private void HandleConstraintElement(XmlReader reader)
{
ReferentialConstraint referentialConstraint = new ReferentialConstraint(this);
referentialConstraint.Parse(reader);
this.Constraints.Add(referentialConstraint);
if (this.Schema.DataModel != SchemaDataModelOption.EntityDataModel || this.Schema.SchemaVersion < 2.0)
{
return;
}
this._isForeignKey = true;
}
/// <summary>
/// handle the constraint element
/// </summary>
/// <param name="reader"> XmlReader positioned at the constraint element </param>
private void HandleConstraintElement(XmlReader reader)
{
DebugCheck.NotNull(reader);
var constraint = new ReferentialConstraint(this);
constraint.Parse(reader);
Constraints.Add(constraint);
if (Schema.DataModel == SchemaDataModelOption.EntityDataModel &&
Schema.SchemaVersion >= XmlConstants.EdmVersionForV2)
{
// in V2, referential constraint implies foreign key
_isForeignKey = true;
}
}
internal override void Validate()
{
base.Validate();
this._principalRole.Validate();
this._dependentRole.Validate();
if (!ReferentialConstraint.ReadyForFurtherValidation(this._principalRole) || !ReferentialConstraint.ReadyForFurtherValidation(this._dependentRole))
{
return;
}
IRelationshipEnd end1 = this._principalRole.End;
IRelationshipEnd end2 = this._dependentRole.End;
if (this._principalRole.Name == this._dependentRole.Name)
{
this.AddError(ErrorCode.SameRoleReferredInReferentialConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.SameRoleReferredInReferentialConstraint((object)this.ParentElement.Name));
}
bool isKeyProperty1;
bool areAllPropertiesNullable1;
bool isAnyPropertyNullable1;
bool isSubsetOfKeyProperties1;
ReferentialConstraint.IsKeyProperty(this._dependentRole, end2.Type, out isKeyProperty1, out areAllPropertiesNullable1, out isAnyPropertyNullable1, out isSubsetOfKeyProperties1);
bool isKeyProperty2;
bool areAllPropertiesNullable2;
bool isAnyPropertyNullable2;
bool isSubsetOfKeyProperties2;
ReferentialConstraint.IsKeyProperty(this._principalRole, end1.Type, out isKeyProperty2, out areAllPropertiesNullable2, out isAnyPropertyNullable2, out isSubsetOfKeyProperties2);
if (!isKeyProperty2)
{
this.AddError(ErrorCode.InvalidPropertyInRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.InvalidFromPropertyInRelationshipConstraint((object)this.PrincipalRole.Name, (object)end1.Type.FQName, (object)this.ParentElement.FQName));
}
else
{
bool flag = this.Schema.SchemaVersion <= 1.1;
RelationshipMultiplicity relationshipMultiplicity1 = (flag ? (areAllPropertiesNullable2 ? 1 : 0) : (isAnyPropertyNullable2 ? 1 : 0)) != 0 ? RelationshipMultiplicity.ZeroOrOne : RelationshipMultiplicity.One;
RelationshipMultiplicity relationshipMultiplicity2 = (flag ? (areAllPropertiesNullable1 ? 1 : 0) : (isAnyPropertyNullable1 ? 1 : 0)) != 0 ? RelationshipMultiplicity.ZeroOrOne : RelationshipMultiplicity.Many;
IRelationshipEnd relationshipEnd1 = end1;
RelationshipMultiplicity?multiplicity1 = end1.Multiplicity;
RelationshipMultiplicity?nullable1 = new RelationshipMultiplicity?(multiplicity1.HasValue ? multiplicity1.GetValueOrDefault() : relationshipMultiplicity1);
relationshipEnd1.Multiplicity = nullable1;
IRelationshipEnd relationshipEnd2 = end2;
RelationshipMultiplicity?multiplicity2 = end2.Multiplicity;
RelationshipMultiplicity?nullable2 = new RelationshipMultiplicity?(multiplicity2.HasValue ? multiplicity2.GetValueOrDefault() : relationshipMultiplicity2);
relationshipEnd2.Multiplicity = nullable2;
RelationshipMultiplicity?multiplicity3 = end1.Multiplicity;
if ((multiplicity3.GetValueOrDefault() != RelationshipMultiplicity.Many ? 0 : (multiplicity3.HasValue ? 1 : 0)) != 0)
{
this.AddError(ErrorCode.InvalidMultiplicityInRoleInRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.InvalidMultiplicityFromRoleUpperBoundMustBeOne((object)this._principalRole.Name, (object)this.ParentElement.Name));
