/// <summary>
/// Constructor taking a metadata context, an structural type, and a parent custom type descriptor
/// </summary>
/// <param name="typeDescriptionContext">The <see cref="LinqToEntitiesTypeDescriptionContext"/> context.</param>
/// <param name="edmType">The <see cref="StructuralType"/> type (can be an entity or complex type).</param>
/// <param name="parent">The parent custom type descriptor.</param>
public LinqToEntitiesTypeDescriptor(LinqToEntitiesTypeDescriptionContext typeDescriptionContext, StructuralType edmType, ICustomTypeDescriptor parent)
: base(parent)
{
_typeDescriptionContext = typeDescriptionContext;
_edmType = edmType;
EdmMember[] timestampMembers = _edmType.Members.Where(p => ObjectContextUtilities.IsConcurrencyTimestamp(p)).ToArray();
if (timestampMembers.Length == 1)
{
_timestampMember = timestampMembers[0];
}
if (edmType.BuiltInTypeKind == BuiltInTypeKind.EntityType)
{
// if any FK member of any association is also part of the primary key, then the key cannot be marked
// Editable(false)
EntityType entityType = (EntityType)edmType;
_foreignKeyMembers = new HashSet<EdmMember>(entityType.NavigationProperties.SelectMany(p => p.GetDependentProperties()));
foreach (EdmProperty foreignKeyMember in _foreignKeyMembers)
{
if (entityType.KeyMembers.Contains(foreignKeyMember))
{
_keyIsEditable = true;
break;
}
}
}
}
// effects: try to find setter expression for the given member
// requires: command tree must be an insert or update tree (since other DML trees hnabve
private static bool TryGetSetterExpression(
DbModificationCommandTree tree, EdmMember member, ModificationOperator op, out DbSetClause setter)
{
Debug.Assert(op == ModificationOperator.Insert || op == ModificationOperator.Update, "only inserts and updates have setters");
IEnumerable<DbModificationClause> clauses;
if (ModificationOperator.Insert == op)
{
clauses = ((DbInsertCommandTree)tree).SetClauses;
}
else
{
clauses = ((DbUpdateCommandTree)tree).SetClauses;
}
foreach (DbSetClause setClause in clauses)
{
// check if this is the correct setter
if (((DbPropertyExpression)setClause.Property).Property.EdmEquals(member))
{
setter = setClause;
return true;
}
}
// no match found
setter = null;
return false;
}
// <summary>
// Given the type in the target space and the member name in the source space,
// get the corresponding member in the target space
// For e.g. consider a Conceptual Type 'Abc' with a member 'Def' and a CLR type
// 'XAbc' with a member 'YDef'. If one has a reference to Abc one can
// invoke GetMember(Abc,"YDef") to retrieve the member metadata for Def
// </summary>
// <param name="type"> The type in the target perspective </param>
// <param name="memberName"> the name of the member in the source perspective </param>
// <param name="ignoreCase"> Whether to do case-sensitive member look up or not </param>
// <param name="outMember"> returns the member in target space, if a match is found </param>
internal virtual bool TryGetMember(StructuralType type, String memberName, bool ignoreCase, out EdmMember outMember)
{
DebugCheck.NotNull(type);
Check.NotEmpty(memberName, "memberName");
outMember = null;
return type.Members.TryGetValue(memberName, ignoreCase, out outMember);
}
internal ExplicitDiscriminatorMap(DiscriminatorMap template)
{
m_typeMap = template.TypeMap;
m_discriminatorProperty = template.Discriminator.Property;
m_properties = new ReadOnlyCollection<EdmProperty>(template.PropertyMap.Select(propertyValuePair => propertyValuePair.Key)
.ToList());
}
internal ExplicitDiscriminatorMap(DiscriminatorMap template)
{
m_typeMap = template.TypeMap;
m_discriminatorProperty = template.Discriminator.Property;
m_properties = template.PropertyMap.Select(propertyValuePair => propertyValuePair.Key)
.ToList().AsReadOnly();
}
internal EntityProxyMemberInfo(EdmMember member, int propertyIndex)
{
Debug.Assert(member != null, "member must be non-null");
Debug.Assert(propertyIndex > -1, "propertyIndex must be non-negative");
_member = member;
_propertyIndex = propertyIndex;
}
internal EntityProxyMemberInfo(EdmMember member, int propertyIndex)
{
DebugCheck.NotNull(member);
Debug.Assert(propertyIndex > -1, "propertyIndex must be non-negative");
_member = member;
_propertyIndex = propertyIndex;
}
/// <summary>
/// Initializes a new <see cref="T:System.Data.Entity.Core.Common.FieldMetadata" /> object with the specified ordinal value and field type.
