/// <summary>
/// Tries to get the value of a property and corresponding BindingPropertyInfo or ClientPropertyAnnotation if the property exists
/// </summary>
/// <param name="source">Source object whose property needs to be read</param>
/// <param name="sourceProperty">Name of the source object property</param>
/// <param name="model">The client model.</param>
/// <param name="bindingPropertyInfo">BindingPropertyInfo corresponding to <paramref name="sourceProperty"/></param>
/// <param name="clientProperty">Instance of ClientProperty corresponding to <paramref name="sourceProperty"/></param>
/// <param name="propertyValue">Value of the property</param>
/// <returns>true if the property exists and the value was read; otherwise false.</returns>
internal static bool TryGetPropertyValue(object source, string sourceProperty, ClientEdmModel model, out BindingPropertyInfo bindingPropertyInfo, out ClientPropertyAnnotation clientProperty, out object propertyValue)
{
Type sourceType = source.GetType();
bindingPropertyInfo = BindingEntityInfo.GetObservableProperties(sourceType, model)
.SingleOrDefault(x => x.PropertyInfo.PropertyName == sourceProperty);
bool propertyFound = bindingPropertyInfo != null;
// bindingPropertyInfo is null for primitive properties.
if (!propertyFound)
{
clientProperty = BindingEntityInfo.GetClientType(sourceType, model)
.GetProperty(sourceProperty, true);
propertyFound = clientProperty != null;
if (!propertyFound)
{
propertyValue = null;
}
else
{
propertyValue = clientProperty.GetValue(source);
}
}
else
{
clientProperty = null;
propertyValue = bindingPropertyInfo.PropertyInfo.GetValue(source);
}
return(propertyFound);
}
private object GetCollectionInstance(ClientPropertyAnnotation property, out bool instanceCreated)
{
instanceCreated = false;
object obj2 = property.GetValue(this.entity);
if (obj2 != null)
{
return(obj2);
}
instanceCreated = true;
Type propertyType = property.PropertyType;
if (BindingEntityInfo.IsDataServiceCollection(propertyType, base.RequestInfo.MaxProtocolVersion))
{
object[] args = new object[2];
args[1] = TrackingMode.None;
return(Activator.CreateInstance(WebUtil.GetDataServiceCollectionOfT(new Type[] { property.EntityCollectionItemType }), args));
}
Type c = typeof(List <>).MakeGenericType(new Type[] { property.EntityCollectionItemType });
if (!propertyType.IsAssignableFrom(c))
{
c = propertyType;
}
return(Activator.CreateInstance(c));
}
/// <summary>
/// Builds an edm property value from the given annotation.
/// </summary>
/// <param name="propertyAnnotation">The property annotation.</param>
/// <returns>The property value</returns>
private IEdmPropertyValue BuildEdmPropertyValue(ClientPropertyAnnotation propertyAnnotation)
{
var propertyValue = propertyAnnotation.GetValue(this.structuredValue);
var edmValue = this.ConvertToEdmValue(propertyValue, propertyAnnotation.EdmProperty.Type);
return(new EdmPropertyValue(propertyAnnotation.EdmProperty.Name, edmValue));
}
internal static object ProjectionInitializeEntity(ODataEntityMaterializer materializer, MaterializerEntry entry, Type expectedType, Type resultType, string[] properties, Func <object, object, Type, object>[] propertyValues)
{
if (entry.Entry == null)
{
throw new NullReferenceException(System.Data.Services.Client.Strings.AtomMaterializer_EntryToInitializeIsNull(resultType.FullName));
}
if (!entry.EntityHasBeenResolved)
{
ProjectionEnsureEntryAvailableOfType(materializer, entry, resultType);
}
else if (!resultType.IsAssignableFrom(entry.ActualType.ElementType))
{
throw new InvalidOperationException(System.Data.Services.Client.Strings.AtomMaterializer_ProjectEntityTypeMismatch(resultType.FullName, entry.ActualType.ElementType.FullName, entry.Entry.Id));
}
object resolvedObject = entry.ResolvedObject;
for (int i = 0; i < properties.Length; i++)
{
StreamDescriptor descriptor;
string propertyName = properties[i];
