/// <summary>
/// Returns the association information for the specified navigation property.
/// </summary>
/// <param name="navigationProperty">The navigation property to return association information for</param>
/// <returns>The association info</returns>
internal AssociationInfo GetAssociationInfo(NavigationProperty navigationProperty)
{
return _associationMap.GetOrAdd(navigationProperty.RelationshipType.FullName, associationName =>
{
AssociationType associationType = (AssociationType)navigationProperty.RelationshipType;
if (!associationType.ReferentialConstraints.Any())
{
// We only support EF models where FK info is part of the model.
throw Error.NotSupported(Resource.LinqToEntitiesProvider_UnableToRetrieveAssociationInfo, associationName);
}
string toRoleName = associationType.ReferentialConstraints[0].ToRole.Name;
AssociationInfo associationInfo = new AssociationInfo()
{
FKRole = toRoleName,
Name = GetAssociationName(navigationProperty, toRoleName),
ThisKey = associationType.ReferentialConstraints[0].ToProperties.Select(p => p.Name).ToArray(),
OtherKey = associationType.ReferentialConstraints[0].FromProperties.Select(p => p.Name).ToArray(),
IsRequired = associationType.RelationshipEndMembers[0].RelationshipMultiplicity == RelationshipMultiplicity.One
};
return associationInfo;
});
}
public void Can_get_and_set_configuration_facet()
{
var navigationProperty = new NavigationProperty("N", TypeUsage.Create(new EntityType("E", "N", DataSpace.CSpace)));
navigationProperty.SetConfiguration(42);
Assert.Equal(42, navigationProperty.GetConfiguration());
}
public void Apply_is_noop_when_existing_constraint()
{
var associationType = new AssociationType("A", XmlConstants.ModelNamespace_3, false, DataSpace.CSpace);
associationType.SourceEnd = new AssociationEndMember("S", new EntityType("E", "N", DataSpace.CSpace));
associationType.TargetEnd = new AssociationEndMember("T", new EntityType("E", "N", DataSpace.CSpace));
var property = EdmProperty.Primitive("Fk", PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String));
var associationConstraint
= new ReferentialConstraint(
associationType.SourceEnd,
associationType.TargetEnd,
new[] { property },
new[] { property });
associationType.Constraint = associationConstraint;
var navigationProperty = new NavigationProperty("N", TypeUsage.Create(new EntityType("E", "N", DataSpace.CSpace)))
{
RelationshipType = associationType
};
((IEdmConvention<NavigationProperty>)new ForeignKeyNavigationPropertyAttributeConvention())
.Apply(navigationProperty, new EdmModel(DataSpace.CSpace));
Assert.Same(associationConstraint, navigationProperty.Association.Constraint);
}
public IEnumerable<IFilterAttribute> AttributesFor(NavigationProperty property)
{
return withCache(new Signature(property), () =>
{
var info = mapper.Map(property);
return info.GetAttributes<IFilterAttribute>();
});
}
internal void WriteNavigationPropertyElementHeader(NavigationProperty member)
{
_xmlWriter.WriteStartElement(XmlConstants.NavigationProperty);
_xmlWriter.WriteAttributeString(XmlConstants.Name, member.Name);
_xmlWriter.WriteAttributeString(
XmlConstants.Relationship,
GetQualifiedTypeName(XmlConstants.Self, member.Association.Name));
_xmlWriter.WriteAttributeString(XmlConstants.FromRole, member.GetFromEnd().Name);
_xmlWriter.WriteAttributeString(XmlConstants.ToRole, member.ToEndMember.Name);
}
internal void ResolveNavigationProperty(StructuralType declaringType, PropertyInfo propertyInfo)
{
IEnumerable <EdmRelationshipNavigationPropertyAttribute> customAttributes = propertyInfo.GetCustomAttributes <EdmRelationshipNavigationPropertyAttribute>(false);
EdmType edmType;
if (!this.TryGetLoadedType(propertyInfo.PropertyType, out edmType) || edmType.BuiltInTypeKind != BuiltInTypeKind.EntityType && edmType.BuiltInTypeKind != BuiltInTypeKind.CollectionType)
{
this.SessionData.EdmItemErrors.Add(new EdmItemError(Strings.Validator_OSpace_InvalidNavPropReturnType((object)propertyInfo.Name, (object)propertyInfo.DeclaringType.FullName, (object)propertyInfo.PropertyType.FullName)));
}
else
{
EdmRelationshipNavigationPropertyAttribute propertyAttribute = customAttributes.First <EdmRelationshipNavigationPropertyAttribute>();
EdmMember member = (EdmMember)null;
EdmType type;
if (this.SessionData.TypesInLoading.TryGetValue(propertyAttribute.RelationshipNamespaceName + "." + propertyAttribute.RelationshipName, out type) && Helper.IsAssociationType(type))
{
AssociationType associationType = (AssociationType)type;
if (associationType != null)
{
NavigationProperty navigationProperty = new NavigationProperty(propertyInfo.Name, TypeUsage.Create(edmType));
navigationProperty.RelationshipType = (RelationshipType)associationType;
member = (EdmMember)navigationProperty;
if (associationType.Members[0].Name == propertyAttribute.TargetRoleName)
{
navigationProperty.ToEndMember = (RelationshipEndMember)associationType.Members[0];
navigationProperty.FromEndMember = (RelationshipEndMember)associationType.Members[1];
}
else if (associationType.Members[1].Name == propertyAttribute.TargetRoleName)
{
navigationProperty.ToEndMember = (RelationshipEndMember)associationType.Members[1];
navigationProperty.FromEndMember = (RelationshipEndMember)associationType.Members[0];
}
else
{
this.SessionData.EdmItemErrors.Add(new EdmItemError(Strings.TargetRoleNameInNavigationPropertyNotValid((object)propertyInfo.Name, (object)propertyInfo.DeclaringType.FullName, (object)propertyAttribute.TargetRoleName, (object)propertyAttribute.RelationshipName)));
member = (EdmMember)null;
}
if (member != null && ((RefType)navigationProperty.FromEndMember.TypeUsage.EdmType).ElementType.ClrType != declaringType.ClrType)
{
this.SessionData.EdmItemErrors.Add(new EdmItemError(Strings.NavigationPropertyRelationshipEndTypeMismatch((object)declaringType.FullName, (object)navigationProperty.Name, (object)associationType.FullName, (object)navigationProperty.FromEndMember.Name, (object)((RefType)navigationProperty.FromEndMember.TypeUsage.EdmType).ElementType.ClrType)));
member = (EdmMember)null;
}
}
}
else
{
this.SessionData.EdmItemErrors.Add(new EdmItemError(Strings.RelationshipNameInNavigationPropertyNotValid((object)propertyInfo.Name, (object)propertyInfo.DeclaringType.FullName, (object)propertyAttribute.RelationshipName)));
}
if (member == null)
{
return;
}
declaringType.AddMember(member);
}
}
public void Apply_is_noop_when_no_fk_annotation()
{
var navigationProperty = new NavigationProperty("N", TypeUsage.Create(new EntityType("E", "N", DataSpace.CSpace)))
{
RelationshipType = new AssociationType("A", XmlConstants.ModelNamespace_3, false, DataSpace.CSpace)
};
((IEdmConvention<NavigationProperty>)new ForeignKeyNavigationPropertyAttributeConvention())
.Apply(navigationProperty, new EdmModel(DataSpace.CSpace));
Assert.Null(navigationProperty.Association.Constraint);
}
public void Configure_should_set_configuration_annotations()
{
var navigationPropertyConfiguration = new NavigationPropertyConfiguration(new MockPropertyInfo());
