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//---------------------------------------------------------------------
// <copyright file="ObjectItemAttributeAssemblyLoader.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//
// @owner Microsoft
// @backupOwner Microsoft
//---------------------------------------------------------------------
namespace System.Data.Metadata.Edm
{
using System.Collections.Generic;
using System.Data.Entity;
using System.Data.Objects.DataClasses;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
/// <summary>
/// Class for representing a collection of items for the object layer.
/// Most of the implemetation for actual maintainance of the collection is
/// done by ItemCollection
/// </summary>
internal sealed class ObjectItemAttributeAssemblyLoader : ObjectItemAssemblyLoader
{
#region Fields
// list of unresolved navigation properties
private readonly List<Action> _unresolvedNavigationProperties = new List<Action>();
private new MutableAssemblyCacheEntry CacheEntry { get { return (MutableAssemblyCacheEntry)base.CacheEntry; } }
private List<Action> _referenceResolutions = new List<Action>();
#endregion
#region Constructor
internal ObjectItemAttributeAssemblyLoader(Assembly assembly, ObjectItemLoadingSessionData sessionData)
:base(assembly, new MutableAssemblyCacheEntry(), sessionData)
{
Debug.Assert(Create == sessionData.ObjectItemAssemblyLoaderFactory, "Why is there a different factory creating this class");
}
#endregion
#region Methods
internal override void OnLevel1SessionProcessing()
{
foreach (Action resolve in _referenceResolutions)
{
resolve();
}
}
internal override void OnLevel2SessionProcessing()
{
foreach (Action resolve in _unresolvedNavigationProperties)
{
resolve();
}
}
/// <summary>
/// Loads the given assembly and all the other referencd assemblies in the cache. If the assembly was already present
/// then it loads from the cache
/// </summary>
/// <param name="context"></param>
/// <returns>true if the assembly was already loaded in the cache</returns>
internal override void Load()
{
Debug.Assert(IsSchemaAttributePresent(SourceAssembly), "LoadAssembly shouldn't be called with assembly having no schema attribute");
Debug.Assert(!SessionData.KnownAssemblies.Contains(SourceAssembly, SessionData.ObjectItemAssemblyLoaderFactory, SessionData.EdmItemCollection), "InternalLoadAssemblyFromCache: This assembly must not be present in the list of known assemblies");
base.Load();
}
protected override void AddToAssembliesLoaded()
{
SessionData.AssembliesLoaded.Add(SourceAssembly, CacheEntry);
}
/// <summary>
/// Check to see if the type is already loaded - either in the typesInLoading, or ObjectItemCollection or
/// in the global cache
/// </summary>
/// <param name="clrType"></param>
/// <param name="edmType"></param>
/// <returns></returns>
private bool TryGetLoadedType(Type clrType, out EdmType edmType)
{
if (SessionData.TypesInLoading.TryGetValue(clrType.FullName, out edmType) ||
TryGetCachedEdmType(clrType, out edmType))
{
// Check to make sure the CLR type we got is the same as the given one
if (edmType.ClrType != clrType)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NewTypeConflictsWithExistingType(
clrType.AssemblyQualifiedName, edmType.ClrType.AssemblyQualifiedName), edmType));
edmType = null;
return false;
}
return true;
}
// Let's check to see if this type is a ref type, a nullable type, or a collection type, these are the types that
// we need to take special care of them
if (clrType.IsGenericType)
{
Type genericType = clrType.GetGenericTypeDefinition();
// Try to resolve the element type into a type object
EdmType elementType;
if (!TryGetLoadedType(clrType.GetGenericArguments()[0], out elementType))
return false;
if (typeof(System.Collections.IEnumerable).IsAssignableFrom(clrType))
{
EntityType entityType = elementType as EntityType;
if (entityType == null)
