public static void AdjustEFCoreProperties(PropertyDescriptorCollection propertyDescriptors, Association element)
{
//ModelRoot modelRoot = element.Source.ModelRoot;
//for (int index = 0; index < propertyDescriptors.Count; index++)
//{
// bool shouldRemove = false;
// switch (propertyDescriptors[index].Name)
// {
// default:
// break;
// }
// if (shouldRemove)
// propertyDescriptors.Remove(propertyDescriptors[index--]);
//}
}
internal static bool SetEndpointRoles(Association element)
{
switch (element.TargetMultiplicity)
{
case Multiplicity.ZeroMany:
switch (element.SourceMultiplicity)
{
case Multiplicity.ZeroMany:
element.SourceRole = EndpointRole.NotApplicable;
element.TargetRole = EndpointRole.NotApplicable;
return(true);
case Multiplicity.One:
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
return(true);
case Multiplicity.ZeroOne:
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
return(true);
}
break;
case Multiplicity.One:
switch (element.SourceMultiplicity)
{
case Multiplicity.ZeroMany:
element.SourceRole = EndpointRole.Dependent;
element.TargetRole = EndpointRole.Principal;
return(true);
case Multiplicity.One:
return(false);
case Multiplicity.ZeroOne:
element.SourceRole = EndpointRole.Dependent;
element.TargetRole = EndpointRole.Principal;
return(true);
}
break;
case Multiplicity.ZeroOne:
switch (element.SourceMultiplicity)
{
case Multiplicity.ZeroMany:
element.SourceRole = EndpointRole.Dependent;
element.TargetRole = EndpointRole.Principal;
return(true);
case Multiplicity.One:
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
return(true);
case Multiplicity.ZeroOne:
return(false);
}
break;
}
return(false);
}
/// <inheritdoc />
public override void ElementPropertyChanged(ElementPropertyChangedEventArgs e)
{
base.ElementPropertyChanged(e);
Association element = (Association)e.ModelElement;
if (element.IsDeleted)
{
return;
}
Store store = element.Store;
Transaction current = store.TransactionManager.CurrentTransaction;
if (current.IsSerializing || ModelRoot.BatchUpdating)
{
return;
}
if (Equals(e.NewValue, e.OldValue))
{
return;
}
List <string> errorMessages = EFCoreValidator.GetErrors(element).ToList();
BidirectionalAssociation bidirectionalAssociation = element as BidirectionalAssociation;
using (Transaction inner = store.TransactionManager.BeginTransaction("Redraw Association"))
{
switch (e.DomainProperty.Name)
{
case "FKPropertyName":
{
string fkPropertyName = e.NewValue?.ToString();
bool fkPropertyError = false;
// these can be multiples, separated by a comma
string[] priorForeignKeyPropertyNames = e.OldValue?.ToString().Split(',').Select(n => n.Trim()).ToArray() ?? new string[0];
IEnumerable <ModelAttribute> priorForeignKeyModelAttributes = string.IsNullOrEmpty(e.OldValue?.ToString())
? Array.Empty <ModelAttribute>()
: priorForeignKeyPropertyNames
.Select(oldValue => element.Dependent.Attributes.FirstOrDefault(a => a.Name == oldValue))
.Where(x => x != null)
.ToArray();
string summaryBoilerplate = element.GetSummaryBoilerplate();
if (!string.IsNullOrEmpty(fkPropertyName))
{
string tag = $"({element.Source.Name}:{element.Target.Name})";
if (element.Dependent == null)
{
errorMessages.Add($"{tag} can't have foreign keys defined; no dependent role found");
break;
}
string[] foreignKeyPropertyNames = element.GetForeignKeyPropertyNames();
int propertyCount = foreignKeyPropertyNames.Length;
int identityCount = element.Principal.AllIdentityAttributes.Count();
if (propertyCount != identityCount)
{
errorMessages.Add($"{tag} foreign key must have zero or {identityCount} {(identityCount == 1 ? "property" : "properties")} defined, since "
+ $"{element.Principal.Name} has {identityCount} identity properties; found {propertyCount} instead");
fkPropertyError = true;
}
// validate names
foreach (string propertyName in foreignKeyPropertyNames)
{
if (!CodeGenerator.IsValidLanguageIndependentIdentifier(propertyName))
{
errorMessages.Add($"{tag} FK property name '{propertyName}' isn't a valid .NET identifier");
fkPropertyError = true;