var navigationProperty = new NavigationProperty("N", TypeUsage.Create(new EntityType()))
{
RelationshipType = new AssociationType()
};
navigationProperty.Association.SourceEnd = new AssociationEndMember("S", new EntityType());
navigationProperty.Association.TargetEnd = new AssociationEndMember("T", new EntityType());
navigationPropertyConfiguration.Configure(navigationProperty, new EdmModel(), new EntityTypeConfiguration(typeof(object)));
Assert.NotNull(navigationProperty.GetConfiguration());
Assert.NotNull(navigationProperty.Association.GetConfiguration());
}
public void EdmNavigationProperty_BadNavigationPropertyBadFromRoleType()
{
var parentEntity = new EntityType("P", "N", DataSpace.CSpace);
var targetEntity = new EntityType("T", "N", DataSpace.CSpace);
var sourceEntity = new EntityType("S", "N", DataSpace.CSpace);
var associationType
= new AssociationType("A", XmlConstants.ModelNamespace_3, false, DataSpace.CSpace)
{
SourceEnd = new AssociationEndMember("S", sourceEntity),
TargetEnd = new AssociationEndMember("T", targetEntity)
};
var navigationProperty
= new NavigationProperty("N", TypeUsage.Create(targetEntity))
{
RelationshipType = associationType
};
parentEntity.AddMember(navigationProperty);
var model = new EdmModel(DataSpace.CSpace);
model.AddItem(parentEntity);
var validationContext
= new EdmModelValidationContext(model, true);
DataModelErrorEventArgs errorEventArgs = null;
validationContext.OnError += (_, e) => errorEventArgs = e;
EdmModelSemanticValidationRules
.EdmNavigationProperty_BadNavigationPropertyBadFromRoleType
.Evaluate(validationContext, navigationProperty);
Assert.NotNull(errorEventArgs);
Assert.Same(navigationProperty, errorEventArgs.Item);
Assert.Equal(
Strings.BadNavigationPropertyBadFromRoleType(
navigationProperty.Name,
sourceEntity.Name,
navigationProperty.GetFromEnd().Name,
navigationProperty.Association.Name,
parentEntity.Name),
errorEventArgs.ErrorMessage);
}
/// <summary>
/// Creates a NavigationProperty instance from the specified parameters.
/// </summary>
/// <param name="name">The name of the navigation property.</param>
/// <param name="typeUsage">Specifies the navigation property type and its facets.</param>
/// <param name="relationshipType">The relationship type for the navigation.</param>
/// <param name="from">The source end member in the navigation.</param>
/// <param name="to">The target end member in the navigation.</param>
/// <returns>The newly created NavigationProperty instance.</returns>
public static NavigationProperty Create(
string name,
TypeUsage typeUsage,
RelationshipType relationshipType,
RelationshipEndMember from,
RelationshipEndMember to)
{
var instance = new NavigationProperty(name, typeUsage);
instance.RelationshipType = relationshipType;
instance.FromEndMember = from;
instance.ToEndMember = to;
instance.SetReadOnly();
return(instance);
}
public IFluentConfiguration Discover(NavigationProperty navigationProperty, DbModel model)
{
Debug.Assert(navigationProperty != null, "navigationProperty is null.");
Debug.Assert(model != null, "model is null.");
var associationType = (AssociationType)navigationProperty.RelationshipType;
if (!associationType.IsForeignKey
|| (navigationProperty.ToEndMember.RelationshipMultiplicity != RelationshipMultiplicity.Many
&& navigationProperty.FromEndMember.RelationshipMultiplicity != RelationshipMultiplicity.Many))
{
// Doesn't apply
return null;
}
var constraint = associationType.Constraint;
var entityType = (EntityType)navigationProperty.DeclaringType;
var fromProperty = constraint.FromProperties.First();
var fromPropertyName = fromProperty.Name;
var toEntityType = navigationProperty.ToEndMember.GetEntityType();
// NOTE: OrderBy works around a bug in primary key column ordering (Work Item 868)
var toProperties = constraint.ToProperties.OrderBy(
p => entityType.KeyMembers.IndexOf(constraint.FromProperties[constraint.ToProperties.IndexOf(p)]));
var toPropertyName = toProperties.First().Name;
if (!toProperties.MoreThan(1)
&& (toPropertyName.EqualsIgnoreCase(navigationProperty.Name + fromPropertyName)
|| (!entityType.NavigationProperties.Where(p => p.ToEndMember.GetEntityType() == toEntityType)
.MoreThan(1)
&& (toPropertyName.EqualsIgnoreCase(fromPropertyName)
|| toPropertyName.EqualsIgnoreCase(fromProperty.DeclaringType.Name + fromPropertyName)))))
{
// By convention
return null;
}
var configuration = new ForeignKeyConfiguration();
foreach (var property in toProperties)
{
configuration.Properties.Add(property);
}
return configuration;
}
internal bool TryGetNavigationProperty(
string relationshipType,
string fromName,
string toName,
out NavigationProperty navigationProperty)
{
foreach (NavigationProperty navigationProperty1 in this.NavigationProperties)
{
if (navigationProperty1.RelationshipType.FullName == relationshipType && navigationProperty1.FromEndMember.Name == fromName && navigationProperty1.ToEndMember.Name == toName)
{
navigationProperty = navigationProperty1;
return(true);
}
}
navigationProperty = (NavigationProperty)null;
return(false);
}
public void EdmNavigationProperty_BadNavigationPropertyBadFromRoleType()
{
var parentEntity = new EntityType("P", "N", DataSpace.CSpace);
var targetEntity = new EntityType("T", "N", DataSpace.CSpace);
var sourceEntity = new EntityType("S", "N", DataSpace.CSpace);
var associationType
= new AssociationType("A", XmlConstants.ModelNamespace_3, false, DataSpace.CSpace)
{
SourceEnd = new AssociationEndMember("S", sourceEntity),
TargetEnd = new AssociationEndMember("T", targetEntity)
};
var navigationProperty
= new NavigationProperty("N", TypeUsage.Create(targetEntity))
{
RelationshipType = associationType
};
parentEntity.AddMember(navigationProperty);
var model = new EdmModel(DataSpace.CSpace);
model.AddItem(parentEntity);
var validationContext
= new EdmModelValidationContext(model, true);
DataModelErrorEventArgs errorEventArgs = null;
validationContext.OnError += (_, e) => errorEventArgs = e;
EdmModelSemanticValidationRules
.EdmNavigationProperty_BadNavigationPropertyBadFromRoleType
.Evaluate(validationContext, navigationProperty);
Assert.NotNull(errorEventArgs);
Assert.Same(navigationProperty, errorEventArgs.Item);
Assert.Equal(
Strings.BadNavigationPropertyBadFromRoleType(
navigationProperty.Name,
sourceEntity.Name,
navigationProperty.GetFromEnd().Name,
navigationProperty.Association.Name,
parentEntity.Name),
errorEventArgs.ErrorMessage);
}
public void Configure_should_set_configuration_annotations()
{
var navigationPropertyConfiguration = new NavigationPropertyConfiguration(new MockPropertyInfo(typeof(AType1), "N"));
var navigationProperty = new NavigationProperty("N", TypeUsage.Create(new EntityType("E", "N", DataSpace.CSpace)))
{
RelationshipType = new AssociationType("A", XmlConstants.ModelNamespace_3, false, DataSpace.CSpace)
};
navigationProperty.Association.SourceEnd = new AssociationEndMember("S", new EntityType("E", "N", DataSpace.CSpace));
navigationProperty.Association.TargetEnd = new AssociationEndMember("T", new EntityType("E", "N", DataSpace.CSpace));
