entity))
                    {
                        materializer.Log.SetLink(entry, annotation.PropertyName, target);
                    }
                    if (entry.ShouldUpdateFromPayload)
                    {
                        if (!annotation.IsEntityCollection)
                        {
                            if (!annotation.IsPrimitiveOrComplexCollection)
                            {
                                annotation.SetValue(resolvedObject, target, annotation.PropertyName, false);
                            }
                        }
                        else
                        {
                            IEnumerable list = (IEnumerable)target;
                            DataServiceQueryContinuation continuation = materializer.nextLinkTable[list];
                            Uri            nextLink = (continuation == null) ? null : continuation.NextLinkUri;
                            ProjectionPlan plan     = (continuation == null) ? null : continuation.Plan;
                            materializer.MergeLists(entry, annotation, list, nextLink, plan);
                        }
                    }
                    else if (annotation.IsEntityCollection)
                    {
                        materializer.FoundNextLinkForUnmodifiedCollection(annotation.GetValue(entry.ResolvedObject) as IEnumerable);
                    }
                }
            }
            return(resolvedObject);
        }
Пример #3
0
        /// <summary>
        /// Gets or creates a collection property on the specified <paramref name="instance"/>.
        /// </summary>
        /// <param name="instance">Instance on which to get/create the collection.</param>
        /// <param name="property">Collection property on the <paramref name="instance"/>.</param>
        /// <param name="forLoadProperty">Is this collection being created for LoadProperty scenario.</param>
        /// <returns>
        /// The collection corresponding to the specified <paramref name="property"/>;
        /// never null.
        /// </returns>
        private object GetOrCreateCollectionProperty(object instance, ClientPropertyAnnotation property, bool forLoadProperty)
        {
            Debug.Assert(instance != null, "instance != null");
            Debug.Assert(property != null, "property != null");
            Debug.Assert(property.IsResourceSet, "property.IsEntityCollection has to be true - otherwise property isn't a collection");

            // NOTE: in V1, we would have instantiated nested objects before setting them.
            object result;

            result = property.GetValue(instance);

            if (result == null)
            {
                Type collectionType = property.PropertyType;

                // For backward compatibility we need to have different strategy of collection creation b/w
                // LoadProperty scenario versus regular collection creation scenario.
                if (forLoadProperty)
                {
                    if (BindingEntityInfo.IsDataServiceCollection(collectionType, this.MaterializerContext.Model))
                    {
                        Debug.Assert(WebUtil.GetDataServiceCollectionOfT(property.EntityCollectionItemType) != null, "DataServiceCollection<> must be available here.");

                        // new DataServiceCollection<property.EntityCollectionItemType>(null, TrackingMode.None)
                        result = Activator.CreateInstance(
                            WebUtil.GetDataServiceCollectionOfT(property.EntityCollectionItemType),
                            null,
                            TrackingMode.None);
                    }
                    else
                    {
                        // Try List<> first because that's what we did in V1/V2, but use the actual property type if it doesn't support List<>
                        Type listCollectionType = typeof(List <>).MakeGenericType(property.EntityCollectionItemType);
                        if (collectionType.IsAssignableFrom(listCollectionType))
                        {
                            collectionType = listCollectionType;
                        }

                        result = Activator.CreateInstance(collectionType);
                    }
                }
                else
                {
                    if (DSClient.PlatformHelper.IsInterface(collectionType))
                    {
                        collectionType = typeof(System.Collections.ObjectModel.Collection <>).MakeGenericType(property.EntityCollectionItemType);
                    }

                    result = this.CreateNewInstance(property.EdmProperty.Type, collectionType);
                }

                // Update the property value on the instance.
                property.SetValue(instance, result, property.PropertyName, false /* add */);
            }

