/// <summary>
/// Computes all projected or missing stream properties.
/// </summary>
/// <param name="nonComputedProperties">Non-computed properties from the entity.</param>
/// <returns>The the computed stream properties for the entry.</returns>
private IEnumerable <ODataProperty> GetComputedStreamProperties(IEnumerable <ODataProperty> nonComputedProperties)
{
if (this.computedStreamProperties == null)
{
// Remove all the projected properties that were already read from the payload
IDictionary <string, IEdmStructuralProperty> projectedStreamProperties = this.entryMetadataContext.SelectedStreamProperties;
if (nonComputedProperties != null)
{
foreach (ODataProperty payloadProperty in nonComputedProperties)
{
projectedStreamProperties.Remove(payloadProperty.Name);
}
}
this.computedStreamProperties = new List <ODataProperty>();
if (projectedStreamProperties.Count > 0)
{
// Create all the missing stream properties and set the metadata builder
foreach (string missingStreamPropertyName in projectedStreamProperties.Keys)
{
ODataStreamReferenceValue streamPropertyValue = new ODataStreamReferenceValue();
streamPropertyValue.SetMetadataBuilder(this, missingStreamPropertyName);
this.computedStreamProperties.Add(new ODataProperty {
Name = missingStreamPropertyName, Value = streamPropertyValue
});
}
}
}
return(this.computedStreamProperties);
}
internal override ODataProperty GetNextUnprocessedStreamProperty()
{
if (this.unprocessedStreamProperties == null)
{
Debug.Assert(this.ResourceMetadataContext != null, "this.resourceMetadataContext != null");
this.unprocessedStreamProperties = this.ResourceMetadataContext.SelectedStreamProperties
.Where(p => !this.ProcessedStreamProperties.Contains(p.Key))
.Select(p => p.Key)
.GetEnumerator();
}
if (this.unprocessedStreamProperties.MoveNext())
{
string propertyName = unprocessedStreamProperties.Current;
ODataStreamReferenceValue streamPropertyValue = new ODataStreamReferenceValue();
streamPropertyValue.SetMetadataBuilder(this, propertyName);
// by default, let's retrieve the content type from vocabulary annotation
var edmProperty = this.ResourceMetadataContext.SelectedStreamProperties[propertyName];
var mediaTypes = this.MetadataContext.Model.GetVocabularyStringCollection(edmProperty, CoreVocabularyModel.AcceptableMediaTypesTerm);
if (mediaTypes.Count() == 1)
{
// Be noted: AcceptableMediaTypes might have more than one media type,
// Convention (default) behavior only works if AcceptableMediaTypes is a collection of one.
streamPropertyValue.ContentType = mediaTypes.ElementAt(0);
}
return(new ODataProperty {
Name = propertyName, Value = streamPropertyValue
});
}
return(null);
}
/// <summary>
/// Computes all projected or missing stream properties.
/// </summary>
/// <param name="nonComputedProperties">Non-computed properties from the entity.</param>
/// <returns>The the computed stream properties for the resource.</returns>
private IEnumerable <ODataProperty> GetComputedStreamProperties(IEnumerable <ODataProperty> nonComputedProperties)
{
if (this.computedStreamProperties == null)
{
// Remove all the projected properties that were already read from the payload
IDictionary <string, IEdmStructuralProperty> projectedStreamProperties = this.ResourceMetadataContext.SelectedStreamProperties;
if (nonComputedProperties != null)
{
foreach (ODataProperty payloadProperty in nonComputedProperties)
{
projectedStreamProperties.Remove(payloadProperty.Name);
}
}
this.computedStreamProperties = new List <ODataProperty>();
if (projectedStreamProperties.Count > 0)
{
// Create all the missing stream properties and set the metadata builder
foreach (string missingStreamPropertyName in projectedStreamProperties.Keys)
{
ODataStreamReferenceValue streamPropertyValue = new ODataStreamReferenceValue();
streamPropertyValue.SetMetadataBuilder(this, missingStreamPropertyName);
// by default, let's retrieve the content type from vocabulary annotation
var edmProperty = projectedStreamProperties[missingStreamPropertyName];
var mediaTypes = this.MetadataContext.Model.GetVocabularyStringCollection(edmProperty, CoreVocabularyModel.AcceptableMediaTypesTerm);
if (mediaTypes.Count() == 1)
{
// Be noted: AcceptableMediaTypes might have more than one media type,
// Convention (default) behavior only works if AcceptableMediaTypes is a collection of one.
streamPropertyValue.ContentType = mediaTypes.ElementAt(0);
}
this.computedStreamProperties.Add(new ODataProperty {
Name = missingStreamPropertyName, Value = streamPropertyValue
});
}
}
}
return(this.computedStreamProperties);
}
internal override ODataProperty GetNextUnprocessedStreamProperty()
{
if (this.unprocessedStreamProperties == null)
{
Debug.Assert(this.ResourceMetadataContext != null, "this.resourceMetadataContext != null");
this.unprocessedStreamProperties = this.ResourceMetadataContext.SelectedStreamProperties
.Where(p => !this.ProcessedStreamProperties.Contains(p.Key))
.Select(p => p.Key)
.GetEnumerator();
}
if (this.unprocessedStreamProperties.MoveNext())
{
string propertyName = unprocessedStreamProperties.Current;
ODataStreamReferenceValue streamPropertyValue = new ODataStreamReferenceValue();
streamPropertyValue.SetMetadataBuilder(this, propertyName);
return(new ODataProperty {
Name = propertyName, Value = streamPropertyValue
});
}
return(null);
}
/// <summary>
/// Reads a stream property value from the property annotations.