navigationPropertyConfiguration.Configure(
navigationProperty, new EdmModel(DataSpace.CSpace), new EntityTypeConfiguration(typeof(object)));
Assert.NotNull(navigationProperty.GetConfiguration());
Assert.NotNull(navigationProperty.Association.GetConfiguration());
}
public void Apply_is_noop_when_unknown_dependent()
{
var model = new EdmModel(DataSpace.CSpace);
var associationType = new AssociationType("A", XmlConstants.ModelNamespace_3, false, DataSpace.CSpace);
associationType.SourceEnd = new AssociationEndMember("S", new EntityType("E", "N", DataSpace.CSpace));
associationType.TargetEnd = new AssociationEndMember("T", new EntityType("E", "N", DataSpace.CSpace));
var navigationProperty = new NavigationProperty("N", TypeUsage.Create(associationType.TargetEnd.GetEntityType()))
{
RelationshipType = associationType
};
var foreignKeyAnnotation = new ForeignKeyAttribute("AId");
navigationProperty.Annotations.SetClrAttributes(new[] { foreignKeyAnnotation });
((IEdmConvention<NavigationProperty>)new ForeignKeyNavigationPropertyAttributeConvention())
.Apply(navigationProperty, model);
Assert.Null(associationType.Constraint);
}
/// <summary>
/// Creates an AssociationAttribute for the specified navigation property
/// </summary>
/// <param name="navigationProperty">The navigation property that corresponds to the association (it identifies the end points)</param>
/// <returns>A new AssociationAttribute that describes the given navigation property association</returns>
internal AssociationAttribute CreateAssociationAttribute(NavigationProperty navigationProperty)
{
var assocInfo = GetAssociationInfo(navigationProperty);
var isForeignKey = navigationProperty.FromEndMember.Name == assocInfo.FKRole;
string thisKey;
string otherKey;
if (isForeignKey) {
thisKey = String.Join(",", assocInfo.ThisKey);
otherKey = String.Join(",", assocInfo.OtherKey);
}
else {
otherKey = String.Join(",", assocInfo.ThisKey);
thisKey = String.Join(",", assocInfo.OtherKey);
}
return new AssociationAttribute(assocInfo.Name, thisKey, otherKey) {
IsForeignKey = isForeignKey
};
}
private static NavigationProperty ConvertToNavigationProperty(
EntityType declaringEntityType,
System.Data.Entity.Core.SchemaObjectModel.NavigationProperty somNavigationProperty,
DbProviderManifest providerManifest,
Converter.ConversionCache convertedItemCache,
Dictionary <SchemaElement, GlobalItem> newGlobalItems)
{
EntityType endMemberType = (EntityType)Converter.LoadSchemaElement(somNavigationProperty.Type, providerManifest, convertedItemCache, newGlobalItems);
AssociationType associationType = (AssociationType)Converter.LoadSchemaElement((System.Data.Entity.Core.SchemaObjectModel.SchemaType)somNavigationProperty.Relationship, providerManifest, convertedItemCache, newGlobalItems);
IRelationshipEnd end = (IRelationshipEnd)null;
somNavigationProperty.Relationship.TryGetEnd(somNavigationProperty.ToEnd.Name, out end);
RelationshipMultiplicity?multiplicity1 = end.Multiplicity;
EdmType edmType = (multiplicity1.GetValueOrDefault() != RelationshipMultiplicity.Many ? 0 : (multiplicity1.HasValue ? 1 : 0)) == 0 ? (EdmType)endMemberType : (EdmType)endMemberType.GetCollectionType();
RelationshipMultiplicity?multiplicity2 = end.Multiplicity;
TypeUsage typeUsage;
if ((multiplicity2.GetValueOrDefault() != RelationshipMultiplicity.One ? 0 : (multiplicity2.HasValue ? 1 : 0)) != 0)
{
typeUsage = TypeUsage.Create(edmType, new FacetValues()
{
Nullable = (FacetValueContainer <bool?>) new bool?(false)
});
}
else
{
typeUsage = TypeUsage.Create(edmType);
}
Converter.InitializeAssociationEndMember(associationType, somNavigationProperty.ToEnd, endMemberType);
Converter.InitializeAssociationEndMember(associationType, somNavigationProperty.FromEnd, declaringEntityType);
NavigationProperty navigationProperty = new NavigationProperty(somNavigationProperty.Name, typeUsage);
navigationProperty.RelationshipType = (RelationshipType)associationType;
navigationProperty.ToEndMember = (RelationshipEndMember)associationType.Members[somNavigationProperty.ToEnd.Name];
navigationProperty.FromEndMember = (RelationshipEndMember)associationType.Members[somNavigationProperty.FromEnd.Name];
if (somNavigationProperty.Documentation != null)
{
navigationProperty.Documentation = Converter.ConvertToDocumentation(somNavigationProperty.Documentation);
}
Converter.AddOtherContent((SchemaElement)somNavigationProperty, (MetadataItem)navigationProperty);
return(navigationProperty);
}
public void Nullability_updated_when_property_goes_readonly()
{
var navigationProperty
= new NavigationProperty("N", TypeUsage.Create(new EntityType("E", "N", DataSpace.CSpace)))
{
ToEndMember =
new AssociationEndMember(
"T", new RefType(new EntityType("E", "N", DataSpace.CSpace)), RelationshipMultiplicity.ZeroOrOne)
};
Assert.Equal(true, navigationProperty.TypeUsage.Facets[EdmConstants.Nullable].Value);
navigationProperty.ToEndMember.RelationshipMultiplicity = RelationshipMultiplicity.One;
Assert.Equal(true, navigationProperty.TypeUsage.Facets[EdmConstants.Nullable].Value);
navigationProperty.SetReadOnly();
Assert.Equal(false, navigationProperty.TypeUsage.Facets[EdmConstants.Nullable].Value);
}
public void Nullability_updated_when_property_goes_readonly()
{
var navigationProperty
= new NavigationProperty("N", TypeUsage.Create(new EntityType("E", "N", DataSpace.CSpace)))
{
ToEndMember =
new AssociationEndMember(
"T", new RefType(new EntityType("E", "N", DataSpace.CSpace)), RelationshipMultiplicity.ZeroOrOne)
};
Assert.Equal(true, navigationProperty.TypeUsage.Facets[EdmConstants.Nullable].Value);
navigationProperty.ToEndMember.RelationshipMultiplicity = RelationshipMultiplicity.One;
Assert.Equal(true, navigationProperty.TypeUsage.Facets[EdmConstants.Nullable].Value);
navigationProperty.SetReadOnly();
Assert.Equal(false, navigationProperty.TypeUsage.Facets[EdmConstants.Nullable].Value);
}
private void ConfigureDependentBehavior(
AssociationType associationType,
EdmModel model,
EntityTypeConfiguration entityTypeConfiguration)
{
AssociationEndMember principalEnd;
AssociationEndMember dependentEnd;
if (!associationType.TryGuessPrincipalAndDependentEnds(out principalEnd, out dependentEnd))
{
if (this.IsNavigationPropertyDeclaringTypePrincipal.HasValue)
{
associationType.MarkPrincipalConfigured();
System.Data.Entity.Core.Metadata.Edm.NavigationProperty navigationProperty = model.EntityTypes.SelectMany <EntityType, System.Data.Entity.Core.Metadata.Edm.NavigationProperty>((Func <EntityType, IEnumerable <System.Data.Entity.Core.Metadata.Edm.NavigationProperty> >)(et => (IEnumerable <System.Data.Entity.Core.Metadata.Edm.NavigationProperty>)et.DeclaredNavigationProperties)).Single <System.Data.Entity.Core.Metadata.Edm.NavigationProperty>((Func <System.Data.Entity.Core.Metadata.Edm.NavigationProperty, bool>)(np =>
{
if (np.RelationshipType.Equals((object)associationType))
{
return(np.GetClrPropertyInfo().IsSameAs(this.NavigationProperty));
}
return(false);
}));
principalEnd = this.IsNavigationPropertyDeclaringTypePrincipal.Value ? associationType.GetOtherEnd(navigationProperty.ResultEnd) : navigationProperty.ResultEnd;
