private void WriteToStream(Type type, object value, Stream writeStream, HttpContent content, HttpContentHeaders contentHeaders)
{
IEdmModel model = Request.ODataProperties().Model;
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
ODataSerializer serializer = GetSerializer(type, value, model, _serializerProvider);
UrlHelper urlHelper = Request.GetUrlHelper() ?? new UrlHelper(Request);
ODataPath path = Request.ODataProperties().Path;
IEdmNavigationSource targetNavigationSource = path == null ? null : path.NavigationSource;
// serialize a response
HttpConfiguration configuration = Request.GetConfiguration();
if (configuration == null)
{
throw Error.InvalidOperation(SRResources.RequestMustContainConfiguration);
}
string preferHeader = RequestPreferenceHelpers.GetRequestPreferHeader(Request);
string annotationFilter = null;
if (!String.IsNullOrEmpty(preferHeader))
{
ODataMessageWrapper messageWrapper = new ODataMessageWrapper(writeStream, content.Headers);
messageWrapper.SetHeader(RequestPreferenceHelpers.PreferHeaderName, preferHeader);
annotationFilter = messageWrapper.PreferHeader().AnnotationFilter;
}
IODataResponseMessage responseMessage = new ODataMessageWrapper(writeStream, content.Headers);
if (annotationFilter != null)
{
responseMessage.PreferenceAppliedHeader().AnnotationFilter = annotationFilter;
}
Uri baseAddress = GetBaseAddress(Request);
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings(MessageWriterSettings)
{
PayloadBaseUri = baseAddress,
Version = _version,
};
string metadataLink = urlHelper.CreateODataLink(new MetadataPathSegment());
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
writerSettings.ODataUri = new ODataUri
{
ServiceRoot = baseAddress,
// TODO: 1604 Convert webapi.odata's ODataPath to ODL's ODataPath, or use ODL's ODataPath.
SelectAndExpand = Request.ODataProperties().SelectExpandClause,
Path = (path == null || IsOperationPath(path)) ? null : path.ODLPath,
};
MediaTypeHeaderValue contentType = null;
if (contentHeaders != null && contentHeaders.ContentType != null)
{
contentType = contentHeaders.ContentType;
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
Request = Request,
RequestContext = Request.GetRequestContext(),
Url = urlHelper,
NavigationSource = targetNavigationSource,
Model = model,
RootElementName = GetRootElementName(path) ?? "root",
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.Feed,
Path = path,
MetadataLevel = ODataMediaTypes.GetMetadataLevel(contentType),
SelectExpandClause = Request.ODataProperties().SelectExpandClause
};
serializer.WriteObject(value, type, messageWriter, writeContext);
}
}
private void WriteResponseBody(OutputFormatterWriteContext context)
{
HttpRequest request = context.HttpContext.Request;
HttpResponse response = context.HttpContext.Response;
IEdmModel model = request.ODataProperties().Model;
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
object value = context.Object;
Type type = value.GetType();
ODataSerializer serializer = GetSerializer(type, value, model, new DefaultODataSerializerProvider(), request);
IUrlHelper urlHelper = context.HttpContext.UrlHelper();
ODataPath path = request.ODataProperties().Path;
IEdmNavigationSource targetNavigationSource = path == null ? null : path.NavigationSource;
string preferHeader = RequestPreferenceHelpers.GetRequestPreferHeader(request);
string annotationFilter = null;
if (!String.IsNullOrEmpty(preferHeader))
{
ODataMessageWrapper messageWrapper = new ODataMessageWrapper(response.Body, response.Headers);
messageWrapper.SetHeader(RequestPreferenceHelpers.PreferHeaderName, preferHeader);
annotationFilter = messageWrapper.PreferHeader().AnnotationFilter;
}
IODataResponseMessage responseMessage = new ODataMessageWrapper(response.Body, response.Headers);
if (annotationFilter != null)
{
responseMessage.PreferenceAppliedHeader().AnnotationFilter = annotationFilter;
}
Uri baseAddress = GetBaseAddress(request);
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings(_messageWriterSettings)
{
PayloadBaseUri = baseAddress,
Version = ODataProperties.DefaultODataVersion,
};
string metadataLink = urlHelper.CreateODataLink(new MetadataPathSegment());
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
writerSettings.ODataUri = new ODataUri
{
ServiceRoot = baseAddress,
// TODO: 1604 Convert webapi.odata's ODataPath to ODL's ODataPath, or use ODL's ODataPath.