ClientPropertyAnnotation annotation = entry.ActualType.GetProperty(propertyName, materializer.ResponseInfo.IgnoreMissingProperties);
object target = propertyValues[i](materializer, entry.Entry, expectedType);
ODataProperty property = (from p in entry.Entry.Properties
where p.Name == propertyName
select p).FirstOrDefault <ODataProperty>();
if ((((((property == null) && (entry.NavigationLinks != null)) ? (from l in entry.NavigationLinks
where l.Name == propertyName
select l).FirstOrDefault <ODataNavigationLink>() : null) != null) || (property != null)) || entry.EntityDescriptor.TryGetNamedStreamInfo(propertyName, out descriptor))
{
if (entry.ShouldUpdateFromPayload && (annotation.EdmProperty.Type.TypeKind() == EdmTypeKind.Entity))
{
materializer.Log.SetLink(entry, annotation.PropertyName, target);
}
if (entry.ShouldUpdateFromPayload)
{
if (!annotation.IsEntityCollection)
{
if (!annotation.IsPrimitiveOrComplexCollection)
{
annotation.SetValue(resolvedObject, target, annotation.PropertyName, false);
}
}
else
{
IEnumerable list = (IEnumerable)target;
DataServiceQueryContinuation continuation = materializer.nextLinkTable[list];
Uri nextLink = (continuation == null) ? null : continuation.NextLinkUri;
ProjectionPlan plan = (continuation == null) ? null : continuation.Plan;
materializer.MergeLists(entry, annotation, list, nextLink, plan);
}
}
else if (annotation.IsEntityCollection)
{
materializer.FoundNextLinkForUnmodifiedCollection(annotation.GetValue(entry.ResolvedObject) as IEnumerable);
}
}
}
return(resolvedObject);
}
/// <summary>
/// Gets or creates a collection property on the specified <paramref name="instance"/>.
/// </summary>
/// <param name="instance">Instance on which to get/create the collection.</param>
/// <param name="property">Collection property on the <paramref name="instance"/>.</param>
/// <param name="forLoadProperty">Is this collection being created for LoadProperty scenario.</param>
/// <returns>
/// The collection corresponding to the specified <paramref name="property"/>;
/// never null.
/// </returns>
private object GetOrCreateCollectionProperty(object instance, ClientPropertyAnnotation property, bool forLoadProperty)
{
Debug.Assert(instance != null, "instance != null");
Debug.Assert(property != null, "property != null");
Debug.Assert(property.IsResourceSet, "property.IsEntityCollection has to be true - otherwise property isn't a collection");
// NOTE: in V1, we would have instantiated nested objects before setting them.
object result;
result = property.GetValue(instance);
if (result == null)
{
Type collectionType = property.PropertyType;
// For backward compatibility we need to have different strategy of collection creation b/w
// LoadProperty scenario versus regular collection creation scenario.
if (forLoadProperty)
{
if (BindingEntityInfo.IsDataServiceCollection(collectionType, this.MaterializerContext.Model))
{
Debug.Assert(WebUtil.GetDataServiceCollectionOfT(property.EntityCollectionItemType) != null, "DataServiceCollection<> must be available here.");
// new DataServiceCollection<property.EntityCollectionItemType>(null, TrackingMode.None)
result = Activator.CreateInstance(
WebUtil.GetDataServiceCollectionOfT(property.EntityCollectionItemType),
null,
TrackingMode.None);
}
else
{
// Try List<> first because that's what we did in V1/V2, but use the actual property type if it doesn't support List<>
Type listCollectionType = typeof(List <>).MakeGenericType(property.EntityCollectionItemType);
if (collectionType.IsAssignableFrom(listCollectionType))
{
collectionType = listCollectionType;
}
result = Activator.CreateInstance(collectionType);
}
}
else
{
if (DSClient.PlatformHelper.IsInterface(collectionType))
{
collectionType = typeof(System.Collections.ObjectModel.Collection <>).MakeGenericType(property.EntityCollectionItemType);
}
result = this.CreateNewInstance(property.EdmProperty.Type, collectionType);
}
// Update the property value on the instance.