dependentEnd = associationType.GetOtherEnd(principalEnd);
if (associationType.SourceEnd != principalEnd)
{
associationType.SourceEnd = principalEnd;
associationType.TargetEnd = dependentEnd;
AssociationSet associationSet = model.Containers.SelectMany <EntityContainer, AssociationSet>((Func <EntityContainer, IEnumerable <AssociationSet> >)(ct => (IEnumerable <AssociationSet>)ct.AssociationSets)).Single <AssociationSet>((Func <AssociationSet, bool>)(aset => aset.ElementType == associationType));
EntitySet sourceSet = associationSet.SourceSet;
associationSet.SourceSet = associationSet.TargetSet;
associationSet.TargetSet = sourceSet;
}
}
if (principalEnd == null)
{
dependentEnd = associationType.TargetEnd;
}
}
this.ConfigureConstraint(associationType, dependentEnd, entityTypeConfiguration);
this.ConfigureDeleteAction(associationType.GetOtherEnd(dependentEnd));
}
// <summary>
// Attempts to get the property name for the association between the two given end
// names. Note that this property may not exist if a navigation property is defined
// in one direction but not in the other.
// </summary>
// <param name="relationshipType"> the relationship for which a nav property is required </param>
// <param name="fromName"> the 'from' end of the association </param>
// <param name="toName"> the 'to' end of the association </param>
// <param name="navigationProperty"> the property name, or null if none was found </param>
// <returns> true if a property was found, false otherwise </returns>
internal bool TryGetNavigationProperty(
string relationshipType, string fromName, string toName, out NavigationProperty navigationProperty)
{
// This is a linear search but it's probably okay because the number of entries
// is generally small and this method is only called to generate code during lightweight
// code gen.
foreach (var navProperty in NavigationProperties)
{
if (navProperty.RelationshipType.FullName == relationshipType
&&
navProperty.FromEndMember.Name == fromName
&&
navProperty.ToEndMember.Name == toName)
{
navigationProperty = navProperty;
return(true);
}
}
navigationProperty = null;
return(false);
}
internal void Configure(
System.Data.Entity.Core.Metadata.Edm.NavigationProperty navigationProperty,
EdmModel model,
EntityTypeConfiguration entityTypeConfiguration)
{
navigationProperty.SetConfiguration((object)this);
AssociationType association = navigationProperty.Association;
NavigationPropertyConfiguration configuration = association.GetConfiguration() as NavigationPropertyConfiguration;
if (configuration == null)
{
association.SetConfiguration((object)this);
}
else
{
this.EnsureConsistency(configuration);
}
this.ConfigureInverse(association, model);
this.ConfigureEndKinds(association, configuration);
this.ConfigureDependentBehavior(association, model, entityTypeConfiguration);
}
public static MultiplicityConfiguration Discover(NavigationProperty navigationProperty, out bool isDefault)
{
Debug.Assert(navigationProperty != null, "navigationProperty is null.");
var entityType = (EntityType)navigationProperty.DeclaringType;
var otherEntityType = navigationProperty.ToEndMember.GetEntityType();
var otherNavigationProperty = otherEntityType.NavigationProperties.First(
p => p.ToEndMember == navigationProperty.FromEndMember);
isDefault = (navigationProperty.FromEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many
|| otherNavigationProperty.FromEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many)
&& !entityType.NavigationProperties.Where(p => p.ToEndMember.GetEntityType() == otherEntityType)
.MoreThan(1);
return new MultiplicityConfiguration
{
LeftEntityType = entityType,
LeftNavigationProperty = navigationProperty,
RightNavigationProperty = otherNavigationProperty
};
}
public void Can_get_list_of_declared_navigation_properties()
{
var entityType = new EntityType("E", "N", DataSpace.CSpace);
Assert.Empty(entityType.DeclaredNavigationProperties);
var property = new NavigationProperty("N", TypeUsage.Create(new EntityType("E", "N", DataSpace.CSpace)));
entityType.AddMember(property);
Assert.Equal(1, entityType.DeclaredNavigationProperties.Count);
entityType.RemoveMember(property);
var baseType = new EntityType("E", "N", DataSpace.CSpace);
baseType.AddMember(property);
entityType.BaseType = baseType;
Assert.Empty(entityType.DeclaredNavigationProperties);
Assert.Equal(1, entityType.Members.Count);
}
public void NavigationProperties_is_thread_safe()
{
var entityType = new EntityType("E", "N", DataSpace.CSpace);
var property = new NavigationProperty("N", TypeUsage.Create(new EntityType("E", "N", DataSpace.CSpace)));
entityType.AddMember(property);
const int cycles = 100;
const int threadCount = 30;
Action readNavigationProperties = () =>
{
for (var i = 0; i < cycles; ++i)
{
var navProps = entityType.NavigationProperties;
//touching Members.Source triggers a reset to NavigationProperties
var sourceCount = entityType.Members.Source.Count;
Assert.True(sourceCount == 1);
var navigationPropertiesAfterReset = entityType.NavigationProperties;
Assert.True(navProps != null, "First reference to NavigationProperties should not be null");
Assert.True(navigationPropertiesAfterReset != null, "Second reference to NavigationProperties should not be null");
Assert.False(ReferenceEquals(navProps, navigationPropertiesAfterReset), "The NavigationProperties instances should be different");
}
};
var tasks = new List <Thread>();
for (var i = 0; i < threadCount; ++i)
{
tasks.Add(new Thread(new ThreadStart(readNavigationProperties)));
}
tasks.ForEach(t => t.Start());
tasks.ForEach(t => t.Join());
}
public static void Adding_a_NavigationProperty_to_an_EntityType_can_be_forced_when_read_only()
{
var typeUsage = TypeUsage.CreateDefaultTypeUsage(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String));
var associationType = new AssociationType("AssociationType", "Namespace", true, DataSpace.CSpace);
var source = new EntityType("Source", "Namespace", DataSpace.CSpace);
var target = new EntityType("Target", "Namespace", DataSpace.CSpace);
var sourceEnd = new AssociationEndMember("SourceEnd", source);
var targetEnd = new AssociationEndMember("TargetEnd", target);
var navigationProperty =
NavigationProperty.Create(
"NavigationProperty",
typeUsage,
associationType,
sourceEnd,
targetEnd,
null);
source.SetReadOnly();
Assert.True(source.IsReadOnly);
Assert.Equal(
Resources.Strings.OperationOnReadOnlyItem,
Assert.Throws <InvalidOperationException>(
() => source.AddMember(navigationProperty)).Message);
Assert.Equal(0, source.Members.Count);
source.AddNavigationProperty(navigationProperty);
Assert.True(source.IsReadOnly);
Assert.Equal(1, source.Members.Count);
Assert.Same(navigationProperty, source.Members[0]);
Assert.Equal(
Resources.Strings.OperationOnReadOnlyItem,
Assert.Throws <InvalidOperationException>(
() => source.AddMember(navigationProperty)).Message);
}
/// <summary>
/// Creates a NavigationProperty instance from the specified parameters.
