protected override void InvokeInternal(CommandProcessorContext cpc)
{
if (!string.IsNullOrEmpty(Role) &&
!string.Equals(End.Role.Value, Role, StringComparison.Ordinal))
{
// TODO: should this command be enqueued in the command processor?
RenameCommand c = new EntityDesignRenameCommand(End, Role, true);
CommandProcessor.InvokeSingleCommand(cpc, c);
// bug 563525: we need to update EndProperties within AssociationSetMappings if the AssociationEnd changes.
// we update the "Role" of an AssociationSetEnd in the RenameCommand but the SingleItemBinding that we have to update
// that is bound to the AssociationSetEnd is unique to this situation; it is not technically a "refactor rename".
var associationSetEnd = End.GetAntiDependenciesOfType <AssociationSetEnd>().FirstOrDefault();
if (associationSetEnd != null)
{
// we need to renormalize the associationSetEnd, since the role name will have changed.
XmlModelHelper.NormalizeAndResolve(associationSetEnd);
var endPropertiesInAssocSetMappings = associationSetEnd.GetAntiDependenciesOfType <EndProperty>();
foreach (var endProperty in endPropertiesInAssocSetMappings)
{
endProperty.Name.SetRefName(associationSetEnd);
CheckArtifactBindings.ScheduleBindingsForRebind(cpc, new HashSet <ItemBinding> {
endProperty.Name
});
}
}
}
}
protected override void InvokeInternal(CommandProcessorContext cpc)
{
// safety check, this should never be hit
Debug.Assert(
EntityToBeDerived != null && BaseType != null, "InvokeInternal is called when EntityToBeDerived or BaseType is null");
if (EntityToBeDerived == null ||
BaseType == null)
{
throw new InvalidOperationException("InvokeInternal is called when EntityToBeDerived or BaseType is null");
}
if (EntityToBeDerived.EntitySet != null)
{
// since we are creating an inheritance, we need to delete EntitySet(s) for entityToBeDerived,
// before we do this, move any EntityTypeMappings to the base type's EntitySetMapping
var entitySetToDelete = EntityToBeDerived.EntitySet as ConceptualEntitySet;
var entitySetMappingToDelete = entitySetToDelete.EntitySetMapping;
// if there isn't an ESM, there won't be anything to move
if (entitySetMappingToDelete != null)
{
var entitySetOfBaseType = BaseType.EntitySet as ConceptualEntitySet;
if (entitySetOfBaseType != null)
{
// get the base type's ESM (if it doesn't exist, create one)
var entitySetMappingOfBaseType = entitySetOfBaseType.EntitySetMapping;
if (entitySetMappingOfBaseType == null)
{
var entityContainer = EntityToBeDerived.EntityModel.EntityContainer;
Debug.Assert(entityContainer != null, "EntityToBeDerived should have an Entity Container");
var createESM = new CreateEntitySetMappingCommand(entityContainer.EntityContainerMapping, entitySetOfBaseType);
CommandProcessor.InvokeSingleCommand(cpc, createESM);
entitySetMappingOfBaseType = createESM.EntitySetMapping;
}
// move all of the ETMs
var etms = new List <EntityTypeMapping>();
etms.AddRange(entitySetMappingToDelete.EntityTypeMappings());
foreach (var etm in etms)
{
// here, to work around an xml editor bug, we clone the entity type mapping, instead of re-parenting it
etm.Clone(entitySetMappingOfBaseType);
// The old EntityTyepMapping will be deleted when we delete the entity set below.
}
}
}
// now we can delete the entity set, which will delete the ESM too
DeleteEFElementCommand.DeleteInTransaction(cpc, entitySetToDelete);
}
// remove all properties from derived entity's key (it will inherit the base type's keys now)
if (EntityToBeDerived.Key != null)
{
var propertyRefs = new List <PropertyRef>(EntityToBeDerived.Key.PropertyRefs);
foreach (var propertyRef in propertyRefs)
{
var property = propertyRef.Name.Target;
if (property != null)
{
var setKey = new SetKeyPropertyCommand(property, false, false, true);
CommandProcessor.InvokeSingleCommand(cpc, setKey);
}
}
}
// set the base type
EntityToBeDerived.BaseType.SetRefName(BaseType);
//
// if there is a referential constraint, then update any principals in the ref constraint to
// point to properties in the new entity type.
//
foreach (var end in EntityToBeDerived.GetAntiDependenciesOfType <AssociationEnd>())
{
foreach (var role in end.GetAntiDependenciesOfType <ReferentialConstraintRole>())
{
var rc = role.Parent as ReferentialConstraint;
if (rc != null &&
rc.Principal == role)
{
//
// this is the principal, so we want to update any keys in RC to reflect new keys
// in the new base type. If the number of keys don't match, we'll delete any leftovers
//
var keys = BaseType.ResolvableTopMostBaseType.ResolvableKeys.GetEnumerator();
foreach (var pr in rc.Principal.PropertyRefs)
{
if (keys.MoveNext())
{
// update this property ref to reflect the new key in the derived type
pr.Name.SetRefName(keys.Current);
ItemBinding[] bindings = { pr.Name };
CheckArtifactBindings.ScheduleBindingsForRebind(cpc, bindings);
}
else
{
// no more keys in the new base type, so delete this property ref & it's peer
// in the dependent section
Command cmd = new DeleteReferentialConstraintPropertyRefCommand(pr);
// don't invoke this command now, as it will modify the collection we're iterating over
CommandProcessor.EnqueueCommand(cmd);
}
}
}
}
}
// rebind and verify
EntityToBeDerived.BaseType.Rebind();
Debug.Assert(
EntityToBeDerived.BaseType.Status == BindingStatus.Known,
"EntityToBeDerived.BaseType.Status should be BindingStatus.Known, instead it is "
+ EntityToBeDerived.BaseType.Status.ToString());
}