            Debug.Assert(result != null, "result != null -- otherwise GetOrCreateCollectionProperty didn't fall back to creation");
            return(result);
        }
Пример #4
0
        private void ApplyItemsToCollection(MaterializerEntry entry, ClientPropertyAnnotation property, IEnumerable items, Uri nextLink, ProjectionPlan continuationPlan)
        {
            Func <LinkDescriptor, bool> predicate     = null;
            object               instance             = entry.ShouldUpdateFromPayload ? GetOrCreateCollectionProperty(entry.ResolvedObject, property, null) : null;
            ClientEdmModel       model                = ClientEdmModel.GetModel(base.ResponseInfo.MaxProtocolVersion);
            ClientTypeAnnotation clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(property.EntityCollectionItemType));

            foreach (object obj3 in items)
            {
                if (!clientTypeAnnotation.ElementType.IsAssignableFrom(obj3.GetType()))
                {
                    throw new InvalidOperationException(System.Data.Services.Client.Strings.AtomMaterializer_EntryIntoCollectionMismatch(obj3.GetType().FullName, clientTypeAnnotation.ElementType.FullName));
                }
                if (entry.ShouldUpdateFromPayload)
                {
                    property.SetValue(instance, obj3, property.PropertyName, true);
                    this.log.AddedLink(entry, property.PropertyName, obj3);
                }
            }
            if (entry.ShouldUpdateFromPayload)
            {
                this.FoundNextLinkForCollection(instance as IEnumerable, nextLink, continuationPlan);
            }
            else
            {
                this.FoundNextLinkForUnmodifiedCollection(property.GetValue(entry.ResolvedObject) as IEnumerable);
            }
            if ((this.mergeOption == MergeOption.OverwriteChanges) || (this.mergeOption == MergeOption.PreserveChanges))
            {
                if (predicate == null)
                {
                    predicate = delegate(LinkDescriptor x) {
                        if (MergeOption.OverwriteChanges != this.mergeOption)
                        {
                            return(EntityStates.Added != x.State);
                        }
                        return(true);
                    };
                }
                foreach (object obj4 in (from x in base.ResponseInfo.EntityTracker.GetLinks(entry.ResolvedObject, property.PropertyName).Where <LinkDescriptor>(predicate) select x.Target).Except <object>(EnumerateAsElementType <object>(items)))
                {
                    if (instance != null)
                    {
                        property.RemoveValue(instance, obj4);
                    }
                    this.log.RemovedLink(entry, property.PropertyName, obj4);
                }
            }
        }
Пример #5
0
 private void MergeLists(MaterializerEntry entry, ClientPropertyAnnotation property, IEnumerable list, Uri nextLink, ProjectionPlan plan)
 {
     if ((entry.ShouldUpdateFromPayload && (property.NullablePropertyType == list.GetType())) && (property.GetValue(entry.ResolvedObject) == null))
     {
         property.SetValue(entry.ResolvedObject, list, property.PropertyName, false);
         this.FoundNextLinkForCollection(list, nextLink, plan);
         foreach (object obj2 in list)
         {
             this.log.AddedLink(entry, property.PropertyName, obj2);
         }
     }
     else
     {
         this.ApplyItemsToCollection(entry, property, list, nextLink, plan);
     }
 }
Пример #6
0
        /// <summary>
        /// Populates the collection property on the entry's resolved object with the given items enumerator.
        /// </summary>
        /// <param name="entry">Entry with collection to be modified.</param>
        /// <param name="property">Collection property on the entry.</param>
        /// <param name="items">Values to apply onto the collection.</param>
        /// <param name="nextLink">Next link for collection continuation.</param>
        /// <param name="continuationPlan">Projection plan for collection continuation.</param>
        /// <returns>Collection instance that was populated.</returns>
        private object PopulateCollectionProperty(
            MaterializerEntry entry,
            ClientPropertyAnnotation property,
            IEnumerable <object> items,
            Uri nextLink,
            ProjectionPlan continuationPlan)
        {
            Debug.Assert(entry.Entry != null || entry.ForLoadProperty, "ODataResource should be non-null except for LoadProperty");
            Debug.Assert(property != null, "property != null");
            Debug.Assert(items != null, "items != null");

            object collection = null;