/// </summary>
/// <param name="ordinal">An integer specified the location of the metadata.</param>
/// <param name="fieldType">The field type.</param>
public FieldMetadata(int ordinal, EdmMember fieldType)
{
if (ordinal < 0)
{
throw new ArgumentOutOfRangeException("ordinal");
}
Check.NotNull(fieldType, "fieldType");
_fieldType = fieldType;
_ordinal = ordinal;
}
/// <summary>
/// Used to construct a field metadata object relating a column ordinal and an ImemberMetadata.
/// </summary>
/// <param name="ordinal"> Column oridnal </param>
/// <param name="fieldType"> Metadata member </param>
public FieldMetadata(int ordinal, EdmMember fieldType)
{
if (ordinal < 0)
{
throw new ArgumentOutOfRangeException("ordinal");
}
if (null == fieldType)
{
throw new ArgumentNullException("fieldType");
}
_fieldType = fieldType;
_ordinal = ordinal;
}
/// <summary>
/// Given the type in the target space and the member name in the source space,
/// get the corresponding member in the target space
/// For e.g. consider a Conceptual Type Foo with a member bar and a CLR type
/// XFoo with a member YBar. If one has a reference to Foo one can
/// invoke GetMember(Foo,"YBar") to retrieve the member metadata for bar
/// </summary>
/// <param name="type"> The type in the target perspective </param>
/// <param name="memberName"> the name of the member in the source perspective </param>
/// <param name="ignoreCase"> true for case-insensitive lookup </param>
/// <param name="outMember"> returns the edmMember if a match is found </param>
/// <returns> true if a match is found, otherwise false </returns>
internal override bool TryGetMember(StructuralType type, String memberName, bool ignoreCase, out EdmMember outMember)
{
outMember = null;
Map map = null;
if (MetadataWorkspace.TryGetMap(type, DataSpace.OCSpace, out map))
{
var objectTypeMap = map as ObjectTypeMapping;
if (objectTypeMap != null)
{
var objPropertyMapping = objectTypeMap.GetMemberMapForClrMember(memberName, ignoreCase);
if (null != objPropertyMapping)
{
outMember = objPropertyMapping.EdmMember;
return true;
}
}
}
return false;
}
// <summary>
// Add an entry that the given property of the given var is a computation represented
// by the computationTemplate over the var represented by the given groupAggregateVarInfo
// </summary>
internal void Add(
Var var, GroupAggregateVarInfo groupAggregateVarInfo, Node computationTemplate, bool isUnnested, EdmMember property)
{
if (property == null)
{
Add(var, groupAggregateVarInfo, computationTemplate, isUnnested);
return;
}
if (_groupAggregateVarRelatedVarPropertyToInfo == null)
{
_groupAggregateVarRelatedVarPropertyToInfo = new Dictionary<Var, Dictionary<EdmMember, GroupAggregateVarRefInfo>>();
}
Dictionary<EdmMember, GroupAggregateVarRefInfo> varPropertyDictionary;
if (!_groupAggregateVarRelatedVarPropertyToInfo.TryGetValue(var, out varPropertyDictionary))
{
varPropertyDictionary = new Dictionary<EdmMember, GroupAggregateVarRefInfo>();
_groupAggregateVarRelatedVarPropertyToInfo.Add(var, varPropertyDictionary);
}
varPropertyDictionary.Add(property, new GroupAggregateVarRefInfo(groupAggregateVarInfo, computationTemplate, isUnnested));
// Note: The following line is not necessary with the current usage pattern, this method is
// never called with a new groupAggregateVarInfo thus it is a no-op.