SelectAndExpand = request.ODataProperties().SelectExpandClause,
Path = (path == null || IsOperationPath(path)) ? null : path.ODLPath,
};
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
Request = request,
RequestContext = request.HttpContext,
Url = urlHelper,
NavigationSource = targetNavigationSource,
Model = model,
RootElementName = GetRootElementName(path) ?? "root",
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.Feed,
Path = path,
MetadataLevel = ODataMediaTypes.GetMetadataLevel(new MediaTypeHeaderValue(context.ContentType.Value)),
SelectExpandClause = request.ODataProperties().SelectExpandClause
};
serializer.WriteObject(value, type, messageWriter, writeContext);
}
}
internal static void WriteToStream(
Type type,
object value,
IEdmModel model,
ODataVersion version,
Uri baseAddress,
MediaTypeHeaderValue contentType,
IWebApiUrlHelper internaUrlHelper,
IWebApiRequestMessage internalRequest,
IWebApiHeaders internalRequestHeaders,
Func <IServiceProvider, ODataMessageWrapper> getODataMessageWrapper,
Func <IEdmTypeReference, ODataSerializer> getEdmTypeSerializer,
Func <Type, ODataSerializer> getODataPayloadSerializer,
Func <ODataSerializerContext> getODataSerializerContext)
{
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
ODataSerializer serializer = GetSerializer(type, value, internalRequest, getEdmTypeSerializer, getODataPayloadSerializer);
ODataPath path = internalRequest.Context.Path;
IEdmNavigationSource targetNavigationSource = path == null ? null : path.NavigationSource;
// serialize a response
string preferHeader = RequestPreferenceHelpers.GetRequestPreferHeader(internalRequestHeaders);
string annotationFilter = null;
if (!String.IsNullOrEmpty(preferHeader))
{
ODataMessageWrapper messageWrapper = getODataMessageWrapper(null);
messageWrapper.SetHeader(RequestPreferenceHelpers.PreferHeaderName, preferHeader);
annotationFilter = messageWrapper.PreferHeader().AnnotationFilter;
}
IODataResponseMessage responseMessage = getODataMessageWrapper(internalRequest.RequestContainer);
if (annotationFilter != null)
{
responseMessage.PreferenceAppliedHeader().AnnotationFilter = annotationFilter;
}
ODataMessageWriterSettings writerSettings = internalRequest.WriterSettings;
writerSettings.BaseUri = baseAddress;
writerSettings.Version = version;
writerSettings.Validations = writerSettings.Validations & ~ValidationKinds.ThrowOnUndeclaredPropertyForNonOpenType;
string metadataLink = internaUrlHelper.CreateODataLink(MetadataSegment.Instance);
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
//Set this variable if the SelectExpandClause is different from the processed clause on the Query options
SelectExpandClause selectExpandDifferentFromQueryOptions = null;
if (internalRequest.Context.QueryOptions != null && internalRequest.Context.QueryOptions.SelectExpand != null)
{
if (internalRequest.Context.QueryOptions.SelectExpand.ProcessedSelectExpandClause != internalRequest.Context.ProcessedSelectExpandClause)
{
selectExpandDifferentFromQueryOptions = internalRequest.Context.ProcessedSelectExpandClause;
}
}
else if (internalRequest.Context.ProcessedSelectExpandClause != null)
{
selectExpandDifferentFromQueryOptions = internalRequest.Context.ProcessedSelectExpandClause;
}
writerSettings.ODataUri = new ODataUri
{
ServiceRoot = baseAddress,
SelectAndExpand = internalRequest.Context.ProcessedSelectExpandClause,
Apply = internalRequest.Context.ApplyClause,
Path = ConvertPath(path),
};
ODataMetadataLevel metadataLevel = ODataMetadataLevel.MinimalMetadata;
if (contentType != null)
{
IEnumerable <KeyValuePair <string, string> > parameters =
contentType.Parameters.Select(val => new KeyValuePair <string, string>(val.Name, val.Value));
metadataLevel = ODataMediaTypes.GetMetadataLevel(contentType.MediaType, parameters);
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = getODataSerializerContext();
writeContext.NavigationSource = targetNavigationSource;
writeContext.Model = model;
writeContext.RootElementName = GetRootElementName(path) ?? "root";
writeContext.SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.ResourceSet;
writeContext.Path = path;
writeContext.MetadataLevel = metadataLevel;
writeContext.QueryOptions = internalRequest.Context.QueryOptions;
//Set the SelectExpandClause on the context if it was explicitly specified.
if (selectExpandDifferentFromQueryOptions != null)
{
writeContext.SelectExpandClause = selectExpandDifferentFromQueryOptions;
}
serializer.WriteObject(value, type, messageWriter, writeContext);
}
}
public override Task WriteToStreamAsync(Type type, object value, Stream writeStream, HttpContent content, TransportContext transportContext)
{
if (type == null)
{
throw Error.ArgumentNull("type");
}
if (writeStream == null)
{
throw Error.ArgumentNull("writeStream");
}
HttpContentHeaders contentHeaders = content == null ? null : content.Headers;
return(TaskHelpers.RunSynchronously(() =>
{
// Get the format and version to use from the ODataServiceVersion content header or if not available use the
// values configured for the specialized formatter instance.
