/// <summary>
/// Reads the headers of a part.
/// </summary>
/// <returns>true if the start of a changeset part was detected; otherwise false.</returns>
internal bool ProcessPartHeader()
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(this.batchEncoding != null, "Batch encoding should have been established on first call to SkipToBoundary.");
bool isChangeSetPart;
ODataBatchOperationHeaders headers = this.ReadPartHeaders(out isChangeSetPart);
if (isChangeSetPart)
{
// determine the changeset boundary and the changeset encoding from the content type header
this.DetermineChangesetBoundaryAndEncoding(headers[ODataConstants.ContentTypeHeader]);
if (this.changesetEncoding == null)
{
// NOTE: No changeset encoding was specified in the changeset's content type header.
// Determine the changeset encoding from the first bytes in the changeset.
// NOTE: We do not have to skip over the potential preamble of the encoding
// because the batch reader will skip over everything (incl. the preamble)
// until it finds the first changeset (or batch) boundary
this.changesetEncoding = this.DetectEncoding();
}
// Verify that we only allow single byte encodings and UTF-8 for now.
ReaderValidationUtils.ValidateEncodingSupportedInBatch(this.changesetEncoding);
}
return(isChangeSetPart);
}
private void EnsureBatchEncoding()
{
if (this.batchEncoding == null)
{
this.batchEncoding = this.DetectEncoding();
}
ReaderValidationUtils.ValidateEncodingSupportedInBatch(this.batchEncoding);
}
/// <summary>
/// Reads the next <see cref="ODataItem"/> from the message payload.
/// </summary>
/// <returns>true if more items were read; otherwise false.</returns>
private bool ReadImplementation()
{
bool result;
switch (this.State)
{
case ODataReaderState.Start:
result = this.ReadAtStartImplementation();
break;
case ODataReaderState.FeedStart:
result = this.ReadAtFeedStartImplementation();
break;
case ODataReaderState.FeedEnd:
result = this.ReadAtFeedEndImplementation();
break;
case ODataReaderState.EntryStart:
this.IncreaseEntryDepth();
result = this.ReadAtEntryStartImplementation();
break;
case ODataReaderState.EntryEnd:
this.DecreaseEntryDepth();
result = this.ReadAtEntryEndImplementation();
break;
case ODataReaderState.NavigationLinkStart:
result = this.ReadAtNavigationLinkStartImplementation();
break;
case ODataReaderState.NavigationLinkEnd:
result = this.ReadAtNavigationLinkEndImplementation();
break;
case ODataReaderState.EntityReferenceLink:
result = this.ReadAtEntityReferenceLink();
break;
case ODataReaderState.Exception: // fall through
case ODataReaderState.Completed:
throw new ODataException(Strings.ODataReaderCore_NoReadCallsAllowed(this.State));
default:
Debug.Assert(false, "Unsupported reader state " + this.State + " detected.");
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataReaderCore_ReadImplementation));
}
if ((this.State == ODataReaderState.EntryStart || this.State == ODataReaderState.EntryEnd) && this.Item != null)
{
ReaderValidationUtils.ValidateEntry(this.CurrentEntry);
}
return(result);
}
private bool ReadImplementation()
{
bool flag;
switch (this.State)
{
case ODataReaderState.Start:
flag = this.ReadAtStartImplementation();
break;
case ODataReaderState.FeedStart:
flag = this.ReadAtFeedStartImplementation();
break;
case ODataReaderState.FeedEnd:
flag = this.ReadAtFeedEndImplementation();
break;
case ODataReaderState.EntryStart:
this.IncreaseEntryDepth();
flag = this.ReadAtEntryStartImplementation();
break;
case ODataReaderState.EntryEnd:
this.DecreaseEntryDepth();
flag = this.ReadAtEntryEndImplementation();
break;
case ODataReaderState.NavigationLinkStart:
flag = this.ReadAtNavigationLinkStartImplementation();
break;
case ODataReaderState.NavigationLinkEnd:
flag = this.ReadAtNavigationLinkEndImplementation();
break;
case ODataReaderState.EntityReferenceLink:
flag = this.ReadAtEntityReferenceLink();
break;
case ODataReaderState.Exception:
case ODataReaderState.Completed:
throw new ODataException(Microsoft.Data.OData.Strings.ODataReaderCore_NoReadCallsAllowed(this.State));
default:
throw new ODataException(Microsoft.Data.OData.Strings.General_InternalError(InternalErrorCodes.ODataReaderCore_ReadImplementation));
}
if (((this.State == ODataReaderState.EntryStart) || (this.State == ODataReaderState.EntryEnd)) && (this.Item != null))
{
ReaderValidationUtils.ValidateEntry(this.CurrentEntry);
}
return(flag);
}
/// <summary>
/// Ensure that a batch encoding exists; if not, detect it from the first couple of bytes of the stream.
