/// <summary>
/// Applies the values of a nested <paramref name="feed"/> to the collection
/// <paramref name="property"/> of the specified <paramref name="entry"/>.
/// </summary>
/// <param name="entry">Entry with collection to be modified.</param>
/// <param name="property">Collection property on the entry.</param>
/// <param name="feed">Values to apply onto the collection.</param>
/// <param name="includeLinks">Whether links that are expanded should be materialized.</param>
private void ApplyFeedToCollection(
MaterializerEntry entry,
ClientPropertyAnnotation property,
ODataResourceSet feed,
bool includeLinks)
{
Debug.Assert(entry.Entry != null, "entry != null");
Debug.Assert(property != null, "property != null");
Debug.Assert(feed != null, "feed != null");
ClientEdmModel edmModel = this.MaterializerContext.Model;
ClientTypeAnnotation collectionType = edmModel.GetClientTypeAnnotation(edmModel.GetOrCreateEdmType(property.ResourceSetItemType));
IEnumerable <ODataResource> entries = MaterializerFeed.GetFeed(feed).Entries;
foreach (ODataResource feedEntry in entries)
{
this.Materialize(MaterializerEntry.GetEntry(feedEntry), collectionType.ElementType, includeLinks);
}
ProjectionPlan continuationPlan = includeLinks ?
ODataEntityMaterializer.CreatePlanForDirectMaterialization(property.ResourceSetItemType) :
ODataEntityMaterializer.CreatePlanForShallowMaterialization(property.ResourceSetItemType);
this.ApplyItemsToCollection(
entry,
property,
entries.Select(e => MaterializerEntry.GetEntry(e).ResolvedObject),
feed.NextPageLink,
continuationPlan,
false);
}
/// <summary>constructor</summary>
/// <param name="entity">entity</param>
/// <param name="propertyName">name of collection or reference property to load</param>
/// <param name="context">Originating context</param>
/// <param name="request">Originating WebRequest</param>
/// <param name="callback">user callback</param>
/// <param name="state">user state</param>
/// <param name="dataServiceRequest">request object.</param>
/// <param name="plan">Projection plan for materialization; possibly null.</param>
/// <param name="isContinuation">Whether this request is a continuation request.</param>
internal LoadPropertyResult(object entity, string propertyName, DataServiceContext context, ODataRequestMessageWrapper request, AsyncCallback callback, object state, DataServiceRequest dataServiceRequest, ProjectionPlan plan, bool isContinuation)
: base(context, Util.LoadPropertyMethodName, dataServiceRequest, request, new RequestInfo(context, isContinuation), callback, state)
{
this.entity = entity;
this.propertyName = propertyName;
this.plan = plan;
}
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);
}
/// <summary>Create a request for a specific Uri</summary>
/// <param name="requestUri">The URI for the request.</param>
/// <param name="queryComponents">The query components for the request</param>
/// <param name="plan">Projection plan to reuse (possibly null).</param>
internal DataServiceRequest(Uri requestUri, QueryComponents queryComponents, ProjectionPlan plan)
: this(requestUri)
{
Debug.Assert(requestUri != null, "requestUri != null");
Debug.Assert(queryComponents != null, "queryComponents != null");
this.queryComponents = queryComponents;
this.plan = plan;
}
private void FoundNextLinkForCollection(IEnumerable collection, Uri link, ProjectionPlan plan)
{
if ((collection != null) && !base.nextLinkTable.ContainsKey(collection))
{
DataServiceQueryContinuation continuation = DataServiceQueryContinuation.Create(link, plan);
base.nextLinkTable.Add(collection, continuation);
Util.SetNextLinkForCollection(collection, continuation);
}
}
/// <summary>Initializes a new <see cref="DataServiceQueryContinuation"/> instance.</summary>
/// <param name="nextLinkUri">URI to next page of data.</param>
/// <param name="plan">Projection plan for results of next page.</param>
internal DataServiceQueryContinuation(Uri nextLinkUri, ProjectionPlan plan)
{
Debug.Assert(nextLinkUri != null, "nextLinkUri != null");
Debug.Assert(plan != null, "plan != null");
this.nextLinkUri = nextLinkUri;
this.plan = plan;
#if DEBUG
this.deserializing = false;
#endif
}
/// <summary>Records the fact that a rel='next' link was found for the specified <paramref name="collection"/>.</summary>
/// <param name="collection">Collection to add link to.</param>
/// <param name="link">Link (possibly null).</param>
/// <param name="plan">Projection plan for the collection (null allowed only if link is null).</param>
internal void FoundNextLinkForCollection(IEnumerable collection, Uri link, ProjectionPlan plan)
{
Debug.Assert(plan != null || link == null, "plan != null || link == null");
if (collection != null && !this.nextLinkTable.ContainsKey(collection))
{
DataServiceQueryContinuation continuation = DataServiceQueryContinuation.Create(link, plan);
this.nextLinkTable.Add(collection, continuation);
Util.SetNextLinkForCollection(collection, continuation);
}
}
private static ProjectionPlan CreatePlan(QueryComponents queryComponents)
{
LambdaExpression projection = queryComponents.Projection;
if (projection == null)
{
return(CreatePlanForDirectMaterialization(queryComponents.LastSegmentType));
}
ProjectionPlan plan = ProjectionPlanCompiler.CompilePlan(projection, queryComponents.NormalizerRewrites);
plan.LastSegmentType = queryComponents.LastSegmentType;
return(plan);
}
/// <summary>
/// Initializes a new instance of the <see cref="ODataReaderEntityMaterializer" /> class.