ODataVersion version;
ODataFormat odataFormat;
if (contentHeaders == null)
{
version = _defaultODataVersion;
odataFormat = ODataFormatterConstants.DefaultODataFormat;
}
else
{
version = GetODataVersion(contentHeaders, ODataFormatterConstants.ODataServiceVersion) ?? _defaultODataVersion;
odataFormat = GetODataFormat(contentHeaders);
}
ODataSerializer serializer = ODataSerializerProvider.GetODataPayloadSerializer(type);
if (serializer == null)
{
throw Error.InvalidOperation(SRResources.TypeCannotBeSerialized, type.Name, typeof(ODataMediaTypeFormatter).Name);
}
if (IsClient)
{
// TODO: Bug 467617: figure out the story for the operation name on the client side and server side.
string operationName = (value != null ? value.GetType() : type).Name;
// serialize a request
IODataRequestMessage requestMessage = new ODataMessageWrapper(writeStream);
ODataResponseContext responseContext = new ODataResponseContext(requestMessage, odataFormat, version, new Uri(ODataFormatterConstants.DefaultNamespace), operationName);
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings()
{
BaseUri = responseContext.BaseAddress,
Version = responseContext.ODataVersion,
Indent = responseContext.IsIndented,
DisableMessageStreamDisposal = true,
};
writerSettings.SetContentType(responseContext.ODataFormat);
using (ODataMessageWriter messageWriter = new ODataMessageWriter(requestMessage, writerSettings, Model))
{
ODataSerializerWriteContext writeContext = new ODataSerializerWriteContext(responseContext);
serializer.WriteObject(value, messageWriter, writeContext);
}
}
else
{
UrlHelper urlHelper = Request.GetUrlHelper();
NameValueCollection queryStringValues = Request.RequestUri.ParseQueryString();
IEdmEntitySet targetEntitySet = null;
ODataUriHelpers.TryGetEntitySetAndEntityType(Request.RequestUri, Model, out targetEntitySet);
ODataQueryProjectionNode rootProjectionNode = null;
if (targetEntitySet != null)
{
// TODO: Bug 467621: Move to ODataUriParser once it is done.
rootProjectionNode = ODataUriHelpers.GetODataQueryProjectionNode(queryStringValues["$select"], queryStringValues["$expand"], targetEntitySet);
}
// serialize a response
Uri baseAddress = new Uri(Request.RequestUri, Request.GetConfiguration().VirtualPathRoot);
// TODO: Bug 467617: figure out the story for the operation name on the client side and server side.
// This is clearly a workaround. We are assuming that the operation name is the last segment in the request uri
// which works for most cases and fall back to the type name of the object being written.
// We should rather use uri parser semantic tree to figure out the operation name from the request url.
string operationName = ODataUriHelpers.GetOperationName(Request.RequestUri, baseAddress);
operationName = operationName ?? type.Name;
IODataResponseMessage responseMessage = new ODataMessageWrapper(writeStream);
ODataResponseContext responseContext = new ODataResponseContext(responseMessage, odataFormat, version, baseAddress, operationName);
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings()
{
BaseUri = responseContext.BaseAddress,
Version = responseContext.ODataVersion,
Indent = responseContext.IsIndented,
DisableMessageStreamDisposal = true,
};
if (contentHeaders != null && contentHeaders.ContentType != null)
{
writerSettings.SetContentType(contentHeaders.ContentType.ToString(), Encoding.UTF8.WebName);
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, ODataDeserializerProvider.EdmModel))
{
ODataSerializerWriteContext writeContext = new ODataSerializerWriteContext(responseContext)
{
EntitySet = targetEntitySet,
UrlHelper = urlHelper,
RootProjectionNode = rootProjectionNode,
CurrentProjectionNode = rootProjectionNode
};
serializer.WriteObject(value, messageWriter, writeContext);
}
}
}));
}
private void WriteToStream(Type type, object value, Stream writeStream, HttpContent content, HttpContentHeaders contentHeaders)
{
IEdmModel model = Request.GetEdmModel();
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
ODataSerializer serializer = GetSerializer(type, value, model, _serializerProvider);
UrlHelper urlHelper = Request.GetUrlHelper();
Contract.Assert(urlHelper != null);
ODataPath path = Request.GetODataPath();
IEdmEntitySet targetEntitySet = path == null ? null : path.EntitySet;
// serialize a response
HttpConfiguration configuration = Request.GetConfiguration();
if (configuration == null)
{
throw Error.InvalidOperation(SRResources.RequestMustContainConfiguration);
}
IODataResponseMessage responseMessage = new ODataMessageWrapper(writeStream, content.Headers);
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings(MessageWriterSettings)
{
BaseUri = GetBaseAddress(Request),
Version = _version,
};
// The MetadataDocumentUri is never required for errors. Additionally, it sometimes won't be available
// for errors, such as when routing itself fails. In that case, the route data property is not
// available on the request, and due to a bug with HttpRoute.GetVirtualPath (bug #669) we won't be able
// to generate a metadata link.
