Beispiel #1
0
        /// <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;
            }
        }
        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.Entry || payloadKind == ODataPayloadKind.Feed)
                {
                    // 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 != EdmTypeKind.Entity)
                    {
                        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)
                            {
                                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;
            }
        }