private ResourcePropertyInfo GetResourcePropertyInfo(ResourceProperty resourceProperty)
{
ResourcePropertyInfo propertyInfoDecaredOnThisType = null;
for (ResourceType type = this; (propertyInfoDecaredOnThisType == null) && (type != null); type = type.BaseType)
{
propertyInfoDecaredOnThisType = type.GetPropertyInfoDecaredOnThisType(resourceProperty);
}
return(propertyInfoDecaredOnThisType);
}
protected ResourcePropertyInfo GetNavigationPropertyInfo(IExpandedResult expanded, object customObject, ResourceType currentResourceType, ResourceProperty property)
{
ExpandedProjectionNode node;
object obj2 = null;
bool expand = this.ShouldExpandSegment(property, currentResourceType, out node);
if (expand)
{
obj2 = this.GetExpandedProperty(expanded, customObject, property, node);
}
return(ResourcePropertyInfo.CreateResourcePropertyInfo(property, obj2, node, expand));
}
private ResourcePropertyInfo GetPropertyInfoDecaredOnThisType(ResourceProperty resourceProperty)
{
ResourcePropertyInfo info;
if (this.propertyInfosDeclaredOnThisType == null)
{
this.propertyInfosDeclaredOnThisType = new Dictionary <ResourceProperty, ResourcePropertyInfo>(ReferenceEqualityComparer <ResourceProperty> .Instance);
}
if (!this.propertyInfosDeclaredOnThisType.TryGetValue(resourceProperty, out info))
{
PropertyInfo property = this.InstanceType.GetProperty(resourceProperty.Name, BindingFlags.Public | BindingFlags.Instance);
if (property == null)
{
throw new DataServiceException(500, System.Data.Services.Strings.BadProvider_UnableToGetPropertyInfo(this.FullName, resourceProperty.Name));
}
info = new ResourcePropertyInfo(property);
this.propertyInfosDeclaredOnThisType.Add(resourceProperty, info);
}
return(info);
}
private void WriteNavigationProperties(IExpandedResult expanded, EntityToSerialize entityToSerialize, bool resourceInstanceInFeed, IEnumerable <ProjectionNode> projectionNodesForCurrentResourceType)
{
Debug.Assert(entityToSerialize != null, "entityToSerialize != null");
Debug.Assert(
projectionNodesForCurrentResourceType == null ||
projectionNodesForCurrentResourceType.All(projectionNode => projectionNode.TargetResourceType.IsAssignableFrom(entityToSerialize.ResourceType)),
"The projection nodes must be filtered to the current resource type only.");
IEnumerable <ResourceProperty> navProperties =
projectionNodesForCurrentResourceType == null
? this.Provider.GetResourceSerializableProperties(this.CurrentContainer, entityToSerialize.ResourceType).Where(p => p.TypeKind == ResourceTypeKind.EntityType)
: projectionNodesForCurrentResourceType.Where(p => p.Property != null && p.Property.TypeKind == ResourceTypeKind.EntityType).Select(p1 => p1.Property);
foreach (ResourceProperty property in navProperties)
{
ResourcePropertyInfo navProperty = this.GetNavigationPropertyInfo(expanded, entityToSerialize.Entity, entityToSerialize.ResourceType, property);
ODataNavigationLink navLink = this.GetNavigationLink(entityToSerialize, navProperty.Property);
// WCF Data Services show performance degradation with JsonLight when entities have > 25 Navgations on writing entries
// DEVNOTE: for performance reasons, if the link has no content due to the metadata level, and is not expanded
// then don't tell ODataLib about it at all.
if (navLink.Url == null && navLink.AssociationLinkUrl == null && !navProperty.Expand)
{
continue;
}
var linkArgs = new DataServiceODataWriterNavigationLinkArgs(navLink, this.Service.OperationContext);
this.dataServicesODataWriter.WriteStart(linkArgs);
if (navProperty.Expand)
{
object navPropertyValue = navProperty.Value;
IExpandedResult navPropertyExpandedResult = navPropertyValue as IExpandedResult;
object expandedPropertyValue =
navPropertyExpandedResult != null?