/// </summary>
/// <param name="odataMessageReader">The odata message reader.</param>
/// <param name="reader">The reader.</param>
/// <param name="materializerContext">The materializer context.</param>
/// <param name="entityTrackingAdapter">The entity tracking adapter.</param>
/// <param name="queryComponents">The query components.</param>
/// <param name="expectedType">The expected type.</param>
/// <param name="materializeEntryPlan">The materialize entry plan.</param>
public ODataReaderEntityMaterializer(
ODataMessageReader odataMessageReader,
ODataReaderWrapper reader,
IODataMaterializerContext materializerContext,
EntityTrackingAdapter entityTrackingAdapter,
QueryComponents queryComponents,
Type expectedType,
ProjectionPlan materializeEntryPlan)
: base(materializerContext, entityTrackingAdapter, queryComponents, expectedType, materializeEntryPlan)
{
this.messageReader = odataMessageReader;
this.feedEntryAdapter = new FeedAndEntryMaterializerAdapter(odataMessageReader, reader, materializerContext.Model, entityTrackingAdapter.MergeOption);
}
/// <summary>
/// Initializes a new instance of the <see cref="ODataEntriesEntityMaterializer" /> class.
/// </summary>
/// <param name="entries">The entries.</param>
/// <param name="materializerContext">The materializer context.</param>
/// <param name="entityTrackingAdapter">The entity tracking adapter.</param>
/// <param name="queryComponents">The query components.</param>
/// <param name="expectedType">The expected type.</param>
/// <param name="materializeEntryPlan">The materialize entry plan.</param>
/// <param name="format">The format.</param>
public ODataEntriesEntityMaterializer(
IEnumerable <ODataEntry> entries,
IODataMaterializerContext materializerContext,
EntityTrackingAdapter entityTrackingAdapter,
QueryComponents queryComponents,
Type expectedType,
ProjectionPlan materializeEntryPlan,
ODataFormat format)
: base(materializerContext, entityTrackingAdapter, queryComponents, expectedType, materializeEntryPlan)
{
this.format = format;
this.feedEntries = entries.GetEnumerator();
}
/// <summary>
/// Initializes a new instance of the <see cref="ODataLoadNavigationPropertyMaterializer" /> class.
/// </summary>
/// <param name="odataMessageReader">The odata message reader.</param>
/// <param name="reader">The reader.</param>
/// <param name="materializerContext">The materializer context.</param>
/// <param name="entityTrackingAdapter">The entity tracking adapter.</param>
/// <param name="queryComponents">The query components.</param>
/// <param name="expectedType">The expected type.</param>
/// <param name="materializeEntryPlan">The materialize entry plan.</param>
/// <param name="responseInfo">LoadProperty Response Info object.</param>
public ODataLoadNavigationPropertyMaterializer(
ODataMessageReader odataMessageReader,
ODataReaderWrapper reader,
IODataMaterializerContext materializerContext,
EntityTrackingAdapter entityTrackingAdapter,
QueryComponents queryComponents,
Type expectedType,
ProjectionPlan materializeEntryPlan,
LoadPropertyResponseInfo responseInfo)
: base(odataMessageReader, reader, materializerContext, entityTrackingAdapter, queryComponents, expectedType, materializeEntryPlan)
{
this.responseInfo = responseInfo;
this.items = new List <object>();
}
public void Continuation_Creates_Incorrect_DataServiceVersion()
{
// Regression test for:Client always sends DSV=2.0 when following a continuation token
ProjectionPlan plan = new ProjectionPlan()
{
LastSegmentType = typeof(int),
ProjectedType = typeof(int)
};
var continuationToken = DataServiceQueryContinuation.Create(new Uri("http://localhost/Set?$skiptoken='Me'"), plan);
QueryComponents queryComponents = continuationToken.CreateQueryComponents();
Assert.AreSame(queryComponents.Version, Util.ODataVersionEmpty, "OData-Version of query components should be empty for Continuation token");
}
/// <summary>Creates a new <see cref="DataServiceQueryContinuation"/> instance.</summary>
/// <param name="nextLinkUri">Link to next page of data (possibly null).</param>
/// <param name="plan">Plan to materialize the data (only null if nextLinkUri is null).</param>
/// <returns>A new continuation object; null if nextLinkUri is null.</returns>
