/// <summary>
/// Write the entry element.
/// </summary>
/// <param name="entityDescriptor">The entity.</param>
/// <param name="relatedLinks">Collection of links related to the entity.</param>
/// <param name="requestMessage">The OData request message.</param>
internal void WriteEntry(EntityDescriptor entityDescriptor, IEnumerable <LinkDescriptor> relatedLinks, ODataRequestMessageWrapper requestMessage)
{
ClientEdmModel model = this.requestInfo.Model;
ClientTypeAnnotation entityType = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(entityDescriptor.Entity.GetType()));
using (ODataMessageWriter messageWriter = Serializer.CreateMessageWriter(requestMessage, this.requestInfo, false /*isParameterPayload*/))
{
ODataWriterWrapper entryWriter = ODataWriterWrapper.CreateForEntry(messageWriter, this.requestInfo.Configurations.RequestPipeline);
// Get the server type name using the type resolver or from the entity descriptor
string serverTypeName = this.requestInfo.GetServerTypeName(entityDescriptor);
var entry = CreateODataEntry(entityDescriptor, serverTypeName, entityType, this.requestInfo.Format);
if (serverTypeName == null)
{
serverTypeName = this.requestInfo.InferServerTypeNameFromServerModel(entityDescriptor);
}
IEnumerable <ClientPropertyAnnotation> properties;
if ((!Util.IsFlagSet(this.options, SaveChangesOptions.ReplaceOnUpdate) &&
entityDescriptor.State == EntityStates.Modified &&
entityDescriptor.PropertiesToSerialize.Any()) ||
(Util.IsFlagSet(this.options, SaveChangesOptions.PostOnlySetProperties) &&
entityDescriptor.State == EntityStates.Added))
{
properties = entityType.PropertiesToSerialize().Where(prop => entityDescriptor.PropertiesToSerialize.Contains(prop.PropertyName));
}
else
{
properties = entityType.PropertiesToSerialize();
}
entry.Properties = this.propertyConverter.PopulateProperties(entityDescriptor.Entity, serverTypeName, properties);
entryWriter.WriteStart(entry, entityDescriptor.Entity);
this.WriteNestedComplexProperties(entityDescriptor.Entity, serverTypeName, properties, entryWriter);
if (EntityStates.Added == entityDescriptor.State)
{
this.WriteNestedResourceInfo(entityDescriptor, relatedLinks, entryWriter);
}
entryWriter.WriteEnd(entry, entityDescriptor.Entity);
}
}
/// <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 targetReferenceLink = targetResource.GetLatestIdentity();
if (targetReferenceLink == null)
{
#if DEBUG
Debug.Assert(isBatch, "we should be cross-referencing entities only in batch scenarios");
#endif
targetReferenceLink = UriUtil.CreateUri("$" + targetResource.ChangeOrder.ToString(CultureInfo.InvariantCulture), UriKind.Relative);
}
ODataEntityReferenceLink referenceLink = new ODataEntityReferenceLink();
referenceLink.Url = targetReferenceLink;
messageWriter.WriteEntityReferenceLink(referenceLink);
}
}
/// <summary>
/// Generate the batch request for all changes to save.