}
if (element.Dependent.AllAttributes.Except(element.Dependent.Attributes).Any(a => a.Name == propertyName))
{
errorMessages.Add($"{tag} FK property name '{propertyName}' is used in a base class of {element.Dependent.Name}");
fkPropertyError = true;
}
}
fkPropertyError &= CheckFkAutoIdentityErrors(element, errorMessages);
if (!fkPropertyError)
{
// remove any flags and locks on the attributes that were foreign keys
foreach (ModelAttribute modelAttribute in priorForeignKeyModelAttributes)
{
modelAttribute.ClearFKData(summaryBoilerplate);
}
element.EnsureForeignKeyAttributes();
IEnumerable <ModelAttribute> currentForeignKeyModelAttributes = foreignKeyPropertyNames.Select(newValue => element.Dependent.Attributes.FirstOrDefault(a => a.Name == newValue));
foreach (ModelAttribute modelAttribute in currentForeignKeyModelAttributes)
{
modelAttribute.SetFKData(summaryBoilerplate);
}
}
}
else
{
// foreign key was removed
// remove locks
foreach (ModelAttribute modelAttribute in priorForeignKeyModelAttributes)
{
modelAttribute.ClearFKData(summaryBoilerplate);
}
}
}
break;
case "SourceCustomAttributes":
if (bidirectionalAssociation != null && !string.IsNullOrWhiteSpace(bidirectionalAssociation.SourceCustomAttributes))
{
bidirectionalAssociation.SourceCustomAttributes = $"[{bidirectionalAssociation.SourceCustomAttributes.Trim('[', ']')}]";
CheckSourceForDisplayText(bidirectionalAssociation);
}
break;
case "SourceDisplayText":
if (bidirectionalAssociation != null)
{
CheckSourceForDisplayText(bidirectionalAssociation);
}
break;
case "SourceMultiplicity":
Multiplicity sourceMultiplicity = (Multiplicity)e.NewValue;
// change unidirectional source cardinality
// if target is dependent
// source cardinality is 0..1 or 1
if (element.Target.IsDependentType && sourceMultiplicity == Multiplicity.ZeroMany)
{
errorMessages.Add($"Can't have a 0..* association from {element.Target.Name} to dependent type {element.Source.Name}");
break;
}
if ((sourceMultiplicity == Multiplicity.One && element.TargetMultiplicity == Multiplicity.One) ||
(sourceMultiplicity == Multiplicity.ZeroOne && element.TargetMultiplicity == Multiplicity.ZeroOne))
{
if (element.SourceRole != EndpointRole.NotSet)
{
element.SourceRole = EndpointRole.NotSet;
}
if (element.TargetRole != EndpointRole.NotSet)
{
element.TargetRole = EndpointRole.NotSet;
}
}
else
{
SetEndpointRoles(element);
}
// cascade delete behavior could now be illegal. Reset to default
element.SourceDeleteAction = DeleteAction.Default;
element.TargetDeleteAction = DeleteAction.Default;
break;
case "SourcePropertyName":
string sourcePropertyNameErrorMessage = ValidateAssociationIdentifier(element, element.Target, (string)e.NewValue);
if (EFModelDiagram.IsDropping && sourcePropertyNameErrorMessage != null)
{
element.Delete();
}
else
{
errorMessages.Add(sourcePropertyNameErrorMessage);
}
break;
case "SourceRole":
if (element.Source.IsDependentType)
{
element.SourceRole = EndpointRole.Dependent;
element.TargetRole = EndpointRole.Principal;
}
else if (!SetEndpointRoles(element))
{
if (element.SourceRole == EndpointRole.Dependent && element.TargetRole != EndpointRole.Principal)
{
element.TargetRole = EndpointRole.Principal;
}
else if (element.SourceRole == EndpointRole.Principal && element.TargetRole != EndpointRole.Dependent)
{
element.TargetRole = EndpointRole.Dependent;
}
}
break;
case "TargetCustomAttributes":
if (!string.IsNullOrWhiteSpace(element.TargetCustomAttributes))
{
element.TargetCustomAttributes = $"[{element.TargetCustomAttributes.Trim('[', ']')}]";
CheckTargetForDisplayText(element);
}
break;
case "TargetDisplayText":
CheckTargetForDisplayText(element);
break;
case "TargetMultiplicity":
Multiplicity newTargetMultiplicity = (Multiplicity)e.NewValue;
// change unidirectional target cardinality
// if target is dependent
// target cardinality must be 0..1 or 1
if (element.Target.IsDependentType && newTargetMultiplicity == Multiplicity.ZeroMany)
{
