/// <summary>
/// Creates an <see cref="IEdmModel"/> based on a combination of the ObjectContext's properties and it's metadata workspace
/// </summary>
/// <param name="context">The object context instance</param>
/// <returns>An <see cref="IEdmModel"/> based on a combination of the ObjectContext's properties and it's metadata workspace</returns>
public static IEdmModel CreateModel(ObjectContext context)
{
Assembly objectLayerAssembly = context.GetType().Assembly;
ConstructableMetadata metadata = new ConstructableMetadata(context.DefaultContainerName, ("DBNorthwindModel"));
foreach (EntityType entityType in context.MetadataWorkspace.GetItems<EntityType>(DataSpace.CSpace))
{
Type clrType = objectLayerAssembly.GetType("Microsoft.Test.Taupo.OData.WCFService.Model." + entityType.Name, false, true);
IEdmEntityType edmEntityType = metadata.AddEntityType(entityType.Name, clrType, null, false, "DBNorthwindModel");
AddProperties(metadata, entityType.Properties, edmEntityType);
}
foreach (var entitySet in context.GetType().GetProperties().Where(property => property.PropertyType.GetInterface("IQueryable") != null))
{
Type entityType = entitySet.PropertyType.GetGenericArguments().First();
IEdmEntityType edmEntityType = metadata.FindType("DBNorthwindModel." + entityType.Name) as IEdmEntityType;
metadata.AddEntitySet(entitySet.Name, edmEntityType);
}
return metadata;
}
/// <summary>
/// Adds Associations to the EDM model based on an Entity Data Model Schema
/// </summary>
/// <param name="model">EDM model to append to</param>
/// <param name="model">Entity Data Model Schema to get associations from</param>
private static void AddNavigationProperties(ConstructableMetadata model, IEdmEntityType entityType, IEnumerable<NavigationProperty> properties)
{
foreach (NavigationProperty property in properties)
{
if (property.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many)
{
model.AddResourceSetReferenceProperty(
entityType,
property.Name,
model.FindEntitySet(property.ToEndMember.GetEntityType().Name),
model.FindType(property.ToEndMember.GetEntityType().FullName) as IEdmEntityType
);
}
else
{
model.AddResourceReferenceProperty(
entityType,
property.Name,
model.FindEntitySet(property.ToEndMember.GetEntityType().Name),
model.FindType(property.ToEndMember.GetEntityType().FullName) as IEdmEntityType
);
}
}
}
/// <summary>
/// Adds a Primitive Property to <paramref name="metadata"/>
/// </summary>
/// <param name="metadata">Metadata document to be added to</param>
/// <param name="type">The type of the primitive property</param>
/// <param name="property">Property to add</param>
/// <param name="structuredType">Structured type to add property to</param>
private static void AddPrimitiveProperty(ConstructableMetadata metadata, Type type, EdmProperty property, IEdmStructuredType structuredType)
{
if (property.DeclaringType is EntityType && ((EntityType)property.DeclaringType).KeyMembers.Contains(property.Name))
{
metadata.AddKeyProperty(structuredType, property.Name, type, IsETagProperty(property));
}
else if (type == typeof(Stream))
{
metadata.AddNamedStreamProperty(structuredType, property.Name);
}
else
{
metadata.AddPrimitiveProperty(structuredType, property.Name, type, IsETagProperty(property));
}
}
/// <summary>
/// Adds the <paramref name="properties"/> to the <paramref name="metadata"/>
/// Recursively calls self to add complex types as needed
/// </summary>
/// <param name="metadata">The metadata document to add properties to</param>
/// <param name="properties">The properties to add to the metadata document</param>
/// <param name="structuredType">The type that these elements belong to</param>
private static void AddProperties(ConstructableMetadata metadata, IEnumerable<EdmProperty> properties, IEdmStructuredType structuredType)