/// </summary>
/// <returns>Returns the instance of ODataRequestMessage containing all the headers and payload for the batch request.</returns>
private ODataRequestMessageWrapper GenerateBatchRequest()
{
if (this.ChangedEntries.Count == 0 && this.Queries == null)
{
this.SetCompleted();
return(null);
}
ODataRequestMessageWrapper batchRequestMessage = this.CreateBatchRequest();
// we need to fire request after the headers have been written, but before we write the payload
batchRequestMessage.FireSendingRequest2(null);
using (ODataMessageWriter messageWriter = Serializer.CreateMessageWriter(batchRequestMessage, this.RequestInfo, false /*isParameterPayload*/))
{
this.batchWriter = messageWriter.CreateODataBatchWriter();
this.batchWriter.WriteStartBatch();
if (this.Queries != null)
{
foreach (DataServiceRequest query in this.Queries)
{
QueryComponents queryComponents = query.QueryComponents(this.RequestInfo.Model);
Uri requestUri = this.RequestInfo.BaseUriResolver.GetOrCreateAbsoluteUri(queryComponents.Uri);
Debug.Assert(requestUri != null, "request uri is null");
Debug.Assert(requestUri.IsAbsoluteUri, "request uri is not absolute uri");
HeaderCollection headers = new HeaderCollection();
headers.SetRequestVersion(queryComponents.Version, this.RequestInfo.MaxProtocolVersionAsVersion);
this.RequestInfo.Format.SetRequestAcceptHeaderForQuery(headers, queryComponents);
ODataRequestMessageWrapper batchOperationRequestMessage = this.CreateRequestMessage(XmlConstants.HttpMethodGet, requestUri, headers, this.RequestInfo.HttpStack, null /*descriptor*/, null /*contentId*/);
batchOperationRequestMessage.FireSendingEventHandlers(null /*descriptor*/);
}
}
else if (0 < this.ChangedEntries.Count)
{
if (Util.IsBatchWithSingleChangeset(this.Options))
{
this.batchWriter.WriteStartChangeset();
}
var model = this.RequestInfo.Model;
for (int i = 0; i < this.ChangedEntries.Count; ++i)
{
if (Util.IsBatchWithIndependentOperations(this.Options))
{
this.batchWriter.WriteStartChangeset();
}
Descriptor descriptor = this.ChangedEntries[i];
if (descriptor.ContentGeneratedForSave)
{
continue;
}
EntityDescriptor entityDescriptor = descriptor as EntityDescriptor;
if (descriptor.DescriptorKind == DescriptorKind.Entity)
{
if (entityDescriptor.State == EntityStates.Added)
{
// We don't support adding MLE/MR in batch mode
ClientTypeAnnotation type = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(entityDescriptor.Entity.GetType()));
if (type.IsMediaLinkEntry || entityDescriptor.IsMediaLinkEntry)
{
throw Error.NotSupported(Strings.Context_BatchNotSupportedForMediaLink);
}
}
else if (entityDescriptor.State == EntityStates.Unchanged || entityDescriptor.State == EntityStates.Modified)
{
// We don't support PUT for the MR in batch mode
// It's OK to PUT the MLE alone inside a batch mode though
if (entityDescriptor.SaveStream != null)
{
throw Error.NotSupported(Strings.Context_BatchNotSupportedForMediaLink);
}
}
}
else if (descriptor.DescriptorKind == DescriptorKind.NamedStream)
{
// Similar to MR, we do not support adding named streams in batch mode.
throw Error.NotSupported(Strings.Context_BatchNotSupportedForNamedStreams);
}
ODataRequestMessageWrapper operationRequestMessage;
if (descriptor.DescriptorKind == DescriptorKind.Entity)
{
operationRequestMessage = this.CreateRequest(entityDescriptor);
}
else
{
operationRequestMessage = this.CreateRequest((LinkDescriptor)descriptor);
}
// we need to fire request after the headers have been written, but before we write the payload
operationRequestMessage.FireSendingRequest2(descriptor);
this.CreateChangeData(i, operationRequestMessage);
if (Util.IsBatchWithIndependentOperations(this.Options))
{
this.batchWriter.WriteEndChangeset();
}
}
if (Util.IsBatchWithSingleChangeset(this.Options))
{
this.batchWriter.WriteEndChangeset();
}
}
this.batchWriter.WriteEndBatch();
this.batchWriter.Flush();
}
Debug.Assert(this.ChangedEntries.All(o => o.ContentGeneratedForSave), "didn't generated content for all entities/links");
return(batchRequestMessage);
}
/// <summary>
/// Writes the body operation parameters associated with a ServiceAction. For each BodyOperationParameter:
/// 1. calls ODataPropertyConverter to convert CLR object into ODataValue/primitive values.
/// 2. then calls ODataParameterWriter to write the ODataValue/primitive values.