errorMessages.Add($"Can't have a 0..* association from {element.Source.Name} to dependent type {element.Target.Name}");
break;
}
if ((element.SourceMultiplicity == Multiplicity.One && newTargetMultiplicity == Multiplicity.One) ||
(element.SourceMultiplicity == Multiplicity.ZeroOne && newTargetMultiplicity == Multiplicity.ZeroOne))
{
if (element.SourceRole != EndpointRole.NotSet)
{
element.SourceRole = EndpointRole.NotSet;
}
if (element.TargetRole != EndpointRole.NotSet)
{
element.TargetRole = EndpointRole.NotSet;
}
}
else
{
SetEndpointRoles(element);
}
// cascade delete behavior could now be illegal. Reset to default
element.SourceDeleteAction = DeleteAction.Default;
element.TargetDeleteAction = DeleteAction.Default;
break;
case "TargetPropertyName":
// if we're creating an association via drag/drop, it's possible the existing property name
// is the same as the default property name. The default doesn't get created until the transaction is
// committed, so the drop's action will cause a name clash. Remove the clashing property, but
// only if drag/drop.
string targetPropertyNameErrorMessage = ValidateAssociationIdentifier(element, element.Source, (string)e.NewValue);
if (EFModelDiagram.IsDropping && targetPropertyNameErrorMessage != null)
{
element.Delete();
}
else
{
errorMessages.Add(targetPropertyNameErrorMessage);
}
break;
case "TargetRole":
if (element.Target.IsDependentType)
{
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
}
else if (!SetEndpointRoles(element))
{
if (element.TargetRole == EndpointRole.Dependent && element.SourceRole != EndpointRole.Principal)
{
element.SourceRole = EndpointRole.Principal;
}
else if (element.TargetRole == EndpointRole.Principal && element.SourceRole != EndpointRole.Dependent)
{
element.SourceRole = EndpointRole.Dependent;
}
}
break;
}
element.RedrawItem();
inner.Commit();
}
errorMessages = errorMessages.Where(m => m != null).ToList();
if (errorMessages.Any())
{
current.Rollback();
ErrorDisplay.Show(string.Join("\n", errorMessages));
}
}
public override void ElementAdded(ElementAddedEventArgs e)
{
base.ElementAdded(e);
Association element = (Association)e.ModelElement;
Store store = element.Store;
Transaction current = store.TransactionManager.CurrentTransaction;
PluralizationService pluralizationService = ModelRoot.PluralizationService;
if (current.IsSerializing)
{
return;
}
// add unidirectional
// source can't be dependent (connection builder handles this)
// if target is dependent,
// source cardinality is 0..1
// target cardinality is 0..1
// source is principal
if (element is UnidirectionalAssociation && element.Target.IsDependentType)
{
element.TargetMultiplicity = Multiplicity.ZeroOne;
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
}
// add bidirectional
// neither can be dependent (connection builder handles this)
if (string.IsNullOrEmpty(element.TargetPropertyName))
{
string rootName = element.TargetMultiplicity == Multiplicity.ZeroMany && pluralizationService?.IsSingular(element.Target.Name) == true
? pluralizationService.Pluralize(element.Target.Name)
: element.Target.Name;
string identifierName = rootName;
int index = 0;
while (element.Source.HasPropertyNamed(identifierName))
{
identifierName = $"{rootName}_{++index}";
}
element.TargetPropertyName = identifierName;
}
if (element is BidirectionalAssociation bidirectionalAssociation)
{
if (string.IsNullOrEmpty(bidirectionalAssociation.SourcePropertyName))
{
string rootName = element.SourceMultiplicity == Multiplicity.ZeroMany && pluralizationService?.IsSingular(element.Source.Name) == true
? pluralizationService.Pluralize(element.Source.Name)
: element.Source.Name;
string identifierName = rootName;
int index = 0;
while (element.Target.HasPropertyNamed(identifierName))
{
identifierName = $"{rootName}_{++index}";
}
bidirectionalAssociation.SourcePropertyName = identifierName;
}
}
AssociationChangeRules.SetEndpointRoles(element);
}
/// <summary>
/// Method to set IsTargetImplementNotifyTracking to false so that this instance of this tracking property is not
/// storage-based.