{
foreach (EdmProperty property in properties)
{
AddProperty(metadata, property, structuredType);
}
}
/// <summary>
/// Gets the edm model. Constructs it if it doesn't exist
/// </summary>
/// <returns>Edm model</param>
public IEdmModel GetModel()
{
if (this.model == null)
{
ConstructableMetadata metadata = new ConstructableMetadata("InMemoryEntities", "Microsoft.Test.Taupo.OData.WCFService");
IEdmComplexType addressType = metadata.AddComplexType("Address", typeof(Address), null, false);
metadata.AddPrimitiveProperty(addressType, "Street", typeof(string));
metadata.AddPrimitiveProperty(addressType, "City", typeof(string));
metadata.AddPrimitiveProperty(addressType, "PostalCode", typeof(string));
IEdmComplexType homeAddressType = metadata.AddComplexType("HomeAddress", typeof(HomeAddress), addressType, false);
metadata.AddPrimitiveProperty(homeAddressType, "HomeNO", typeof(string));
IEdmEntityType personType = metadata.AddEntityType("Person", typeof(Person), null, false, "Microsoft.Test.Taupo.OData.WCFService");
metadata.AddKeyProperty(personType, "PersonID", typeof(Int32));
metadata.AddPrimitiveProperty(personType, "FirstName", typeof(string));
metadata.AddPrimitiveProperty(personType, "LastName", typeof(string));
metadata.AddComplexProperty(personType, "HomeAddress", addressType);
metadata.AddPrimitiveProperty(personType, "Home", typeof(GeographyPoint));
metadata.AddMultiValueProperty(personType, "Numbers", typeof(string));
metadata.AddContainedResourceSetReferenceProperty(personType, "Brother", personType);
metadata.AddContainedResourceReferenceProperty(personType, "Child", personType);
var peopleset = metadata.AddEntitySet("People", personType);
var specialPerson = metadata.AddSingleton("SpecialPerson", personType);
IEdmEntityType customerType = metadata.AddEntityType("Customer", typeof(Customer), personType, false, "Microsoft.Test.Taupo.OData.WCFService");
metadata.AddPrimitiveProperty(customerType, "City", typeof(string));
metadata.AddPrimitiveProperty(customerType, "Birthday", typeof(DateTimeOffset));
metadata.AddPrimitiveProperty(customerType, "TimeBetweenLastTwoOrders", typeof(TimeSpan));
var customerset = metadata.AddEntitySet("Customers", customerType);
var vipCustomer = metadata.AddSingleton("VipCustomer", customerType);
IEdmEntityType employeeType = metadata.AddEntityType("Employee", typeof(Employee), personType, false, "Microsoft.Test.Taupo.OData.WCFService", true);
metadata.AddPrimitiveProperty(employeeType, "DateHired", typeof(DateTimeOffset));
metadata.AddPrimitiveProperty(employeeType, "Office", typeof(GeographyPoint));
var employeeset = metadata.AddEntitySet("Employees", employeeType);
var boss = metadata.AddSingleton("Boss", employeeType);
IEdmEntityType productType = metadata.AddEntityType("Product", typeof(Product), null, false, "Microsoft.Test.Taupo.OData.WCFService");
metadata.AddKeyProperty(productType, "ProductID", typeof(Int32));
metadata.AddPrimitiveProperty(productType, "Name", typeof(string));
metadata.AddPrimitiveProperty(productType, "QuantityPerUnit", typeof(string));
metadata.AddPrimitiveProperty(productType, "UnitPrice", typeof(float));
metadata.AddPrimitiveProperty(productType, "QuantityInStock", typeof(Int32));
metadata.AddPrimitiveProperty(productType, "Discontinued", typeof(bool));
metadata.AddComplexProperty(productType, "ManufactureAddresss", addressType, true);
var productset = metadata.AddEntitySet("Products", productType);
var specialProduct = metadata.AddSingleton("SpecialProduct", productType);
IEdmEntityType orderType = metadata.AddEntityType("Order", typeof(Order), null, false, "Microsoft.Test.Taupo.OData.WCFService");
var orderset = metadata.AddEntitySet("Orders", orderType);
metadata.AddKeyProperty(orderType, "OrderID", typeof(Int32));
