/// <summary>Materializes the specified <paramref name="entry"/> as dynamic property.</summary>
/// <param name="entry">Entry with object to materialize.</param>
/// <param name="link">Nested resource link as parsed.</param>
private void MaterializeDynamicProperty(MaterializerEntry entry, ODataNestedResourceInfo link)
{
Debug.Assert(entry != null, "entry != null");
Debug.Assert(entry.ResolvedObject != null, "entry.ResolvedObject != null -- otherwise not resolved/created!");
Debug.Assert(link != null, "link != null");
ClientEdmModel model = this.MaterializerContext.Model;
IDictionary <string, object> containerProperty;
// Stop if owning type is not an open type
// Or container property is not found
// Or key with matching name already exists in the dictionary
if (!ClientTypeUtil.IsInstanceOfOpenType(entry.ResolvedObject, model) ||
!ClientTypeUtil.TryGetContainerProperty(entry.ResolvedObject, out containerProperty) ||
containerProperty.ContainsKey(link.Name))
{
return;
}
MaterializerNavigationLink linkState = MaterializerNavigationLink.GetLink(link);
if (linkState == null || (linkState.Entry == null && linkState.Feed == null))
{
return;
}
// NOTE: ODL (and OData WebApi) support navigational property on complex types
// That support has not yet been implemented in OData client
// An entity or entity collection as a dynamic property currently doesn't work as expected
// due to the absence of a navigational property definition in the metadata
// to express the relationship between that entity and the parent entity - unless they're the same type!
// Only materialize a nested resource if its a complex or complex collection
if (linkState.Feed != null)
{
string collectionTypeName = linkState.Feed.TypeName; // TypeName represents a collection e.g. Collection(NS.Type)
string collectionItemTypeName = CommonUtil.GetCollectionItemTypeName(collectionTypeName, false);
// Highly unlikely, but the method return null if the typeName argument does not meet certain expectations
if (collectionItemTypeName == null)
{
return;
}
Type collectionItemType = ResolveClientTypeForDynamicProperty(collectionItemTypeName, entry.ResolvedObject);
if (collectionItemType != null && ClientTypeUtil.TypeIsComplex(collectionItemType, model))
{
Type collectionType = typeof(System.Collections.ObjectModel.Collection <>).MakeGenericType(new Type[] { collectionItemType });
IList collection = (IList)Util.ActivatorCreateInstance(collectionType);
IEnumerable <ODataResource> feedEntries = MaterializerFeed.GetFeed(linkState.Feed).Entries;
foreach (ODataResource feedEntry in feedEntries)
{
MaterializerEntry linkEntry = MaterializerEntry.GetEntry(feedEntry);
this.Materialize(linkEntry, collectionItemType, false /*includeLinks*/);
collection.Add(linkEntry.ResolvedObject);
}
containerProperty.Add(link.Name, collection);
}
}
else
{
MaterializerEntry linkEntry = linkState.Entry;
Type itemType = ResolveClientTypeForDynamicProperty(linkEntry.Entry.TypeName, entry.ResolvedObject);
if (itemType != null && ClientTypeUtil.TypeIsComplex(itemType, model))
{
this.Materialize(linkEntry, itemType, false /*includeLinks*/);
containerProperty.Add(link.Name, linkEntry.ResolvedObject);
}
}
}
/// <summary>Provides support for getting payload entries during projections.</summary>
/// <param name="entry">Entry to get sub-entry from.</param>
/// <param name="name">Name of sub-entry.</param>
/// <returns>The sub-entry (never null).</returns>
internal static object ProjectionGetEntry(object entry, string name)
{
Debug.Assert(entry.GetType() == typeof(ODataEntry), "entry.GetType() == typeof(ODataEntry)");
return(ODataEntityMaterializer.ProjectionGetEntry(MaterializerEntry.GetEntry((ODataEntry)entry), name));
}
/// <summary>Materializes an entry without including in-lined expanded links.</summary>
/// <param name="materializer">Materializer under which materialization should take place.</param>
/// <param name="entry">Entry with object to materialize.</param>
/// <param name="expectedEntryType">Expected type for the entry.</param>
/// <returns>The materialized instance.</returns>
internal static object ShallowMaterializePlan(object materializer, object entry, Type expectedEntryType)
{
Debug.Assert(typeof(ODataEntityMaterializer).IsAssignableFrom(materializer.GetType()), "typeof(ODataEntityMaterializer).IsAssignableFrom(materializer.GetType())");
Debug.Assert(entry.GetType() == typeof(ODataEntry), "entry.GetType() == typeof(ODataEntry)");
return(ODataEntityMaterializer.ShallowMaterializePlan((ODataEntityMaterializer)materializer, MaterializerEntry.GetEntry((ODataEntry)entry), expectedEntryType));
}
/// <summary>Provides support for Select invocations for projections.</summary>
/// <param name="materializer">Materializer under which projection is taking place.</param>
/// <param name="entry">Root entry for paths.</param>
/// <param name="expectedType">Expected type for <paramref name="entry"/>.</param>
/// <param name="resultType">Expected result type.</param>
/// <param name="path">Path to traverse.</param>
/// <param name="selector">Selector callback.</param>
/// <returns>An enumerable with the select results.</returns>
internal static IEnumerable ProjectionSelect(
object materializer,
object entry,
Type expectedType,
Type resultType,
object path,
Func <object, object, Type, object> selector)
{
Debug.Assert(typeof(ODataEntityMaterializer).IsAssignableFrom(materializer.GetType()), "typeof(ODataEntityMaterializer).IsAssignableFrom(materializer.GetType())");
Debug.Assert(entry.GetType() == typeof(ODataEntry), "entry.GetType() == typeof(ODataEntry)");
Debug.Assert(path.GetType() == typeof(ProjectionPath), "path.GetType() == typeof(ProjectionPath)");
return(ODataEntityMaterializer.ProjectionSelect((ODataEntityMaterializer)materializer, MaterializerEntry.GetEntry((ODataEntry)entry), expectedType, resultType, (ProjectionPath)path, selector));
}
/// <summary>Initializes a projection-driven entry (with a specific type and specific properties).</summary>
/// <param name="materializer">Materializer under which projection is taking place.</param>
/// <param name="entry">Root entry for paths.</param>
/// <param name="expectedType">Expected type for <paramref name="entry"/>.</param>
/// <param name="resultType">Expected result type.</param>
/// <param name="properties">Properties to materialize.</param>
/// <param name="propertyValues">Functions to get values for functions.</param>
/// <returns>The initialized entry.</returns>
internal static object ProjectionInitializeEntity(
object materializer,
object entry,
Type expectedType,
Type resultType,
string[] properties,
Func <object, object, Type, object>[] propertyValues)
{
Debug.Assert(typeof(ODataEntityMaterializer).IsAssignableFrom(materializer.GetType()), "typeof(ODataEntityMaterializer).IsAssignableFrom(materializer.GetType())");
Debug.Assert(entry.GetType() == typeof(ODataEntry), "entry.GetType() == typeof(ODataEntry)");
return(ODataEntityMaterializer.ProjectionInitializeEntity((ODataEntityMaterializer)materializer, MaterializerEntry.GetEntry((ODataEntry)entry), expectedType, resultType, properties, propertyValues));
}