{
// return null and let the caller deal with the error handling
return false;
}
edmType = entityType.GetCollectionType();
}
else
{
edmType = elementType;
}
return true;
}
edmType = null;
return false;
}
private bool TryGetCachedEdmType(Type clrType, out EdmType edmType)
{
Debug.Assert(!SessionData.TypesInLoading.ContainsKey(clrType.FullName), "This should be called only after looking in typesInLoading");
Debug.Assert(SessionData.EdmItemErrors.Count > 0 || // had an error during loading
clrType.GetCustomAttributes(typeof(EdmTypeAttribute), false /*inherit*/).Length == 0 || // not a type we track
SourceAssembly != clrType.Assembly, // not from this assembly
"Given that we don't have any error, if the type is part of this assembly, it should not be loaded from the cache");
ImmutableAssemblyCacheEntry immutableCacheEntry;
if (SessionData.LockedAssemblyCache.TryGetValue(clrType.Assembly, out immutableCacheEntry))
{
Debug.Assert(SessionData.KnownAssemblies.Contains(clrType.Assembly, SessionData.LoaderCookie, SessionData.EdmItemCollection), "We should only be loading things directly from the cache if they are already in the collection");
return immutableCacheEntry.TryGetEdmType(clrType.FullName, out edmType);
}
edmType = null;
return false;
}
#endregion
/// <summary>
/// Loads the set of types from the given assembly and adds it to the given list of types
/// </summary>
/// <param name="context">context containing information for loading</param>
protected override void LoadTypesFromAssembly()
{
Debug.Assert(CacheEntry.TypesInAssembly.Count == 0);
LoadRelationshipTypes();
// Loop through each type in the assembly and process it
foreach (Type type in EntityUtil.GetTypesSpecial(SourceAssembly))
{
// If the type doesn't have the same EdmTypeAttribute defined, then it's not a special type
// that we care about, skip it.
if (!type.IsDefined(typeof(EdmTypeAttribute), false))
{
continue;
}
// Generic type is not supported, if the user attributed this generic type using EdmTypeAttribute,
// then the exception message can help them better understand what is going on instead of just
// failing at a much later point of OC type mapping lookup with a super generic error message
if (type.IsGenericType)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.GenericTypeNotSupported(type.FullName), null));
continue;
}
// Load the metadata for this type
LoadType(type);
}
if (_referenceResolutions.Count != 0)
{
SessionData.RegisterForLevel1PostSessionProcessing(this);
}
if (_unresolvedNavigationProperties.Count != 0)
{
SessionData.RegisterForLevel2PostSessionProcessing(this);
}
}
/// <summary>
/// This method loads all the relationship type that this entity takes part in
/// </summary>
/// <param name="entityType"></param>
/// <param name="context"></param>
private void LoadRelationshipTypes()
{
foreach (EdmRelationshipAttribute roleAttribute in SourceAssembly.GetCustomAttributes(typeof(EdmRelationshipAttribute), false /*inherit*/))
{
// Check if there is an entry already with this name
if (TryFindNullParametersInRelationshipAttribute(roleAttribute))
{
// don't give more errors for these same bad parameters
continue;
}
bool errorEncountered = false;
// return error if the role names are the same
if (roleAttribute.Role1Name == roleAttribute.Role2Name)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.SameRoleNameOnRelationshipAttribute(roleAttribute.RelationshipName, roleAttribute.Role2Name),
null));
errorEncountered = true;
}
if (!errorEncountered)
{
AssociationType associationType = new AssociationType(roleAttribute.RelationshipName, roleAttribute.RelationshipNamespaceName, roleAttribute.IsForeignKey, DataSpace.OSpace);
SessionData.TypesInLoading.Add(associationType.FullName, associationType);
TrackClosure(roleAttribute.Role1Type);
TrackClosure(roleAttribute.Role2Type);
// prevent lifting of loop vars
string r1Name = roleAttribute.Role1Name;