/// </summary>
/// <param name="name">The name of the navigation property.</param>
/// <param name="typeUsage">Specifies the navigation property type and its facets.</param>
/// <param name="relationshipType">The relationship type for the navigation.</param>
/// <param name="from">The source end member in the navigation.</param>
/// <param name="to">The target end member in the navigation.</param>
/// <param name="metadataProperties">The metadata properties of the navigation property.</param>
/// <returns>The newly created NavigationProperty instance.</returns>
public static NavigationProperty Create(
string name,
TypeUsage typeUsage,
RelationshipType relationshipType,
RelationshipEndMember from,
RelationshipEndMember to,
IEnumerable <MetadataProperty> metadataProperties)
{
Check.NotEmpty(name, nameof(name));
Check.NotNull <TypeUsage>(typeUsage, nameof(typeUsage));
NavigationProperty navigationProperty = new NavigationProperty(name, typeUsage);
navigationProperty.RelationshipType = relationshipType;
navigationProperty.FromEndMember = from;
navigationProperty.ToEndMember = to;
if (metadataProperties != null)
{
navigationProperty.AddMetadataProperties(metadataProperties.ToList <MetadataProperty>());
}
navigationProperty.SetReadOnly();
return(navigationProperty);
}
public void Can_get_list_of_declared_navigation_properties()
{
var entityType = new EntityType();
Assert.Empty(entityType.DeclaredNavigationProperties);
var property = new NavigationProperty("N", TypeUsage.Create(new EntityType()));
entityType.AddMember(property);
Assert.Equal(1, entityType.DeclaredNavigationProperties.Count);
entityType.RemoveMember(property);
var baseType = new EntityType();
baseType.AddMember(property);
entityType.BaseType = baseType;
Assert.Empty(entityType.DeclaredNavigationProperties);
Assert.Equal(1, entityType.Members.Count);
}
private void ConfigureInverse(AssociationType associationType, EdmModel model)
{
if (this._inverseNavigationProperty == (PropertyInfo)null)
{
return;
}
System.Data.Entity.Core.Metadata.Edm.NavigationProperty navigationProperty = model.GetNavigationProperty(this._inverseNavigationProperty);
if (navigationProperty == null || navigationProperty.Association == associationType)
{
return;
}
associationType.SourceEnd.RelationshipMultiplicity = navigationProperty.Association.TargetEnd.RelationshipMultiplicity;
if (associationType.Constraint == null && this._constraint == null && navigationProperty.Association.Constraint != null)
{
associationType.Constraint = navigationProperty.Association.Constraint;
associationType.Constraint.FromRole = (RelationshipEndMember)associationType.SourceEnd;
associationType.Constraint.ToRole = (RelationshipEndMember)associationType.TargetEnd;
}
model.RemoveAssociationType(navigationProperty.Association);
navigationProperty.RelationshipType = (RelationshipType)associationType;
navigationProperty.FromEndMember = (RelationshipEndMember)associationType.TargetEnd;
navigationProperty.ToEndMember = (RelationshipEndMember)associationType.SourceEnd;
}
private bool TryFindNavigationProperties(
Type type,
StructuralType cspaceType,
StructuralType ospaceType,
IEnumerable <PropertyInfo> clrProperties,
List <Action> referenceResolutionListForCurrentType)
{
List <KeyValuePair <NavigationProperty, PropertyInfo> > keyValuePairList = new List <KeyValuePair <NavigationProperty, PropertyInfo> >();
foreach (NavigationProperty declaredOnlyMember in cspaceType.GetDeclaredOnlyMembers <NavigationProperty>())
{
NavigationProperty cspaceProperty = declaredOnlyMember;
PropertyInfo propertyInfo = clrProperties.FirstOrDefault <PropertyInfo>((Func <PropertyInfo, bool>)(p => OSpaceTypeFactory.NonPrimitiveMemberMatchesByConvention(p, (EdmMember)cspaceProperty)));
if (propertyInfo != (PropertyInfo)null)
{
bool flag = cspaceProperty.ToEndMember.RelationshipMultiplicity != RelationshipMultiplicity.Many;
if (propertyInfo.CanRead && (!flag || propertyInfo.CanWriteExtended()))
{
keyValuePairList.Add(new KeyValuePair <NavigationProperty, PropertyInfo>(cspaceProperty, propertyInfo));
}
}
else
{
this.LogLoadMessage(Strings.Validator_OSpace_Convention_MissingRequiredProperty((object)cspaceProperty.Name, (object)type.FullName), (EdmType)cspaceType);
return(false);
}
}
foreach (KeyValuePair <NavigationProperty, PropertyInfo> keyValuePair in keyValuePairList)
{
this.TrackClosure(keyValuePair.Value.PropertyType);
StructuralType ct = cspaceType;
StructuralType ot = ospaceType;
NavigationProperty cp = keyValuePair.Key;
referenceResolutionListForCurrentType.Add((Action)(() => this.CreateAndAddNavigationProperty(ct, ot, cp)));
}
return(true);
}
public IFluentConfiguration Discover(NavigationProperty navigationProperty, DbModel model)
{
Debug.Assert(navigationProperty != null, "navigationProperty is null.");
Debug.Assert(model != null, "model is null.");
var fromEndMember = navigationProperty.FromEndMember;
var toEndMember = navigationProperty.ToEndMember;
if (fromEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many
&& toEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many)
{
// Doesn't apply
return null;
}
var deleteBehavior = fromEndMember.RelationshipMultiplicity != RelationshipMultiplicity.Many
&& toEndMember.RelationshipMultiplicity != RelationshipMultiplicity.One
? fromEndMember.DeleteBehavior
: toEndMember.DeleteBehavior;
var defaultDeleteBehavior =
(((fromEndMember.RelationshipMultiplicity == RelationshipMultiplicity.One
&& toEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many)
|| (fromEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many
&& toEndMember.RelationshipMultiplicity == RelationshipMultiplicity.One))
&& fromEndMember.GetEntityType() != toEndMember.GetEntityType())
? OperationAction.Cascade
: OperationAction.None;
if (deleteBehavior == defaultDeleteBehavior)
{
// By convention
return null;
}
return new CascadeDeleteConfiguration { DeleteBehavior = deleteBehavior };
}
public static void Create_sets_properties_and_seals_the_instance()
{
var typeUsage = TypeUsage.CreateDefaultTypeUsage(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String));
var associationType = new AssociationType("AssociationType", "Namespace", true, DataSpace.CSpace);
var source = new EntityType("Source", "Namespace", DataSpace.CSpace);
var target = new EntityType("Target", "Namespace", DataSpace.CSpace);
var sourceEnd = new AssociationEndMember("SourceEnd", source);
var targetEnd = new AssociationEndMember("TargetEnd", target);
var navigationProperty =
NavigationProperty.Create(
"NavigationProperty",
typeUsage,
associationType,
sourceEnd,
targetEnd,
new[]
{
new MetadataProperty(
"TestProperty",
TypeUsage.CreateDefaultTypeUsage(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String)),
"value"),
});
Assert.Equal("NavigationProperty", navigationProperty.Name);
Assert.Same(typeUsage, navigationProperty.TypeUsage);
Assert.Same(associationType, navigationProperty.RelationshipType);
Assert.Same(sourceEnd, navigationProperty.FromEndMember);
Assert.Same(targetEnd, navigationProperty.ToEndMember);
Assert.True(navigationProperty.IsReadOnly);