}
else
{
if (areAllPropertiesNullable1)
{
RelationshipMultiplicity?multiplicity4 = end1.Multiplicity;
if ((multiplicity4.GetValueOrDefault() != RelationshipMultiplicity.One ? 0 : (multiplicity4.HasValue ? 1 : 0)) != 0)
{
this.AddError(ErrorCode.InvalidMultiplicityInRoleInRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.InvalidMultiplicityFromRoleToPropertyNullableV1((object)this._principalRole.Name, (object)this.ParentElement.Name));
goto label_13;
}
}
if (flag && !areAllPropertiesNullable1 || !flag && !isAnyPropertyNullable1)
{
RelationshipMultiplicity?multiplicity4 = end1.Multiplicity;
if ((multiplicity4.GetValueOrDefault() != RelationshipMultiplicity.One ? 1 : (!multiplicity4.HasValue ? 1 : 0)) != 0)
{
this.AddError(ErrorCode.InvalidMultiplicityInRoleInRelationshipConstraint, EdmSchemaErrorSeverity.Error, !flag ? (object)Strings.InvalidMultiplicityFromRoleToPropertyNonNullableV2((object)this._principalRole.Name, (object)this.ParentElement.Name) : (object)Strings.InvalidMultiplicityFromRoleToPropertyNonNullableV1((object)this._principalRole.Name, (object)this.ParentElement.Name));
}
}
}
label_13:
RelationshipMultiplicity? multiplicity5 = end2.Multiplicity;
if ((multiplicity5.GetValueOrDefault() != RelationshipMultiplicity.One ? 0 : (multiplicity5.HasValue ? 1 : 0)) != 0 && this.Schema.DataModel == SchemaDataModelOption.ProviderDataModel)
{
this.AddError(ErrorCode.InvalidMultiplicityInRoleInRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.InvalidMultiplicityToRoleLowerBoundMustBeZero((object)this._dependentRole.Name, (object)this.ParentElement.Name));
}
if (!isSubsetOfKeyProperties1 && !this.ParentElement.IsForeignKey && this.Schema.DataModel == SchemaDataModelOption.EntityDataModel)
{
this.AddError(ErrorCode.InvalidPropertyInRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.InvalidToPropertyInRelationshipConstraint((object)this.DependentRole.Name, (object)end2.Type.FQName, (object)this.ParentElement.FQName));
}
if (isKeyProperty1)
{
RelationshipMultiplicity?multiplicity4 = end2.Multiplicity;
if ((multiplicity4.GetValueOrDefault() != RelationshipMultiplicity.Many ? 0 : (multiplicity4.HasValue ? 1 : 0)) != 0)
{
this.AddError(ErrorCode.InvalidMultiplicityInRoleInRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.InvalidMultiplicityToRoleUpperBoundMustBeOne((object)end2.Name, (object)this.ParentElement.Name));
}
}
else
{
RelationshipMultiplicity?multiplicity4 = end2.Multiplicity;
if ((multiplicity4.GetValueOrDefault() != RelationshipMultiplicity.Many ? 1 : (!multiplicity4.HasValue ? 1 : 0)) != 0)
{
this.AddError(ErrorCode.InvalidMultiplicityInRoleInRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.InvalidMultiplicityToRoleUpperBoundMustBeMany((object)end2.Name, (object)this.ParentElement.Name));
}
}
if (this._dependentRole.RoleProperties.Count != this._principalRole.RoleProperties.Count)
{
this.AddError(ErrorCode.MismatchNumberOfPropertiesInRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.MismatchNumberOfPropertiesinRelationshipConstraint);
}
else
{
for (int index = 0; index < this._dependentRole.RoleProperties.Count; ++index)
{
if (this._dependentRole.RoleProperties[index].Property.Type != this._principalRole.RoleProperties[index].Property.Type)
{
this.AddError(ErrorCode.TypeMismatchRelationshipConstraint, EdmSchemaErrorSeverity.Error, (object)Strings.TypeMismatchRelationshipConstraint((object)this._dependentRole.RoleProperties[index].Name, (object)this._dependentRole.End.Type.Identity, (object)this._principalRole.RoleProperties[index].Name, (object)this._principalRole.End.Type.Identity, (object)this.ParentElement.Name));
}
}
}
}
}
// <summary>