Type r1Type = roleAttribute.Role1Type;
RelationshipMultiplicity r1Multiplicity = roleAttribute.Role1Multiplicity;
AddTypeResolver(() =>
ResolveAssociationEnd(associationType, r1Name, r1Type, r1Multiplicity));
// prevent lifting of loop vars
string r2Name = roleAttribute.Role2Name;
Type r2Type = roleAttribute.Role2Type;
RelationshipMultiplicity r2Multiplicity = roleAttribute.Role2Multiplicity;
AddTypeResolver(() =>
ResolveAssociationEnd(associationType, r2Name, r2Type, r2Multiplicity));
// get assembly entry and add association type to the list of types in the assembly
Debug.Assert(!CacheEntry.ContainsType(associationType.FullName), "Relationship type must not be present in the list of types");
CacheEntry.TypesInAssembly.Add(associationType);
}
}
}
private void ResolveAssociationEnd(AssociationType associationType, string roleName, Type clrType, RelationshipMultiplicity multiplicity)
{
EntityType entityType;
if (!TryGetRelationshipEndEntityType(clrType, out entityType))
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.RoleTypeInEdmRelationshipAttributeIsInvalidType(associationType.Name, roleName, clrType),
null));
return;
}
associationType.AddKeyMember(new AssociationEndMember(roleName, entityType.GetReferenceType(), multiplicity));
}
/// <summary>
/// Load metadata of the given type - when you call this method, you should check and make sure that the type has
/// edm attribute. If it doesn't,we won't load the type and it will be returned as null
/// </summary>
/// <param name="clrType"></param>
/// <param name="context"></param>
/// <returns></returns>
private void LoadType(Type clrType)
{
Debug.Assert(clrType.Assembly == SourceAssembly, "Why are we loading a type that is not in our assembly?");
Debug.Assert(!SessionData.TypesInLoading.ContainsKey(clrType.FullName), "Trying to load a type that is already loaded???");
Debug.Assert(!clrType.IsGenericType, "Generic type is not supported");
EdmType edmType = null;
EdmTypeAttribute[] typeAttributes = (EdmTypeAttribute[])clrType.GetCustomAttributes(typeof(EdmTypeAttribute), false /*inherit*/);
// the CLR doesn't allow types to have duplicate/multiple attribute declarations
if (typeAttributes.Length != 0)
{
if (clrType.IsNested)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NestedClassNotSupported(clrType.FullName, clrType.Assembly.FullName), null));
return;
}
EdmTypeAttribute typeAttribute = typeAttributes[0];
string cspaceTypeName = String.IsNullOrEmpty(typeAttribute.Name) ? clrType.Name : typeAttribute.Name;
if (String.IsNullOrEmpty(typeAttribute.NamespaceName) && clrType.Namespace == null)
{
SessionData.EdmItemErrors.Add(new EdmItemError(Strings.Validator_TypeHasNoNamespace, edmType));
return;
}
string cspaceNamespaceName = String.IsNullOrEmpty(typeAttribute.NamespaceName) ? clrType.Namespace : typeAttribute.NamespaceName;
if (typeAttribute.GetType() == typeof(EdmEntityTypeAttribute))
{
edmType = new ClrEntityType(clrType, cspaceNamespaceName, cspaceTypeName);
}
else if(typeAttribute.GetType() == typeof(EdmComplexTypeAttribute))
{
edmType = new ClrComplexType(clrType, cspaceNamespaceName, cspaceTypeName);
}
else
{
Debug.Assert(typeAttribute is EdmEnumTypeAttribute, "Invalid type attribute encountered");
// Note that TryGetPrimitiveType() will return false not only for types that are not primitive
// but also for CLR primitive types that are valid underlying enum types in CLR but are not
// a valid Edm primitive types (e.g. ulong)
PrimitiveType underlyingEnumType;
if (!ClrProviderManifest.Instance.TryGetPrimitiveType(clrType.GetEnumUnderlyingType(), out underlyingEnumType))
{
SessionData.EdmItemErrors.Add(
new EdmItemError(
Strings.Validator_UnsupportedEnumUnderlyingType(clrType.GetEnumUnderlyingType().FullName),
edmType));
return;
}
edmType = new ClrEnumType(clrType, cspaceNamespaceName, cspaceTypeName);
}
}
else
{
// not a type we are interested