            ClientEdmModel       edmModel       = this.MaterializerContext.Model;
            ClientTypeAnnotation collectionType = edmModel.GetClientTypeAnnotation(edmModel.GetOrCreateEdmType(property.ResourceSetItemType));

            if (entry.ShouldUpdateFromPayload)
            {
                collection = this.GetOrCreateCollectionProperty(entry.ResolvedObject, property, entry.ForLoadProperty);

                foreach (object item in items)
                {
                    // Validate that item can be inserted into collection.
                    ValidateCollectionElementTypeIsItemType(item.GetType(), collectionType.ElementType);

                    property.SetValue(collection, item, property.PropertyName, true /* allowAdd? */);

                    this.EntityTrackingAdapter.MaterializationLog.AddedLink(entry, property.PropertyName, item);
                }

                this.FoundNextLinkForCollection(collection as IEnumerable, nextLink, continuationPlan);
            }
            else
            {
                Debug.Assert(!entry.ForLoadProperty, "LoadProperty should always have ShouldUpdateForPayload set to true.");

                foreach (object item in items)
                {
                    // Validate that item can be inserted into collection.
                    ValidateCollectionElementTypeIsItemType(item.GetType(), collectionType.ElementType);
                }

                this.FoundNextLinkForUnmodifiedCollection(property.GetValue(entry.ResolvedObject) as IEnumerable);
            }

            return(collection);
        }
Пример #7
0
        private static object GetOrCreateCollectionProperty(object instance, ClientPropertyAnnotation property, Type collectionType)
        {
            object obj2 = property.GetValue(instance);

            if (obj2 == null)
            {
                if (collectionType == null)
                {
                    collectionType = property.PropertyType;
                    if (collectionType.IsInterfaceEx())
                    {
                        collectionType = typeof(Collection <>).MakeGenericType(new Type[] { property.EntityCollectionItemType });
                    }
                }
                obj2 = Activator.CreateInstance(collectionType);
                property.SetValue(instance, obj2, property.PropertyName, false);
            }
            return(obj2);
        }
Пример #8
0
        private MaterializeAtom ReadPropertyFromRawData(ClientPropertyAnnotation property)
        {
            DataServiceContext context = (DataServiceContext)this.Source;

            bool merging = context.ApplyingChanges;

            try
            {
                context.ApplyingChanges = true;

                // if this is the data property for a media entry, what comes back
                // is the raw value (no markup)
#if ASTORIA_OPEN_OBJECT
                object openProps = null;
#endif
                string   mimeType    = null;
                Encoding encoding    = null;
                Type     elementType = property.EntityCollectionItemType ?? property.NullablePropertyType;
                IList    results     = (IList)Activator.CreateInstance(typeof(List <>).MakeGenericType(elementType));
                ContentTypeUtil.ReadContentType(this.ContentType, out mimeType, out encoding);

                using (Stream responseStream = this.GetResponseStream())
                {
                    // special case byte[], and for everything else let std conversion kick-in
                    if (property.PropertyType == typeof(byte[]))
                    {
                        int    total  = checked ((int)this.ContentLength);
                        byte[] buffer = null;
                        if (total >= 0)
                        {
                            buffer = LoadPropertyResult.ReadByteArrayWithContentLength(responseStream, total);
                        }
                        else
                        {
                            buffer = LoadPropertyResult.ReadByteArrayChunked(responseStream);
                        }

