/// <summary>
/// Read a metadata document.
/// This method reads the metadata document from the input and returns
/// an <see cref="IEdmModel"/> that represents the read metadata document.
/// </summary>
/// <param name="csdlReaderSettings">The given CSDL reader settings.</param>
/// <returns>An <see cref="IEdmModel"/> representing the read metadata document.</returns>
internal override IEdmModel ReadMetadataDocument(CsdlReaderSettingsBase csdlReaderSettings)
{
// Be noted: If the input setting is not XML CSDL setting, let's use the default setting.
CsdlReaderSettings settings = csdlReaderSettings as CsdlReaderSettings;
if (settings == null)
{
settings = new CsdlReaderSettings();
}
// Use the setting to reader XML JSON
IEdmModel model;
IEnumerable <EdmError> errors;
if (!CsdlReader.TryParse(this.xmlReader, Enumerable.Empty <IEdmModel>(), settings, out model, out errors))
{
Debug.Assert(errors != null, "errors != null");
StringBuilder builder = new StringBuilder();
foreach (EdmError error in errors)
{
builder.AppendLine(error.ToString());
}
throw new ODataException(Strings.ODataMetadataInputContext_ErrorReadingMetadata(builder.ToString()));
}
Debug.Assert(model != null, "model != null");
return(model);
}
/// <summary>
/// Read a metadata document.
/// This method reads the metadata document from the input and returns
/// an <see cref="IEdmModel"/> that represents the read metadata document.
/// </summary>
/// <param name="csdlReaderSettings">The given CSDL reader settings.</param>
/// <returns>An <see cref="IEdmModel"/> representing the read metadata document.</returns>
internal override IEdmModel ReadMetadataDocument(CsdlReaderSettingsBase csdlReaderSettings)
{
// Be noted: If the input setting is not JSON CSDL setting, let's use the default setting.
CsdlJsonReaderSettings settings = csdlReaderSettings as CsdlJsonReaderSettings;
CsdlJsonReaderSettings setting = settings ?? CsdlJsonReaderSettings.Default;
// We can't use stream.Read(Span<byte> buffer), this method is introduced since .NET Core 2.1. :(
byte[] bytes = this.messageStream.ReadAllBytes();
ReadOnlySpan <byte> jsonReadOnlySpan = new ReadOnlySpan <byte>(bytes);
Utf8JsonReader jsonReader = new Utf8JsonReader(jsonReadOnlySpan);
IEdmModel model;
IEnumerable <EdmError> errors;
if (!CsdlReader.TryParse(ref jsonReader, setting, out model, out errors))
{
Debug.Assert(errors != null, "errors != null");
StringBuilder builder = new StringBuilder();
foreach (EdmError error in errors)
{
builder.AppendLine(error.ToString());
}
throw new ODataException(Strings.ODataMetadataInputContext_ErrorReadingMetadata(builder.ToString()));
}
Debug.Assert(model != null, "model != null");
return(model);
}