if (serializer.ODataPayloadKind != ODataPayloadKind.Error)
{
string metadataLink = urlHelper.ODataLink(new MetadataPathSegment());
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
string selectClause = GetSelectClause(Request);
writerSettings.SetMetadataDocumentUri(new Uri(metadataLink), selectClause);
}
MediaTypeHeaderValue contentType = null;
if (contentHeaders != null && contentHeaders.ContentType != null)
{
contentType = contentHeaders.ContentType;
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
Request = Request,
RequestContext = Request.GetRequestContext(),
Url = urlHelper,
EntitySet = targetEntitySet,
Model = model,
RootElementName = GetRootElementName(path) ?? "root",
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.Feed,
Path = path,
MetadataLevel = ODataMediaTypes.GetMetadataLevel(contentType),
SelectExpandClause = Request.GetSelectExpandClause()
};
serializer.WriteObject(value, type, messageWriter, writeContext);
}
}
private void WriteResponseBody(OutputFormatterWriteContext context)
{
HttpContext httpContext = context.HttpContext;
HttpRequest request = context.HttpContext.Request;
HttpResponse response = context.HttpContext.Response;
IEdmModel model = context.HttpContext.ODataFeature().Model;
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
object value = null;
object graph = null;
var objectResult = context.Object as PageResult <object>;
if (objectResult != null)
{
value = objectResult.Items;
graph = objectResult;
}
else
{
value = context.Object;
graph = value;
}
var type = value.GetType();
ODataSerializer serializer = GetSerializer(type, value, context);
IUrlHelper urlHelper = context.HttpContext.UrlHelper();
ODataPath path = httpContext.ODataFeature().Path;
IEdmNavigationSource targetNavigationSource = path == null ? null : path.NavigationSource;
string preferHeader = RequestPreferenceHelpers.GetRequestPreferHeader(request);
string annotationFilter = null;
if (!String.IsNullOrEmpty(preferHeader))
{
ODataMessageWrapper messageWrapper = new ODataMessageWrapper(response.Body, response.Headers);
messageWrapper.SetHeader(RequestPreferenceHelpers.PreferHeaderName, preferHeader);
annotationFilter = messageWrapper.PreferHeader().AnnotationFilter;
}
IODataResponseMessage responseMessage = new ODataMessageWrapper(response.Body, response.Headers);
if (annotationFilter != null)
{
responseMessage.PreferenceAppliedHeader().AnnotationFilter = annotationFilter;
}
Uri baseAddress = GetBaseAddress(request);
ODataMessageWriterSettings writerSettings = _messageWriterSettings.Clone();
writerSettings.BaseUri = baseAddress;
writerSettings.Version = ODataVersion.V4;
writerSettings.Validations = writerSettings.Validations & ~ValidationKinds.ThrowOnUndeclaredPropertyForNonOpenType;
string metadataLink = urlHelper.CreateODataLink(request, MetadataSegment.Instance);
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
writerSettings.ODataUri = new ODataUri
{
ServiceRoot = baseAddress,
// TODO: 1604 Convert webapi.odata's ODataPath to ODL's ODataPath, or use ODL's ODataPath.
SelectAndExpand = httpContext.ODataFeature().SelectExpandClause,
Path = (path == null) ? null : path.ODLPath
//Path = (path == null || IsOperationPath(path)) ? null : path.ODLPath,
};
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
Context = context.HttpContext,
Url = urlHelper,
NavigationSource = targetNavigationSource,
Model = model,
RootElementName = GetRootElementName(path) ?? "root",
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.ResourceSet,
Path = path,
MetadataLevel = ODataMediaTypes.GetMetadataLevel(MediaTypeHeaderValue.Parse(context.ContentType.Value)),
SelectExpandClause = request.ODataFeature().SelectExpandClause,
};
serializer.WriteObject(graph, type, messageWriter, writeContext);
}
}
internal static void WriteToStream(
Type type,
object value,
IEdmModel model,
ODataVersion version,
Uri baseAddress,
MediaTypeHeaderValue contentType,
HttpRequest request,
IHeaderDictionary requestHeaders,
ODataSerializerProvider serializerProvider)
{
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
ODataSerializer serializer = GetSerializer(type, value, request, serializerProvider);
ODataPath path = request.ODataFeature().Path;
IEdmNavigationSource targetNavigationSource = path == null ? null : path.GetNavigationSource();
HttpResponse response = request.HttpContext.Response;
// serialize a response
string preferHeader = RequestPreferenceHelpers.GetRequestPreferHeader(requestHeaders);
string annotationFilter = null;
if (!string.IsNullOrEmpty(preferHeader))
{
ODataMessageWrapper messageWrapper = ODataMessageWrapperHelper.Create(response.Body, response.Headers);
messageWrapper.SetHeader(RequestPreferenceHelpers.PreferHeaderName, preferHeader);
annotationFilter = messageWrapper.PreferHeader().AnnotationFilter;
}
IODataResponseMessage responseMessage = ODataMessageWrapperHelper.Create(response.Body, response.Headers, request.GetSubServiceProvider());
if (annotationFilter != null)
{
responseMessage.PreferenceAppliedHeader().AnnotationFilter = annotationFilter;
}
ODataMessageWriterSettings writerSettings = request.GetWriterSettings();
writerSettings.BaseUri = baseAddress;
writerSettings.Version = version;
writerSettings.Validations = writerSettings.Validations & ~ValidationKinds.ThrowOnUndeclaredPropertyForNonOpenType;
string metadataLink = request.CreateODataLink(MetadataSegment.Instance);
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
// Set this variable if the SelectExpandClause is different from the processed clause on the Query options
SelectExpandClause selectExpandDifferentFromQueryOptions = null;
ODataQueryOptions queryOptions = request.GetQueryOptions();
SelectExpandClause processedSelectExpandClause = request.ODataFeature().SelectExpandClause;
if (queryOptions != null && queryOptions.SelectExpand != null)
{
if (queryOptions.SelectExpand.ProcessedSelectExpandClause != processedSelectExpandClause)
{
selectExpandDifferentFromQueryOptions = processedSelectExpandClause;
}
}
else if (processedSelectExpandClause != null)
{
selectExpandDifferentFromQueryOptions = processedSelectExpandClause;
}
writerSettings.ODataUri = new ODataUri
{
ServiceRoot = baseAddress,
// TODO: 1604 Convert webapi.odata's ODataPath to ODL's ODataPath, or use ODL's ODataPath.