metadata.AddPrimitiveProperty(orderType, "CustomerID", typeof(Int32));
metadata.AddPrimitiveProperty(orderType, "EmployeeID", typeof(Int32?));
metadata.AddPrimitiveProperty(orderType, "OrderDate", typeof(DateTimeOffset));
metadata.AddResourceReferenceProperty(orderType, "LoggedInEmployee", employeeset, null);
metadata.AddResourceReferenceProperty(orderType, "CustomerForOrder", customerset, null);
var specialOrder = metadata.AddSingleton("SpecialOrder", orderType);
metadata.AddContainedResourceReferenceProperty(personType, "FirstOrder", orderType);
IEdmEntityType orderDetailType = metadata.AddEntityType("OrderDetail", typeof(OrderDetail), null, false, "Microsoft.Test.Taupo.OData.WCFService");
metadata.AddKeyProperty(orderDetailType, "OrderID", typeof(Int32));
metadata.AddKeyProperty(orderDetailType, "ProductID", typeof(Int32));
metadata.AddPrimitiveProperty(orderDetailType, "OrderPlaced", typeof(DateTimeOffset));
metadata.AddPrimitiveProperty(orderDetailType, "Quantity", typeof(Int32));
metadata.AddPrimitiveProperty(orderDetailType, "UnitPrice", typeof(float));
var productOrderedNavigation = metadata.AddResourceReferenceProperty(orderDetailType, "ProductOrdered", productset, null);
var associatedOrderNavigation = metadata.AddResourceReferenceProperty(orderDetailType, "AssociatedOrder", orderset, null);
var orderdetailsSet = metadata.AddEntitySet("OrderDetails", orderDetailType);
// Edm.Duration
IEdmEntityType durationInKeyType = metadata.AddEntityType("DurationInKey", typeof(DurationInKey), null, false, "Microsoft.Test.Taupo.OData.WCFService");
metadata.AddKeyProperty(durationInKeyType, "Id", typeof(TimeSpan));
metadata.AddEntitySet("DurationInKeys", durationInKeyType);
// FUNCTIONS
// Function that binds to single order
metadata.AddFunctionAndFunctionImport("GetOrderRate", orderType.ToTypeReference(), MetadataUtils.GetPrimitiveTypeReference(typeof (Int32)), null, true);
//Function that binds to a single order and returns a single order
metadata.AddFunction("GetNextOrder", orderType.ToTypeReference(), orderType.ToTypeReference(), true, new EdmPathExpression("bindingparameter"), true);
// Function that returns a set of orders
var collectionOrders = new EdmCollectionType(orderType.ToTypeReference()).ToTypeReference();
metadata.AddFunction("OrdersWithMoreThanTwoItems", collectionOrders, collectionOrders, true, new EdmPathExpression("bindingparameter"), true /*iscomposable*/);
var overload1Function = metadata.AddFunction("OrdersWithMoreThanTwoItems", collectionOrders, collectionOrders, true, new EdmPathExpression("bindingparameter"), true /*iscomposable*/);
overload1Function.AddParameter("IntParameter", MetadataUtils.GetPrimitiveTypeReference(typeof (Int32)));
var overload2Function = metadata.AddFunction("OrdersWithMoreThanTwoItems", collectionOrders, collectionOrders, true, new EdmPathExpression("bindingparameter"), true /*iscomposable*/);
overload2Function.AddParameter("IntParameter", MetadataUtils.GetPrimitiveTypeReference(typeof(Int32)));
overload2Function.AddParameter("EntityParameter", productType.ToTypeReference());
var collectionCustomers = new EdmCollectionType(customerType.ToTypeReference()).ToTypeReference();
var customersInCityFunction = metadata.AddFunction("InCity", collectionCustomers, collectionCustomers, true, new EdmPathExpression("bindingparameter"), true /*iscomposable*/);
customersInCityFunction.AddParameter("City", MetadataUtils.GetPrimitiveTypeReference(typeof(String)));
var customersWithinFunction = metadata.AddFunction("Within", collectionCustomers, collectionCustomers, true, new EdmPathExpression("bindingparameter"), true /*iscomposable*/);
customersWithinFunction.AddParameter("Location", MetadataUtils.GetPrimitiveTypeReference(typeof(GeographyPoint)));