                        results.Add(buffer);
#if ASTORIA_OPEN_OBJECT
                        property.SetValue(this.entity, buffer, this.propertyName, ref openProps, false);
#else
                        property.SetValue(this.entity, buffer, this.propertyName, false);
#endif
                    }
                    else
                    {
                        // responseStream will disposed, StreamReader doesn't need to dispose of it.
                        StreamReader reader         = new StreamReader(responseStream, encoding);
                        object       convertedValue = property.PropertyType == typeof(string) ?
                                                      reader.ReadToEnd() :
                                                      ClientConvert.ChangeType(reader.ReadToEnd(), property.PropertyType);
                        results.Add(convertedValue);
#if ASTORIA_OPEN_OBJECT
                        property.SetValue(this.entity, convertedValue, this.propertyName, ref openProps, false);
#else
                        property.SetValue(this.entity, convertedValue, this.propertyName, false);
#endif
                    }
                }

#if ASTORIA_OPEN_OBJECT
                Debug.Assert(openProps == null, "These should not be set in this path");
#endif
                if (property.MimeTypeProperty != null)
                {
                    // an implication of this 3rd-arg-null is that mime type properties cannot be open props
#if ASTORIA_OPEN_OBJECT
                    property.MimeTypeProperty.SetValue(this.entity, mimeType, null, ref openProps, false);
                    Debug.Assert(openProps == null, "These should not be set in this path");
#else
                    property.MimeTypeProperty.SetValue(this.entity, mimeType, null, false);
#endif
                }

                return(MaterializeAtom.CreateWrapper(context, results));
            }
            finally
            {
                context.ApplyingChanges = merging;
            }
        }
Пример #9
0
        private MaterializeAtom ReadPropertyFromAtom(ClientPropertyAnnotation property)
        {
            DataServiceContext context = (DataServiceContext)this.Source;
            bool merging = context.ApplyingChanges;

            try
            {
                context.ApplyingChanges = true;

                // store the results so that they can be there in the response body.
                Type  elementType = property.IsEntityCollection ? property.EntityCollectionItemType : property.NullablePropertyType;
                IList results     = (IList)Activator.CreateInstance(typeof(List <>).MakeGenericType(elementType));

                DataServiceQueryContinuation continuation = null;

                // elementType.ElementType has Nullable stripped away, use nestedType for materializer
                using (MaterializeAtom materializer = this.GetMaterializer(this.plan))
                {
                    Debug.Assert(materializer != null, "materializer != null -- otherwise GetMaterializer() returned null rather than empty");

#if ASTORIA_OPEN_OBJECT
                    object openProperties = null;
#endif
                    // when SetLink to null, we cannot get materializer because have no-content response.
                    if (materializer.IsNoContentResponse() &&
                        property.GetValue(entity) != null &&
                        context.MergeOption != MergeOption.AppendOnly &&
                        context.MergeOption != MergeOption.NoTracking)
                    {
                        property.SetValue(this.entity, null, propertyName, false);
                    }
                    else
                    {
                        foreach (object child in materializer)
                        {
                            if (property.IsEntityCollection)
                            {
                                results.Add(child);
                            }
                            else if (property.IsPrimitiveOrEnumOrComplexCollection)
                            {
                                Debug.Assert(property.PropertyType.IsAssignableFrom(child.GetType()), "Created instance for storing collection items has to be compatible with the actual one.");

                                // Collection materialization rules requires to clear the collection if not null or set the property first and then add the collection items
                                object collectionInstance = property.GetValue(this.entity);
                                if (collectionInstance == null)
                                {
                                    // type of child has been resolved as per rules for collections so it is the correct type to instantiate
                                    collectionInstance = Activator.CreateInstance(child.GetType());

                                    // allowAdd is false - we need to assign instance as the new property value
                                    property.SetValue(this.entity, collectionInstance, this.propertyName, false /* allowAdd? */);
                                }
                                else
                                {
                                    // Clear existing collection
                                    property.ClearBackingICollectionInstance(collectionInstance);
                                }

                                foreach (var collectionItem in (IEnumerable)child)
                                {
                                    Debug.Assert(property.PrimitiveOrComplexCollectionItemType.IsAssignableFrom(collectionItem.GetType()), "Type of materialized collection items have to be compatible with the type of collection items in the actual collection property.");
                                    property.AddValueToBackingICollectionInstance(collectionInstance, collectionItem);
                                }