/// </summary>
/// <param name="element">
/// The element on which to reset the property value.
/// </param>
internal void PreResetValue(Association element)
{
// Force the IsTargetImplementNotifyTracking property to false so that the value
// of the TargetImplementNotify property is retrieved from storage.
element.isTargetImplementNotifyTrackingPropertyStorage = false;
}
public override void ElementPropertyChanged(ElementPropertyChangedEventArgs e)
{
base.ElementPropertyChanged(e);
ModelClass element = (ModelClass)e.ModelElement;
if (element.IsDeleted)
{
return;
}
Store store = element.Store;
Transaction current = store.TransactionManager.CurrentTransaction;
if (current.IsSerializing)
{
return;
}
if (Equals(e.NewValue, e.OldValue))
{
return;
}
List <string> errorMessages = EFCoreValidator.GetErrors(element).ToList();
switch (e.DomainProperty.Name)
{
case "DbSetName":
{
string newDbSetName = (string)e.NewValue;
if (element.IsDependentType)
{
if (!string.IsNullOrEmpty(newDbSetName))
{
element.DbSetName = string.Empty;
}
}
else
{
if (string.IsNullOrEmpty(newDbSetName))
{
element.DbSetName = MakeDefaultName(element.Name);
}
if (current.Name.ToLowerInvariant() != "paste" &&
(string.IsNullOrWhiteSpace(newDbSetName) || !CodeGenerator.IsValidLanguageIndependentIdentifier(newDbSetName)))
{
errorMessages.Add($"DbSet name '{newDbSetName}' isn't a valid .NET identifier.");
}
else if (store.Get <ModelClass>()
.Except(new[] { element })
.Any(x => x.DbSetName == newDbSetName))
{
errorMessages.Add($"DbSet name '{newDbSetName}' already in use");
}
}
break;
}
case "ImplementNotify":
{
bool newImplementNotify = (bool)e.NewValue;
if (newImplementNotify)
{
List <string> nameList = element.Attributes.Where(x => x.AutoProperty).Select(x => x.Name).ToList();
if (nameList.Any())
{
string names = nameList.Count > 1
? string.Join(", ", nameList.Take(nameList.Count - 1)) + " and " + nameList.Last()
: nameList.First();
string verb = nameList.Count > 1
? "is an autoproperty"
: "are autoproperties";
WarningDisplay.Show($"{names} {verb}, so will not participate in INotifyPropertyChanged messages");
}
}
PresentationHelper.UpdateClassDisplay(element);
break;
}
case "IsAbstract":
{
bool newIsAbstract = (bool)e.NewValue;
if (newIsAbstract && element.IsDependentType)
{
errorMessages.Add($"Can't make {element.Name} abstract since it's a dependent type");
break;
}
PresentationHelper.UpdateClassDisplay(element);
break;
}
case "IsDependentType":
{
bool newIsDependentType = (bool)e.NewValue;
if (newIsDependentType)
{
if (element.IsAbstract)
{
errorMessages.Add($"Can't make {element.Name} a dependent class since it's abstract");
break;
}
// dependent type can't be source in an association
if (store.Get <UnidirectionalAssociation>()
.Any(a => a.Source == element))
{
errorMessages.Add($"Can't make {element.Name} a dependent class since it references other classes");
break;
}
if (store.Get <BidirectionalAssociation>()
.Any(a => a.Source == element || a.Target == element))
{
errorMessages.Add($"Can't make {element.Name} a dependent class since it's in a bidirectional association");
break;
}
if (store.Get <Association>()
.Any(a => a.Target == element && a.TargetMultiplicity == Multiplicity.ZeroMany))
{
errorMessages.Add($"Can't make {element.Name} a dependent class since it's the target of a 0..* association");
break;
}
foreach (ModelAttribute modelAttribute in element.AllAttributes.Where(a => a.IsIdentity))
{
modelAttribute.IsIdentity = false;
}
foreach (UnidirectionalAssociation association in Association.GetLinksToTargets(element).OfType <UnidirectionalAssociation>())
{
if (association.SourceMultiplicity == Multiplicity.ZeroMany)
{
association.SourceMultiplicity = Multiplicity.ZeroOne;
}
if (association.TargetMultiplicity == Multiplicity.ZeroMany)
{
association.TargetMultiplicity = Multiplicity.ZeroOne;
}