_groupAggregateVarInfos.Add(groupAggregateVarInfo);
}
private RecordColumnMap CreateRecordColumnMap(TypeInfo typeInfo, string name)
{
PlanCompiler.Assert(typeInfo.Type.EdmType is md.RowType, "not RowType");
SimpleColumnMap nullSentinelColumnMap = null;
if (typeInfo.HasNullSentinelProperty)
{
nullSentinelColumnMap = CreateSimpleColumnMap(
md.Helper.GetModelTypeUsage(typeInfo.NullSentinelProperty), c_NullSentinelColumnName);
}
var properties = TypeHelpers.GetProperties(typeInfo.Type);
var propertyColumnMapList = new ColumnMap[properties.Count];
for (var i = 0; i < propertyColumnMapList.Length; ++i)
{
md.EdmMember property = properties[i];
propertyColumnMapList[i] = CreateColumnMap(md.Helper.GetModelTypeUsage(property), property.Name);
}
var result = new RecordColumnMap(typeInfo.Type, name, propertyColumnMapList, nullSentinelColumnMap);
return(result);
}
internal static IEnumerable<EpmPropertyInformation> GetEpmInformationFromProperty(EdmMember edmMember)
{
return GetEpmPropertyInformation(edmMember, edmMember.DeclaringType.Name, edmMember.Name);
}
public bool CanProxyMember(EdmMember member)
{
return _members.Contains(member);
}
/// <summary>
/// Construct an interception delegate for the specified proxy member.
/// </summary>
/// <param name="member"> EdmMember that specifies the member to be intercepted. </param>
/// <param name="proxyType"> Type of the proxy. </param>
/// <param name="lazyLoadBehavior"> LazyLoadBehavior object that supplies the behavior to load related ends. </param>
private static void InterceptMember(EdmMember member, Type proxyType, EntityProxyTypeInfo proxyTypeInfo)
{
var property = EntityUtil.GetTopProperty(proxyType, member.Name);
Debug.Assert(
property != null,
String.Format(
CultureInfo.CurrentCulture, "Expected property {0} to be defined on proxy type {1}", member.Name, proxyType.FullName));
var interceptorField = proxyType.GetField(
LazyLoadImplementor.GetInterceptorFieldName(member.Name),
BindingFlags.DeclaredOnly | BindingFlags.Static | BindingFlags.NonPublic);
Debug.Assert(
interceptorField != null,
String.Format(
CultureInfo.CurrentCulture, "Expected interceptor field for property {0} to be defined on proxy type {1}", member.Name,
proxyType.FullName));
var interceptorDelegate =
typeof(LazyLoadBehavior).GetMethod("GetInterceptorDelegate", BindingFlags.NonPublic | BindingFlags.Static).
MakeGenericMethod(proxyType, property.PropertyType).
Invoke(null, new object[] { member, proxyTypeInfo.EntityWrapperDelegate }) as Delegate;
AssignInterceptionDelegate(interceptorDelegate, interceptorField);
}
/// <summary>Adds a member to this type</summary>
/// <param name="member"> The member to add </param>
public void AddMember(EdmMember member)
{
this.AddMember(member, false);
}
private static int FindPosition(EdmType type, EdmMember member)
{
var pos = 0;
foreach (EdmMember m in TypeHelpers.GetAllStructuralMembers(type))
{
if (m.EdmEquals(member))
{
return pos;
}
pos++;
}
PlanCompiler.Assert(false, "Could not find property " + member + " in type " + type.Name);
return -1;
}
private static bool NonPrimitiveMemberMatchesByConvention(PropertyInfo clrProperty, EdmMember cspaceMember)
{
return !clrProperty.PropertyType.IsValueType() && !clrProperty.PropertyType.IsAssignableFrom(typeof(string))
&& clrProperty.Name == cspaceMember.Name;
}
/// <summary>Removes a member from this type.</summary>
/// <param name="member">The member to remove.</param>
public virtual void RemoveMember(EdmMember member)
{
Check.NotNull <EdmMember>(member, nameof(member));
Util.ThrowIfReadOnly((MetadataItem)this);
this._members.Remove(member);
}
internal virtual void NotifyItemIdentityChanged(EdmMember item, string initialIdentity)
{
this._members.HandleIdentityChange(item, initialIdentity);
}
// <summary>
// Load all the property metadata of the given type
// </summary>
// <param name="structuralType"> The type where properties are loaded </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
var properties = structuralType.ClrType.GetDeclaredProperties().Where(p => !p.IsStatic());
foreach (var property in properties)
{
EdmMember newMember = null;
var 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.GetCustomAttributes <EdmRelationshipNavigationPropertyAttribute>(inherit: false).Any())
{
// keep the loop var from being lifted
var pi = property;
_unresolvedNavigationProperties.Add(
() =>
ResolveNavigationProperty(structuralType, pi));
}
else if (property.GetCustomAttributes <EdmScalarPropertyAttribute>(inherit: false).Any())
{
if ((Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType).IsEnum())
{
TrackClosure(property.PropertyType);
var local = property;
AddTypeResolver(() => ResolveEnumTypeProperty(structuralType, local));
}
else
{
newMember = LoadScalarProperty(structuralType.ClrType, property, out isEntityKeyProperty);
}
}
else if (property.GetCustomAttributes <EdmComplexPropertyAttribute>(inherit: false).Any())
{
TrackClosure(property.PropertyType);
// keep loop var from being lifted
var 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)
{
// 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.