SelectAndExpand = processedSelectExpandClause,
Apply = request.ODataFeature().ApplyClause,
//Path = (path == null || IsOperationPath(path)) ? null : path.Path,
Path = path
};
ODataMetadataLevel metadataLevel = ODataMetadataLevel.Minimal;
if (contentType != null)
{
IEnumerable <KeyValuePair <string, string> > parameters =
contentType.Parameters.Select(val => new KeyValuePair <string, string>(val.Name.ToString(),
val.Value.ToString()));
metadataLevel = ODataMediaTypes.GetMetadataLevel(contentType.MediaType.ToString(), parameters);
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = BuildSerializerContext(request);
writeContext.NavigationSource = targetNavigationSource;
writeContext.Model = model;
writeContext.RootElementName = GetRootElementName(path) ?? "root";
writeContext.SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.ResourceSet;
writeContext.Path = path;
writeContext.MetadataLevel = metadataLevel;
writeContext.QueryOptions = queryOptions;
//Set the SelectExpandClause on the context if it was explicitly specified.
if (selectExpandDifferentFromQueryOptions != null)
{
writeContext.SelectExpandClause = selectExpandDifferentFromQueryOptions;
}
serializer.WriteObject(value, type, messageWriter, writeContext);
}
}
public void WriteJson(object value, Stream writeStream)
{
IEdmModel model = _odataProperties.Model;
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
var type = value.GetType();
type = _context.ObjectType;
ODataSerializer serializer = GetSerializer(type, value, model, DefaultODataSerializerProvider.Instance);
var urlHelper = UrlHelper(_context.HttpContext);
ODataPath path = Request.ODataProperties().Path;
IEdmNavigationSource targetNavigationSource = path == null ? null : path.NavigationSource;
// serialize a response
//HttpConfiguration configuration = Request.GetConfiguration();
//if (configuration == null)
//{
// throw Error.InvalidOperation(SRResources.RequestMustContainConfiguration);
//}
// TODO: Fix this ffs...
string preferHeader = RequestPreferenceHelpers.GetRequestPreferHeader(Request);
string annotationFilter = null;
if (ODataCountMediaTypeMapping.IsCountRequest(Request))
{
Response.ContentType = "text/plain";
}
if (!String.IsNullOrEmpty(preferHeader))
{
ODataMessageWrapper messageWrapper = new ODataMessageWrapper(writeStream, Response.Headers);
messageWrapper.SetHeader(RequestPreferenceHelpers.PreferHeaderName, preferHeader);
annotationFilter = messageWrapper.PreferHeader().AnnotationFilter;
}
IODataResponseMessage responseMessage = new ODataMessageWrapper(writeStream, Response.Headers);
if (annotationFilter != null)
{
responseMessage.PreferenceAppliedHeader().AnnotationFilter = annotationFilter;
}
Uri baseAddress = GetBaseAddress();
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings(MessageWriterSettings)
{
PayloadBaseUri = baseAddress,
Version = _version,
};
writerSettings.ODataUri = new ODataUri
{
ServiceRoot = baseAddress,
// TODO: 1604 Convert webapi.odata's ODataPath to ODL's ODataPath, or use ODL's ODataPath.
SelectAndExpand = Request.ODataProperties().SelectExpandClause,
// TODO: Support $apply
//Apply = Request.ODataProperties().ApplyClause,
Path = (path == null || IsOperationPath(path)) ? null : path.ODLPath,
};
MediaTypeHeaderValue contentType = null;
// TODO: Restore
//if (contentHeaders != null && contentHeaders.ContentType != null)
//{
// contentType = contentHeaders.ContentType;
//}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
Request = Request,
RequestContext = _context.HttpContext,
Url = urlHelper,
NavigationSource = targetNavigationSource,
Model = model,
RootElementName = GetRootElementName(path) ?? "root",
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.Feed,
Path = path,
MetadataLevel = ODataMediaTypes.GetMetadataLevel(contentType),
SelectExpandClause = Request.ODataProperties().SelectExpandClause
};
serializer.WriteObject(value, type, messageWriter, writeContext);
}
}
public override Task WriteToStreamAsync(Type type, object value, Stream writeStream, HttpContent content, TransportContext transportContext)
{
if (type == null)
{
throw Error.ArgumentNull("type");
}
if (writeStream == null)
{
throw Error.ArgumentNull("writeStream");
}
if (_request == null)
{
throw Error.InvalidOperation(SRResources.WriteToStreamAsyncMustHaveRequest);
}
HttpContentHeaders contentHeaders = content == null ? null : content.Headers;
return(TaskHelpers.RunSynchronously(() =>
{
// get the most appropriate serializer given that we support inheritance.
