/// <summary>
/// Creates an ODataEntry for the given EntityDescriptor and fills in its ODataLib metadata.
/// </summary>
/// <param name="entityDescriptor">The entity descriptor.</param>
/// <param name="serverTypeName">Name of the server type.</param>
/// <param name="entityType">The client-side entity type.</param>
/// <param name="clientFormat">The current client format.</param>
/// <returns>An odata entry with its metadata filled in.</returns>
internal static ODataEntry CreateODataEntry(EntityDescriptor entityDescriptor, string serverTypeName, ClientTypeAnnotation entityType, DataServiceClientFormat clientFormat)
{
ODataEntry entry = new ODataEntry();
// If the client type name is different from the server type name, then add SerializationTypeNameAnnotation
// which tells ODataLib to write the type name in the annotation in the payload.
if (entityType.ElementTypeName != serverTypeName)
{
entry.SetAnnotation(new SerializationTypeNameAnnotation {
TypeName = serverTypeName
});
}
// We always need to write the client type name, since this is the type name used by ODataLib
// to resolve the entity type using EdmModel.FindSchemaElement.
entry.TypeName = entityType.ElementTypeName;
// Continue to send the entry's ID in update payloads in Atom for compatibility with V1-V3,
// but for JSON-Light we do not want the extra information on the wire.
if (clientFormat.UsingAtom && EntityStates.Modified == entityDescriptor.State)
{
// <id>http://host/service/entityset(key)</id>
entry.Id = entityDescriptor.GetLatestIdentity();
}
if (entityDescriptor.IsMediaLinkEntry || entityType.IsMediaLinkEntry)
{
// Since we are already enabled EnableWcfDataServicesClientBehavior in the writer settings,
// setting the MediaResource value will tell ODataLib to write MLE payload, irrespective of
// what the metadata says.
entry.MediaResource = new ODataStreamReferenceValue();
}
return(entry);
}
/// <summary>
/// Writes an entity reference link.
/// </summary>
/// <param name="binding">The link descriptor.</param>
/// <param name="requestMessage">The request message used for writing the payload.</param>
internal void WriteEntityReferenceLink(LinkDescriptor binding, ODataRequestMessageWrapper requestMessage)
#endif
{
using (ODataMessageWriter messageWriter = Serializer.CreateMessageWriter(requestMessage, this.requestInfo, false /*isParameterPayload*/))
{
EntityDescriptor targetResource = this.requestInfo.EntityTracker.GetEntityDescriptor(binding.Target);
Uri targetResourceEditLink;
if (null != targetResource.GetLatestIdentity())
{
// When we write the uri in the payload, we need to make sure that we write the edit
// link in the payload, since the request uri is the edit link of the parent entity.
// Think of a read/write service - since the uri is the target link to the parent entity
// its better that we write the edit link of the child entity in the payload.
targetResourceEditLink = targetResource.GetResourceUri(this.requestInfo.BaseUriResolver, false /*queryLink*/);
}
else
{
#if DEBUG
Debug.Assert(isBatch, "we should be cross-referencing entities only in batch scenarios");
#endif
targetResourceEditLink = UriUtil.CreateUri("$" + targetResource.ChangeOrder.ToString(CultureInfo.InvariantCulture), UriKind.Relative);
}
ODataEntityReferenceLink referenceLink = new ODataEntityReferenceLink();
referenceLink.Url = targetResourceEditLink;
messageWriter.WriteEntityReferenceLink(referenceLink);
}
}
protected ODataRequestMessageWrapper CreateRequest(LinkDescriptor binding)
{
if (binding.ContentGeneratedForSave)
{
return(null);
}
EntityDescriptor entityDescriptor = this.RequestInfo.EntityTracker.GetEntityDescriptor(binding.Source);
EntityDescriptor descriptor2 = (binding.Target != null) ? this.RequestInfo.EntityTracker.GetEntityDescriptor(binding.Target) : null;
Uri requestUri = null;
if (entityDescriptor.GetLatestIdentity() == null)
{
if (!this.IsBatch)
{
binding.ContentGeneratedForSave = true;
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Context_LinkResourceInsertFailure, entityDescriptor.SaveError);
}
Uri uri = this.CreateRequestRelativeUri(binding);
requestUri = Util.CreateUri("$" + entityDescriptor.ChangeOrder.ToString(CultureInfo.InvariantCulture) + "/" + CommonUtil.UriToString(uri), UriKind.Relative);
}
else
{
if ((!this.IsBatch && (descriptor2 != null)) && (descriptor2.GetLatestIdentity() == null))
{
binding.ContentGeneratedForSave = true;
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Context_LinkResourceInsertFailure, descriptor2.SaveError);
}