var relationshipPropertyAttributes = propertyInfo.GetCustomAttributes <EdmRelationshipNavigationPropertyAttribute>(inherit: false);
Debug.Assert(relationshipPropertyAttributes.Count() == 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(
Strings.Validator_OSpace_InvalidNavPropReturnType(
propertyInfo.Name, propertyInfo.DeclaringType.FullName, propertyInfo.PropertyType.FullName)));
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
var attribute = (EdmRelationshipNavigationPropertyAttribute)relationshipPropertyAttributes.First();
EdmMember member = null;
EdmType type;
if (SessionData.TypesInLoading.TryGetValue(attribute.RelationshipNamespaceName + "." + attribute.RelationshipName, out type)
&&
Helper.IsAssociationType(type))
{
var relationshipType = (AssociationType)type;
if (relationshipType != null)
{
// The return value of this property has been verified, so create the property now
var navigationProperty = new NavigationProperty(propertyInfo.Name, TypeUsage.Create(propertyType));
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(
Strings.TargetRoleNameInNavigationPropertyNotValid(
propertyInfo.Name, propertyInfo.DeclaringType.FullName, attribute.TargetRoleName,
attribute.RelationshipName)));
member = null;
}
if (member != null
&&
((RefType)navigationProperty.FromEndMember.TypeUsage.EdmType).ElementType.ClrType != declaringType.ClrType)
{
SessionData.EdmItemErrors.Add(
new EdmItemError(
Strings.NavigationPropertyRelationshipEndTypeMismatch(
declaringType.FullName,
navigationProperty.Name,
relationshipType.FullName,
navigationProperty.FromEndMember.Name,
((RefType)navigationProperty.FromEndMember.TypeUsage.EdmType).ElementType.ClrType)));
member = null;
}
}
}
else
{
SessionData.EdmItemErrors.Add(
new EdmItemError(
Strings.RelationshipNameInNavigationPropertyNotValid(
propertyInfo.Name, propertyInfo.DeclaringType.FullName, attribute.RelationshipName)));
}
if (member != null)
{
declaringType.AddMember(member);
}
}
/// <summary>
/// Validates a EdmMember object to determine if it can be added to this type's
/// Members collection. If this method returns without throwing, it is assumed
/// the member is valid.