property.SetValue(instance, result, property.PropertyName, false /* add */);
}
Debug.Assert(result != null, "result != null -- otherwise GetOrCreateCollectionProperty didn't fall back to creation");
return(result);
}
private void ApplyItemsToCollection(MaterializerEntry entry, ClientPropertyAnnotation property, IEnumerable items, Uri nextLink, ProjectionPlan continuationPlan)
{
Func <LinkDescriptor, bool> predicate = null;
object instance = entry.ShouldUpdateFromPayload ? GetOrCreateCollectionProperty(entry.ResolvedObject, property, null) : null;
ClientEdmModel model = ClientEdmModel.GetModel(base.ResponseInfo.MaxProtocolVersion);
ClientTypeAnnotation clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(property.EntityCollectionItemType));
foreach (object obj3 in items)
{
if (!clientTypeAnnotation.ElementType.IsAssignableFrom(obj3.GetType()))
{
throw new InvalidOperationException(System.Data.Services.Client.Strings.AtomMaterializer_EntryIntoCollectionMismatch(obj3.GetType().FullName, clientTypeAnnotation.ElementType.FullName));
}
if (entry.ShouldUpdateFromPayload)
{
property.SetValue(instance, obj3, property.PropertyName, true);
this.log.AddedLink(entry, property.PropertyName, obj3);
}
}
if (entry.ShouldUpdateFromPayload)
{
this.FoundNextLinkForCollection(instance as IEnumerable, nextLink, continuationPlan);
}
else
{
this.FoundNextLinkForUnmodifiedCollection(property.GetValue(entry.ResolvedObject) as IEnumerable);
}
if ((this.mergeOption == MergeOption.OverwriteChanges) || (this.mergeOption == MergeOption.PreserveChanges))
{
if (predicate == null)
{
predicate = delegate(LinkDescriptor x) {
if (MergeOption.OverwriteChanges != this.mergeOption)
{
return(EntityStates.Added != x.State);
}
return(true);
};
}
foreach (object obj4 in (from x in base.ResponseInfo.EntityTracker.GetLinks(entry.ResolvedObject, property.PropertyName).Where <LinkDescriptor>(predicate) select x.Target).Except <object>(EnumerateAsElementType <object>(items)))
{
if (instance != null)
{
property.RemoveValue(instance, obj4);
}
this.log.RemovedLink(entry, property.PropertyName, obj4);
}
}
}
/// <summary>
/// Populates the collection property on the entry's resolved object with the given items enumerator.
/// </summary>
/// <param name="entry">Entry with collection to be modified.</param>
/// <param name="property">Collection property on the entry.</param>
/// <param name="items">Values to apply onto the collection.</param>
/// <param name="nextLink">Next link for collection continuation.</param>
/// <param name="continuationPlan">Projection plan for collection continuation.</param>
/// <returns>Collection instance that was populated.</returns>
private object PopulateCollectionProperty(
MaterializerEntry entry,
ClientPropertyAnnotation property,
IEnumerable <object> items,
Uri nextLink,
ProjectionPlan continuationPlan)
{
Debug.Assert(entry.Entry != null || entry.ForLoadProperty, "ODataResource should be non-null except for LoadProperty");
Debug.Assert(property != null, "property != null");
Debug.Assert(items != null, "items != null");
object collection = null;
ClientEdmModel edmModel = this.MaterializerContext.Model;
ClientTypeAnnotation collectionType = edmModel.GetClientTypeAnnotation(edmModel.GetOrCreateEdmType(property.ResourceSetItemType));
if (entry.ShouldUpdateFromPayload)
{
collection = this.GetOrCreateCollectionProperty(entry.ResolvedObject, property, entry.ForLoadProperty);
foreach (object item in items)
{
// Validate that item can be inserted into collection.
ValidateCollectionElementTypeIsItemType(item.GetType(), collectionType.ElementType);
property.SetValue(collection, item, property.PropertyName, true /* allowAdd? */);
this.EntityTrackingAdapter.MaterializationLog.AddedLink(entry, property.PropertyName, item);
}
this.FoundNextLinkForCollection(collection as IEnumerable, nextLink, continuationPlan);
}
else
{
Debug.Assert(!entry.ForLoadProperty, "LoadProperty should always have ShouldUpdateForPayload set to true.");
foreach (object item in items)
{
// Validate that item can be inserted into collection.
ValidateCollectionElementTypeIsItemType(item.GetType(), collectionType.ElementType);
}
this.FoundNextLinkForUnmodifiedCollection(property.GetValue(entry.ResolvedObject) as IEnumerable);
}
return(collection);
}
private static object GetOrCreateCollectionProperty(object instance, ClientPropertyAnnotation property, Type collectionType)
{
object obj2 = property.GetValue(instance);
if (obj2 == null)
{
if (collectionType == null)
{
collectionType = property.PropertyType;
if (collectionType.IsInterfaceEx())
{
collectionType = typeof(Collection <>).MakeGenericType(new Type[] { property.EntityCollectionItemType });
}
}
obj2 = Activator.CreateInstance(collectionType);
property.SetValue(instance, obj2, property.PropertyName, false);
}
return(obj2);
}
internal static bool TryGetPropertyValue(object source, string sourceProperty, DataServiceProtocolVersion maxProtocolVersion, out BindingPropertyInfo bindingPropertyInfo, out ClientPropertyAnnotation clientProperty, out object propertyValue)
{
Type entityType = source.GetType();
bindingPropertyInfo = GetObservableProperties(entityType, maxProtocolVersion).SingleOrDefault <BindingPropertyInfo>(x => x.PropertyInfo.PropertyName == sourceProperty);
bool flag = bindingPropertyInfo != null;
if (!flag)
{
clientProperty = GetClientType(entityType, maxProtocolVersion).GetProperty(sourceProperty, true);
flag = clientProperty != null;
if (!flag)
{
propertyValue = null;
return(flag);
}
propertyValue = clientProperty.GetValue(source);
return(flag);
}
clientProperty = null;
propertyValue = bindingPropertyInfo.PropertyInfo.GetValue(source);
return(flag);
}
private MaterializeAtom ReadPropertyFromAtom(ClientPropertyAnnotation property)
{
DataServiceContext context = (DataServiceContext)this.Source;
bool merging = context.ApplyingChanges;
try
{
context.ApplyingChanges = true;
// store the results so that they can be there in the response body.