var metadataProperty = navigationProperty.MetadataProperties.SingleOrDefault(p => p.Name == "TestProperty");
Assert.NotNull(metadataProperty);
Assert.Equal("value", metadataProperty.Value);
}
public static void Create_sets_properties_and_seals_the_instance()
{
var typeUsage = TypeUsage.CreateDefaultTypeUsage(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String));
var associationType = new AssociationType("AssociationType", "Namespace", true, DataSpace.CSpace);
var source = new EntityType("Source", "Namespace", DataSpace.CSpace);
var target = new EntityType("Target", "Namespace", DataSpace.CSpace);
var sourceEnd = new AssociationEndMember("SourceEnd", source);
var targetEnd = new AssociationEndMember("TargetEnd", target);
var navigationProperty =
NavigationProperty.Create(
"NavigationProperty",
typeUsage,
associationType,
sourceEnd,
targetEnd);
Assert.Equal("NavigationProperty", navigationProperty.Name);
Assert.Same(typeUsage, navigationProperty.TypeUsage);
Assert.Same(associationType, navigationProperty.RelationshipType);
Assert.Same(sourceEnd, navigationProperty.FromEndMember);
Assert.Same(targetEnd, navigationProperty.ToEndMember);
Assert.True(navigationProperty.IsReadOnly);
}
/// <summary>
/// Attempts to get the property name for the assoication between the two given end
/// names. Note that this property may not exist if a navigation property is defined
/// in one direction but not in the other.
/// </summary>
/// <param name="relationshipType"> the relationship for which a nav property is required </param>
/// <param name="fromName"> the 'from' end of the association </param>
/// <param name="toName"> the 'to' end of the association </param>
/// <param name="navigationProperty"> the property name, or null if none was found </param>
/// <returns> true if a property was found, false otherwise </returns>
internal bool TryGetNavigationProperty(
string relationshipType, string fromName, string toName, out NavigationProperty navigationProperty)
{
// This is a linear search but it's probably okay because the number of entries
// is generally small and this method is only called to generate code during lighweight
// code gen.
foreach (var navProperty in NavigationProperties)
{
if (navProperty.RelationshipType.FullName == relationshipType
&&
navProperty.FromEndMember.Name == fromName
&&
navProperty.ToEndMember.Name == toName)
{
navigationProperty = navProperty;
return true;
}
}
navigationProperty = null;
return false;
}
public void AddNavigationProperty(NavigationProperty property)
{
AddMember(property, true);
}
/// <summary>
/// Creates a NavigationProperty instance from the specified parameters.
/// </summary>
/// <param name="name">The name of the navigation property.</param>
/// <param name="typeUsage">Specifies the navigation property type and its facets.</param>
/// <param name="relationshipType">The relationship type for the navigation.</param>
/// <param name="from">The source end member in the navigation.</param>
/// <param name="to">The target end member in the navigation.</param>
/// <param name="metadataProperties">The metadata properties of the navigation property.</param>
/// <returns>The newly created NavigationProperty instance.</returns>
public static NavigationProperty Create(
string name,
TypeUsage typeUsage,
RelationshipType relationshipType,
RelationshipEndMember from,
RelationshipEndMember to,
IEnumerable<MetadataProperty> metadataProperties)
{
Check.NotEmpty(name, "name");
Check.NotNull(typeUsage, "typeUsage");
var instance = new NavigationProperty(name, typeUsage);
instance.RelationshipType = relationshipType;
instance.FromEndMember = from;
instance.ToEndMember = to;
if (metadataProperties != null)
{
instance.AddMetadataProperties(metadataProperties.ToList());
}
instance.SetReadOnly();
return instance;
}
private static bool IsModifed(NavigationProperty navigationProperty, IEnumerable<string> modifiedMembers)
{
var association = navigationProperty.RelationshipType as AssociationType;
if (association == null)
return false;
var referentialConstraint = association.ReferentialConstraints.FirstOrDefault();
if (referentialConstraint == null)
return false;
var toProperties = referentialConstraint
.ToProperties
.Select(p => p.Name)
.ToList();
return modifiedMembers.Intersect(toProperties).Any();
}
private static bool IsLoaded(AuditEntryState state, NavigationProperty navigationProperty, IMemberAccessor accessor)
{
var relationshipManager = state.ObjectStateEntry.RelationshipManager;
var getEntityReference = _relatedAccessor.Value.MakeGenericMethod(accessor.MemberType);
var parameters = new[]
{
navigationProperty.RelationshipType.FullName,
navigationProperty.ToEndMember.Name
};
var entityReference = getEntityReference.Invoke(relationshipManager, parameters) as EntityReference;
return (entityReference != null && entityReference.IsLoaded);
}
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);
}
}
protected override void VisitEdmNavigationProperty(NavigationProperty item)
{
_schemaWriter.WriteNavigationPropertyElementHeader(item);
base.VisitEdmNavigationProperty(item);
_schemaWriter.WriteEndElement();
}
public void AddNavigationProperty(NavigationProperty property)
{
Check.NotNull(property, "property");
AddMember(property, true);
}
private void CreateAndAddNavigationProperty(
StructuralType cspaceType, StructuralType ospaceType, NavigationProperty cspaceProperty)
{
EdmType ospaceRelationship;
if (CspaceToOspace.TryGetValue(cspaceProperty.RelationshipType, out ospaceRelationship))
{
Debug.Assert(ospaceRelationship is StructuralType, "Structural type expected.");
var foundTarget = false;
EdmType targetType = null;
if (Helper.IsCollectionType(cspaceProperty.TypeUsage.EdmType))
{
EdmType findType;
foundTarget =
CspaceToOspace.TryGetValue(
((CollectionType)cspaceProperty.TypeUsage.EdmType).TypeUsage.EdmType, out findType);
if (foundTarget)
{
Debug.Assert(findType is StructuralType, "Structural type expected.");
targetType = findType.GetCollectionType();
}
}
else
{
EdmType findType;
foundTarget = CspaceToOspace.TryGetValue(cspaceProperty.TypeUsage.EdmType, out findType);
if (foundTarget)
{
Debug.Assert(findType is StructuralType, "Structural type expected.");
targetType = findType;
}
}
Debug.Assert(
foundTarget,
"Since the relationship will only be created if it can find the types for both ends, we will never fail to find one of the ends");
var navigationProperty = new NavigationProperty(cspaceProperty.Name, TypeUsage.Create(targetType));
var relationshipType = (RelationshipType)ospaceRelationship;
navigationProperty.RelationshipType = relationshipType;
// we can use First because o-space relationships are created directly from
// c-space relationship
navigationProperty.ToEndMember =
(RelationshipEndMember)relationshipType.Members.First(e => e.Name == cspaceProperty.ToEndMember.Name);
navigationProperty.FromEndMember =
(RelationshipEndMember)relationshipType.Members.First(e => e.Name == cspaceProperty.FromEndMember.Name);
ospaceType.AddMember(navigationProperty);
}
else
{
var missingType =
