internal EpmCustomContentWriterNodeData(EpmCustomContentWriterNodeData parentData, EpmTargetPathSegment segment, object element, EpmContentSerializer.EpmNullValuedPropertyTree nullValuedProperties, DataServiceProviderWrapper provider)
#endif
{
this.XmlContentStream = parentData.XmlContentStream;
this.XmlContentWriter = parentData.XmlContentWriter;
#if ASTORIA_CLIENT
this.PopulateData(segment, element);
#else
this.PopulateData(segment, element, nullValuedProperties, provider);
#endif
}
internal EpmCustomContentWriterNodeData(EpmTargetPathSegment segment, object element, EpmContentSerializer.EpmNullValuedPropertyTree nullValuedProperties, DataServiceProviderWrapper provider)
#endif
{
this.XmlContentStream = new MemoryStream();
XmlWriterSettings customContentWriterSettings = new XmlWriterSettings();
customContentWriterSettings.OmitXmlDeclaration = true;
customContentWriterSettings.ConformanceLevel = ConformanceLevel.Fragment;
this.XmlContentWriter = XmlWriter.Create(this.XmlContentStream, customContentWriterSettings);
#if ASTORIA_CLIENT
this.PopulateData(segment, element);
#else
this.PopulateData(segment, element, nullValuedProperties, provider);
#endif
}
/// <summary>
/// Constructor initializes the base class be identifying itself as a custom content serializer
/// </summary>
/// <param name="targetTree">Target tree containing mapping information</param>
/// <param name="element">Object to be serialized</param>
/// <param name="target">SyndicationItem to which content will be added</param>
/// <param name="nullValuedProperties">Null valued properties found during serialization</param>
/// <param name="provider">Data Service provider used for rights verification.</param>
internal EpmCustomContentSerializer(EpmTargetTree targetTree, object element, SyndicationItem target, EpmContentSerializer.EpmNullValuedPropertyTree nullValuedProperties, DataServiceProviderWrapper provider)
: base(targetTree, false, element, target)
{
this.InitializeVisitorContent(nullValuedProperties, provider);
}
/// <summary>Initialize the visitor content for all of root's grandchildren and beyond</summary>
/// <param name="subSegment">One of root's children</param>
/// <param name="nullValuedProperties">Null valued properties found during serialization</param>
/// <param name="provider">Data Service provider used for rights verification.</param>
private void InitializeSubSegmentVisitorContent(EpmTargetPathSegment subSegment, EpmContentSerializer.EpmNullValuedPropertyTree nullValuedProperties, DataServiceProviderWrapper provider)
{
foreach (EpmTargetPathSegment segment in subSegment.SubSegments)
{
this.visitorContent.Add(segment, new EpmCustomContentWriterNodeData(this.visitorContent[subSegment], segment, this.Element, nullValuedProperties, provider));
this.InitializeSubSegmentVisitorContent(segment, nullValuedProperties, provider);
}
}
/// <summary>Initializes content for the serializer visitor</summary>
/// <param name="nullValuedProperties">Null valued properties found during serialization</param>
/// <param name="provider">Data Service provider used for rights verification.</param>
private void InitializeVisitorContent(EpmContentSerializer.EpmNullValuedPropertyTree nullValuedProperties, DataServiceProviderWrapper provider)
{
this.visitorContent = new Dictionary<EpmTargetPathSegment, EpmCustomContentWriterNodeData>(ReferenceEqualityComparer<EpmTargetPathSegment>.Instance);
// Initialize all the root's children's xml writers
foreach (EpmTargetPathSegment subSegmentOfRoot in this.Root.SubSegments)
{
this.visitorContent.Add(subSegmentOfRoot, new EpmCustomContentWriterNodeData(subSegmentOfRoot, this.Element, nullValuedProperties, provider));
this.InitializeSubSegmentVisitorContent(subSegmentOfRoot, nullValuedProperties, provider);
}
}
/// <summary>
/// Constructor initializes the base class be identifying itself as a syndication serializer
/// </summary>
/// <param name="tree">Target tree containing mapping information</param>
/// <param name="element">Object to be serialized</param>
/// <param name="target">SyndicationItem to which content will be added</param>
/// <param name="nullValuedProperties">Null valued properties found during serialization</param>
internal EpmSyndicationContentSerializer(EpmTargetTree tree, object element, SyndicationItem target, EpmContentSerializer.EpmNullValuedPropertyTree nullValuedProperties)
: base(tree, true, element, target)
{
this.nullValuedProperties = nullValuedProperties;
}
private void PopulateData(EpmTargetPathSegment segment, object element, EpmContentSerializer.EpmNullValuedPropertyTree nullValuedProperties, DataServiceProviderWrapper provider)
#endif
{
if (segment.EpmInfo != null)
{
Object propertyValue;
try
{
#if ASTORIA_CLIENT
propertyValue = segment.EpmInfo.ReadPropertyValue(element);
#else
propertyValue = segment.EpmInfo.ReadPropertyValue(element, provider);