return;
}
Debug.Assert(!CacheEntry.ContainsType(edmType.Identity), "This type must not be already present in the list of types for this assembly");
// Also add this to the list of the types for this assembly
CacheEntry.TypesInAssembly.Add(edmType);
// Add this to the known type map so we won't try to load it again
SessionData.TypesInLoading.Add(clrType.FullName, edmType);
// Load properties for structural type
if (Helper.IsStructuralType(edmType))
{
//Load base type only for entity type - not sure if we will allow complex type inheritance
if (Helper.IsEntityType(edmType))
{
TrackClosure(clrType.BaseType);
AddTypeResolver(
() => edmType.BaseType = ResolveBaseType(clrType.BaseType));
}
// Load the properties for this type
LoadPropertiesFromType((StructuralType)edmType);
}
return;
}
private void AddTypeResolver(Action resolver)
{
_referenceResolutions.Add(resolver);
}
private EdmType ResolveBaseType(Type type)
{
EdmType edmType;
if (type.GetCustomAttributes(typeof(EdmEntityTypeAttribute), false).Length > 0 && TryGetLoadedType(type, out edmType))
{
return edmType;
}
return null;
}
private bool TryFindNullParametersInRelationshipAttribute(EdmRelationshipAttribute roleAttribute)
{
if (roleAttribute.RelationshipName == null)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NullRelationshipNameforEdmRelationshipAttribute(SourceAssembly.FullName), null));
return true;
}
bool nullsFound = false;
if (roleAttribute.RelationshipNamespaceName == null)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NullParameterForEdmRelationshipAttribute(
"RelationshipNamespaceName", roleAttribute.RelationshipName), null));
nullsFound = true;
}
if (roleAttribute.Role1Name == null)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NullParameterForEdmRelationshipAttribute(
"Role1Name", roleAttribute.RelationshipName), null));
nullsFound = true;
}
if (roleAttribute.Role1Type == null)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NullParameterForEdmRelationshipAttribute(
"Role1Type", roleAttribute.RelationshipName), null));
nullsFound = true;
}
if (roleAttribute.Role2Name == null)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NullParameterForEdmRelationshipAttribute(
"Role2Name", roleAttribute.RelationshipName), null));
nullsFound = true;
}
if (roleAttribute.Role2Type == null)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NullParameterForEdmRelationshipAttribute(
"Role2Type", roleAttribute.RelationshipName), null));
nullsFound = true;
}
return nullsFound;
}
private bool TryGetRelationshipEndEntityType(Type type, out EntityType entityType)
{
if (type == null)
{
entityType = null;
return false;
}
EdmType edmType;
if (!TryGetLoadedType(type, out edmType) || !Helper.IsEntityType(edmType))
{
entityType = null;
return false;
}
entityType = (EntityType)edmType;
return true;
}
/// <summary>
/// Load all the property metadata of the given type
/// </summary>
/// <param name="type">The CLR entity type</param>
/// <param name="structuralType">The type where properties are loaded</param>
/// <param name="context"></param>
private void LoadPropertiesFromType(StructuralType structuralType)
{
// Look at both public, internal, and private instanced properties declared at this type, inherited members
// are not looked at. Internal and private properties are also looked at because they are also schematized fields
PropertyInfo[] properties = structuralType.ClrType.GetProperties(PropertyReflectionBindingFlags);
foreach (PropertyInfo property in properties)
{
EdmMember newMember = null;
bool isEntityKeyProperty = false; //used for EdmScalarProperties only
// EdmScalarPropertyAttribute, EdmComplexPropertyAttribute and EdmRelationshipNavigationPropertyAttribute
// are all EdmPropertyAttributes that we need to process. If the current property is not an EdmPropertyAttribute
// we will just ignore it and skip to the next property.