                                results.Add(collectionInstance);
                            }
                            else
                            {
#if ASTORIA_OPEN_OBJECT
                                property.SetValue(this.entity, child, this.propertyName, ref openProperties, false);
#else
                                // it is either primitive type, complex type or 1..1 navigation property so we just allow setting the value but not adding.
                                property.SetValue(this.entity, child, this.propertyName, false);
                                results.Add(child);
#endif
                            }
                        }
                    }

                    continuation = materializer.GetContinuation(null);
                }

                return(MaterializeAtom.CreateWrapper(context, results, continuation));
            }
            finally
            {
                context.ApplyingChanges = merging;
            }
        }
Пример #10
0
        private void MaterializeResolvedEntry(MaterializerEntry entry, bool includeLinks)
        {
            ClientTypeAnnotation actualType = entry.ActualType;

            if (!actualType.IsEntityType)
            {
                throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.AtomMaterializer_InvalidNonEntityType(actualType.ElementTypeName));
            }
            ODataMaterializer.MaterializeDataValues(actualType, entry.Properties, base.ResponseInfo.IgnoreMissingProperties);
            if (entry.NavigationLinks != null)
            {
                foreach (ODataNavigationLink link in entry.NavigationLinks)
                {
                    ClientPropertyAnnotation annotation2 = actualType.GetProperty(link.Name, true);
                    if (annotation2 != null)
                    {
                        ValidatePropertyMatch(annotation2, link, base.ResponseInfo, true);
                    }
                }
            }
            if (includeLinks && (entry.NavigationLinks != null))
            {
                foreach (ODataNavigationLink link2 in entry.NavigationLinks)
                {
                    MaterializerNavigationLink link3 = MaterializerNavigationLink.GetLink(link2);
                    if (link3 != null)
                    {
                        ClientPropertyAnnotation annotation3 = actualType.GetProperty(link2.Name, base.ResponseInfo.IgnoreMissingProperties);
                        if (annotation3 != null)
                        {
                            if (link3.Feed != null)
                            {
                                this.ApplyFeedToCollection(entry, annotation3, link3.Feed, includeLinks);
                            }
                            else if (link3.Entry != null)
                            {
                                MaterializerEntry entry2 = link3.Entry;
                                if (entry2.Entry != null)
                                {
                                    this.Materialize(entry2, annotation3.PropertyType, includeLinks);
                                }
                                if (entry.ShouldUpdateFromPayload)
                                {
                                    annotation3.SetValue(entry.ResolvedObject, entry2.ResolvedObject, link2.Name, true);
                                    this.log.SetLink(entry, annotation3.PropertyName, entry2.ResolvedObject);
                                }
                            }
                        }
                    }
                }
            }
            foreach (ODataProperty property in entry.Properties)
            {
                if (!(property.Value is ODataStreamReferenceValue))
                {
                    ClientPropertyAnnotation annotation4 = actualType.GetProperty(property.Name, base.ResponseInfo.IgnoreMissingProperties);
                    if ((annotation4 != null) && entry.ShouldUpdateFromPayload)
                    {
                        ValidatePropertyMatch(annotation4, property, base.ResponseInfo, true);
                        ODataMaterializer.ApplyDataValue(actualType, property, base.ResponseInfo.IgnoreMissingProperties, base.ResponseInfo, entry.ResolvedObject);
                    }
                }
            }
            ApplyLinkProperties(actualType, entry);
            if (base.ResponseInfo.HasReadingEntityHandlers)
            {
                ODataMaterializer.ReadingEntityInfo annotation = entry.Entry.GetAnnotation <ODataMaterializer.ReadingEntityInfo>();
                base.ResponseInfo.FireReadingEntityEvent(entry.ResolvedObject, annotation.EntryPayload, annotation.BaseUri);
            }
        }
        /// <summary>
        /// Implementation of Read/>.
        /// </summary>
        /// <returns>
        /// Return value of Read/>
        /// </returns>
        protected override bool ReadImplementation()
        {
            // Eagerly materialize the entire collection of objects into the items cache in LoadProperty scenario.
            if (this.iteration == 0)
            {
                while (base.ReadImplementation())
                {
                    this.items.Add(this.currentValue);
                }