Type elementType = property.IsEntityCollection ? property.EntityCollectionItemType : property.NullablePropertyType;
IList results = (IList)Activator.CreateInstance(typeof(List <>).MakeGenericType(elementType));
DataServiceQueryContinuation continuation = null;
// elementType.ElementType has Nullable stripped away, use nestedType for materializer
using (MaterializeAtom materializer = this.GetMaterializer(this.plan))
{
Debug.Assert(materializer != null, "materializer != null -- otherwise GetMaterializer() returned null rather than empty");
#if ASTORIA_OPEN_OBJECT
object openProperties = null;
#endif
// when SetLink to null, we cannot get materializer because have no-content response.
if (materializer.IsNoContentResponse() &&
property.GetValue(entity) != null &&
context.MergeOption != MergeOption.AppendOnly &&
context.MergeOption != MergeOption.NoTracking)
{
property.SetValue(this.entity, null, propertyName, false);
}
else
{
foreach (object child in materializer)
{
if (property.IsEntityCollection)
{
results.Add(child);
}
else if (property.IsPrimitiveOrEnumOrComplexCollection)
{
Debug.Assert(property.PropertyType.IsAssignableFrom(child.GetType()), "Created instance for storing collection items has to be compatible with the actual one.");
// Collection materialization rules requires to clear the collection if not null or set the property first and then add the collection items
object collectionInstance = property.GetValue(this.entity);
if (collectionInstance == null)
{
// type of child has been resolved as per rules for collections so it is the correct type to instantiate
collectionInstance = Activator.CreateInstance(child.GetType());
// allowAdd is false - we need to assign instance as the new property value
property.SetValue(this.entity, collectionInstance, this.propertyName, false /* allowAdd? */);
}
else
{
// Clear existing collection
property.ClearBackingICollectionInstance(collectionInstance);
}
foreach (var collectionItem in (IEnumerable)child)
{
Debug.Assert(property.PrimitiveOrComplexCollectionItemType.IsAssignableFrom(collectionItem.GetType()), "Type of materialized collection items have to be compatible with the type of collection items in the actual collection property.");
property.AddValueToBackingICollectionInstance(collectionInstance, collectionItem);
}
results.Add(collectionInstance);
}
else
{
#if ASTORIA_OPEN_OBJECT
property.SetValue(this.entity, child, this.propertyName, ref openProperties, false);
#else
// it is either primitive type, complex type or 1..1 navigation property so we just allow setting the value but not adding.