IEdmModel model = _request.GetEdmModel();
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
type = value == null ? type : value.GetType();
ODataSerializer serializer = _serializerProvider.GetODataPayloadSerializer(model, type);
if (serializer == null)
{
string message = Error.Format(SRResources.TypeCannotBeSerialized, type.Name, typeof(ODataMediaTypeFormatter).Name);
throw new SerializationException(message);
}
UrlHelper urlHelper = _request.GetUrlHelper();
Contract.Assert(urlHelper != null);
ODataPath path = _request.GetODataPath();
IEdmEntitySet targetEntitySet = path == null ? null : path.EntitySet;
// serialize a response
HttpConfiguration configuration = _request.GetConfiguration();
if (configuration == null)
{
throw Error.InvalidOperation(SRResources.RequestMustContainConfiguration);
}
IODataResponseMessage responseMessage = new ODataMessageWrapper(writeStream, content.Headers);
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings()
{
BaseUri = GetBaseAddress(_request),
Version = _version,
Indent = true,
DisableMessageStreamDisposal = true,
MessageQuotas = MessageWriterQuotas
};
// The MetadataDocumentUri is never required for errors. Additionally, it sometimes won't be available
// for errors, such as when routing itself fails. In that case, the route data property is not
// available on the request, and due to a bug with HttpRoute.GetVirtualPath (bug #669) we won't be able
// to generate a metadata link.
if (serializer.ODataPayloadKind != ODataPayloadKind.Error)
{
string metadataLink = urlHelper.ODataLink(new MetadataPathSegment());
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
writerSettings.SetMetadataDocumentUri(new Uri(metadataLink));
}
MediaTypeHeaderValue contentType = null;
if (contentHeaders != null && contentHeaders.ContentType != null)
{
contentType = contentHeaders.ContentType;
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
Request = _request,
Url = urlHelper,
EntitySet = targetEntitySet,
Model = model,
RootElementName = GetRootElementName(path) ?? "root",
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.Feed,
Path = path,
MetadataLevel = ODataMediaTypes.GetMetadataLevel(contentType),
};
serializer.WriteObject(value, messageWriter, writeContext);
}
}));
}
public override Task WriteToStreamAsync(Type type, object value, Stream writeStream, HttpContent content, TransportContext transportContext)
{
if (type == null)
{
throw Error.ArgumentNull("type");
}
if (writeStream == null)
{
throw Error.ArgumentNull("writeStream");
}
if (_request == null)
{
throw Error.NotSupported(SRResources.WriteToStreamAsyncMustHaveRequest);
}
HttpContentHeaders contentHeaders = content == null ? null : content.Headers;
return(TaskHelpers.RunSynchronously(() =>
{
// get the most appropriate serializer given that we support inheritance.
type = value == null ? type : value.GetType();
ODataSerializer serializer = _serializerProvider.GetODataPayloadSerializer(type);
if (serializer == null)
{
throw Error.InvalidOperation(SRResources.TypeCannotBeSerialized, type.Name, typeof(ODataMediaTypeFormatter).Name);
}
UrlHelper urlHelper = _request.GetUrlHelper();
ODataPath path = _request.GetODataPath();
IEdmEntitySet targetEntitySet = path == null ? null : path.EntitySet;
// serialize a response
HttpConfiguration configuration = _request.GetConfiguration();
Uri baseAddress = new Uri(_request.RequestUri, configuration.VirtualPathRoot);
IODataResponseMessage responseMessage = new ODataMessageWrapper(writeStream);
// TODO: Issue 483: http://aspnetwebstack.codeplex.com/workitem/483
// We need to set the MetadataDocumentUri when this property is added to ODataMessageWriterSettings as
// part of the JSON Light work.
// This is required so ODataLib can coerce AbsoluteUri's into RelativeUri's when appropriate in JSON Light.