                ClientPropertyAnnotation property         = this.responseInfo.Property;
                EntityDescriptor         entityDescriptor = this.responseInfo.EntityDescriptor;
                object entity = entityDescriptor.Entity;

                MaterializerEntry entry = MaterializerEntry.CreateEntryForLoadProperty(
                    entityDescriptor,
                    this.Format,
                    this.responseInfo.MergeOption != MergeOption.NoTracking);

                entry.ActualType = this.responseInfo.Model.GetClientTypeAnnotation(this.responseInfo.Model.GetOrCreateEdmType(entity.GetType()));

                if (property.IsEntityCollection)
                {
                    this.EntryValueMaterializationPolicy.ApplyItemsToCollection(
                        entry,
                        property,
                        this.items,
                        this.CurrentFeed != null ? this.CurrentFeed.NextPageLink : null,
                        this.MaterializeEntryPlan,
                        this.responseInfo.IsContinuation);
                }
                else
                {
                    Debug.Assert(this.items.Count <= 1, "Expecting 0 or 1 element.");
                    object target = this.items.Count > 0 ? this.items[0] : null;

                    Debug.Assert(property.EdmProperty.Type.TypeKind() == EdmTypeKind.Entity, "Must be entity typed property if not an entity collection property.");
                    this.EntityTrackingAdapter.MaterializationLog.SetLink(entry, property.PropertyName, target);

                    // Singleton entity property
                    property.SetValue(entity, target, property.PropertyName, false);
                }

                // Apply the materialization log.
                this.ApplyLogToContext();

                // Clear the log after applying it.
                this.ClearLog();
            }

            // Read object from the already loaded items cache.
            if (this.items.Count > this.iteration)
            {
                this.currentValue = this.items[this.iteration];
                this.iteration++;
                return(true);
            }
            else
            {
                this.currentValue = null;
                return(false);
            }
        }
Пример #12
0
        protected static void ApplyDataValue(ClientTypeAnnotation type, ODataProperty property, bool ignoreMissingProperties, System.Data.Services.Client.ResponseInfo responseInfo, object instance)
        {
            ClientPropertyAnnotation annotation = type.GetProperty(property.Name, ignoreMissingProperties);

            if (annotation != null)
            {
                if (annotation.IsPrimitiveOrComplexCollection)
                {
                    if (property.Value == null)
                    {
                        throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Collection_NullCollectionNotSupported(property.Name));
                    }
                    if (property.Value is string)
                    {
                        throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Deserialize_MixedTextWithComment);
                    }
                    if (property.Value is ODataComplexValue)
                    {
                        throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.AtomMaterializer_InvalidCollectionItem(property.Name));
                    }
                    object obj2 = annotation.GetValue(instance);
                    if (obj2 == null)
                    {
                        obj2 = CreateCollectionInstance(property, annotation.PropertyType, responseInfo);
                        annotation.SetValue(instance, obj2, property.Name, false);
                    }
                    else
                    {
                        annotation.ClearBackingICollectionInstance(obj2);
                    }
                    ApplyCollectionDataValues(property, ignoreMissingProperties, responseInfo, obj2, annotation.PrimitiveOrComplexCollectionItemType, new Action <object, object>(annotation.AddValueToBackingICollectionInstance));
                }
                else
                {
                    object            obj3   = property.Value;
                    ODataComplexValue value2 = obj3 as ODataComplexValue;
                    if ((obj3 != null) && (value2 != null))
                    {
                        if (!annotation.EdmProperty.Type.IsComplex())
                        {
                            throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Deserialize_ExpectingSimpleValue);
                        }
                        bool                 flag  = false;
                        ClientEdmModel       model = ClientEdmModel.GetModel(responseInfo.MaxProtocolVersion);
                        ClientTypeAnnotation clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(annotation.PropertyType));
                        object               obj4 = annotation.GetValue(instance);
                        if (obj4 == null)
                        {
                            obj4 = clientTypeAnnotation.CreateInstance();
                            flag = true;
                        }
                        MaterializeDataValues(clientTypeAnnotation, value2.Properties, ignoreMissingProperties);
                        ApplyDataValues(clientTypeAnnotation, value2.Properties, ignoreMissingProperties, responseInfo, obj4);
                        if (flag)
                        {
                            annotation.SetValue(instance, obj4, property.Name, true);
                        }
                    }
                    else
                    {
                        MaterializePrimitiveDataValue(annotation.NullablePropertyType, property);
                        annotation.SetValue(instance, property.GetMaterializedValue(), property.Name, true);
                    }
                }
            }
        }
Пример #13
0
        private MaterializeAtom ReadPropertyFromAtom(EntityDescriptor box, ClientPropertyAnnotation property)
        {
            MaterializeAtom    atom2;
            DataServiceContext source = (DataServiceContext)base.Source;
            bool applyingChanges      = source.ApplyingChanges;