internal static DataServiceQueryContinuation Create(Uri nextLinkUri, ProjectionPlan plan)
{
Debug.Assert(plan != null || nextLinkUri == null, "plan != null || nextLinkUri == null");
if (nextLinkUri == null)
{
return(null);
}
var constructors = typeof(DataServiceQueryContinuation <>).MakeGenericType(plan.ProjectedType).GetInstanceConstructors(false /*isPublic*/);
object result = Util.ConstructorInvoke(constructors.Single(), new object[] { nextLinkUri, plan });
return((DataServiceQueryContinuation)result);
}
private void ApplyFeedToCollection(MaterializerEntry entry, ClientPropertyAnnotation property, ODataFeed feed, bool includeLinks)
{
ClientEdmModel model = ClientEdmModel.GetModel(base.ResponseInfo.MaxProtocolVersion);
ClientTypeAnnotation clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(property.EntityCollectionItemType));
IEnumerable <ODataEntry> entries = MaterializerFeed.GetFeed(feed).Entries;
foreach (ODataEntry entry2 in entries)
{
this.Materialize(MaterializerEntry.GetEntry(entry2), clientTypeAnnotation.ElementType, includeLinks);
}
ProjectionPlan continuationPlan = includeLinks ? CreatePlanForDirectMaterialization(property.EntityCollectionItemType) : CreatePlanForShallowMaterialization(property.EntityCollectionItemType);
this.ApplyItemsToCollection(entry, property, from e in entries select MaterializerEntry.GetEntry(e).ResolvedObject, feed.NextPageLink, continuationPlan);
}
/// <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);
}
internal static IEnumerable ProjectionSelect(ODataEntityMaterializer materializer, MaterializerEntry entry, Type expectedType, Type resultType, ProjectionPath path, Func <object, object, Type, object> selector)
{
ClientEdmModel model = ClientEdmModel.GetModel(materializer.ResponseInfo.MaxProtocolVersion);
ClientTypeAnnotation clientTypeAnnotation = entry.ActualType ?? model.GetClientTypeAnnotation(model.GetOrCreateEdmType(expectedType));
IEnumerable enumerable = (IEnumerable)Util.ActivatorCreateInstance(typeof(List <>).MakeGenericType(new Type[] { resultType }), new object[0]);
MaterializerNavigationLink link = null;
ClientPropertyAnnotation property = null;
for (int i = 0; i < path.Count; i++)
{
ProjectionPathSegment segment = path[i];
if (segment.SourceTypeAs != null)
{
clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(segment.SourceTypeAs));
}
if (segment.Member != null)
{
string member = segment.Member;
property = clientTypeAnnotation.GetProperty(member, false);
link = GetPropertyOrThrow(entry.NavigationLinks, member, entry.Id);
if (link.Entry != null)
{
entry = link.Entry;
clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(property.PropertyType));
}
}
}
ValidatePropertyMatch(property, link.Link);
MaterializerFeed feed = MaterializerFeed.GetFeed(link.Feed);
Action <object, object> addToCollectionDelegate = ODataMaterializer.GetAddToCollectionDelegate(enumerable.GetType());
foreach (ODataEntry entry2 in feed.Entries)
{
object obj2 = selector(materializer, entry2, property.EntityCollectionItemType);
addToCollectionDelegate(enumerable, obj2);
}
ProjectionPlan plan = new ProjectionPlan {
LastSegmentType = property.EntityCollectionItemType,
Plan = selector,
ProjectedType = resultType
};
materializer.FoundNextLinkForCollection(enumerable, feed.NextPageLink, plan);
return(enumerable);
}
/// <summary>
/// Processes the result for successful request and produces the actual result of the request.
/// </summary>
/// <typeparam name="TElement">Element type of the result.</typeparam>
/// <param name="plan">The plan to use for the projection, if available in precompiled form.</param>
/// <returns>A instance of QueryResponseResult created on top of of the request.</returns>
internal QueryOperationResponse <TElement> ProcessResult <TElement>(ProjectionPlan plan)
{
Debug.Assert(this.responseInfo != null, "The request didn't complete yet, we don't have a response info for it.");
MaterializeAtom materializeAtom = this.CreateMaterializer(plan, this.ServiceRequest.PayloadKind);
var response = this.GetResponse <TElement>(materializeAtom);
// When query feed, the instance annotation can be materialized only when enumerating the feed.