cspaceProperty.RelationshipType.RelationshipEndMembers.Select(e => ((RefType)e.TypeUsage.EdmType).ElementType).First(
e => e != cspaceType);
LogError(
Strings.Validator_OSpace_Convention_RelationshipNotLoaded(
cspaceProperty.RelationshipType.FullName, missingType.FullName),
missingType);
}
}
/// <summary>
/// Constrcut a new member mapping metadata object
/// </summary>
/// <param name="edmNavigationProperty"> </param>
/// <param name="clrNavigationProperty"> </param>
internal ObjectNavigationPropertyMapping(NavigationProperty edmNavigationProperty, NavigationProperty clrNavigationProperty)
:
base(edmNavigationProperty, clrNavigationProperty)
{
}
protected virtual void Visit(NavigationProperty navigationProperty)
{
Visit(navigationProperty.FromEndMember);
Visit(navigationProperty.RelationshipType);
Visit(navigationProperty.ToEndMember);
Visit(navigationProperty.TypeUsage);
}
public void AddNavigationProperty(NavigationProperty property)
{
Check.NotNull <NavigationProperty>(property, nameof(property));
this.AddMember((EdmMember)property, true);
}
private void CreateAndAddNavigationProperty(
StructuralType cspaceType, StructuralType ospaceType, NavigationProperty cspaceProperty)
{
EdmType ospaceRelationship;
if (CspaceToOspace.TryGetValue(cspaceProperty.RelationshipType, out ospaceRelationship))
{
Debug.Assert(ospaceRelationship is StructuralType, "Structural type expected.");
var foundTarget = false;
EdmType targetType = null;
if (Helper.IsCollectionType(cspaceProperty.TypeUsage.EdmType))
{
EdmType findType;
foundTarget =
CspaceToOspace.TryGetValue(
((CollectionType)cspaceProperty.TypeUsage.EdmType).TypeUsage.EdmType, out findType);
if (foundTarget)
{
Debug.Assert(findType is StructuralType, "Structural type expected.");
targetType = findType.GetCollectionType();
}
}
else
{
EdmType findType;
foundTarget = CspaceToOspace.TryGetValue(cspaceProperty.TypeUsage.EdmType, out findType);
if (foundTarget)
{
Debug.Assert(findType is StructuralType, "Structural type expected.");
targetType = findType;
}
}
Debug.Assert(
foundTarget,
"Since the relationship will only be created if it can find the types for both ends, we will never fail to find one of the ends");
var navigationProperty = new NavigationProperty(cspaceProperty.Name, TypeUsage.Create(targetType));
var relationshipType = (RelationshipType)ospaceRelationship;
navigationProperty.RelationshipType = relationshipType;
// we can use First because o-space relationships are created directly from
// c-space relationship
navigationProperty.ToEndMember =
(RelationshipEndMember)relationshipType.Members.First(e => e.Name == cspaceProperty.ToEndMember.Name);
navigationProperty.FromEndMember =
(RelationshipEndMember)relationshipType.Members.First(e => e.Name == cspaceProperty.FromEndMember.Name);
ospaceType.AddMember(navigationProperty);
}
else
{
var missingType =
cspaceProperty.RelationshipType.RelationshipEndMembers.Select(e => ((RefType)e.TypeUsage.EdmType).ElementType).First(
e => e != cspaceType);
LogError(
Strings.Validator_OSpace_Convention_RelationshipNotLoaded(
cspaceProperty.RelationshipType.FullName, missingType.FullName),
missingType);
}
}
private Node RewriteNavigationProperty(
NavigationProperty navProperty,
Node sourceEntityNode, TypeUsage resultType)
{
var relProperty = new RelProperty(navProperty.RelationshipType, navProperty.FromEndMember, navProperty.ToEndMember);
PlanCompiler.Assert(
m_command.IsRelPropertyReferenced(relProperty)
|| (relProperty.ToEnd.RelationshipMultiplicity == RelationshipMultiplicity.Many),
"Unreferenced rel property? " + relProperty);
// Handle N:1
if ((relProperty.FromEnd.RelationshipMultiplicity == RelationshipMultiplicity.Many)
&&
(relProperty.ToEnd.RelationshipMultiplicity != RelationshipMultiplicity.Many))
{
return RewriteManyToOneNavigationProperty(relProperty, sourceEntityNode, resultType);
}
//
// Find the list of all relationships that could satisfy this relationship
// If we find no matching relationship set, simply return a null node / empty collection
//
var relationshipSets = GetRelationshipSets(relProperty.Relationship);
if (relationshipSets.Count == 0)
{
// return an empty set / null node
if (relProperty.ToEnd.RelationshipMultiplicity
== RelationshipMultiplicity.Many)
{
return m_command.CreateNode(m_command.CreateNewMultisetOp(resultType));
}
return m_command.CreateNode(m_command.CreateNullOp(resultType));
}
// Build out a ref over the source entity
var sourceRefNode = m_command.CreateNode(
m_command.CreateGetEntityRefOp(relProperty.FromEnd.TypeUsage),
sourceEntityNode);
// Hanlde the 1:M and N:M cases
if (relProperty.ToEnd.RelationshipMultiplicity
== RelationshipMultiplicity.Many)
{
// Handle N:M
if (relProperty.FromEnd.RelationshipMultiplicity
== RelationshipMultiplicity.Many)
{
return RewriteManyToManyNavigationProperty(relProperty, relationshipSets, sourceRefNode);
}
// Handle 1:M
return RewriteOneToManyNavigationProperty(relProperty, relationshipSets, sourceRefNode);
}
// Handle 1:1
return RewriteOneToOneNavigationProperty(relProperty, relationshipSets, sourceRefNode);
}
internal void Configure(
NavigationProperty navigationProperty, EdmModel model, EntityTypeConfiguration entityTypeConfiguration)
{
DebugCheck.NotNull(navigationProperty);
DebugCheck.NotNull(model);
DebugCheck.NotNull(entityTypeConfiguration);
navigationProperty.SetConfiguration(this);
var associationType = navigationProperty.Association;
var configuration = associationType.GetConfiguration() as NavigationPropertyConfiguration;
if (configuration == null)
{
associationType.SetConfiguration(this);
}
else
{
ValidateConsistency(configuration);
}
ConfigureInverse(associationType, model);
ConfigureEndKinds(associationType, configuration);
ConfigureDependentBehavior(associationType, model, entityTypeConfiguration);
}
/// <summary>
/// Utility method to retrieve the 'To' AssociationEndMember of a NavigationProperty
/// </summary>
/// <param name="property"> The navigation property </param>
/// <returns> The AssociationEndMember that is the target of the navigation operation represented by the NavigationProperty </returns>
private AssociationEndMember GetNavigationPropertyTargetEnd(NavigationProperty property)
{
var relationship = Metadata.GetItem<AssociationType>(property.RelationshipType.FullName, DataSpace.CSpace);
Debug.Assert(
relationship.AssociationEndMembers.Contains(property.ToEndMember.Name),
"Association does not declare member referenced by Navigation property?");
return relationship.AssociationEndMembers[property.ToEndMember.Name];
}
/// <summary>
/// Validate an NavigationProperty object
/// </summary>
/// <param name="item"> The NavigationProperty object to validate </param>
/// <param name="errors"> An error collection for adding validation errors </param>
/// <param name="validatedItems"> A dictionary keeping track of items that have been validated </param>
private void ValidateNavigationProperty(NavigationProperty item, List <EdmItemError> errors, HashSet <MetadataItem> validatedItems)
{
// Continue to process the property to see if there are other errors. This allows the user to fix as much as possible at the same time.