customersWithinFunction.AddParameter("Address", addressType.ToTypeReference(true /*nullable*/));
customersWithinFunction.AddParameter("Distance", MetadataUtils.GetPrimitiveTypeReference(typeof(Double)));
customersWithinFunction.AddParameter("ArbitraryInt", MetadataUtils.GetPrimitiveTypeReference(typeof(Int32)));
customersWithinFunction.AddParameter("DateTimeOffset", MetadataUtils.GetPrimitiveTypeReference(typeof(DateTimeOffset?)));
customersWithinFunction.AddParameter("Byte", MetadataUtils.GetPrimitiveTypeReference(typeof(Byte)));
customersWithinFunction.AddParameter("LineString", MetadataUtils.GetPrimitiveTypeReference(typeof(GeometryLineString)));
var withinFunction = metadata.AddFunction("Within", customerType.ToTypeReference(), MetadataUtils.GetPrimitiveTypeReference(typeof(bool)), true, null, true /*iscomposable*/);
withinFunction.AddParameter("Location", addressType.ToTypeReference());
withinFunction.AddParameter("Distance", MetadataUtils.GetPrimitiveTypeReference(typeof(Int32)));
var withinFunction2 = metadata.AddFunction("Within", customerType.ToTypeReference(), MetadataUtils.GetPrimitiveTypeReference(typeof(bool)), true, null, true /*iscomposable*/);
withinFunction2.AddParameter("Distance", MetadataUtils.GetPrimitiveTypeReference(typeof(Int32)));
metadata.AddFunction("GetChild", personType.ToTypeReference(), personType.ToTypeReference(), true, new EdmPathExpression("bindingparameter/Child"), true /*iscomposable*/);
metadata.AddAction("GetBrothers", personType.ToTypeReference(), new EdmCollectionTypeReference(new EdmCollectionType(personType.ToTypeReference())), true, new EdmPathExpression("bindingparameter/Child"));
//Unbound Functions
var lotsofOrders = metadata.AddFunctionAndFunctionImport("HasLotsOfOrders",
null,
MetadataUtils.GetPrimitiveTypeReference(typeof(bool)),
null,
false /*isBindable*/);
lotsofOrders.Function.AsEdmFunction().AddParameter("Person", personType.ToTypeReference());
metadata.AddFunctionAndFunctionImport("HowManyPotatoesEaten", null, MetadataUtils.GetPrimitiveTypeReference(typeof(Int32)), null, false);
metadata.AddFunctionAndFunctionImport("QuoteOfTheDay", null, MetadataUtils.GetPrimitiveTypeReference(typeof(string)), null, false);
// ACTIONS
var action1 = metadata.AddAction("ChangeAddress", personType.ToTypeReference(), null /*returnType*/, true /*isbound*/, null /*entitySetPathExpression*/);
action1.AddParameter(new EdmOperationParameter(action1, "Street", MetadataUtils.GetPrimitiveTypeReference(typeof(string))));
action1.AddParameter(new EdmOperationParameter(action1, "City", MetadataUtils.GetPrimitiveTypeReference(typeof(string))));
action1.AddParameter(new EdmOperationParameter(action1, "PostalCode", MetadataUtils.GetPrimitiveTypeReference(typeof(string))));
metadata.AddActionImport("ChangeAddress", action1, null /*entitySet*/);
// Unbound action with no parameters
var getRecentCustomersAction = metadata.AddAction("GetRecentCustomers", null /*boundType*/, new EdmCollectionTypeReference(new EdmCollectionType(orderType.ToTypeReference())), false /*isbound*/, null /*entitySetPathExpression*/);
metadata.AddActionImport("GetRecentCustomers", getRecentCustomersAction, orderset);
//Adding order details navigation property to order.
var orderDetailNavigation = metadata.AddResourceSetReferenceProperty(orderType, "OrderDetails", orderdetailsSet, null);
//Adding orders navigation to Customer.
var ordersNavigation = metadata.AddResourceSetReferenceProperty(customerType, "Orders", orderset, null);
((EdmEntitySet)customerset).AddNavigationTarget(ordersNavigation, orderset);
//Adding parent navigation to person
metadata.AddResourceSetReferenceProperty(personType, "Parent", null, personType);
//Since the people set can contain a customer we need to include the target for that navigation in the people set.