// So we register this action which will be called when enumerating the feed.
materializeAtom.SetInstanceAnnotations = (instanceAnnotations) =>
{
if (!this.responseInfo.Context.InstanceAnnotations.ContainsKey(response) &&
instanceAnnotations != null && instanceAnnotations.Count > 0)
{
this.responseInfo.Context.InstanceAnnotations.Add(response, instanceAnnotations);
}
};
return(response);
}
/// <summary>
/// Create materializer on top of response stream
/// </summary>
/// <param name="plan">Precompiled projection plan (possibly null).</param>
/// <returns>A materializer instance ready to deserialize the result</returns>
internal MaterializeAtom GetMaterializer(ProjectionPlan plan)
{
Debug.Assert(this.IsCompletedInternally, "request hasn't completed yet");
MaterializeAtom materializer;
if (HttpStatusCode.NoContent != this.StatusCode)
{
Debug.Assert(this.responseInfo != null, "The request didn't complete yet, we don't have a response info for it.");
materializer = this.CreateMaterializer(plan, ODataPayloadKind.Unsupported);
}
else
{
materializer = MaterializeAtom.EmptyResults;
}
return(materializer);
}
/// <summary>
/// get an enumerable materializes the objects the response
/// </summary>
/// <param name="responseInfo">context</param>
/// <param name="queryComponents">query components</param>
/// <param name="plan">Projection plan (if compiled in an earlier query).</param>
/// <param name="contentType">contentType</param>
/// <param name="message">the message</param>
/// <param name="expectedPayloadKind">expected payload kind.</param>
/// <returns>atom materializer</returns>
internal static MaterializeAtom Materialize(
ResponseInfo responseInfo,
QueryComponents queryComponents,
ProjectionPlan plan,
string contentType,
IODataResponseMessage message,
ODataPayloadKind expectedPayloadKind)
{
Debug.Assert(queryComponents != null, "querycomponents");
Debug.Assert(message != null, "message");
// If there is no content (For e.g. /Customers(1)/BestFriend is null), we need to return empty results.
if (message.StatusCode == (int)HttpStatusCode.NoContent || String.IsNullOrEmpty(contentType))
{
return(MaterializeAtom.EmptyResults);
}
return(new MaterializeAtom(responseInfo, queryComponents, plan, message, expectedPayloadKind));
}
#pragma warning restore 649
#endif
#endregion Private fields
/// <summary>
/// constructor
/// </summary>
/// <param name="responseInfo">originating context</param>
/// <param name="queryComponents">Query components (projection, expected type)</param>
/// <param name="plan">Projection plan (if compiled in an earlier query).</param>
/// <param name="responseMessage">responseMessage</param>
/// <param name="payloadKind">The kind of the payload to materialize.</param>
internal MaterializeAtom(
ResponseInfo responseInfo,
QueryComponents queryComponents,
ProjectionPlan plan,
IODataResponseMessage responseMessage,
ODataPayloadKind payloadKind)
{
Debug.Assert(queryComponents != null, "queryComponents != null");
this.responseInfo = responseInfo;
this.elementType = queryComponents.LastSegmentType;
this.expectingPrimitiveValue = PrimitiveType.IsKnownNullableType(elementType);
Debug.Assert(responseMessage != null, "Response message is null! Did you mean to use Materializer.ResultsWrapper/EmptyResults?");
Type implementationType;
Type materializerType = GetTypeForMaterializer(this.expectingPrimitiveValue, this.elementType, responseInfo.Model, out implementationType);
this.materializer = ODataMaterializer.CreateMaterializerForMessage(responseMessage, responseInfo, materializerType, queryComponents, plan, payloadKind);
}
/// <summary>
/// Creates an instance of <see cref="MaterializeAtom"/> for the given plan.
/// </summary>
/// <param name="plan">The projection plan.</param>
/// <param name="payloadKind">expected payload kind.</param>
/// <returns>A new materializer instance</returns>
private MaterializeAtom CreateMaterializer(ProjectionPlan plan, ODataPayloadKind payloadKind)
{
QueryComponents queryComponents = this.ServiceRequest.QueryComponents(this.responseInfo.Model);
// In V2, in projection path, we did not check for assignability between the expected type and the type returned by the type resolver.