if (property.IsDefined(typeof(EdmRelationshipNavigationPropertyAttribute), false))
{
// keep the loop var from being lifted
PropertyInfo pi = property;
_unresolvedNavigationProperties.Add(() =>
ResolveNavigationProperty(structuralType, pi));
}
else if (property.IsDefined(typeof(EdmScalarPropertyAttribute), false))
{
if ((Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType).IsEnum)
{
TrackClosure(property.PropertyType);
PropertyInfo local = property;
AddTypeResolver(() => ResolveEnumTypeProperty(structuralType, local));
}
else
{
newMember = LoadScalarProperty(structuralType.ClrType, property, out isEntityKeyProperty);
}
}
else if (property.IsDefined(typeof(EdmComplexPropertyAttribute), false))
{
TrackClosure(property.PropertyType);
// keep loop var from being lifted
PropertyInfo local = property;
AddTypeResolver(() => ResolveComplexTypeProperty(structuralType, local));
}
if (newMember == null)
{
// Property does not have one of the following attributes:
// EdmScalarPropertyAttribute, EdmComplexPropertyAttribute, EdmRelationshipNavigationPropertyAttribute
// This means its an unmapped property and can be ignored.
// Or there were error encountered while loading the properties
continue;
}
// Add the property object to the type
structuralType.AddMember(newMember);
// Add to the entity's collection of key members
// Do this here instead of in the if condition above for scalar properties because
// we want to make sure the AddMember call above did not fail before updating the key members
if (Helper.IsEntityType(structuralType) && isEntityKeyProperty)
{
((EntityType)structuralType).AddKeyMember(newMember);
}
}
}
internal void ResolveNavigationProperty(StructuralType declaringType, PropertyInfo propertyInfo)
{
Debug.Assert(propertyInfo.IsDefined(typeof(EdmRelationshipNavigationPropertyAttribute), false), "The property must have navigation property defined");
// EdmScalarPropertyAttribute, EdmComplexPropertyAttribute and EdmRelationshipNavigationPropertyAttribute
// are all EdmPropertyAttributes that we need to process. If the current property is not an EdmPropertyAttribute
// we will just ignore it and skip to the next property.
object[] relationshipPropertyAttributes = propertyInfo.GetCustomAttributes(typeof(EdmRelationshipNavigationPropertyAttribute), false);
Debug.Assert(relationshipPropertyAttributes.Length == 1, "There should be exactly one property for every navigation property");
// The only valid return types from navigation properties are:
// (1) EntityType
// (2) CollectionType containing valid EntityType
// If TryGetLoadedType returned false, it could mean that we couldn't validate any part of the type, or it could mean that it's a generic
// where the main generic type was validated, but the generic type parameter was not. We can't tell the difference, so just fail
// with the same error message in both cases. The user will have to figure out which part of the type is wrong.
// We can't just rely on checking for a generic because it can lead to a scenario where we report that the type parameter is invalid
// when really it's the main generic type. That is more confusing than reporting the full name and letting the user determine the problem.
EdmType propertyType;
if (!TryGetLoadedType(propertyInfo.PropertyType, out propertyType) || !(propertyType.BuiltInTypeKind == BuiltInTypeKind.EntityType || propertyType.BuiltInTypeKind == BuiltInTypeKind.CollectionType))
{
// Once an error is detected the property does not need to be validated further, just add to the errors
// collection and continue with the next property. The failure will cause an exception to be thrown later during validation of all of the types.