/// </summary>
/// <param name="member"> The member to validate </param>
/// <exception cref="System.ArgumentException">Thrown if the member is not a EdmProperty</exception>
internal override void ValidateMemberForAdd(EdmMember member)
{
Debug.Assert(
Helper.IsEdmProperty(member),
"Only members of type Property may be added to ComplexType.");
}
// <summary>
// Given the type in the target space and the member name in the source space,
// get the corresponding member in the target space
// For e.g. consider a Conceptual Type Abc with a member def and a CLR type
// XAbc with a member YDef. If one has a reference to Abc one can
// invoke GetMember(Abc,"YDef") to retrieve the member metadata for def
// </summary>
// <param name="type"> The type in the target perspective </param>
// <param name="memberName"> the name of the member in the source perspective </param>
// <param name="ignoreCase"> true for case-insensitive lookup </param>
// <param name="outMember"> returns the edmMember if a match is found </param>
// <returns> true if a match is found, otherwise false </returns>
internal override bool TryGetMember(StructuralType type, String memberName, bool ignoreCase, out EdmMember outMember)
{
outMember = null;
MappingBase map = null;
if (MetadataWorkspace.TryGetMap(type, DataSpace.OCSpace, out map))
{
var objectTypeMap = map as ObjectTypeMapping;
if (objectTypeMap != null)
{
var objPropertyMapping = objectTypeMap.GetMemberMapForClrMember(memberName, ignoreCase);
if (null != objPropertyMapping)
{
outMember = objPropertyMapping.EdmMember;
return(true);
}
}
}
return(false);
}
/// <summary>
/// Validates a EdmMember object to determine if it can be added to this type's
/// Members collection. If this method returns without throwing, it is assumed
/// the member is valid.
/// </summary>
/// <param name="member"> The member to validate </param>
/// <exception cref="System.ArgumentException">Thrown if the member is not a EdmProperty</exception>
internal override void ValidateMemberForAdd(EdmMember member)
{
Debug.Assert(
Helper.IsEdmProperty(member) || Helper.IsNavigationProperty(member),
"Only members of type Property may be added to Entity types.");
}
/// <summary>
/// Returns the slot index for the following member path: <paramref name="member" />.<paramref name="child" />, e.g., CPerson1.pid
/// </summary>
private int GetSlotIndex(MemberPath member, EdmMember child)
{
var fullMember = new MemberPath(member, child);
var index = m_projectedSlotMap.IndexOf(fullMember);
Debug.Assert(index != -1, "Couldn't locate " + fullMember + " in m_projectedSlotMap");
return index;
}
internal static bool IsNavigationProperty(EdmMember member)
{
return(BuiltInTypeKind.NavigationProperty == member.BuiltInTypeKind);
}
private static void ValidateMembersMatch(EdmMember edmMember, EdmMember objectMember)
{
Debug.Assert(edmMember.DeclaringType.DataSpace == DataSpace.CSpace, "the cspace member is not on a cspace type");
Debug.Assert(objectMember.DeclaringType.DataSpace == DataSpace.OSpace, "the ospace member is not on a cspace type");
// Make sure the property type is the same
if (edmMember.BuiltInTypeKind
!= objectMember.BuiltInTypeKind)
{
throw new MappingException(
Strings.Mapping_Default_OCMapping_MemberKind_Mismatch(
edmMember.Name, edmMember.DeclaringType.FullName, edmMember.BuiltInTypeKind,
objectMember.Name, objectMember.DeclaringType.FullName, objectMember.BuiltInTypeKind));
}
// Make sure the member type is the same
if (edmMember.TypeUsage.EdmType.BuiltInTypeKind
!= objectMember.TypeUsage.EdmType.BuiltInTypeKind)
{
throw Error.Mapping_Default_OCMapping_Member_Type_Mismatch(
edmMember.TypeUsage.EdmType.Name, edmMember.TypeUsage.EdmType.BuiltInTypeKind, edmMember.Name,
edmMember.DeclaringType.FullName,