#endif
}
catch
#if ASTORIA_CLIENT
(System.Reflection.TargetInvocationException)
#else
(System.Reflection.TargetInvocationException e)
#endif
{
#if !ASTORIA_CLIENT
ErrorHandler.HandleTargetInvocationException(e);
#endif
throw;
}
#if ASTORIA_CLIENT
this.Data = propertyValue == null ? String.Empty : ClientConvert.ToString(propertyValue, false);
#else
if (propertyValue == null || propertyValue == DBNull.Value)
{
this.Data = String.Empty;
nullValuedProperties.Add(segment.EpmInfo);
}
else
{
this.Data = PlainXmlSerializer.PrimitiveToString(propertyValue);
}
#endif
}
}
}
/// <summary>Write the entry element.</summary>
/// <param name="expanded">Expanded result provider for the specified <paramref name="element"/>.</param>
/// <param name="element">element representing the entry element</param>
/// <param name="expectedType">expected type of the entry element</param>
/// <param name="absoluteUri">absolute uri for the entry element</param>
/// <param name="relativeUri">relative uri for the entry element</param>
/// <param name="target">Target to write to.</param>
private void WriteEntryElement(IExpandedResult expanded, object element, ResourceType expectedType, Uri absoluteUri, string relativeUri, SyndicationItem target)
{
Debug.Assert(element != null || (absoluteUri != null && !String.IsNullOrEmpty(relativeUri)), "Uri's must be specified for null values");
Debug.Assert(target != null, "target != null");
this.IncrementSegmentResultCount();
string title, fullName;
if (expectedType == null)
{
// If the request uri is targetting some open type properties, then we don't know the type of the resource
// Hence we assume it to be of object type. The reason we do this is that if the value is null, there is
// no way to know what the type of the property would be, and then we write it out as object. If the value
// is not null, then we do get the resource type from the instance and write out the actual resource type.
title = typeof(object).Name;
fullName = typeof(object).FullName;
}
else
{
title = expectedType.Name;
fullName = expectedType.FullName;
}
target.Title = new TextSyndicationContent(String.Empty);
if (element == null)
{
SetEntryTypeName(target, fullName);
target.AttributeExtensions[QualifiedNullAttribute] = XmlConstants.XmlTrueLiteral;
this.WriteOtherElements(
element,
expectedType,
title,
absoluteUri,
relativeUri,
null,
target);
// Don't know when we hit this code path, keeping existing behaviour in this case
target.Authors.Add(EmptyPerson);
}
else
{
absoluteUri = Serializer.GetUri(element, this.Provider, this.CurrentContainer, this.AbsoluteServiceUri);
Debug.Assert(absoluteUri.AbsoluteUri.StartsWith(this.AbsoluteServiceUri.AbsoluteUri, StringComparison.Ordinal), "absoluteUri.AbsoluteUri.StartsWith(this.AbsoluteServiceUri.AbsoluteUri, StringComparison.Ordinal))");
relativeUri = absoluteUri.AbsoluteUri.Substring(this.AbsoluteServiceUri.AbsoluteUri.Length);
ResourceType actualResourceType = WebUtil.GetNonPrimitiveResourceType(this.Provider, element);
string mediaETag = null;
Uri readStreamUri = null;
string mediaContentType = null;
if (actualResourceType.IsMediaLinkEntry)
{
this.Service.StreamProvider.GetStreamDescription(element, this.Service.OperationContext, relativeUri, out mediaETag, out readStreamUri, out mediaContentType);
}
SetEntryTypeName(target, actualResourceType.FullName);
this.WriteOtherElements(
element,
actualResourceType,
title,
absoluteUri,
relativeUri,
mediaETag,
target);
// Write the etag property, if the type has etag properties
string etag = this.GetETagValue(element);
if (etag != null)
{
target.AttributeExtensions[new XmlQualifiedName(XmlConstants.AtomETagAttributeName, XmlConstants.DataWebMetadataNamespace)]
= etag;
}
DictionaryContent content = new DictionaryContent(actualResourceType.Properties.Count);
using (EpmContentSerializer epmSerializer = new EpmContentSerializer(actualResourceType, element, target, this.Provider))
{
this.WriteObjectProperties(expanded, element, actualResourceType, absoluteUri, relativeUri, target, content, actualResourceType.HasEntityPropertyMappings ? actualResourceType.EpmSourceTree.Root : null);
epmSerializer.Serialize(content, this.Provider);
}
if (actualResourceType.IsMediaLinkEntry)
{
// Write <content type="..." src="..." />
Debug.Assert(readStreamUri != null, "readStreamUri != null");
Debug.Assert(!string.IsNullOrEmpty(mediaContentType), "!string.IsNullOrEmpty(mediaContentType)");
target.Content = new UrlSyndicationContent(readStreamUri, mediaContentType);
if (!content.IsEmpty)
{
// Since UrlSyndicationContent must have empty content, we write the <m:property /> node as SyndicationElementExtension.
target.ElementExtensions.Add(content.GetPropertyContentsReader());
}
}
else
{
target.Content = content;
}
}
#if ASTORIA_FF_CALLBACKS
this.Service.InternalOnWriteItem(target, element);
#endif
}