/// </summary>
private void EnsureBatchEncoding()
{
// If no batch encoding is specified we detect it from the first bytes in the buffer.
if (this.batchEncoding == null)
{
// NOTE: The batch encoding will only ever be null on the first call to this method which
// happens before the batch reader skips to the first boundary.
this.batchEncoding = this.DetectEncoding();
}
// Verify that we only allow single byte encodings and UTF-8 for now.
ReaderValidationUtils.ValidateEncodingSupportedInBatch(this.batchEncoding);
}
public ODataMessageReader(IODataResponseMessage responseMessage, ODataMessageReaderSettings settings, IEdmModel model)
{
this.readerPayloadKind = ODataPayloadKind.Unsupported;
ExceptionUtils.CheckArgumentNotNull <IODataResponseMessage>(responseMessage, "responseMessage");
this.settings = (settings == null) ? new ODataMessageReaderSettings() : new ODataMessageReaderSettings(settings);
ReaderValidationUtils.ValidateMessageReaderSettings(this.settings, true);
this.readingResponse = true;
this.message = new ODataResponseMessage(responseMessage, false, this.settings.DisableMessageStreamDisposal, this.settings.MessageQuotas.MaxReceivedMessageSize);
this.urlResolver = responseMessage as IODataUrlResolver;
this.version = ODataUtilsInternal.GetDataServiceVersion(this.message, this.settings.MaxProtocolVersion);
this.model = model ?? EdmCoreModel.Instance;
ODataVersionChecker.CheckVersionSupported(this.version, this.settings);
}
internal bool ProcessPartHeader()
{
bool flag;
ODataBatchOperationHeaders headers = this.ReadPartHeaders(out flag);
if (flag)
{
this.DetermineChangesetBoundaryAndEncoding(headers["Content-Type"]);
if (this.changesetEncoding == null)
{
this.changesetEncoding = this.DetectEncoding();
}
ReaderValidationUtils.ValidateEncodingSupportedInBatch(this.changesetEncoding);
}
return(flag);
}
/// <summary>
/// If an entity type name is found in the payload this method is called to apply it to the current scope.
/// This method should be called even if the type name was not found in which case a null should be passed in.
/// The method validates that some type will be available as the current entity type after it returns (if we are parsing using metadata).
/// </summary>
/// <param name="entityTypeNameFromPayload">The entity type name found in the payload or null if no type was specified in the payload.</param>
protected void ApplyEntityTypeNameFromPayload(string entityTypeNameFromPayload)
{
Debug.Assert(
this.scopes.Count > 0 && this.scopes.Peek().Item is ODataEntry,
"Entity type can be applied only when in entry scope.");
SerializationTypeNameAnnotation serializationTypeNameAnnotation;
EdmTypeKind targetTypeKind;
IEdmEntityTypeReference targetEntityTypeReference =
(IEdmEntityTypeReference)ReaderValidationUtils.ResolvePayloadTypeNameAndComputeTargetType(
EdmTypeKind.Entity,
/*defaultPrimitivePayloadType*/ null,
this.CurrentEntityType.ToTypeReference(),
entityTypeNameFromPayload,
this.inputContext.Model,
this.inputContext.MessageReaderSettings,
this.inputContext.Version,
() => EdmTypeKind.Entity,
out targetTypeKind,
out serializationTypeNameAnnotation);
IEdmEntityType targetEntityType = null;
ODataEntry entry = this.CurrentEntry;
if (targetEntityTypeReference != null)
{
targetEntityType = targetEntityTypeReference.EntityDefinition();
entry.TypeName = targetEntityType.ODataFullName();
if (serializationTypeNameAnnotation != null)
{
entry.SetAnnotation(serializationTypeNameAnnotation);
}
}
else if (entityTypeNameFromPayload != null)
{
entry.TypeName = entityTypeNameFromPayload;
}
// Set the current entity type since the type from payload might be more derived than
// the expected one.