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings()
{
BaseUri = baseAddress,
Version = _version,
Indent = true,
DisableMessageStreamDisposal = true
};
if (contentHeaders != null && contentHeaders.ContentType != null)
{
MediaTypeHeaderValue contentType = contentHeaders.ContentType;
writerSettings.SetContentType(contentType.ToString(), contentType.CharSet);
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, _deserializerProvider.EdmModel))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
EntitySet = targetEntitySet,
UrlHelper = urlHelper,
PathHandler = configuration.GetODataPathHandler() ?? new DefaultODataPathHandler(Model),
RootElementName = GetRootElementName(path) ?? ElementNameDefault,
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.Feed,
Request = _request
};
serializer.WriteObject(value, messageWriter, writeContext);
}
}));
}
public override void WriteObject(object graph, Type type, ODataMessageWriter messageWriter, ODataSerializerContext writeContext)
{
_logger.LogDebug("[ODataPayloadSerializer.WriteObject] type: " + type);
_serializer.WriteObject(graph, type, messageWriter, writeContext);
}
private void WriteToStream(Type type, object value, Stream writeStream, HttpContent content, HttpContentHeaders contentHeaders)
{
IEdmModel model = Request.ODataProperties().Model;
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
ODataSerializer serializer = GetSerializer(type, value, model, _serializerProvider);
UrlHelper urlHelper = Request.GetUrlHelper() ?? new UrlHelper(Request);
ODataPath path = Request.ODataProperties().Path;
IEdmEntitySet targetEntitySet = path == null ? null : path.EntitySet;
// serialize a response
HttpConfiguration configuration = Request.GetConfiguration();
if (configuration == null)
{
throw Error.InvalidOperation(SRResources.RequestMustContainConfiguration);
}
IODataResponseMessage responseMessage = new ODataMessageWrapper(writeStream, content.Headers);
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings(MessageWriterSettings)
{
PayloadBaseUri = GetBaseAddress(Request),
Version = _version,
};
string metadataLink = urlHelper.CreateODataLink(new MetadataPathSegment());
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
string resourcePath = path != null?path.ToString() : String.Empty;
Uri baseAddress = GetBaseAddress(Request);
writerSettings.SetServiceDocumentUri(
baseAddress,
Request.ODataProperties().SelectExpandClause,
resourcePath,
isIndividualProperty: false);
writerSettings.ODataUri = new ODataUri
{
ServiceRoot = baseAddress,
// TODO: 1604 Convert webapi.odata's ODataPath to ODL's ODataPath, or use ODL's ODataPath.
};
MediaTypeHeaderValue contentType = null;
if (contentHeaders != null && contentHeaders.ContentType != null)
{
contentType = contentHeaders.ContentType;
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
Request = Request,
RequestContext = Request.GetRequestContext(),
Url = urlHelper,
EntitySet = targetEntitySet,
Model = model,
RootElementName = GetRootElementName(path) ?? "root",
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.Feed,
Path = path,
MetadataLevel = ODataMediaTypes.GetMetadataLevel(contentType),
SelectExpandClause = Request.ODataProperties().SelectExpandClause
};
serializer.WriteObject(value, type, messageWriter, writeContext);
}
}
public override Task WriteToStreamAsync(Type type, object value, Stream writeStream, HttpContent content, TransportContext transportContext)
{
if (type == null)
{
throw Error.ArgumentNull("type");
}
if (writeStream == null)
{
throw Error.ArgumentNull("writeStream");
}
if (Request == null)
{
throw Error.NotSupported(SRResources.WriteToStreamAsyncMustHaveRequest);
}
HttpContentHeaders contentHeaders = content == null ? null : content.Headers;
return(TaskHelpers.RunSynchronously(() =>
{
// Get the format and version to use from the ODataServiceVersion content header or if not available use the
// values configured for the specialized formatter instance.
ODataVersion version;
if (contentHeaders == null)
{
version = _defaultODataVersion;
}
else
{
version = GetODataVersion(contentHeaders, ODataFormatterConstants.ODataServiceVersion) ?? _defaultODataVersion;
}
// get the most appropriate serializer given that we support inheritance.
type = value == null ? type : value.GetType();
ODataSerializer serializer = ODataSerializerProvider.GetODataPayloadSerializer(type);
if (serializer == null)
{
throw Error.InvalidOperation(SRResources.TypeCannotBeSerialized, type.Name, typeof(ODataMediaTypeFormatter).Name);
}
UrlHelper urlHelper = Request.GetUrlHelper();
IEdmEntitySet targetEntitySet = null;
ODataUriHelpers.TryGetEntitySetAndEntityType(Request.RequestUri, Model, out targetEntitySet);
// serialize a response
Uri baseAddress = new Uri(Request.RequestUri, Request.GetConfiguration().VirtualPathRoot);
// TODO: Bug 467617: figure out the story for the operation name on the client side and server side.
// This is clearly a workaround. We are assuming that the operation name is the last segment in the request uri
// which works for most cases and fall back to the type name of the object being written.
// We should rather use uri parser semantic tree to figure out the operation name from the request url.
string operationName = ODataUriHelpers.GetOperationName(Request.RequestUri, baseAddress);
operationName = operationName ?? type.Name;
IODataResponseMessage responseMessage = new ODataMessageWrapper(writeStream);
// TODO: Issue 483: http://aspnetwebstack.codeplex.com/workitem/483
// We need to set the MetadataDocumentUri when this property is added to ODataMessageWriterSettings as
// part of the JSON Light work.
// This is required so ODataLib can coerce AbsoluteUri's into RelativeUri's when appropriate in JSON Light.