if (plan != null || queryComponents.Projection != null)
{
this.RequestInfo.TypeResolver.IsProjectionRequest();
}
var responseMessageWrapper = new HttpWebResponseMessage(
new HeaderCollection(this.responseMessage),
this.responseMessage.StatusCode,
this.GetResponseStream);
return(DataServiceRequest.Materialize(
this.responseInfo,
queryComponents,
plan,
this.ContentType,
responseMessageWrapper,
payloadKind));
}
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);
}
}
public static ODataMaterializer CreateMaterializerForMessage(IODataResponseMessage responseMessage, System.Data.Services.Client.ResponseInfo responseInfo, Type materializerType, QueryComponents queryComponents, ProjectionPlan plan, ODataPayloadKind payloadKind)
{
ODataMaterializer materializer2;
bool projectionQuery = (plan != null) || (queryComponents.Projection != null);
ODataMessageReader messageReader = CreateODataMessageReader(responseMessage, responseInfo, projectionQuery, ref payloadKind);
IEdmType expectedType = null;
try
{
ODataMaterializer materializer;
if (materializerType != typeof(object))
{
expectedType = ClientEdmModel.GetModel(responseInfo.MaxProtocolVersion).GetOrCreateEdmType(materializerType);
}
if ((payloadKind == ODataPayloadKind.Entry) || (payloadKind == ODataPayloadKind.Feed))
{
if ((expectedType != null) && (expectedType.TypeKind != EdmTypeKind.Entity))
{
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.AtomMaterializer_InvalidNonEntityType(materializerType.FullName));
}
ODataReader reader = CreateODataReader(messageReader, payloadKind, expectedType, responseInfo.MaxProtocolVersion);
materializer = new ODataReaderEntityMaterializer(messageReader, reader, responseInfo, queryComponents, materializerType, plan);
}
else
{
switch (payloadKind)
{
case ODataPayloadKind.Property:
if ((expectedType != null) && (expectedType.TypeKind == EdmTypeKind.Entity))
{
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.AtomMaterializer_InvalidEntityType(materializerType.FullName));
}
break;
case ODataPayloadKind.EntityReferenceLink:
case ODataPayloadKind.EntityReferenceLinks:
materializer = new ODataLinksMaterializer(messageReader, responseInfo, materializerType, queryComponents.SingleResult);
goto Label_013A;
case ODataPayloadKind.Value:
materializer = new ODataValueMaterializer(messageReader, responseInfo, materializerType, queryComponents.SingleResult);
goto Label_013A;
case ODataPayloadKind.BinaryValue:
case ODataPayloadKind.Collection:
case ODataPayloadKind.ServiceDocument:
case ODataPayloadKind.MetadataDocument:
goto Label_0129;
case ODataPayloadKind.Error:
{
ODataError error = messageReader.ReadError();
throw new ODataErrorException(error.Message, error);
}
default:
goto Label_0129;
}
materializer = new ODataPropertyMaterializer(messageReader, responseInfo, materializerType, queryComponents.SingleResult);
}
goto Label_013A;
Label_0129:
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.AtomMaterializer_InvalidResponsePayload(responseInfo.DataNamespace));
Label_013A:
materializer2 = materializer;
}
catch (Exception exception)
{
if (CommonUtil.IsCatchableExceptionType(exception))
{
messageReader.Dispose();
}
throw;
}
return(materializer2);
}
/// <summary>
/// Applies the values of the <paramref name="items"/> enumeration to the
/// <paramref name="property"/> of the specified <paramref name="entry"/>.
/// </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>
/// <param name="isContinuation">Whether this is a continuation request.</param>
internal void ApplyItemsToCollection(
MaterializerEntry entry,
ClientPropertyAnnotation property,
IEnumerable items,
Uri nextLink,
ProjectionPlan continuationPlan,
bool isContinuation)
{
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");
IEnumerable <object> itemsEnumerable = ODataEntityMaterializer.EnumerateAsElementType <object>(items);
// Populate the collection property with items collection.
object collection = this.PopulateCollectionProperty(entry, property, itemsEnumerable, nextLink, continuationPlan);
// Get collection of all non-linked elements in collection and remove them except for the ones that were obtained from the response.
if (this.EntityTrackingAdapter.MergeOption == MergeOption.OverwriteChanges ||
this.EntityTrackingAdapter.MergeOption == MergeOption.PreserveChanges)
{
var linkedItemsInCollection =
this.EntityTrackingAdapter
.EntityTracker
.GetLinks(entry.ResolvedObject, property.PropertyName)
.Select(l => new { l.Target, l.IsModified });
if (collection != null && !property.IsDictionary)
{
var nonLinkedNonReceivedItemsInCollection = ODataEntityMaterializer.EnumerateAsElementType <object>((IEnumerable)collection)
.Except(linkedItemsInCollection.Select(i => i.Target))
.Except(itemsEnumerable).ToArray();
// Since no link exists, we just remove the item from the collection
foreach (var item in nonLinkedNonReceivedItemsInCollection)
{
property.RemoveValue(collection, item);
}
}
// When the first time a property or collection is being loaded, we remove all items other than the ones that we receive.
if (!isContinuation)
{
IEnumerable <object> itemsToRemove;
if (this.EntityTrackingAdapter.MergeOption == MergeOption.OverwriteChanges)
{
itemsToRemove = linkedItemsInCollection.Select(i => i.Target);
}
else
{
Debug.Assert(
this.EntityTrackingAdapter.MergeOption == MergeOption.PreserveChanges,
"this.EntityTrackingAdapter.MergeOption == MergeOption.PreserveChanges");
itemsToRemove = linkedItemsInCollection
.Where(i => !i.IsModified)
.Select(i => i.Target);
}
itemsToRemove = itemsToRemove.Except(itemsEnumerable);
foreach (var item in itemsToRemove)
{
if (collection != null)
{
property.RemoveValue(collection, item);
}
this.EntityTrackingAdapter.MaterializationLog.RemovedLink(entry, property.PropertyName, item);
}
}
}
}
/// <summary>
/// Creates an <see cref="ODataMaterializer"/> for a response.
