/// <summary>
/// Applies the collection data values to a collection instance.
/// </summary>
/// <param name="items">The items.</param>
/// <param name="wireTypeName">Name of the wire type.</param>
/// <param name="collectionInstance">The collection instance.</param>
/// <param name="collectionItemType">Type of the collection item.</param>
/// <param name="addValueToBackingICollectionInstance">The add value to backing I collection instance.</param>
/// <param name="isElementNullable">If element type is nullable.</param>
internal void ApplyCollectionDataValues(
IEnumerable items,
string wireTypeName,
object collectionInstance,
Type collectionItemType,
Action <object, object> addValueToBackingICollectionInstance,
bool isElementNullable)
{
Debug.Assert(collectionInstance != null, "collectionInstance != null");
Debug.Assert(WebUtil.IsCLRTypeCollection(collectionInstance.GetType(), this.materializerContext.Model), "collectionInstance must be a CollectionValue");
Debug.Assert(collectionItemType.IsAssignableFrom(
ClientTypeUtil.GetImplementationType(collectionInstance.GetType(), typeof(ICollection <>)).GetGenericArguments()[0]),
"collectionItemType has to match the collectionInstance generic type.");
Debug.Assert(!ClientTypeUtil.TypeIsEntity(collectionItemType, this.materializerContext.Model), "CollectionValues cannot contain entities");
Debug.Assert(addValueToBackingICollectionInstance != null, "AddValueToBackingICollectionInstance != null");
// is the Collection not empty ?
if (items != null)
{
bool isCollectionItemTypePrimitive = PrimitiveType.IsKnownNullableType(collectionItemType);
foreach (object item in items)
{
if (!isElementNullable && item == null)
{
throw DSClient.Error.InvalidOperation(DSClient.Strings.Collection_NullCollectionItemsNotSupported);
}
ODataEnumValue enumVal = null;
// Is it a Collection of primitive types?
if (isCollectionItemTypePrimitive)
{
if (item is ODataCollectionValue)
{
throw DSClient.Error.InvalidOperation(DSClient.Strings.Collection_CollectionTypesInCollectionOfPrimitiveTypesNotAllowed);
}
object materializedValue = this.primitiveValueMaterializationPolicy.MaterializePrimitiveDataValueCollectionElement(collectionItemType, wireTypeName, item);
addValueToBackingICollectionInstance(collectionInstance, materializedValue);
}
else if ((enumVal = item as ODataEnumValue) != null)
{
// TODO: use EnumValueMaterializationPolicy.MaterializeEnumDataValueCollectionElement() here
object tmpValue = EnumValueMaterializationPolicy.MaterializeODataEnumValue(collectionItemType, enumVal);
addValueToBackingICollectionInstance(collectionInstance, tmpValue);
}
else
{
if (item != null)
{
throw DSClient.Error.InvalidOperation(DSClient.Strings.Collection_PrimitiveTypesInCollectionOfComplexTypesNotAllowed);
}
addValueToBackingICollectionInstance(collectionInstance, null);
}
}
}
}
/// <summary>
/// Convert an instance annotation to clr object.
/// </summary>
/// <param name="instanceAnnotation">Instance annotation to be converted</param>
/// <param name="clrInstanceAnnotation">The clr object</param>
/// <returns>A dictionary of clr-typed instance annotation</returns>
private bool TryConvertToClrInstanceAnnotation(ODataInstanceAnnotation instanceAnnotation, out object clrInstanceAnnotation)
{
clrInstanceAnnotation = null;
var primitiveValue = instanceAnnotation.Value as ODataPrimitiveValue;
if (primitiveValue != null)
{
clrInstanceAnnotation = primitiveValue.Value;
return(true);
}
var enumValue = instanceAnnotation.Value as ODataEnumValue;
if (enumValue != null)
{
var type = this.MaterializerContext.Context.ResolveTypeFromName(enumValue.TypeName);
if (type != null)
{
clrInstanceAnnotation = EnumValueMaterializationPolicy.MaterializeODataEnumValue(type, enumValue);
return(true);
}
return(false);
}
var collectionValue = instanceAnnotation.Value as ODataCollectionValue;
if (collectionValue != null)
{
var serverSideModel = this.MaterializerContext.Context.Format.LoadServiceModel();
var valueTerm = serverSideModel.FindTerm(instanceAnnotation.Name);
if (valueTerm != null && valueTerm.Type != null && valueTerm.Type.Definition != null)
{
var edmCollectionType = valueTerm.Type.Definition as IEdmCollectionType;
if (edmCollectionType != null)
{
Type collectionItemType = null;
var elementType = edmCollectionType.ElementType;
PrimitiveType primitiveType;
if (PrimitiveType.TryGetPrimitiveType(elementType.FullName(), out primitiveType))
{
collectionItemType = primitiveType.ClrType;
}
else
{