((EdmEntitySet)peopleset).AddNavigationTarget(ordersNavigation, orderset);
//Since the OrderSet can contain a OrderDetail we need to include the target for that navigation in the order set.
((EdmEntitySet)orderset).AddNavigationTarget(orderDetailNavigation, orderdetailsSet);
//Since the OrderDetailSet can contain a AssociatedOrder we need to include the target for that navigation in the orderdetail set.
((EdmEntitySet)orderdetailsSet).AddNavigationTarget(associatedOrderNavigation, orderset);
//Since the OrderDetailSet can contain a ProductOrdered we need to include the target for that navigation in the orderdetail set.
((EdmEntitySet)orderdetailsSet).AddNavigationTarget(productOrderedNavigation, productset);
((EdmSingleton)specialOrder).AddNavigationTarget(orderDetailNavigation, orderdetailsSet);
((EdmSingleton)specialPerson).AddNavigationTarget(ordersNavigation, orderset);
this.model = metadata;
}
return this.model;
}
/// <summary>
/// Adds a <paramref name="property"/> to <paramref name="metadata"/>
/// under type <paramref name="structuredType"/>
/// </summary>
/// <param name="metadata">Metadata document to be added to</param>
/// <param name="property">Property to add</param>
/// <param name="structuredType">Structured type to add property to</param>
private static void AddProperty(ConstructableMetadata metadata, EdmProperty property, IEdmStructuredType structuredType)
{
if (property.BuiltInTypeKind == BuiltInTypeKind.EdmProperty)
{
AddPrimitiveProperty(metadata, DataTypeToSystemType((PrimitiveType)property.TypeUsage.EdmType, IsNullable(property.TypeUsage)), property, structuredType);
}
else if (property.BuiltInTypeKind == BuiltInTypeKind.ComplexType)
{
metadata.AddComplexProperty(structuredType, property.Name, metadata.FindType(property.TypeUsage.EdmType.FullName) as IEdmComplexType);
}
}
/// <summary>
/// Creates metadata properties for the specified enumeration of OData OM properties.
/// </summary>
/// <param name="model">The model to use.</param>
/// <param name="owningType">The owning type to which to add the properties.</param>
/// <param name="properties">Enumeration of the properties to add.</param>
private static void CreateMetadataProperties(ConstructableMetadata model, EdmStructuredType owningType, IEnumerable<ODataProperty> properties)
{
if (properties == null)
{
return;
}
EdmEntityType owningEntityType = owningType as EdmEntityType;
foreach (ODataProperty property in properties)
{
ODataPropertyMetadataAnnotation propertyMetadataAnnotation = property.GetInheritedAnnotation<ODataPropertyMetadataAnnotation>();
object propertyValue = property.Value;
bool isOpenProperty = false;
if (propertyMetadataAnnotation != null)
{
isOpenProperty = propertyMetadataAnnotation.IsOpenProperty;
ExceptionUtilities.Assert(
!isOpenProperty || owningType is EdmEntityType,
"Can't declare an open property on non-entity type.");
if (propertyMetadataAnnotation.PropertyValueForTypeInference != null)
{
propertyValue = propertyMetadataAnnotation.PropertyValueForTypeInference;
}
}
ODataComplexValue complexValue = propertyValue as ODataComplexValue;
if (complexValue != null)
{
ProcessComplexProperty(model, owningType, complexValue, isOpenProperty);
}
else
{
bool isKeyProperty = false;
if (propertyMetadataAnnotation != null)
{
isKeyProperty = (propertyMetadataAnnotation.Kind & ODataPropertyKind.Key) == ODataPropertyKind.Key;
bool isETagProperty = (propertyMetadataAnnotation.Kind & ODataPropertyKind.ETag) == ODataPropertyKind.ETag;
ExceptionUtilities.Assert(
!isKeyProperty || owningType is EdmEntityType,
"Can't declare a key property on non-entity type.");
ExceptionUtilities.Assert(
!isETagProperty || owningType is EdmEntityType,
"Can't declare an etag property on non-entity type.");
ExceptionUtilities.Assert(
!isOpenProperty || !(isKeyProperty || isETagProperty),
"Key or etag property can't be open.");
}
if (owningEntityType != null && isOpenProperty)
{
//TODO: figure out how to set entity type to open after creation.