/// </summary>
/// <param name="responseMessage">The response message.</param>
/// <param name="responseInfo">The response context.</param>
/// <param name="materializerType">The type to materialize.</param>
/// <param name="queryComponents">The query components for the request.</param>
/// <param name="plan">The projection plan.</param>
/// <param name="payloadKind">expected payload kind.</param>
/// <returns>A materializer specialized for the given response.</returns>
public static ODataMaterializer CreateMaterializerForMessage(
IODataResponseMessage responseMessage,
ResponseInfo responseInfo,
Type materializerType,
QueryComponents queryComponents,
ProjectionPlan plan,
ODataPayloadKind payloadKind)
{
ODataMessageReader messageReader = CreateODataMessageReader(responseMessage, responseInfo, ref payloadKind);
ODataMaterializer result;
IEdmType edmType = null;
try
{
ODataMaterializerContext materializerContext = new ODataMaterializerContext(responseInfo);
// Since in V1/V2, astoria client allowed Execute<object> and depended on the typeresolver or the wire type name
// to get the clr type to materialize. Hence if we see the materializer type as object, we should set the edmtype
// to null, since there is no expected type.
if (materializerType != typeof(System.Object))
{
edmType = responseInfo.TypeResolver.ResolveExpectedTypeForReading(materializerType);
}
if (payloadKind == ODataPayloadKind.Property && edmType != null)
{
if (edmType.TypeKind.IsStructured())
{
payloadKind = ODataPayloadKind.Resource;
}
else if (edmType.TypeKind == EdmTypeKind.Collection && (edmType as IEdmCollectionType).ElementType.IsStructured())
{
payloadKind = ODataPayloadKind.ResourceSet;
}
}
if (payloadKind == ODataPayloadKind.Resource || payloadKind == ODataPayloadKind.ResourceSet)
{
// In V1/V2, we allowed System.Object type to be allowed to pass to ExecuteQuery.
// Hence we need to explicitly check for System.Object to allow this
if (edmType != null && !edmType.TypeKind.IsStructured())
{
throw DSClient.Error.InvalidOperation(DSClient.Strings.AtomMaterializer_InvalidNonEntityType(materializerType.FullName));
}
ODataReaderWrapper reader = ODataReaderWrapper.Create(messageReader, payloadKind, edmType, responseInfo.ResponsePipeline);
EntityTrackingAdapter entityTrackingAdapter = new EntityTrackingAdapter(responseInfo.EntityTracker, responseInfo.MergeOption, responseInfo.Model, responseInfo.Context);
LoadPropertyResponseInfo loadPropertyResponseInfo = responseInfo as LoadPropertyResponseInfo;
if (loadPropertyResponseInfo != null)
{
result = new ODataLoadNavigationPropertyMaterializer(
messageReader,
reader,
materializerContext,
entityTrackingAdapter,
queryComponents,
materializerType,
plan,
loadPropertyResponseInfo);
}
else
{
result = new ODataReaderEntityMaterializer(
messageReader,
reader,
materializerContext,
entityTrackingAdapter,
queryComponents,
materializerType,
plan);
}
}
else
{
switch (payloadKind)
{
case ODataPayloadKind.Value:
result = new ODataValueMaterializer(messageReader, materializerContext, materializerType, queryComponents.SingleResult);
break;
case ODataPayloadKind.Collection:
result = new ODataCollectionMaterializer(messageReader, materializerContext, materializerType, queryComponents.SingleResult);
break;
case ODataPayloadKind.Property:
case ODataPayloadKind.IndividualProperty:
// Top level properties cannot be of entity type.