objectMember.TypeUsage.EdmType.Name, objectMember.TypeUsage.EdmType.BuiltInTypeKind, objectMember.Name,
objectMember.DeclaringType.FullName);
}
if (Helper.IsPrimitiveType(edmMember.TypeUsage.EdmType))
{
var memberType = Helper.GetSpatialNormalizedPrimitiveType(edmMember.TypeUsage.EdmType);
// We expect the CLR prmitive type and their corresponding EDM primitive types to have the same primitive type kind (at least for now)
if (memberType.PrimitiveTypeKind
!= ((PrimitiveType)objectMember.TypeUsage.EdmType).PrimitiveTypeKind)
{
throw new MappingException(
Strings.Mapping_Default_OCMapping_Invalid_MemberType(
edmMember.TypeUsage.EdmType.FullName, edmMember.Name, edmMember.DeclaringType.FullName,
objectMember.TypeUsage.EdmType.FullName, objectMember.Name, objectMember.DeclaringType.FullName));
}
}
else if (Helper.IsEnumType(edmMember.TypeUsage.EdmType))
{
Debug.Assert(
Helper.IsEnumType(objectMember.TypeUsage.EdmType),
"Both types are expected to by EnumTypes. For non-matching types we should have already thrown.");
ValidateEnumTypeMapping((EnumType)edmMember.TypeUsage.EdmType, (EnumType)objectMember.TypeUsage.EdmType);
}
else
{
EdmType edmMemberType;
EdmType objectMemberType;
if (BuiltInTypeKind.AssociationEndMember
== edmMember.BuiltInTypeKind)
{
edmMemberType = ((RefType)edmMember.TypeUsage.EdmType).ElementType;
objectMemberType = ((RefType)objectMember.TypeUsage.EdmType).ElementType;
}
else if (BuiltInTypeKind.NavigationProperty == edmMember.BuiltInTypeKind
&&
Helper.IsCollectionType(edmMember.TypeUsage.EdmType))
{
edmMemberType = ((CollectionType)edmMember.TypeUsage.EdmType).TypeUsage.EdmType;
objectMemberType = ((CollectionType)objectMember.TypeUsage.EdmType).TypeUsage.EdmType;
}
else
{
edmMemberType = edmMember.TypeUsage.EdmType;
objectMemberType = objectMember.TypeUsage.EdmType;
}
if (edmMemberType.Identity
!= ObjectItemCollection.TryGetMappingCSpaceTypeIdentity(objectMemberType))
{
throw new MappingException(
Strings.Mapping_Default_OCMapping_Invalid_MemberType(
edmMember.TypeUsage.EdmType.FullName, edmMember.Name, edmMember.DeclaringType.FullName,
objectMember.TypeUsage.EdmType.FullName, objectMember.Name, objectMember.DeclaringType.FullName));
}
}
}
internal static bool IsAssociationEndMember(EdmMember member)
{
return(BuiltInTypeKind.AssociationEndMember == member.BuiltInTypeKind);
}
// <summary>
// Create a nested property ref for a simple property. Delegates to the function
// above
// </summary>
// <param name="p"> the simple property </param>
// <returns> a nestedPropertyRef </returns>
internal PropertyRef CreateNestedPropertyRef(md.EdmMember p)
{
return(CreateNestedPropertyRef(new SimplePropertyRef(p)));
}
internal static bool IsEdmProperty(EdmMember member)
{
return(BuiltInTypeKind.EdmProperty == member.BuiltInTypeKind);
}
private static bool MemberMatchesByConvention(PropertyInfo clrProperty, EdmMember cspaceMember)
{
return clrProperty.Name == cspaceMember.Name;
}
/// <summary>
/// Constrcut a new member mapping metadata object
/// </summary>
/// <param name="edmMember"></param>
/// <param name="clrMember"></param>
protected ObjectMemberMapping(EdmMember edmMember, EdmMember clrMember)
{
Debug.Assert(edmMember.BuiltInTypeKind == clrMember.BuiltInTypeKind, "BuiltInTypeKind must be the same");
m_edmMember = edmMember;
m_clrMember = clrMember;
}
private static bool NonPrimitiveMemberMatchesByConvention(PropertyInfo clrProperty, EdmMember cspaceMember)
{
return(!clrProperty.PropertyType.IsValueType() && !clrProperty.PropertyType.IsAssignableFrom(typeof(string)) &&
clrProperty.Name == cspaceMember.Name);
}
// <summary>
// Validates a EdmMember object to determine if it can be added to this type's
// Members collection. If this method returns without throwing, it is assumed
// the member is valid.