requestUri = this.CreateRequestUri(entityDescriptor, binding);
}
ODataRequestMessageWrapper requestMessage = this.CreateRequestMessage(requestUri, GetLinkHttpMethod(binding));
if (this.IsBatch)
{
requestMessage.SetHeader("Content-ID", binding.ChangeOrder.ToString(CultureInfo.InvariantCulture));
}
if ((EntityStates.Added == binding.State) || ((EntityStates.Modified == binding.State) && (binding.Target != null)))
{
requestMessage.SetHeader("Content-Type", "application/xml");
}
WebUtil.SetOperationVersionHeaders(requestMessage, Util.DataServiceVersion1, this.RequestInfo.MaxProtocolVersionAsVersion);
return(requestMessage);
}
internal void WriteEntityReferenceLink(LinkDescriptor binding, ODataRequestMessageWrapper requestMessage)
{
using (ODataMessageWriter writer = CreateMessageWriter(requestMessage, this.requestInfo))
{
Uri resourceUri;
EntityDescriptor entityDescriptor = this.requestInfo.EntityTracker.GetEntityDescriptor(binding.Target);
if (entityDescriptor.GetLatestIdentity() != null)
{
resourceUri = entityDescriptor.GetResourceUri(this.requestInfo.BaseUriResolver, false);
}
else
{
resourceUri = Util.CreateUri("$" + entityDescriptor.ChangeOrder.ToString(CultureInfo.InvariantCulture), UriKind.Relative);
}
ODataEntityReferenceLink link = new ODataEntityReferenceLink {
Url = resourceUri
};
writer.WriteEntityReferenceLink(link);
}
}
internal void WriteEntry(EntityDescriptor entityDescriptor, IEnumerable <LinkDescriptor> relatedLinks, ODataRequestMessageWrapper requestMessage)
{
ClientEdmModel model = ClientEdmModel.GetModel(this.requestInfo.MaxProtocolVersion);
ClientTypeAnnotation clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(entityDescriptor.Entity.GetType()));
using (ODataMessageWriter writer = CreateMessageWriter(requestMessage, this.requestInfo))
{
ODataWriter odataWriter = writer.CreateODataEntryWriter();
ODataEntry entry = new ODataEntry();
if (this.requestInfo.HasWritingEventHandlers)
{
entry.SetAnnotation <WritingEntityInfo>(new WritingEntityInfo(entityDescriptor.Entity, this.requestInfo));
}
string serverTypeName = this.requestInfo.GetServerTypeName(entityDescriptor);
if (clientTypeAnnotation.ElementTypeName != serverTypeName)
{
SerializationTypeNameAnnotation annotation = new SerializationTypeNameAnnotation {
TypeName = serverTypeName
};
entry.SetAnnotation <SerializationTypeNameAnnotation>(annotation);
}
entry.TypeName = clientTypeAnnotation.ElementTypeName;
if (EntityStates.Modified == entityDescriptor.State)
{
entry.Id = entityDescriptor.GetLatestIdentity();
}
if (entityDescriptor.IsMediaLinkEntry || clientTypeAnnotation.IsMediaLinkEntry)
{
entry.MediaResource = new ODataStreamReferenceValue();
}
odataWriter.WriteStart(entry);
if (EntityStates.Added == entityDescriptor.State)
{
this.WriteNavigationLink(entityDescriptor, relatedLinks, odataWriter);
}
entry.Properties = this.PopulateProperties(clientTypeAnnotation, entityDescriptor.Entity, null);
odataWriter.WriteEnd();
}
}
internal void WriteEntry(EntityDescriptor entityDescriptor, IEnumerable<LinkDescriptor> relatedLinks, ODataRequestMessageWrapper requestMessage)
{
ClientEdmModel model = ClientEdmModel.GetModel(this.requestInfo.MaxProtocolVersion);
ClientTypeAnnotation clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(entityDescriptor.Entity.GetType()));
using (ODataMessageWriter writer = CreateMessageWriter(requestMessage, this.requestInfo))
{
ODataWriter odataWriter = writer.CreateODataEntryWriter();
ODataEntry entry = new ODataEntry();
if (this.requestInfo.HasWritingEventHandlers)
{
entry.SetAnnotation<WritingEntityInfo>(new WritingEntityInfo(entityDescriptor.Entity, this.requestInfo));
}
string serverTypeName = this.requestInfo.GetServerTypeName(entityDescriptor);
if (clientTypeAnnotation.ElementTypeName != serverTypeName)
{
SerializationTypeNameAnnotation annotation = new SerializationTypeNameAnnotation {
TypeName = serverTypeName
};
entry.SetAnnotation<SerializationTypeNameAnnotation>(annotation);
}
entry.TypeName = clientTypeAnnotation.ElementTypeName;
if (EntityStates.Modified == entityDescriptor.State)
{
entry.Id = entityDescriptor.GetLatestIdentity();
}
if (entityDescriptor.IsMediaLinkEntry || clientTypeAnnotation.IsMediaLinkEntry)
{
entry.MediaResource = new ODataStreamReferenceValue();
}
odataWriter.WriteStart(entry);
if (EntityStates.Added == entityDescriptor.State)
{
this.WriteNavigationLink(entityDescriptor, relatedLinks, odataWriter);
}
entry.Properties = this.PopulateProperties(clientTypeAnnotation, entityDescriptor.Entity, null);
odataWriter.WriteEnd();
}
}