ODataMessageWriterSettings writerSettings = new ODataMessageWriterSettings()
{
BaseUri = baseAddress,
Version = version,
Indent = true,
DisableMessageStreamDisposal = true
};
if (contentHeaders != null && contentHeaders.ContentType != null)
{
writerSettings.SetContentType(contentHeaders.ContentType.ToString(), Encoding.UTF8.WebName);
}
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, ODataDeserializerProvider.EdmModel))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
EntitySet = targetEntitySet,
UrlHelper = urlHelper,
ServiceOperationName = operationName,
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.Feed,
Request = Request
};
serializer.WriteObject(value, messageWriter, writeContext);
}
}));
}
private void WriteResponseBody(OutputFormatterWriteContext context)
{
HttpContext httpContext = context.HttpContext;
HttpRequest request = context.HttpContext.Request;
HttpResponse response = context.HttpContext.Response;
IEdmModel model = context.HttpContext.ODataFeature().Model;
if (model == null)
{
throw Error.InvalidOperation(SRResources.RequestMustHaveModel);
}
object value = null;
object graph = null;
var objectResult = context.Object as PageResult <object>;
if (objectResult != null)
{
value = objectResult.Items;
graph = objectResult;
}
else
{
value = context.Object;
graph = value;
}
var type = value.GetType();
ODataSerializer serializer = GetSerializer(type, value, context);
IUrlHelper urlHelper = context.HttpContext.UrlHelper();
ODataPath path = httpContext.ODataFeature().Path;
IEdmNavigationSource targetNavigationSource = path == null ? null : path.NavigationSource;
string preferHeader = RequestPreferenceHelpers.GetRequestPreferHeader(request);
string annotationFilter = null;
if (!String.IsNullOrEmpty(preferHeader))
{
ODataMessageWrapper messageWrapper = new ODataMessageWrapper(response.Body, response.Headers);
messageWrapper.SetHeader(RequestPreferenceHelpers.PreferHeaderName, preferHeader);
annotationFilter = messageWrapper.PreferHeader().AnnotationFilter;
}
IODataResponseMessage responseMessage = new ODataMessageWrapper(response.Body, response.Headers);
if (annotationFilter != null)
{
responseMessage.PreferenceAppliedHeader().AnnotationFilter = annotationFilter;
}
Uri baseAddress = GetBaseAddress(request);
ODataMessageWriterSettings writerSettings = _messageWriterSettings.Clone();
writerSettings.BaseUri = baseAddress;
writerSettings.Version = ODataVersion.V4;
writerSettings.Validations = writerSettings.Validations & ~ValidationKinds.ThrowOnUndeclaredPropertyForNonOpenType;
string metadataLink = urlHelper.CreateODataLink(request, MetadataSegment.Instance);
if (metadataLink == null)
{
throw new SerializationException(SRResources.UnableToDetermineMetadataUrl);
}
writerSettings.ODataUri = new ODataUri
{
ServiceRoot = baseAddress,
// TODO: 1604 Convert webapi.odata's ODataPath to ODL's ODataPath, or use ODL's ODataPath.
SelectAndExpand = httpContext.ODataFeature().SelectExpandClause,
Path = (path == null) ? null : path.ODLPath
//Path = (path == null || IsOperationPath(path)) ? null : path.ODLPath,
};
#region 为OData添加缓存 使用的EF二级缓存 这里是先从缓存获取数据
//var queryResult = graph as IQueryable;
//PageResult<object> target = null;
//if (queryResult == null)
//{
// target = graph as PageResult<object>;
// if (target != null) queryResult = target.Items.AsQueryable();
//}
//var isReadCache = queryResult != null || target != null;
//var cacheValue = isReadCache?queryResult.CacheResult(context.HttpContext.RequestServices):null;
//if (isReadCache&&target != null && cacheValue != null)
//{
// var pageResult = cacheValue as IEnumerable<object>;
// //long? count = target.Count.HasValue ? (long?)pageResult.LongCount() : null;
// cacheValue = new PageResult<object>(pageResult, null, target.Count);
//}
//if (isReadCache&&cacheValue != null) graph = cacheValue;
#endregion
using (ODataMessageWriter messageWriter = new ODataMessageWriter(responseMessage, writerSettings, model))
{
ODataSerializerContext writeContext = new ODataSerializerContext()
{
Context = context.HttpContext,
Url = urlHelper,
NavigationSource = targetNavigationSource,
Model = model,
RootElementName = GetRootElementName(path) ?? "root",
SkipExpensiveAvailabilityChecks = serializer.ODataPayloadKind == ODataPayloadKind.ResourceSet,
Path = path,
MetadataLevel = ODataMediaTypes.GetMetadataLevel(MediaTypeHeaderValue.Parse(context.ContentType.Value)),
SelectExpandClause = request.ODataFeature().SelectExpandClause,
};
serializer.WriteObject(graph, type, messageWriter, writeContext);
#region 这里是往缓存中 存储数据
//if (isReadCache&&cacheValue == null)
//{
// writeContext.Context.Response.Body.Position = 0;
// StreamReader reder = new StreamReader(writeContext.Context.Response.Body);
// var bodyStr = reder.ReadToEnd();
// JObject.Parse(bodyStr).TryGetValue("value",out JToken values);
// cacheValue = values.ToObject(type.MarkListType());
// queryResult.CacheQuerable(cacheValue, writeContext.Context.RequestServices);
//}
#endregion
}
}