}
else
{
if (owningEntityType != null && isKeyProperty)
{
ExceptionUtilities.Assert(propertyValue != null,
"Found a key property with null value, can't infer type from value in that case and it's invalid anyway.");
var keyPropertyType = GetPrimitiveTypeReference(propertyValue.GetType());
var keyProperty = owningEntityType.AddStructuralProperty(property.Name, keyPropertyType);
owningEntityType.AddKeys(keyProperty);
}
else
{
if (propertyValue is ODataCollectionValue)
{
ProcessCollectionProperty(model, owningType, propertyValue, owningEntityType, property);
}
else
{
Type propertyType = propertyValue == null ? typeof(string) : propertyValue.GetType();
owningType.AddProperty(new EdmStructuralProperty(owningType, property.Name, GetPrimitiveTypeReference(propertyType)));
}
}
}
}
}
}
/// <summary>
/// Creates metadata for an entity derived from the data.
/// </summary>
/// <param name="model">The created model.</param>
/// <param name="namespaceName">The namespace name for the new type(s).</param>
/// <param name="entry">The entry to create the metadata for.</param>
/// <returns>The entity type of the created entity.</returns>
public static IEdmEntityType CreateEntityMetadata(string namespaceName, ODataEntry entry, out IEdmModel model)
{
var metadata = new ConstructableMetadata("DefaultContainer", namespaceName);
ExceptionUtilities.Assert(entry.TypeName.StartsWith(namespaceName + "."), "The type name must start with Namespace.");
EdmEntityType entityType = metadata.AddEntityType(entry.TypeName, null, null, false) as EdmEntityType;
CreateMetadataProperties(metadata, entityType, entry.Properties);
model = metadata;
return entityType;
}
private static void ProcessComplexProperty(ConstructableMetadata model, EdmStructuredType owningType, ODataComplexValue complexValue, bool isOpenProperty)
{
string namespaceName = "";
var schematype = owningType as IEdmSchemaType;
if (schematype != null)
{
namespaceName = schematype.Namespace;
}
ExceptionUtilities.Assert(complexValue.TypeName.StartsWith(namespaceName + "."), "The type name must start with the same namespace as its owning type.");
EdmComplexType complexType = model.FindType(complexValue.TypeName) as EdmComplexType;
if (complexType == null)
{
string complexTypeLocalName = complexValue.GetUnqualifiedTypeName(namespaceName);
complexType = model.AddComplexType(complexTypeLocalName, null, null, false) as EdmComplexType;
CreateMetadataProperties(model, complexType, complexValue.Properties);
}
if (isOpenProperty)
{
//TODO: Find way to set parent type to open.
}
else
{
ExceptionUtilities.CheckObjectNotNull(complexType, "Complex type cannot be null");
owningType.AddProperty(new EdmStructuralProperty(owningType, complexType.Name, complexType.ToTypeReference()));
}
}
private static IEdmCollectionType GetCollectionType(ConstructableMetadata model, IEdmPrimitiveTypeReference primitiveItemType, string itemTypeName)
{
if (primitiveItemType != null)
{
return new EdmCollectionType(primitiveItemType);
}
IEdmType itemType = model.FindDeclaredType(itemTypeName);
IEdmComplexType complexItemType = itemType as IEdmComplexType;
if (complexItemType != null)
{
return new EdmCollectionType(complexItemType.ToTypeReference());
}
return null;
}
private static void ProcessCollectionProperty(ConstructableMetadata model, EdmStructuredType owningType, object propertyValue, EdmEntityType owningEntityType, ODataProperty property)
{
string itemTypeName = EdmModelUtils.GetCollectionItemTypeName(((ODataCollectionValue)propertyValue).TypeName);
IEdmPrimitiveTypeReference primitiveItemType = MetadataUtils.GetPrimitiveTypeReference(itemTypeName);
IEdmCollectionType collectionType = GetCollectionType(model, primitiveItemType, itemTypeName);
ExceptionUtilities.Assert(collectionType != null, "Could not resolve item type.");
owningType.AddProperty(new EdmStructuralProperty(owningType, property.Name, collectionType.ToTypeReference()));
}