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.Validator_OSpace_InvalidNavPropReturnType(propertyInfo.Name, propertyInfo.DeclaringType.FullName, propertyInfo.PropertyType.FullName), null));
return;
}
// else we have a valid EntityType or CollectionType that contains EntityType. ResolveNonSchemaType enforces that a collection type
// must contain an EntityType, and if it doesn't, propertyType will be null here. If propertyType is EntityType or CollectionType we know it is valid
// Expecting EdmRelationshipNavigationPropertyAttribute to have AllowMultiple=False, so only look at first element in the attribute array
EdmRelationshipNavigationPropertyAttribute attribute = (EdmRelationshipNavigationPropertyAttribute)relationshipPropertyAttributes[0];
EdmMember member = null;
EdmType type;
if (SessionData.TypesInLoading.TryGetValue(attribute.RelationshipNamespaceName + "." + attribute.RelationshipName, out type) &&
Helper.IsAssociationType(type))
{
AssociationType relationshipType = (AssociationType)type;
if (relationshipType != null)
{
// The return value of this property has been verified, so create the property now
NavigationProperty navigationProperty = new NavigationProperty(propertyInfo.Name, TypeUsage.Create(propertyType), propertyInfo);
navigationProperty.RelationshipType = relationshipType;
member = navigationProperty;
if (relationshipType.Members[0].Name == attribute.TargetRoleName)
{
navigationProperty.ToEndMember = (RelationshipEndMember)relationshipType.Members[0];
navigationProperty.FromEndMember = (RelationshipEndMember)relationshipType.Members[1];
}
else if (relationshipType.Members[1].Name == attribute.TargetRoleName)
{
navigationProperty.ToEndMember = (RelationshipEndMember)relationshipType.Members[1];
navigationProperty.FromEndMember = (RelationshipEndMember)relationshipType.Members[0];
}
else
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.TargetRoleNameInNavigationPropertyNotValid(
propertyInfo.Name, propertyInfo.DeclaringType.FullName, attribute.TargetRoleName, attribute.RelationshipName), navigationProperty));
member = null;
}
if (member != null &&
((RefType)navigationProperty.FromEndMember.TypeUsage.EdmType).ElementType.ClrType != declaringType.ClrType)
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.NavigationPropertyRelationshipEndTypeMismatch(
declaringType.FullName,
navigationProperty.Name,
relationshipType.FullName,
navigationProperty.FromEndMember.Name,
((RefType)navigationProperty.FromEndMember.TypeUsage.EdmType).ElementType.ClrType), navigationProperty));
member = null;
}
}
}
else
{
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.RelationshipNameInNavigationPropertyNotValid(
propertyInfo.Name, propertyInfo.DeclaringType.FullName, attribute.RelationshipName), declaringType));
}
if (member != null)
{
declaringType.AddMember(member);
}
}
/// <summary>
/// Load the property with scalar property attribute.
/// Note that we pass the CLR type in because in the case where the property is declared on a generic
/// base class the DeclaringType of propert won't work for us and we need the real entity type instead.
/// </summary>
/// <param name="type">The CLR type of the entity</param>
/// <param name="property">Metadata representing the property</param>
/// <param name="isEntityKeyProperty">True if the property forms part of the entity's key</param>
/// <returns></returns>
private EdmMember LoadScalarProperty(Type clrType, PropertyInfo property, out bool isEntityKeyProperty)
{
Debug.Assert(property.IsDefined(typeof(EdmScalarPropertyAttribute), false), "The property must have a scalar attribute");
EdmMember member = null;
isEntityKeyProperty = false;
// Load the property type and create a new property object
PrimitiveType primitiveType;
// If the type could not be loaded it's definitely not a primitive type, so that's an error
// If it could be loaded but is not a primitive that's an error as well
if (!TryGetPrimitiveType(property.PropertyType, out primitiveType))
{
// This property does not need to be validated further, just add to the errors collection and continue with the next property
// This failure will cause an exception to be thrown later during validation of all of the types
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.Validator_OSpace_ScalarPropertyNotPrimitive(property.Name, property.DeclaringType.FullName, property.PropertyType.FullName), null));
}
else
{
object[] attrs = property.GetCustomAttributes(typeof(EdmScalarPropertyAttribute), false);
Debug.Assert(attrs.Length == 1, "Every property can exactly have one ScalarProperty Attribute");
// Expecting EdmScalarPropertyAttribute to have AllowMultiple=False, so only look at first element in the attribute array
isEntityKeyProperty = ((EdmScalarPropertyAttribute)attrs[0]).EntityKeyProperty;
bool isNullable = ((EdmScalarPropertyAttribute)attrs[0]).IsNullable;
member = new EdmProperty(property.Name,
TypeUsage.Create(primitiveType, new FacetValues { Nullable = isNullable }),
property, clrType.TypeHandle);
}
return member;
}
/// <summary>
/// Resolves enum type property.