this.CurrentEntityType = targetEntityType;
}
protected void ApplyEntityTypeNameFromPayload(string entityTypeNameFromPayload)
{
SerializationTypeNameAnnotation annotation;
EdmTypeKind kind;
IEdmEntityTypeReference reference = (IEdmEntityTypeReference)ReaderValidationUtils.ResolvePayloadTypeNameAndComputeTargetType(EdmTypeKind.Entity, null, this.CurrentEntityType.ToTypeReference(), entityTypeNameFromPayload, this.inputContext.Model, this.inputContext.MessageReaderSettings, this.inputContext.Version, () => EdmTypeKind.Entity, out kind, out annotation);
IEdmEntityType type = null;
ODataEntry currentEntry = this.CurrentEntry;
if (reference != null)
{
type = reference.EntityDefinition();
currentEntry.TypeName = type.ODataFullName();
if (annotation != null)
{
currentEntry.SetAnnotation <SerializationTypeNameAnnotation>(annotation);
}
}
else if (entityTypeNameFromPayload != null)
{
currentEntry.TypeName = entityTypeNameFromPayload;
}
this.CurrentEntityType = type;
}
/// <summary>
/// Converts a string to a primitive value.
/// </summary>
/// <param name="text">The string text to convert.</param>
/// <param name="targetTypeReference">Type to convert the string to.</param>
/// <returns>The value converted to the target type.</returns>
/// <remarks>This method does not convert null value.</remarks>
internal static object ConvertStringToPrimitive(string text, IEdmPrimitiveTypeReference targetTypeReference)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(text != null, "text != null");
Debug.Assert(targetTypeReference != null, "targetTypeReference != null");
try
{
EdmPrimitiveTypeKind primitiveKind = targetTypeReference.PrimitiveKind();
switch (primitiveKind)
{
case EdmPrimitiveTypeKind.Binary:
return(Convert.FromBase64String(text));
case EdmPrimitiveTypeKind.Boolean:
return(ConvertXmlBooleanValue(text));
case EdmPrimitiveTypeKind.Byte:
return(XmlConvert.ToByte(text));
case EdmPrimitiveTypeKind.DateTime:
return(PlatformHelper.ConvertStringToDateTime(text));
case EdmPrimitiveTypeKind.DateTimeOffset:
return(PlatformHelper.ConvertStringToDateTimeOffset(text));
case EdmPrimitiveTypeKind.Decimal:
return(XmlConvert.ToDecimal(text));
case EdmPrimitiveTypeKind.Double:
return(XmlConvert.ToDouble(text));
case EdmPrimitiveTypeKind.Guid:
return(new Guid(text));
case EdmPrimitiveTypeKind.Int16:
return(XmlConvert.ToInt16(text));
case EdmPrimitiveTypeKind.Int32:
return(XmlConvert.ToInt32(text));
case EdmPrimitiveTypeKind.Int64:
return(XmlConvert.ToInt64(text));
case EdmPrimitiveTypeKind.SByte:
return(XmlConvert.ToSByte(text));
case EdmPrimitiveTypeKind.Single:
return(XmlConvert.ToSingle(text));
case EdmPrimitiveTypeKind.String:
return(text);
case EdmPrimitiveTypeKind.Time:
return(XmlConvert.ToTimeSpan(text));
case EdmPrimitiveTypeKind.Stream:
case EdmPrimitiveTypeKind.None:
case EdmPrimitiveTypeKind.Geography:
case EdmPrimitiveTypeKind.GeographyCollection:
case EdmPrimitiveTypeKind.GeographyPoint:
case EdmPrimitiveTypeKind.GeographyLineString:
case EdmPrimitiveTypeKind.GeographyPolygon:
case EdmPrimitiveTypeKind.GeometryCollection:
case EdmPrimitiveTypeKind.GeographyMultiPolygon:
case EdmPrimitiveTypeKind.GeographyMultiLineString:
case EdmPrimitiveTypeKind.GeographyMultiPoint:
case EdmPrimitiveTypeKind.Geometry:
case EdmPrimitiveTypeKind.GeometryPoint:
case EdmPrimitiveTypeKind.GeometryLineString:
case EdmPrimitiveTypeKind.GeometryPolygon:
case EdmPrimitiveTypeKind.GeometryMultiPolygon:
case EdmPrimitiveTypeKind.GeometryMultiLineString:
case EdmPrimitiveTypeKind.GeometryMultiPoint:
default:
// Note that Astoria supports XElement and Binary as well, but they are serialized as string or byte[]
// and the metadata will actually talk about string and byte[] as well. Astoria will perform the conversion if necessary.