property.SetValue(this.entity, child, this.propertyName, false);
results.Add(child);
#endif
}
}
}
continuation = materializer.GetContinuation(null);
}
return(MaterializeAtom.CreateWrapper(context, results, continuation));
}
finally
{
context.ApplyingChanges = merging;
}
}
private void MergeLists(MaterializerEntry entry, ClientPropertyAnnotation property, IEnumerable list, Uri nextLink, ProjectionPlan plan)
{
if ((entry.ShouldUpdateFromPayload && (property.NullablePropertyType == list.GetType())) && (property.GetValue(entry.ResolvedObject) == null))
{
property.SetValue(entry.ResolvedObject, list, property.PropertyName, false);
this.FoundNextLinkForCollection(list, nextLink, plan);
foreach (object obj2 in list)
{
this.log.AddedLink(entry, property.PropertyName, obj2);
}
}
else
{
this.ApplyItemsToCollection(entry, property, list, nextLink, plan);
}
}
protected static void ApplyDataValue(ClientTypeAnnotation type, ODataProperty property, bool ignoreMissingProperties, System.Data.Services.Client.ResponseInfo responseInfo, object instance)
{
ClientPropertyAnnotation annotation = type.GetProperty(property.Name, ignoreMissingProperties);
if (annotation != null)
{
if (annotation.IsPrimitiveOrComplexCollection)
{
if (property.Value == null)
{
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Collection_NullCollectionNotSupported(property.Name));
}
if (property.Value is string)
{
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Deserialize_MixedTextWithComment);
}
if (property.Value is ODataComplexValue)
{
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.AtomMaterializer_InvalidCollectionItem(property.Name));
}
object obj2 = annotation.GetValue(instance);
if (obj2 == null)
{
obj2 = CreateCollectionInstance(property, annotation.PropertyType, responseInfo);
annotation.SetValue(instance, obj2, property.Name, false);
}
else
{
annotation.ClearBackingICollectionInstance(obj2);
}
ApplyCollectionDataValues(property, ignoreMissingProperties, responseInfo, obj2, annotation.PrimitiveOrComplexCollectionItemType, new Action <object, object>(annotation.AddValueToBackingICollectionInstance));
}
else
{
object obj3 = property.Value;
ODataComplexValue value2 = obj3 as ODataComplexValue;
if ((obj3 != null) && (value2 != null))
{
if (!annotation.EdmProperty.Type.IsComplex())
{
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Deserialize_ExpectingSimpleValue);
}
bool flag = false;
ClientEdmModel model = ClientEdmModel.GetModel(responseInfo.MaxProtocolVersion);
ClientTypeAnnotation clientTypeAnnotation = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(annotation.PropertyType));
object obj4 = annotation.GetValue(instance);
if (obj4 == null)
{
obj4 = clientTypeAnnotation.CreateInstance();
flag = true;
}
MaterializeDataValues(clientTypeAnnotation, value2.Properties, ignoreMissingProperties);
ApplyDataValues(clientTypeAnnotation, value2.Properties, ignoreMissingProperties, responseInfo, obj4);
if (flag)
{
annotation.SetValue(instance, obj4, property.Name, true);
}
}
else
{
MaterializePrimitiveDataValue(annotation.NullablePropertyType, property);
annotation.SetValue(instance, property.GetMaterializedValue(), property.Name, true);
}
}
}
}
private MaterializeAtom ReadPropertyFromAtom(EntityDescriptor box, ClientPropertyAnnotation property)
{
MaterializeAtom atom2;
DataServiceContext source = (DataServiceContext)base.Source;
bool applyingChanges = source.ApplyingChanges;
try
{
source.ApplyingChanges = true;
bool flag2 = EntityStates.Deleted == box.State;
bool instanceCreated = false;
object instance = null;
if (property.IsEntityCollection)
{
instance = this.GetCollectionInstance(property, out instanceCreated);
}
Type type = property.IsEntityCollection ? property.EntityCollectionItemType : property.NullablePropertyType;
IList results = (IList)Activator.CreateInstance(typeof(List <>).MakeGenericType(new Type[] { type }));
DataServiceQueryContinuation continuation = null;
using (MaterializeAtom atom = base.GetMaterializer(this.plan))
{
bool flag4 = property.EdmProperty.PropertyKind == EdmPropertyKind.Navigation;
int num = 0;
foreach (object obj3 in atom)
{
if (property.IsEntityCollection)
{
property.SetValue(instance, obj3, this.propertyName, true);
results.Add(obj3);
}
else if (property.IsPrimitiveOrComplexCollection)
{
object obj4 = property.GetValue(this.entity);
if (obj4 == null)
{
obj4 = Activator.CreateInstance(obj3.GetType());
property.SetValue(this.entity, obj4, this.propertyName, false);
}
else
{
property.ClearBackingICollectionInstance(obj4);
}
foreach (object obj5 in (IEnumerable)obj3)
{
property.AddValueToBackingICollectionInstance(obj4, obj5);
}
results.Add(obj4);
}
else
{
property.SetValue(this.entity, obj3, this.propertyName, false);
results.Add(obj3);
}
num++;
if (((obj3 != null) && (MergeOption.NoTracking != atom.MergeOptionValue)) && flag4)
{
if (flag2)
{
source.DeleteLink(this.entity, this.propertyName, obj3);
}
else
{
source.AttachLink(this.entity, this.propertyName, obj3, atom.MergeOptionValue);
}
}
}
continuation = atom.GetContinuation(null);
Util.SetNextLinkForCollection(property.IsEntityCollection ? instance : this.entity, continuation);
}
if (instanceCreated)
{
property.SetValue(this.entity, instance, this.propertyName, false);
}
atom2 = MaterializeAtom.CreateWrapper(source, results, continuation);
}
finally
{
source.ApplyingChanges = applyingChanges;
}
return(atom2);
}