// Constructs an EntityContainerAssociationSetEnd
// </summary>
// <param name="parentElement"> Reference to the schema element. </param>
public ReferentialConstraintRoleElement(ReferentialConstraint parentElement)
: base(parentElement)
{
}
private static AssociationType ConvertToAssociationType(
Relationship element,
DbProviderManifest providerManifest,
Converter.ConversionCache convertedItemCache,
Dictionary <SchemaElement, GlobalItem> newGlobalItems)
{
AssociationType associationType = new AssociationType(element.Name, element.Namespace, element.IsForeignKey, Converter.GetDataSpace(providerManifest));
newGlobalItems.Add((SchemaElement)element, (GlobalItem)associationType);
foreach (RelationshipEnd end in (IEnumerable <IRelationshipEnd>)element.Ends)
{
EntityType endMemberType = (EntityType)Converter.LoadSchemaElement((System.Data.Entity.Core.SchemaObjectModel.SchemaType)end.Type, providerManifest, convertedItemCache, newGlobalItems);
AssociationEndMember associationEndMember = Converter.InitializeAssociationEndMember(associationType, (IRelationshipEnd)end, endMemberType);
Converter.AddOtherContent((SchemaElement)end, (MetadataItem)associationEndMember);
foreach (OnOperation operation in (IEnumerable <OnOperation>)end.Operations)
{
if (operation.Operation == Operation.Delete)
{
OperationAction operationAction = OperationAction.None;
switch (operation.Action)
{
case System.Data.Entity.Core.SchemaObjectModel.Action.None:
operationAction = OperationAction.None;
break;
case System.Data.Entity.Core.SchemaObjectModel.Action.Cascade:
operationAction = OperationAction.Cascade;
break;
}
associationEndMember.DeleteBehavior = operationAction;
}
}
if (end.Documentation != null)
{
associationEndMember.Documentation = Converter.ConvertToDocumentation(end.Documentation);
}
}
for (int index = 0; index < element.Constraints.Count; ++index)
{
System.Data.Entity.Core.SchemaObjectModel.ReferentialConstraint constraint = element.Constraints[index];
AssociationEndMember member1 = (AssociationEndMember)associationType.Members[constraint.PrincipalRole.Name];
AssociationEndMember member2 = (AssociationEndMember)associationType.Members[constraint.DependentRole.Name];
EntityTypeBase elementType1 = ((RefType)member1.TypeUsage.EdmType).ElementType;
EntityTypeBase elementType2 = ((RefType)member2.TypeUsage.EdmType).ElementType;
ReferentialConstraint referentialConstraint = new ReferentialConstraint((RelationshipEndMember)member1, (RelationshipEndMember)member2, (IEnumerable <EdmProperty>)Converter.GetProperties(elementType1, constraint.PrincipalRole.RoleProperties), (IEnumerable <EdmProperty>)Converter.GetProperties(elementType2, constraint.DependentRole.RoleProperties));
if (constraint.Documentation != null)
{
referentialConstraint.Documentation = Converter.ConvertToDocumentation(constraint.Documentation);
}
if (constraint.PrincipalRole.Documentation != null)
{
referentialConstraint.FromRole.Documentation = Converter.ConvertToDocumentation(constraint.PrincipalRole.Documentation);
}
if (constraint.DependentRole.Documentation != null)
{
referentialConstraint.ToRole.Documentation = Converter.ConvertToDocumentation(constraint.DependentRole.Documentation);
}
associationType.AddReferentialConstraint(referentialConstraint);
Converter.AddOtherContent((SchemaElement)element.Constraints[index], (MetadataItem)referentialConstraint);
}
if (element.Documentation != null)
{
associationType.Documentation = Converter.ConvertToDocumentation(element.Documentation);
}
Converter.AddOtherContent((SchemaElement)element, (MetadataItem)associationType);
return(associationType);
}
public ReferentialConstraintRoleElement(ReferentialConstraint parentElement)
: base((SchemaElement)parentElement, (IDbDependencyResolver)null)
{
}