throw new ODataException(Strings.General_InternalError(InternalErrorCodes.AtomValueUtils_ConvertStringToPrimitive));
}
}
catch (Exception e)
{
if (!ExceptionUtils.IsCatchableExceptionType(e))
{
throw;
}
throw ReaderValidationUtils.GetPrimitiveTypeConversionException(targetTypeReference, e);
}
}
internal static object ConvertStringToPrimitive(string text, IEdmPrimitiveTypeReference targetTypeReference)
{
object obj2;
try
{
switch (targetTypeReference.PrimitiveKind())
{
case EdmPrimitiveTypeKind.Binary:
return(Convert.FromBase64String(text));
case EdmPrimitiveTypeKind.Boolean:
return(XmlConvert.ToBoolean(text));
case EdmPrimitiveTypeKind.Byte:
return(XmlConvert.ToByte(text));
case EdmPrimitiveTypeKind.DateTime:
return(Microsoft.Data.OData.PlatformHelper.ConvertStringToDateTime(text));
case EdmPrimitiveTypeKind.DateTimeOffset:
return(XmlConvert.ToDateTimeOffset(text));
case EdmPrimitiveTypeKind.Decimal:
return(XmlConvert.ToDecimal(text));
case EdmPrimitiveTypeKind.Double:
return(XmlConvert.ToDouble(text));
case EdmPrimitiveTypeKind.Guid:
return(new Guid(text));
case EdmPrimitiveTypeKind.Int16:
return(XmlConvert.ToInt16(text));
case EdmPrimitiveTypeKind.Int32:
return(XmlConvert.ToInt32(text));
case EdmPrimitiveTypeKind.Int64:
return(XmlConvert.ToInt64(text));
case EdmPrimitiveTypeKind.SByte:
return(XmlConvert.ToSByte(text));
case EdmPrimitiveTypeKind.Single:
return(XmlConvert.ToSingle(text));
case EdmPrimitiveTypeKind.String:
return(text);
case EdmPrimitiveTypeKind.Time:
return(XmlConvert.ToTimeSpan(text));
}
throw new ODataException(Microsoft.Data.OData.Strings.General_InternalError(InternalErrorCodes.AtomValueUtils_ConvertStringToPrimitive));
}
catch (Exception exception)
{
if (!ExceptionUtils.IsCatchableExceptionType(exception))
{
throw;
}
throw ReaderValidationUtils.GetPrimitiveTypeConversionException(targetTypeReference, exception);
}
return(obj2);
}
protected override Task <bool> ReadAsynchronously()
{
Task <bool> result;
switch (this.State)
{
case ODataReaderState.Start:
result = this.ReadAtStartImplementationAsync();
break;
case ODataReaderState.FeedStart:
result = this.ReadAtFeedStartImplementationAsync();
break;
case ODataReaderState.FeedEnd:
result = this.ReadAtFeedEndImplementationAsync();
break;
case ODataReaderState.EntryStart:
result = TaskUtils.GetTaskForSynchronousOperation(() => this.IncreaseEntryDepth())
.FollowOnSuccessWithTask(t => this.ReadAtEntryStartImplementationAsync());
break;
case ODataReaderState.EntryEnd:
result = TaskUtils.GetTaskForSynchronousOperation(() => this.DecreaseEntryDepth())
.FollowOnSuccessWithTask(t => this.ReadAtEntryEndImplementationAsync());
break;
case ODataReaderState.NavigationLinkStart:
result = this.ReadAtNavigationLinkStartImplementationAsync();
break;
case ODataReaderState.NavigationLinkEnd:
result = this.ReadAtNavigationLinkEndImplementationAsync();
break;
case ODataReaderState.EntityReferenceLink:
result = this.ReadAtEntityReferenceLinkAsync();
break;
case ODataReaderState.Exception: // fall through
case ODataReaderState.Completed:
result = TaskUtils.GetFaultedTask <bool>(new ODataException(Strings.ODataReaderCore_NoReadCallsAllowed(this.State)));
break;
default:
Debug.Assert(false, "Unsupported reader state " + this.State + " detected.");
result = TaskUtils.GetFaultedTask <bool>(new ODataException(Strings.General_InternalError(InternalErrorCodes.ODataReaderCoreAsync_ReadAsynchronously)));
break;
}
return(result.FollowOnSuccessWith(t =>
{
if ((this.State == ODataReaderState.EntryStart || this.State == ODataReaderState.EntryEnd) && this.Item != null)
{
ReaderValidationUtils.ValidateEntry(this.CurrentEntry);
}
return t.Result;
}));
}