ValidateEdmMember(item, errors, validatedItems);
}
public void AddNavigationProperty(NavigationProperty property)
{
Check.NotNull(property, "property");
AddMember(property, true);
}
private static string GetForeignKey(NavigationProperty navigationProperty)
{
var association = navigationProperty.RelationshipType as AssociationType;
if (association == null)
return null;
// only support first constraint
var referentialConstraint = association.ReferentialConstraints.FirstOrDefault();
if (referentialConstraint == null)
return null;
var toProperties = referentialConstraint
.ToProperties
.Select(p => p.Name)
.ToArray();
return string.Join(",", toProperties);
}
private static object GetDisplayValue(AuditEntryState state, NavigationProperty navigationProperty, IMemberAccessor displayMember, DbDataRecord values)
{
if (values == null)
return null;
var association = navigationProperty.RelationshipType as AssociationType;
if (association == null)
return null;
// only support first constraint
var referentialConstraint = association.ReferentialConstraints.FirstOrDefault();
if (referentialConstraint == null)
return null;
var toProperties = referentialConstraint
.ToProperties
.Select(p => p.Name)
.ToList();
var fromProperties = referentialConstraint
.FromProperties
.Select(p => p.Name)
.ToList();
// make sure key columns match
if (fromProperties.Count != toProperties.Count)
return null;
var edmType = referentialConstraint
.FromProperties
.Select(p => p.DeclaringType)
.FirstOrDefault();
if (edmType == null)
return null;
var entitySet = state.ObjectContext.GetEntitySet(edmType.FullName);
var sql = new StringBuilder();
sql.Append("SELECT VALUE t.")
.Append(displayMember.Name)
.Append(" FROM ")
.Append(entitySet.Name)
.Append(" as t")
.Append(" WHERE ");
var parameters = new List<ObjectParameter>();
for (int index = 0; index < fromProperties.Count; index++)
{
if (index > 0)
sql.Append(" AND ");
string fromProperty = fromProperties[index];
string toProperty = toProperties[index];
var value = values.GetValue(toProperty);
var name = "@" + fromProperty;
sql.Append(" t.").Append(fromProperty);
if (value != null)
{
sql.Append(" == ").Append(name);
parameters.Add(new ObjectParameter(fromProperty, value));
}
else
{
sql.Append(" is null");
}
}
var q = state.ObjectContext.CreateQuery<object>(
sql.ToString(),
parameters.ToArray());
return q.FirstOrDefault();
}
public void TranslateColumnMap_returns_correct_columntypes_and_nullablecolumns_for_associations()
{
var metadataWorkspaceMock = new Mock<MetadataWorkspace>();
metadataWorkspaceMock.Setup(m => m.GetQueryCacheManager()).Returns(QueryCacheManager.Create());
var codeFirstOSpaceTypeFactory = new CodeFirstOSpaceTypeFactory();
var refEntityColumnMap = (EntityColumnMap)BuildSimpleEntitySetColumnMap(metadataWorkspaceMock, codeFirstOSpaceTypeFactory).Element;
var cSpaceEntityType = new EntityType(typeof(RefEntity).Name, "N", DataSpace.CSpace);
cSpaceEntityType.AddMember(new EdmProperty("Id", TypeUsage.Create(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.Int32))));
var navigationProperty = new NavigationProperty("SimpleEntity", TypeUsage.Create(refEntityColumnMap.Type.EdmType));
var associationType = new AssociationType("A", "N", false, DataSpace.CSpace);
associationType.AddMember(
new AssociationEndMember("From", new RefType(cSpaceEntityType), RelationshipMultiplicity.One));
associationType.AddMember(
new AssociationEndMember("To", new RefType((EntityType)navigationProperty.TypeUsage.EdmType), RelationshipMultiplicity.One));
associationType.SetReadOnly();
navigationProperty.RelationshipType = associationType;
navigationProperty.FromEndMember = associationType.RelationshipEndMembers[0];
navigationProperty.ToEndMember = associationType.RelationshipEndMembers[1];
cSpaceEntityType.AddMember(navigationProperty);
var entityTypeUsage = TypeUsage.Create(cSpaceEntityType);
var oSpaceEntityType = codeFirstOSpaceTypeFactory.TryCreateType(typeof(RefEntity), cSpaceEntityType);
codeFirstOSpaceTypeFactory.CspaceToOspace.Add(cSpaceEntityType, oSpaceEntityType);
var associations = new EdmItemCollection();
associations.AddInternal(associationType);
codeFirstOSpaceTypeFactory.CreateRelationships(associations);
foreach (var resolve in codeFirstOSpaceTypeFactory.ReferenceResolutions)
{
resolve();
}
var idScalarMap = new ScalarColumnMap(TypeUsage.Create(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.Int32)), "Id", 0, 1);
var refColumnMap = new RefColumnMap(
associationType.RelationshipEndMembers[1].TypeUsage, "E",
new SimpleEntityIdentity(null, new SimpleColumnMap[] { idScalarMap }));
var collectionMap = new SimpleCollectionColumnMap(
entityTypeUsage, "MockCollectionType", refColumnMap, null, null);
metadataWorkspaceMock.Setup(m => m.GetItem<EdmType>("N.RefEntity", DataSpace.OSpace))
.Returns(oSpaceEntityType);
var factory =
new Translator().TranslateColumnMap<object>(
collectionMap, metadataWorkspaceMock.Object, new SpanIndex(), MergeOption.NoTracking, streaming: false, valueLayer: false);
Assert.NotNull(factory);
Assert.Equal(new[] { null, typeof(int) }, factory.ColumnTypes);
Assert.Equal(new[] { false, true }, factory.NullableColumns);
}
protected override void VisitEdmNavigationProperty(NavigationProperty item)
{
this._schemaWriter.WriteNavigationPropertyElementHeader(item);
base.VisitEdmNavigationProperty(item);
this._schemaWriter.WriteEndElement();
}