collectionItemType = this.MaterializerContext.Context.ResolveTypeFromName(elementType.FullName());
}
if (collectionItemType != null)
{
Type collectionICollectionType = typeof(ICollection <>).MakeGenericType(new Type[] { collectionItemType });
ClientTypeAnnotation collectionClientTypeAnnotation = this.MaterializerContext.ResolveTypeForMaterialization(
collectionICollectionType,
collectionValue.TypeName);
bool isElementNullable = edmCollectionType.ElementType.IsNullable;
var collectionInstance = this.CollectionValueMaterializationPolicy.CreateCollectionInstance(
collectionClientTypeAnnotation.EdmTypeReference as IEdmCollectionTypeReference,
collectionClientTypeAnnotation.ElementType);
this.CollectionValueMaterializationPolicy.ApplyCollectionDataValues(
collectionValue.Items,
collectionValue.TypeName,
collectionInstance,
collectionItemType,
ClientTypeUtil.GetAddToCollectionDelegate(collectionICollectionType),
isElementNullable);
clrInstanceAnnotation = collectionInstance;
return(true);
}
}
}
return(false);
}
var nullValue = instanceAnnotation.Value as ODataNullValue;
if (nullValue != null)
{
clrInstanceAnnotation = null;
return(true);
}
return(false);
}
/// <summary>Applies a data value to the specified <paramref name="instance"/>.</summary>
/// <param name="type">Type to which a property value will be applied.</param>
/// <param name="property">Property with value to apply.</param>
/// <param name="instance">Instance on which value will be applied.</param>
internal void ApplyDataValue(ClientTypeAnnotation type, ODataProperty property, object instance)
{
Debug.Assert(type != null, "type != null");
Debug.Assert(property != null, "property != null");
Debug.Assert(instance != null, "instance != null");
var prop = type.GetProperty(property.Name, this.MaterializerContext.UndeclaredPropertyBehavior);
if (prop == null)
{
return;
}
// Is it a collection? (note: property.Properties will be null if the Collection is empty (contains no elements))
Type enumTypeTmp = null;
if (prop.IsPrimitiveOrEnumOrComplexCollection)
{
// Collections must not be null
if (property.Value == null)
{
throw DSClient.Error.InvalidOperation(DSClient.Strings.Collection_NullCollectionNotSupported(property.Name));
}
// This happens if the payload contain just primitive value for a Collection property
if (property.Value is string)
{
throw DSClient.Error.InvalidOperation(DSClient.Strings.Deserialize_MixedTextWithComment);
}
// ODataLib already parsed the data and materialized all the primitive types. There is nothing more to materialize
// anymore. Only complex type instance and collection instances need to be materialized, but those will be
// materialized later on.
// We need to materialize items before we change collectionInstance since this may throw. If we tried materializing
// after the Collection is wiped or created we would leave the object in half constructed state.
object collectionInstance = prop.GetValue(instance);
if (collectionInstance == null)
{
collectionInstance = this.CollectionValueMaterializationPolicy.CreateCollectionPropertyInstance(property, prop.PropertyType);
// allowAdd is false - we need to assign instance as the new property value
prop.SetValue(instance, collectionInstance, property.Name, false /* allowAdd? */);
}
else
{
// Clear existing Collection
prop.ClearBackingICollectionInstance(collectionInstance);
}
bool isElementNullable = prop.EdmProperty.Type.AsCollection().ElementType().IsNullable;
this.CollectionValueMaterializationPolicy.ApplyCollectionDataValues(
property,
collectionInstance,
prop.PrimitiveOrComplexCollectionItemType,
prop.AddValueToBackingICollectionInstance,
isElementNullable);
}
else if ((enumTypeTmp = Nullable.GetUnderlyingType(prop.NullablePropertyType) ?? prop.NullablePropertyType) != null &&
enumTypeTmp.IsEnum())
{
ODataEnumValue enumValue = property.Value as ODataEnumValue;
object tmpValue = EnumValueMaterializationPolicy.MaterializeODataEnumValue(enumTypeTmp, enumValue);
// TODO: 1. use EnumValueMaterializationPolicy 2. handle nullable enum property
prop.SetValue(instance, tmpValue, property.Name, false /* allowAdd? */);
}
else
{
this.MaterializePrimitiveDataValue(prop.NullablePropertyType, property);
prop.SetValue(instance, property.GetMaterializedValue(), property.Name, true /* allowAdd? */);
}
if (!this.MaterializerContext.Context.DisableInstanceAnnotationMaterialization)
{
// Apply instance annotation for Property
this.InstanceAnnotationMaterializationPolicy.SetInstanceAnnotations(property, type.ElementType, instance);
}
}