// </summary>
// <param name="member"> The member to validate </param>
// <exception cref="System.ArgumentException">Thrown if the member is not a EdmProperty</exception>
internal override void ValidateMemberForAdd(EdmMember member)
{
Debug.Assert(Helper.IsEdmProperty(member), "Only members of type Property may be added to Row types.");
}
protected virtual void Visit(EdmMember edmMember)
{
Visit(edmMember.TypeUsage);
}
internal abstract void ValidateMemberForAdd(EdmMember member);
private static bool MemberMatchesByConvention(PropertyInfo clrProperty, EdmMember cspaceMember)
{
return(clrProperty.Name == cspaceMember.Name);
}
internal virtual bool HasMember(EdmMember member)
{
DebugCheck.NotNull(member);
return(_members.Contains(member));
}
private static string GetType(EdmMember edmMember)
{
var primitiveType = edmMember.TypeUsage.EdmType as PrimitiveType;
string type = primitiveType != null && primitiveType.ClrEquivalentType != null
? primitiveType.ClrEquivalentType.FullName
: edmMember.TypeUsage.EdmType.FullName;
return type;
}
// <summary>
// Validates a EdmMember object to determine if it can be added to this type's
// Members collection. If this method returns without throwing, it is assumed
// the member is valid.
// </summary>
// <param name="member"> The member to validate </param>
// <exception cref="System.ArgumentException">Thrown if the member is not an AssociationEndMember</exception>
internal override void ValidateMemberForAdd(EdmMember member)
{
Debug.Assert(
(member is AssociationEndMember),
"Only members of type AssociationEndMember may be added to Association definitions.");
}
internal static string GetVariableType(SqlGenerator sqlGenerator, EdmMember column)
{
DebugCheck.NotNull(sqlGenerator);
DebugCheck.NotNull(column);
var columnType
= SqlGenerator.GenerateSqlForStoreType(sqlGenerator.SqlVersion, column.TypeUsage);
if (columnType == "rowversion"
|| columnType == "timestamp")
{
// rowversion and timestamp are intrinsically read-only. use binary to gather server generated
// values for these types.
columnType = "binary(8)";
}
return columnType;
}
/// <summary>
/// Given default values for children members, produces a new default expression for the requested (parent) member.
/// </summary>
/// <param name="node"> Parent member </param>
/// <returns> Default value for parent member </returns>
internal PropagatorResult Visit(EdmMember node)
{
PropagatorResult result;
var nodeType = Helper.GetModelTypeUsage(node);
if (Helper.IsScalarType(nodeType.EdmType))
{
GetPropagatorResultForPrimitiveType(Helper.AsPrimitive(nodeType.EdmType), out result);
}
else
{
// Construct a new 'complex type' (really any structural type) member.
var structuralType = (StructuralType)nodeType.EdmType;
var members = TypeHelpers.GetAllStructuralMembers(structuralType);
var args = new PropagatorResult[members.Count];
for (var ordinal = 0; ordinal < members.Count; ordinal++)
// foreach (EdmMember member in members)
{
args[ordinal] = Visit(members[ordinal]);
}
result = PropagatorResult.CreateStructuralValue(args, structuralType, false);
}
return result;
}
public bool EmitMember(
TypeBuilder typeBuilder, EdmMember member, PropertyBuilder propertyBuilder, PropertyInfo baseProperty,
BaseProxyImplementor baseImplementor)
{
if (_members.Contains(member))
{
var baseGetter = baseProperty.GetGetMethod(true);
const MethodAttributes getterAttributes =
MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.Virtual;
var getterAccess = baseGetter.Attributes & MethodAttributes.MemberAccessMask;
// Define field to store interceptor Func
// Signature of interceptor Func delegate is as follows:
//
// bool intercept(ProxyType proxy, PropertyType propertyValue)
//
// where
// PropertyType is the type of the Property, such as ICollection<Customer>,
// ProxyType is the type of the proxy object,
// propertyValue is the value returned from the proxied type's property getter.
var interceptorType = typeof(Func<,,>).MakeGenericType(typeBuilder, baseProperty.PropertyType, typeof(bool));
var interceptorInvoke = TypeBuilder.GetMethod(interceptorType, typeof(Func<,,>).GetMethod("Invoke"));
var interceptorField = typeBuilder.DefineField(
GetInterceptorFieldName(baseProperty.Name), interceptorType, FieldAttributes.Private | FieldAttributes.Static);
// Define a property getter override in the proxy type
var getterBuilder = typeBuilder.DefineMethod(
"get_" + baseProperty.Name, getterAccess | getterAttributes, baseProperty.PropertyType, Type.EmptyTypes);
var generator = getterBuilder.GetILGenerator();
// Emit instructions for the following call:
// T value = base.SomeProperty;
// if(this._interceptorForSomeProperty(this, value))
// { return value; }
// return base.SomeProperty;
// where _interceptorForSomeProperty represents the interceptor Func field.