if (edmType != null && (edmType.TypeKind == EdmTypeKind.Entity || edmType.TypeKind == EdmTypeKind.Complex))
{
throw DSClient.Error.InvalidOperation(DSClient.Strings.AtomMaterializer_InvalidEntityType(materializerType.FullName));
}
result = new ODataPropertyMaterializer(messageReader, materializerContext, materializerType, queryComponents.SingleResult);
break;
case ODataPayloadKind.EntityReferenceLinks:
case ODataPayloadKind.EntityReferenceLink:
result = new ODataLinksMaterializer(messageReader, materializerContext, materializerType, queryComponents.SingleResult);
break;
case ODataPayloadKind.Error:
var odataError = messageReader.ReadError();
throw new ODataErrorException(odataError.Message, odataError);
default:
throw DSClient.Error.InvalidOperation(DSClient.Strings.AtomMaterializer_InvalidResponsePayload(XmlConstants.DataWebNamespace));
}
}
return(result);
}
catch (Exception ex)
{
if (CommonUtil.IsCatchableExceptionType(ex))
{
// Dispose the message reader in all error scenarios.
messageReader.Dispose();
}
throw;
}
}
private MaterializeAtom CreateMaterializer <T>(string content, string contentType, ProjectionPlan plan)
{
ResponseInfo info = new ResponseInfo(new RequestInfo(this.context), MergeOption.AppendOnly);
QueryComponents qc = new QueryComponents(this.serviceUri, Util.ODataVersion4, typeof(T), null, null);
Dictionary <string, string> headers = new Dictionary <string, string>();
headers.Add(XmlConstants.HttpContentType, contentType);
var bytes = System.Text.Encoding.UTF8.GetBytes(content);
TestResponseMessage responseMessage = new TestResponseMessage(headers, HttpStatusCode.OK, () => new System.IO.MemoryStream(bytes));
return(new MaterializeAtom(info, qc, plan, responseMessage, ODataPayloadKind.Unsupported));
}
private void TestMaterialization <T>(string content, string contentType, Action <MaterializeAtom> testAction, ProjectionPlan plan = null)
{
content = content.Replace("##BASEURI##", ServiceUri);
using (MaterializeAtom materializer = CreateMaterializer <T>(content, contentType, plan))
{
testAction(materializer);
}
}
internal static object ProjectionValueForPath(ODataEntityMaterializer materializer, MaterializerEntry entry, Type expectedType, ProjectionPath path)
{
if ((path.Count == 0) || ((path.Count == 1) && (path[0].Member == null)))
{
if (!entry.EntityHasBeenResolved)
{
materializer.Materialize(entry, expectedType, false);
}
return(entry.ResolvedObject);
}
object streamLink = null;
ODataNavigationLink link = null;
ODataProperty atomProperty = null;
ICollection <ODataNavigationLink> navigationLinks = entry.NavigationLinks;
IEnumerable <ODataProperty> properties = entry.Entry.Properties;
ClientEdmModel model = ClientEdmModel.GetModel(materializer.ResponseInfo.MaxProtocolVersion);
for (int i = 0; i < path.Count; i++)
{
Func <StreamDescriptor, bool> predicate = null;
Func <ODataNavigationLink, bool> func2 = null;
Func <ODataProperty, bool> func3 = null;
Func <ODataProperty, bool> func4 = null;
Func <ODataNavigationLink, bool> func5 = null;
string propertyName;
ProjectionPathSegment segment = path[i];
if (segment.Member != null)
{
bool flag = i == (path.Count - 1);
propertyName = segment.Member;
expectedType = segment.SourceTypeAs ?? expectedType;
ClientPropertyAnnotation property = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(expectedType)).GetProperty(propertyName, false);
if (property.IsStreamLinkProperty)
{
if (predicate == null)
{
predicate = sd => sd.Name == propertyName;
}
StreamDescriptor descriptor = entry.EntityDescriptor.StreamDescriptors.Where <StreamDescriptor>(predicate).SingleOrDefault <StreamDescriptor>();
if (descriptor == null)
{
if (segment.SourceTypeAs == null)
{
throw new InvalidOperationException(System.Data.Services.Client.Strings.AtomMaterializer_PropertyMissing(propertyName, entry.Entry.Id));
}
return(WebUtil.GetDefaultValue <DataServiceStreamLink>());
}
streamLink = descriptor.StreamLink;
}
else
{
if (segment.SourceTypeAs != null)
{
if (func2 == null)
{
func2 = p => p.Name == propertyName;
}
if (!navigationLinks.Any <ODataNavigationLink>(func2))
{
if (func3 == null)
{
func3 = p => p.Name == propertyName;
}
if (!properties.Any <ODataProperty>(func3) && flag)
{
return(WebUtil.GetDefaultValue(property.PropertyType));
}
}
}
if (func4 == null)
{
func4 = p => p.Name == propertyName;
}
atomProperty = properties.Where <ODataProperty>(func4).FirstOrDefault <ODataProperty>();
if (func5 == null)
{
func5 = p => p.Name == propertyName;