/// </summary>
/// <param name="declaringType">The type to add the declared property to.</param>
/// <param name="clrProperty">Property to resolve.</param>
private void ResolveEnumTypeProperty(StructuralType declaringType, PropertyInfo clrProperty)
{
Debug.Assert(declaringType != null, "type != null");
Debug.Assert(clrProperty != null, "clrProperty != null");
Debug.Assert(
(Nullable.GetUnderlyingType(clrProperty.PropertyType) ?? clrProperty.PropertyType).IsEnum,
"This method should be called for enums only");
EdmType propertyType;
if (!TryGetLoadedType(clrProperty.PropertyType, out propertyType) || !Helper.IsEnumType(propertyType))
{
SessionData.EdmItemErrors.Add(
new EdmItemError(
System.Data.Entity.Strings.Validator_OSpace_ScalarPropertyNotPrimitive(
clrProperty.Name,
clrProperty.DeclaringType.FullName,
clrProperty.PropertyType.FullName), null));
}
else
{
var edmScalarPropertyAttribute = (EdmScalarPropertyAttribute)clrProperty.GetCustomAttributes(typeof(EdmScalarPropertyAttribute), false).Single();
EdmProperty enumProperty = new EdmProperty(
clrProperty.Name,
TypeUsage.Create(propertyType, new FacetValues() { Nullable = edmScalarPropertyAttribute.IsNullable }),
clrProperty,
declaringType.ClrType.TypeHandle);
declaringType.AddMember(enumProperty);
if (declaringType.BuiltInTypeKind == BuiltInTypeKind.EntityType && edmScalarPropertyAttribute.EntityKeyProperty)
{
((EntityType)declaringType).AddKeyMember(enumProperty);
}
}
}
private void ResolveComplexTypeProperty(StructuralType type, PropertyInfo clrProperty)
{
// Load the property type and create a new property object
EdmType propertyType;
// If the type could not be loaded it's definitely not a complex type, so that's an error
// If it could be loaded but is not a complex type that's an error as well
if (!TryGetLoadedType(clrProperty.PropertyType, out propertyType) || propertyType.BuiltInTypeKind != BuiltInTypeKind.ComplexType)
{
// This property does not need to be validated further, just add to the errors collection and continue with the next property
// This failure will cause an exception to be thrown later during validation of all of the types
SessionData.EdmItemErrors.Add(new EdmItemError(System.Data.Entity.Strings.Validator_OSpace_ComplexPropertyNotComplex(clrProperty.Name, clrProperty.DeclaringType.FullName, clrProperty.PropertyType.FullName), null));
}
else
{
EdmProperty newProperty = new EdmProperty(clrProperty.Name,
TypeUsage.Create(propertyType, new FacetValues { Nullable = false }),
clrProperty, type.ClrType.TypeHandle);
type.AddMember(newProperty);
}
}
private void TrackClosure(Type type)
{
if (SourceAssembly != type.Assembly &&
!CacheEntry.ClosureAssemblies.Contains(type.Assembly) &&
IsSchemaAttributePresent(type.Assembly) &&
!(type.IsGenericType &&
(
EntityUtil.IsAnICollection(type) || // EntityCollection<>, List<>, ICollection<>
type.GetGenericTypeDefinition() == typeof(System.Data.Objects.DataClasses.EntityReference<>) ||
type.GetGenericTypeDefinition() == typeof(System.Nullable<>)
)
)
)
{
CacheEntry.ClosureAssemblies.Add(type.Assembly);
}
if (type.IsGenericType)
{
foreach (Type genericArgument in type.GetGenericArguments())
{
TrackClosure(genericArgument);
}
}
}
internal static bool IsSchemaAttributePresent(Assembly assembly)
{
return assembly.IsDefined(typeof(EdmSchemaAttribute), false /*inherit*/);
}
internal static ObjectItemAssemblyLoader Create(Assembly assembly, ObjectItemLoadingSessionData sessionData)
{
if (ObjectItemAttributeAssemblyLoader.IsSchemaAttributePresent(assembly))
{
return new ObjectItemAttributeAssemblyLoader(assembly, sessionData);
}
else
{
return new ObjectItemNoOpAssemblyLoader(assembly, sessionData);
}
}
}
}
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