var lableTrue = generator.DefineLabel();
generator.DeclareLocal(baseProperty.PropertyType); // T value
generator.Emit(OpCodes.Ldarg_0); // call base.SomeProperty
generator.Emit(OpCodes.Call, baseGetter); // call to base property getter
generator.Emit(OpCodes.Stloc_0); // value = result
generator.Emit(OpCodes.Ldarg_0); // load this
generator.Emit(OpCodes.Ldfld, interceptorField); // load this._interceptor
generator.Emit(OpCodes.Ldarg_0); // load this
generator.Emit(OpCodes.Ldloc_0); // load value
generator.Emit(OpCodes.Callvirt, interceptorInvoke); // call to interceptor delegate with (this, value)
generator.Emit(OpCodes.Brtrue_S, lableTrue); // if true, just return
generator.Emit(OpCodes.Ldarg_0); // else, call the base propertty getter again
generator.Emit(OpCodes.Call, baseGetter); // call to base property getter
generator.Emit(OpCodes.Ret);
generator.MarkLabel(lableTrue);
generator.Emit(OpCodes.Ldloc_0);
generator.Emit(OpCodes.Ret);
propertyBuilder.SetGetMethod(getterBuilder);
baseImplementor.AddBasePropertyGetter(baseProperty);
return true;
}
return false;
}
private static PrimitiveType ThrowGetStorePrimitiveType(
Dictionary<string, PrimitiveType> storeNameToPrimitive, string typeName, EdmMember edmMember)
{
PrimitiveType storePrimitiveType;
if (false == storeNameToPrimitive.TryGetValue(typeName, out storePrimitiveType))
{
throw new NotSupportedException(
String.Format(
CultureInfo.CurrentCulture, Resources.ErrorIncompatibleTypeForProvider, edmMember.TypeUsage.EdmType.Name,
edmMember.Name));
}
return storePrimitiveType;
}
/// <summary>
/// Tries and get the mapping ospace member for the given edmMember and the ospace type
/// </summary>
/// <param name="edmMember"></param>
/// <param name="objectType"></param>
/// <returns></returns
private static EdmMember GetObjectMember(EdmMember edmMember, StructuralType objectType)
{
// Assuming that we will have a single member in O-space for a member in C space
EdmMember objectMember;
if (!objectType.Members.TryGetValue(edmMember.Name, false /*ignoreCase*/, out objectMember))
{
throw new MappingException(
Strings.Mapping_Default_OCMapping_Clr_Member(
edmMember.Name, edmMember.DeclaringType.FullName, objectType.FullName));
}
return objectMember;
}
internal override void ValidateMemberForAdd(EdmMember member)
{
}
/// <summary>
/// Returns a placeholder for a specific metadata member.
/// </summary>
/// <param name="member"> EdmMember for which to produce a placeholder. </param>
/// <returns> Placeholder element for the given member. </returns>
private PropagatorResult CreateMemberPlaceholder(EdmMember member)
{
DebugCheck.NotNull(member);
return Visit(member);
}
internal virtual bool HasMember(EdmMember member)
{
return(this._members.Contains(member));
}
// Generates T-SQL describing a member
// Requires: member must belong to an entity type (a safe requirement for DML
// SQL gen, where we only access table columns)
internal static string GenerateMemberTSql(EdmMember member)
{
return SqlGenerator.QuoteIdentifier(member.Name);
}
/// <summary>
/// Returns a model (C-Space) typeusage for the given member typeusage. if the type is already in c-space, it returns
/// the given typeusage. The typeUsage returned is created by invoking the provider service to map from provider
/// specific type to model type.
/// </summary>
/// <param name="member"> EdmMember </param>
/// <returns> the respective Model (C-Space) typeusage </returns>
internal static TypeUsage GetModelTypeUsage(EdmMember member)
{
return(GetModelTypeUsage(member.TypeUsage));
}