/// </summary>
/// <param name="entryState">The state of the reader for entry to read.</param>
/// <param name="streamPropertyName">The name of the stream property to read the value for.</param>
/// <returns>The newly created stream reference value.</returns>
private ODataStreamReferenceValue ReadStreamPropertyValue(IODataJsonLightReaderEntryState entryState, string streamPropertyName)
{
Debug.Assert(entryState != null, "entryState != null");
Debug.Assert(!string.IsNullOrEmpty(streamPropertyName), "!string.IsNullOrEmpty(streamPropertyName)");
// Fail on stream properties in requests as they cannot appear there.
if (!this.ReadingResponse)
{
throw new ODataException(ODataErrorStrings.ODataJsonLightEntryAndFeedDeserializer_StreamPropertyInRequest);
}
ODataStreamReferenceValue streamReferenceValue = new ODataStreamReferenceValue();
Dictionary<string, object> propertyAnnotations = entryState.DuplicatePropertyNamesChecker.GetODataPropertyAnnotations(streamPropertyName);
if (propertyAnnotations != null)
{
foreach (KeyValuePair<string, object> propertyAnnotation in propertyAnnotations)
{
switch (propertyAnnotation.Key)
{
case ODataAnnotationNames.ODataMediaEditLink:
Debug.Assert(propertyAnnotation.Value is Uri && propertyAnnotation.Value != null, "The odata.mediaEditLink annotation should have been parsed as a non-null Uri.");
streamReferenceValue.EditLink = (Uri)propertyAnnotation.Value;
break;
case ODataAnnotationNames.ODataMediaReadLink:
Debug.Assert(propertyAnnotation.Value is Uri && propertyAnnotation.Value != null, "The odata.mediaReadLink annotation should have been parsed as a non-null Uri.");
streamReferenceValue.ReadLink = (Uri)propertyAnnotation.Value;
break;
case ODataAnnotationNames.ODataMediaETag:
Debug.Assert(propertyAnnotation.Value is string && propertyAnnotation.Value != null, "The odata.mediaEtag annotation should have been parsed as a non-null string.");
streamReferenceValue.ETag = (string)propertyAnnotation.Value;
break;
case ODataAnnotationNames.ODataMediaContentType:
Debug.Assert(propertyAnnotation.Value is string && propertyAnnotation.Value != null, "The odata.mediaContentType annotation should have been parsed as a non-null string.");
streamReferenceValue.ContentType = (string)propertyAnnotation.Value;
break;
default:
throw new ODataException(ODataErrorStrings.ODataJsonLightEntryAndFeedDeserializer_UnexpectedStreamPropertyAnnotation(streamPropertyName, propertyAnnotation.Key));
}
}
}
ODataEntityMetadataBuilder builder = this.MetadataContext.GetEntityMetadataBuilderForReader(entryState, this.JsonLightInputContext.MessageReaderSettings.UseKeyAsSegment);
// Note that we set the metadata builder even when streamProperty is null, which is the case when the stream property is undeclared.
// For undeclared stream properties, we will apply conventional metadata evaluation just as declared stream properties.
streamReferenceValue.SetMetadataBuilder(builder, streamPropertyName);
return streamReferenceValue;
}
/// <summary>
/// Sets specified media resource on an entry and hooks up metadata builder.
/// </summary>
/// <param name="entryState">The entry state to use.</param>
/// <param name="mediaResource">The media resource to set.</param>
private void SetEntryMediaResource(IODataJsonLightReaderEntryState entryState, ODataStreamReferenceValue mediaResource)
{
Debug.Assert(entryState != null, "entryState != null");
Debug.Assert(mediaResource != null, "mediaResource != null");
ODataEntry entry = entryState.Entry;
Debug.Assert(entry != null, "entry != null");
ODataEntityMetadataBuilder builder = this.MetadataContext.GetEntityMetadataBuilderForReader(entryState, this.JsonLightInputContext.MessageReaderSettings.UseKeyAsSegment);
mediaResource.SetMetadataBuilder(builder, /*propertyName*/ null);
entry.MediaResource = mediaResource;
}
/// <summary>
/// Computes all projected or missing stream properties.
/// </summary>
/// <param name="nonComputedProperties">Non-computed properties from the entity.</param>
/// <returns>The the computed stream properties for the entry.</returns>
private IEnumerable<ODataProperty> GetComputedStreamProperties(IEnumerable<ODataProperty> nonComputedProperties)
{
if (this.computedStreamProperties == null)
{
// Remove all the projected properties that were already read from the payload
IDictionary<string, IEdmStructuralProperty> projectedStreamProperties = this.entryMetadataContext.SelectedStreamProperties;
if (nonComputedProperties != null)
{
foreach (ODataProperty payloadProperty in nonComputedProperties)
{
projectedStreamProperties.Remove(payloadProperty.Name);
}
}
this.computedStreamProperties = new List<ODataProperty>();
if (projectedStreamProperties.Count > 0)
{
// Create all the missing stream properties and set the metadata builder
foreach (string missingStreamPropertyName in projectedStreamProperties.Keys)
{
ODataStreamReferenceValue streamPropertyValue = new ODataStreamReferenceValue();
streamPropertyValue.SetMetadataBuilder(this, missingStreamPropertyName);
this.computedStreamProperties.Add(new ODataProperty { Name = missingStreamPropertyName, Value = streamPropertyValue });
}
}
}
return this.computedStreamProperties;
}
