internal override void ClearCollectionOrRef(IEntityWrapper wrappedEntity, RelationshipNavigation navigation, bool doCascadeDelete)
{
if (null != _wrappedRelatedEntities)
{
//copy into list because changing collection member is not allowed during enumeration.
// If possible avoid copying into list.
var tempCopy = new List <IEntityWrapper>(_wrappedRelatedEntities.Values);
foreach (var wrappedCurrent in tempCopy)
{
// Following condition checks if we have already visited this graph node. If its true then
// we should not do fixup because that would cause circular loop
if ((wrappedEntity.Entity == wrappedCurrent.Entity) &&
(navigation.Equals(RelationshipNavigation)))
{
Remove(
wrappedCurrent, /*fixup*/ false, /*deleteEntity*/ false, /*deleteOwner*/ false, /*applyReferentialConstraints*/
false, /*preserveForeignKey*/ false);
}
else
{
Remove(
wrappedCurrent, /*fixup*/ true, doCascadeDelete, /*deleteOwner*/ false, /*applyReferentialConstraints*/ false,
/*preserveForeignKey*/ false);
}
}
Debug.Assert(
_wrappedRelatedEntities.Count == 0, "After removing all related entities local collection count should be zero");
}
}
internal EntityReference(
IEntityWrapper wrappedOwner,
RelationshipNavigation navigation,
IRelationshipFixer relationshipFixer)
: base(wrappedOwner, navigation, relationshipFixer)
{
}
internal override void ClearCollectionOrRef(
IEntityWrapper wrappedEntity,
RelationshipNavigation navigation,
bool doCascadeDelete)
{
if (wrappedEntity == null)
{
wrappedEntity = NullEntityWrapper.NullWrapper;
}
if (this._wrappedCachedValue.Entity != null)
{
if (wrappedEntity.Entity == this._wrappedCachedValue.Entity && navigation.Equals((object)this.RelationshipNavigation))
{
this.Remove(this._wrappedCachedValue, false, false, false, false, false);
}
else
{
this.Remove(this._wrappedCachedValue, true, doCascadeDelete, false, true, false);
}
}
else if (this.WrappedOwner.Entity != null && this.WrappedOwner.Context != null && !this.UsingNoTracking)
{
this.WrappedOwner.Context.ObjectStateManager.GetEntityEntry(this.WrappedOwner.Entity).DeleteRelationshipsThatReferenceKeys(this.RelationshipSet, this.ToEndMember);
}
if (this.WrappedOwner.Entity == null)
{
return;
}
this.DetachedEntityKey = (EntityKey)null;
}
internal EntityCollection(
IEntityWrapper wrappedOwner,
RelationshipNavigation navigation,
IRelationshipFixer relationshipFixer)
: base(wrappedOwner, navigation, relationshipFixer)
{
}
public static Mock <EntityReference <TEntity> > CreateMockEntityReference <TEntity>(TEntity refreshedValue)
where TEntity : class
{
var relationshipNavigation = new RelationshipNavigation(
relationshipName: "relationship",
from: "from",
to: "to",
fromAccessor: new NavigationPropertyAccessor(string.Empty),
toAccessor: new NavigationPropertyAccessor(string.Empty));
var entityReferenceMock = new Mock <EntityReference <TEntity> >(
Internal.MockHelper.CreateMockEntityWrapper().Object,
relationshipNavigation,
new Mock <IRelationshipFixer>(MockBehavior.Strict).Object)
{
CallBase = true
};
var associationType = new AssociationType(
name: "associationName",
namespaceName: "associationNamespace",
foreignKey: true,
dataSpace: DataSpace.CSpace);
entityReferenceMock.Setup(m => m.RelationMetadata).Returns(associationType);
var associationSet = new AssociationSet(name: "associationSetName", associationType: associationType);
entityReferenceMock.Setup(m => m.RelationshipSet).Returns(associationSet);
entityReferenceMock.Setup(m => m.ObjectContext).Returns(Objects.MockHelper.CreateMockObjectContext <DbDataRecord>());
var objectQueryMock = Objects.MockHelper.CreateMockObjectQuery(refreshedValue);
var hasResults = refreshedValue != null;
entityReferenceMock.Setup(m => m.ValidateLoad <TEntity>(It.IsAny <MergeOption>(), It.IsAny <string>(), out hasResults))
.Returns(() => objectQueryMock.Object);
var refType =
new RefType(new EntityType(name: "entityTypeName", namespaceName: "entityTypeNamespace", dataSpace: DataSpace.CSpace));
var fromEndMember = new AssociationEndMember(
name: "fromEndMember",
endRefType: refType,
multiplicity: RelationshipMultiplicity.Many);
entityReferenceMock.Setup(m => m.FromEndMember).Returns(fromEndMember);
var toEndMember = new AssociationEndMember(
name: "toEndMember",
endRefType: refType,
multiplicity: RelationshipMultiplicity.Many);
entityReferenceMock.Setup(m => m.ToEndMember).Returns(toEndMember);
entityReferenceMock.Setup(m => m.GetInternalEnumerable()).Returns(new[] { refreshedValue });