}
link = ((atomProperty == null) && (navigationLinks != null)) ? navigationLinks.Where <ODataNavigationLink>(func5).FirstOrDefault <ODataNavigationLink>() : null;
if ((link == null) && (atomProperty == null))
{
throw new InvalidOperationException(System.Data.Services.Client.Strings.AtomMaterializer_PropertyMissing(propertyName, entry.Entry.Id));
}
if (link != null)
{
ValidatePropertyMatch(property, link);
MaterializerNavigationLink link2 = MaterializerNavigationLink.GetLink(link);
if (link2.Feed != null)
{
MaterializerFeed feed = MaterializerFeed.GetFeed(link2.Feed);
Type implementationType = ClientTypeUtil.GetImplementationType(segment.ProjectionType, typeof(ICollection <>));
if (implementationType == null)
{
implementationType = ClientTypeUtil.GetImplementationType(segment.ProjectionType, typeof(IEnumerable <>));
}
Type nestedExpectedType = implementationType.GetGenericArguments()[0];
Type projectionType = segment.ProjectionType;
if (projectionType.IsInterfaceEx() || ODataMaterializer.IsDataServiceCollection(projectionType))
{
projectionType = typeof(Collection <>).MakeGenericType(new Type[] { nestedExpectedType });
}
IEnumerable list = (IEnumerable)Util.ActivatorCreateInstance(projectionType, new object[0]);
MaterializeToList(materializer, list, nestedExpectedType, feed.Entries);
if (ODataMaterializer.IsDataServiceCollection(segment.ProjectionType))
{
list = (IEnumerable)Util.ActivatorCreateInstance(WebUtil.GetDataServiceCollectionOfT(new Type[] { nestedExpectedType }), new object[] { list, TrackingMode.None });
}
ProjectionPlan plan = CreatePlanForShallowMaterialization(nestedExpectedType);
materializer.FoundNextLinkForCollection(list, feed.Feed.NextPageLink, plan);
streamLink = list;
}
else if (link2.Entry != null)
{
MaterializerEntry entry2 = link2.Entry;
if (flag)
{
if ((entry2.Entry != null) && !entry2.EntityHasBeenResolved)
{
materializer.Materialize(entry2, property.PropertyType, false);
}
}
else
{
CheckEntryToAccessNotNull(entry2, propertyName);
}
properties = entry2.Properties;
navigationLinks = entry2.NavigationLinks;
streamLink = entry2.ResolvedObject;
entry = entry2;
}
}
else
{
if (atomProperty.Value is ODataStreamReferenceValue)
{
streamLink = null;
navigationLinks = ODataMaterializer.EmptyLinks;
properties = ODataMaterializer.EmptyProperties;
continue;
}
ValidatePropertyMatch(property, atomProperty);
if (ClientTypeUtil.TypeOrElementTypeIsEntity(property.PropertyType))
{
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.AtomMaterializer_InvalidEntityType(property.EntityCollectionItemType ?? property.PropertyType));
}
if (property.IsPrimitiveOrComplexCollection)
{
object instance = streamLink ?? (entry.ResolvedObject ?? Util.ActivatorCreateInstance(expectedType, new object[0]));
ODataMaterializer.ApplyDataValue(model.GetClientTypeAnnotation(model.GetOrCreateEdmType(instance.GetType())), atomProperty, materializer.ResponseInfo.IgnoreMissingProperties, materializer.ResponseInfo, instance);
navigationLinks = ODataMaterializer.EmptyLinks;
properties = ODataMaterializer.EmptyProperties;
}
else if (atomProperty.Value is ODataComplexValue)
{
ODataComplexValue complexValue = atomProperty.Value as ODataComplexValue;
ODataMaterializer.MaterializeComplexTypeProperty(property.PropertyType, complexValue, materializer.ResponseInfo.IgnoreMissingProperties, materializer.ResponseInfo);
properties = complexValue.Properties;
navigationLinks = ODataMaterializer.EmptyLinks;
}
else
{
if ((atomProperty.Value == null) && !ClientTypeUtil.CanAssignNull(property.NullablePropertyType))
{
throw new InvalidOperationException(System.Data.Services.Client.Strings.AtomMaterializer_CannotAssignNull(atomProperty.Name, property.NullablePropertyType));
}
ODataMaterializer.MaterializePrimitiveDataValue(property.NullablePropertyType, atomProperty);
navigationLinks = ODataMaterializer.EmptyLinks;
properties = ODataMaterializer.EmptyProperties;
}
streamLink = atomProperty.GetMaterializedValue();
}
}
expectedType = property.PropertyType;
}
}
return(streamLink);
}
public ODataEntityMaterializer(ResponseInfo responseInfo, QueryComponents queryComponents, Type expectedType, ProjectionPlan materializeEntryPlan) : base(responseInfo, expectedType)
{
this.materializeEntryPlan = materializeEntryPlan ?? CreatePlan(queryComponents);
this.mergeOption = base.ResponseInfo.MergeOption;
this.log = new AtomMaterializerLog(base.ResponseInfo);
}
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);
}
}
}