GetExpandedElement(navPropertyExpandedResult) :
navPropertyValue;
bool needPop = this.PushSegmentForProperty(navProperty.Property, entityToSerialize.ResourceType, navProperty.ExpandedNode);
// if this.CurrentContainer is null, the target set of the navigation property is hidden.
if (this.CurrentContainer != null)
{
if (navProperty.Property.Kind == ResourcePropertyKind.ResourceSetReference)
{
IEnumerable enumerable;
bool collection = WebUtil.IsElementIEnumerable(expandedPropertyValue, out enumerable);
Debug.Assert(collection, "metadata loading must have ensured that navigation set properties must implement IEnumerable");
QueryResultInfo queryResults = new QueryResultInfo(enumerable);
try
{
queryResults.MoveNext();
Func <Uri> getNavPropertyRelativeUri = () => RequestUriProcessor.AppendUnescapedSegment(entityToSerialize.SerializedKey.RelativeEditLink, navLink.Name);
Func <Uri> getNavPropertyAbsoluteUri = () => RequestUriProcessor.AppendUnescapedSegment(entityToSerialize.SerializedKey.AbsoluteEditLink, navLink.Name);
this.WriteFeedElements(navPropertyExpandedResult, queryResults, navProperty.Property.ResourceType, navLink.Name, getNavPropertyRelativeUri, getNavPropertyAbsoluteUri, false);
}
finally
{
// After the navigation property is completely serialized, dispose the property value.
WebUtil.Dispose(queryResults);
}
}
else if (WebUtil.IsNullValue(expandedPropertyValue))
{
// Write a null reference navigation property
var entryArgs = new DataServiceODataWriterEntryArgs(null, null, this.Service.OperationContext);
this.dataServicesODataWriter.WriteStart(entryArgs);
this.dataServicesODataWriter.WriteEnd(entryArgs);
}
else
{
this.WriteEntry(navPropertyExpandedResult, expandedPropertyValue, resourceInstanceInFeed, navProperty.Property.ResourceType);
}
}
this.PopSegmentName(needPop);
}
this.dataServicesODataWriter.WriteEnd(linkArgs); // end of navigation property
}
}
private ResourcePropertyInfo GetPropertyInfoDecaredOnThisType(ResourceProperty resourceProperty)
{
ResourcePropertyInfo info;
if (this.propertyInfosDeclaredOnThisType == null)
{
this.propertyInfosDeclaredOnThisType = new Dictionary<ResourceProperty, ResourcePropertyInfo>(ReferenceEqualityComparer<ResourceProperty>.Instance);
}
if (!this.propertyInfosDeclaredOnThisType.TryGetValue(resourceProperty, out info))
{
PropertyInfo property = this.InstanceType.GetProperty(resourceProperty.Name, BindingFlags.Public | BindingFlags.Instance);
if (property == null)
{
throw new DataServiceException(500, System.Data.Services.Strings.BadProvider_UnableToGetPropertyInfo(this.FullName, resourceProperty.Name));
}
info = new ResourcePropertyInfo(property);
this.propertyInfosDeclaredOnThisType.Add(resourceProperty, info);
}
return info;
}
/// <summary>
/// Adds A resourcepropertyInfo instance to the internal propertyInfosDeclaredOnThisType dictionary.
/// </summary>
/// <param name="resourceProperty">The resource property to add to the dictionary</param>
/// <param name="propertyInfo">The propertyInfo handle to the instance property represented by the <paramref name="resourceProperty"/> </param>
/// <returns>A resourcepropertyInfo instance that allows access to the instance property</returns>
private ResourcePropertyInfo AddPropertyToResourceTypePropertyInfoCache(ResourceProperty resourceProperty, PropertyInfo propertyInfo)
{
ResourcePropertyInfo resourcePropertyInfo = new ResourcePropertyInfo(propertyInfo);
var propertiesDictionary = new Dictionary<ResourceProperty, ResourcePropertyInfo>(this.propertyInfosDeclaredOnThisType, ReferenceEqualityComparer<ResourceProperty>.Instance);
propertiesDictionary.Add(resourceProperty, resourcePropertyInfo);
Interlocked.Exchange(ref this.propertyInfosDeclaredOnThisType, propertiesDictionary);
return resourcePropertyInfo;
}