return(entityReferenceMock);
}
internal EntityReference(
IEntityWrapper wrappedOwner,
RelationshipNavigation navigation,
IRelationshipFixer relationshipFixer)
: base(wrappedOwner, navigation, relationshipFixer)
{
this._wrappedCachedValue = NullEntityWrapper.NullWrapper;
}
public override bool Equals(object obj)
{
RelationshipNavigation relationshipNavigation = obj as RelationshipNavigation;
if (this == relationshipNavigation)
{
return(true);
}
if (this != null && relationshipNavigation != null && (this.RelationshipName == relationshipNavigation.RelationshipName && this.From == relationshipNavigation.From))
{
return(this.To == relationshipNavigation.To);
}
return(false);
}
internal override void ClearCollectionOrRef(IEntityWrapper wrappedEntity, RelationshipNavigation navigation, bool doCascadeDelete)
{
if (wrappedEntity == null)
{
wrappedEntity = NullEntityWrapper.NullWrapper;
}
if (null != _wrappedCachedValue.Entity)
{
// Following condition checks if we have already visited this graph node. If its true then
// we should not do fixup because that would cause circular loop
if ((wrappedEntity.Entity == _wrappedCachedValue.Entity) &&
(navigation.Equals(RelationshipNavigation)))
{
Remove(
_wrappedCachedValue, /*fixup*/ false, /*deleteEntity*/ false, /*deleteOwner*/ false, /*applyReferentialConstraints*/
false, /*preserveForeignKey*/ false);
}
else
{
Remove(
_wrappedCachedValue, /*fixup*/ true, doCascadeDelete, /*deleteOwner*/ false, /*applyReferentialConstraints*/ true,
/*preserveForeignKey*/ false);
}
}
else
{
// this entity reference could be replacing a relationship that points to a key entry
// we need to search relationships on the Owner entity to see if this is true, and if so remove the relationship entry
if (WrappedOwner.Entity != null &&
WrappedOwner.Context != null &&
!UsingNoTracking)
{
var ownerEntry = WrappedOwner.Context.ObjectStateManager.GetEntityEntry(WrappedOwner.Entity);
ownerEntry.DeleteRelationshipsThatReferenceKeys(RelationshipSet, ToEndMember);
}
}
// If we have an Owner, clear the DetachedEntityKey.
// If we do not have an owner, retain the key so that we can resolve the difference when the entity is attached to a context
if (WrappedOwner.Entity != null)
{
// Clear the detachedEntityKey as well. In cases where we have to fix up the detachedEntityKey, we will not always be able to detect
// if we have *only* a Deleted relationship for a given entity/relationship/role, so clearing this here will ensure that
// even if no other relationships are added, the key value will still be correct.
DetachedEntityKey = null;
}
}
internal override void ClearCollectionOrRef(
IEntityWrapper wrappedEntity,
RelationshipNavigation navigation,
bool doCascadeDelete)
{
if (this._wrappedRelatedEntities == null)
{
return;
}
foreach (IEntityWrapper wrappedEntity1 in new List <IEntityWrapper>((IEnumerable <IEntityWrapper>) this._wrappedRelatedEntities.Values))
{
if (wrappedEntity.Entity == wrappedEntity1.Entity && navigation.Equals((object)this.RelationshipNavigation))
{
this.Remove(wrappedEntity1, false, false, false, false, false);
}
else
{
this.Remove(wrappedEntity1, true, doCascadeDelete, false, false, false);
}
}
}
internal EntityReference(IEntityWrapper wrappedOwner, RelationshipNavigation navigation, IRelationshipFixer relationshipFixer)
: base(wrappedOwner, navigation, relationshipFixer)
{
}
// <summary>
// Used during relationship fixup when the source end of the relationship is not
// yet in the relationships list, and needs to be created
// </summary>
// <param name="navigation"> RelationshipNavigation to be set on new RelatedEnd </param>
// <param name="relationshipManager"> RelationshipManager to use for creating the new end </param>
// <returns> Reference to the new collection or reference on the other end of the relationship </returns>
RelatedEnd IRelationshipFixer.CreateSourceEnd(RelationshipNavigation navigation, RelationshipManager relationshipManager)
{
return(relationshipManager.CreateRelatedEnd <TTargetEntity, TSourceEntity>(
navigation, _targetRoleMultiplicity, _sourceRoleMultiplicity, /*existingRelatedEnd*/ null));
}
RelatedEnd IRelationshipFixer.CreateSourceEnd(
RelationshipNavigation navigation,
RelationshipManager relationshipManager)
{
return(relationshipManager.CreateRelatedEnd <TTargetEntity, TSourceEntity>(navigation, this._targetRoleMultiplicity, this._sourceRoleMultiplicity, (RelatedEnd)null));
}