/// </summary>
/// <param name="operationParameters">The list of operation parameters to write.</param>
/// <param name="requestMessage">The OData request message used to write the operation parameters.</param>
internal void WriteBodyOperationParameters(List <BodyOperationParameter> operationParameters, ODataRequestMessageWrapper requestMessage)
{
Debug.Assert(requestMessage != null, "requestMessage != null");
Debug.Assert(operationParameters != null, "operationParameters != null");
Debug.Assert(operationParameters.Any(), "operationParameters.Any()");
using (ODataMessageWriter messageWriter = Serializer.CreateMessageWriter(requestMessage, this.requestInfo, true /*isParameterPayload*/))
{
ODataParameterWriter parameterWriter = messageWriter.CreateODataParameterWriter(null);
parameterWriter.WriteStart();
foreach (BodyOperationParameter operationParameter in operationParameters)
{
if (operationParameter.Value == null)
{
parameterWriter.WriteValue(operationParameter.Name, operationParameter.Value);
}
else
{
ClientEdmModel model = this.requestInfo.Model;
IEdmType edmType = model.GetOrCreateEdmType(operationParameter.Value.GetType());
Debug.Assert(edmType != null, "edmType != null");
switch (edmType.TypeKind)
{
case EdmTypeKind.Collection:
{
this.WriteCollectionValueInBodyOperationParameter(parameterWriter, operationParameter, (IEdmCollectionType)edmType);
break;
}
case EdmTypeKind.Complex:
case EdmTypeKind.Entity:
{
Debug.Assert(model.GetClientTypeAnnotation(edmType).ElementType != null, "model.GetClientTypeAnnotation(edmType).ElementType != null");
ODataResourceWrapper entry = this.CreateODataResourceFromEntityOperationParameter(model.GetClientTypeAnnotation(edmType), operationParameter.Value);
Debug.Assert(entry != null, "entry != null");
var entryWriter = parameterWriter.CreateResourceWriter(operationParameter.Name);
ODataWriterHelper.WriteResource(entryWriter, entry);
break;
}
case EdmTypeKind.Primitive:
object primitiveValue = ODataPropertyConverter.ConvertPrimitiveValueToRecognizedODataType(operationParameter.Value, operationParameter.Value.GetType());
parameterWriter.WriteValue(operationParameter.Name, primitiveValue);
break;
case EdmTypeKind.Enum:
ODataEnumValue tmp = this.propertyConverter.CreateODataEnumValue(
model.GetClientTypeAnnotation(edmType).ElementType,
operationParameter.Value,
false);
parameterWriter.WriteValue(operationParameter.Name, tmp);
break;
default:
// EdmTypeKind.Row
// EdmTypeKind.EntityReference
throw new NotSupportedException(Strings.Serializer_InvalidParameterType(operationParameter.Name, edmType.TypeKind));
}
} // else
} // foreach
parameterWriter.WriteEnd();
parameterWriter.Flush();
}
}
/// <summary>
/// Writes the body operation parameters associated with a ServiceAction. For each BodyOperationParameter:
/// 1. calls ODataPropertyConverter to convert CLR object into ODataValue/primitive values.
/// 2. then calls ODataParameterWriter to write the ODataValue/primitive values.