            try
            {
                source.ApplyingChanges = true;
                bool   flag2           = EntityStates.Deleted == box.State;
                bool   instanceCreated = false;
                object instance        = null;
                if (property.IsEntityCollection)
                {
                    instance = this.GetCollectionInstance(property, out instanceCreated);
                }
                Type  type    = property.IsEntityCollection ? property.EntityCollectionItemType : property.NullablePropertyType;
                IList results = (IList)Activator.CreateInstance(typeof(List <>).MakeGenericType(new Type[] { type }));
                DataServiceQueryContinuation continuation = null;
                using (MaterializeAtom atom = base.GetMaterializer(this.plan))
                {
                    bool flag4 = property.EdmProperty.PropertyKind == EdmPropertyKind.Navigation;
                    int  num   = 0;
                    foreach (object obj3 in atom)
                    {
                        if (property.IsEntityCollection)
                        {
                            property.SetValue(instance, obj3, this.propertyName, true);
                            results.Add(obj3);
                        }
                        else if (property.IsPrimitiveOrComplexCollection)
                        {
                            object obj4 = property.GetValue(this.entity);
                            if (obj4 == null)
                            {
                                obj4 = Activator.CreateInstance(obj3.GetType());
                                property.SetValue(this.entity, obj4, this.propertyName, false);
                            }
                            else
                            {
                                property.ClearBackingICollectionInstance(obj4);
                            }
                            foreach (object obj5 in (IEnumerable)obj3)
                            {
                                property.AddValueToBackingICollectionInstance(obj4, obj5);
                            }
                            results.Add(obj4);
                        }
                        else
                        {
                            property.SetValue(this.entity, obj3, this.propertyName, false);
                            results.Add(obj3);
                        }
                        num++;
                        if (((obj3 != null) && (MergeOption.NoTracking != atom.MergeOptionValue)) && flag4)
                        {
                            if (flag2)
                            {
                                source.DeleteLink(this.entity, this.propertyName, obj3);
                            }
                            else
                            {
                                source.AttachLink(this.entity, this.propertyName, obj3, atom.MergeOptionValue);
                            }
                        }
                    }
                    continuation = atom.GetContinuation(null);
                    Util.SetNextLinkForCollection(property.IsEntityCollection ? instance : this.entity, continuation);
                }
                if (instanceCreated)
                {
                    property.SetValue(this.entity, instance, this.propertyName, false);
                }
                atom2 = MaterializeAtom.CreateWrapper(source, results, continuation);
            }
            finally
            {
                source.ApplyingChanges = applyingChanges;
            }
            return(atom2);
        }