/// </summary>
/// <param name="operationParameters">The list of operation parameters to write.</param>
/// <param name="requestMessage">The OData request message used to write the operation parameters.</param>
internal void WriteBodyOperationParameters(List <BodyOperationParameter> operationParameters, ODataRequestMessageWrapper requestMessage)
{
Debug.Assert(requestMessage != null, "requestMessage != null");
Debug.Assert(operationParameters != null, "operationParameters != null");
Debug.Assert(operationParameters.Any(), "operationParameters.Any()");
using (ODataMessageWriter messageWriter = Serializer.CreateMessageWriter(requestMessage, this.requestInfo, true /*isParameterPayload*/))
{
ODataParameterWriter parameterWriter = messageWriter.CreateODataParameterWriter((IEdmOperation)null);
parameterWriter.WriteStart();
foreach (OperationParameter operationParameter in operationParameters)
{
if (operationParameter.Value == null)
{
parameterWriter.WriteValue(operationParameter.Name, operationParameter.Value);
}
else
{
ClientEdmModel model = this.requestInfo.Model;
IEdmType edmType = model.GetOrCreateEdmType(operationParameter.Value.GetType());
Debug.Assert(edmType != null, "edmType != null");
switch (edmType.TypeKind)
{
case EdmTypeKind.Collection:
{
// TODO: just call ODataPropertyConverter.CreateODataCollection()
IEnumerator enumerator = ((ICollection)operationParameter.Value).GetEnumerator();
ODataCollectionWriter collectionWriter = parameterWriter.CreateCollectionWriter(operationParameter.Name);
ODataCollectionStart odataCollectionStart = new ODataCollectionStart();
collectionWriter.WriteStart(odataCollectionStart);
while (enumerator.MoveNext())
{
Object collectionItem = enumerator.Current;
if (collectionItem == null)
{
throw new NotSupportedException(Strings.Serializer_NullCollectionParamterItemValue(operationParameter.Name));
}
IEdmType edmItemType = model.GetOrCreateEdmType(collectionItem.GetType());
Debug.Assert(edmItemType != null, "edmItemType != null");
switch (edmItemType.TypeKind)
{
case EdmTypeKind.Complex:
{
Debug.Assert(model.GetClientTypeAnnotation(edmItemType).ElementType != null, "edmItemType.GetClientTypeAnnotation().ElementType != null");
ODataComplexValue complexValue = this.propertyConverter.CreateODataComplexValue(
model.GetClientTypeAnnotation(edmItemType).ElementType,
collectionItem,
null /*propertyName*/,
false /*isCollectionItem*/,
null /*visitedComplexTypeObjects*/);
Debug.Assert(complexValue != null, "complexValue != null");
collectionWriter.WriteItem(complexValue);
break;
}
case EdmTypeKind.Primitive:
{
object primitiveItemValue = ODataPropertyConverter.ConvertPrimitiveValueToRecognizedODataType(collectionItem, collectionItem.GetType());
collectionWriter.WriteItem(primitiveItemValue);
break;
}
case EdmTypeKind.Enum:
{
ODataEnumValue enumTmp = this.propertyConverter.CreateODataEnumValue(
model.GetClientTypeAnnotation(edmItemType).ElementType,
collectionItem,
false);
collectionWriter.WriteItem(enumTmp);
break;
}
default:
// EdmTypeKind.Entity
// EdmTypeKind.Row
// EdmTypeKind.EntityReference
throw new NotSupportedException(Strings.Serializer_InvalidCollectionParamterItemType(operationParameter.Name, edmItemType.TypeKind));
}
}
collectionWriter.WriteEnd();
collectionWriter.Flush();
break;
}
case EdmTypeKind.Complex:
{
Debug.Assert(model.GetClientTypeAnnotation(edmType).ElementType != null, "model.GetClientTypeAnnotation(edmType).ElementType != null");
ODataComplexValue complexValue = this.propertyConverter.CreateODataComplexValue(
model.GetClientTypeAnnotation(edmType).ElementType,
operationParameter.Value,
null /*propertyName*/,
false /*isCollectionItemType*/,
null /*visitedComplexTypeObjects*/);
Debug.Assert(complexValue != null, "complexValue != null");
parameterWriter.WriteValue(operationParameter.Name, complexValue);
break;
}
case EdmTypeKind.Primitive:
object primitiveValue = ODataPropertyConverter.ConvertPrimitiveValueToRecognizedODataType(operationParameter.Value, operationParameter.Value.GetType());
parameterWriter.WriteValue(operationParameter.Name, primitiveValue);
break;
case EdmTypeKind.Enum:
ODataEnumValue tmp = this.propertyConverter.CreateODataEnumValue(
model.GetClientTypeAnnotation(edmType).ElementType,
operationParameter.Value,
false);
parameterWriter.WriteValue(operationParameter.Name, tmp);
break;
default:
// EdmTypeKind.Entity
// EdmTypeKind.Row
// EdmTypeKind.EntityReference
throw new NotSupportedException(Strings.Serializer_InvalidParameterType(operationParameter.Name, edmType.TypeKind));
}
} // else
} // foreach
parameterWriter.WriteEnd();
parameterWriter.Flush();
}
}