association.TargetRole = EndpointRole.Dependent;
}
element.TableName = string.Empty;
element.DbSetName = string.Empty;
}
else
{
element.DbSetName = MakeDefaultName(element.Name);
element.TableName = MakeDefaultName(element.Name);
}
PresentationHelper.UpdateClassDisplay(element);
break;
}
case "Name":
{
string newName = (string)e.NewValue;
if (current.Name.ToLowerInvariant() != "paste" &&
(string.IsNullOrWhiteSpace(newName) || !CodeGenerator.IsValidLanguageIndependentIdentifier(newName)))
{
errorMessages.Add($"Class name '{newName}' isn't a valid .NET identifier.");
}
else if (store.ElementDirectory
.AllElements
.OfType <ModelClass>()
.Except(new[] { element })
.Any(x => x.Name == newName))
{
errorMessages.Add($"Class name '{newName}' already in use by another class");
}
else if (store.ElementDirectory
.AllElements
.OfType <ModelEnum>()
.Any(x => x.Name == newName))
{
errorMessages.Add($"Class name '{newName}' already in use by an enum");
}
else if (!string.IsNullOrEmpty((string)e.OldValue))
{
string oldDefaultName = MakeDefaultName((string)e.OldValue);
string newDefaultName = MakeDefaultName(newName);
if (element.DbSetName == oldDefaultName)
{
element.DbSetName = newDefaultName;
}
if (element.TableName == oldDefaultName)
{
element.TableName = newDefaultName;
}
}
break;
}
case "Namespace":
{
string newNamespace = (string)e.NewValue;
if (current.Name.ToLowerInvariant() != "paste")
{
errorMessages.Add(CommonRules.ValidateNamespace(newNamespace, CodeGenerator.IsValidLanguageIndependentIdentifier));
}
break;
}
case "TableName":
{
string newTableName = (string)e.NewValue;
if (element.IsDependentType)
{
if (!string.IsNullOrEmpty(newTableName))
{
element.TableName = string.Empty;
}
}
else
{
if (string.IsNullOrEmpty(newTableName))
{
element.TableName = MakeDefaultName(element.Name);
}
if (store.Get <ModelClass>()
.Except(new[] { element })
.Any(x => x.TableName == newTableName))
{
errorMessages.Add($"Table name '{newTableName}' already in use");
}
}
break;
}
}
errorMessages = errorMessages.Where(m => m != null).ToList();
if (errorMessages.Any())
{
current.Rollback();
ErrorDisplay.Show(string.Join("\n", errorMessages));
}
}
internal static void SetEndpointRoles(Association element)
{
switch (element.TargetMultiplicity)
{
case Multiplicity.ZeroMany:
switch (element.SourceMultiplicity)
{
case Multiplicity.ZeroMany:
element.SourceRole = EndpointRole.NotApplicable;
element.TargetRole = EndpointRole.NotApplicable;
break;
case Multiplicity.One:
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
break;
case Multiplicity.ZeroOne:
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
break;
}
break;
case Multiplicity.One:
switch (element.SourceMultiplicity)
{
case Multiplicity.ZeroMany:
element.SourceRole = EndpointRole.Dependent;
element.TargetRole = EndpointRole.Principal;
break;
case Multiplicity.One:
break;
case Multiplicity.ZeroOne:
element.SourceRole = EndpointRole.Dependent;
element.TargetRole = EndpointRole.Principal;
break;
}
break;
case Multiplicity.ZeroOne:
switch (element.SourceMultiplicity)
{
case Multiplicity.ZeroMany:
element.SourceRole = EndpointRole.Dependent;
element.TargetRole = EndpointRole.Principal;
break;
case Multiplicity.One:
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
break;
case Multiplicity.ZeroOne:
break;
}
break;
}
}
public override void ElementPropertyChanged(ElementPropertyChangedEventArgs e)
{
base.ElementPropertyChanged(e);
Association element = (Association)e.ModelElement;
Store store = element.Store;
Transaction current = store.TransactionManager.CurrentTransaction;
ModelRoot modelRoot = store.ElementDirectory.FindElements <ModelRoot>().FirstOrDefault();
if (current.IsSerializing)
{
return;
}
List <string> errorMessages = EFCoreValidator.GetErrors(element).ToList();
switch (e.DomainProperty.Name)
{
case "Persistent":
UpdateDisplayForPersistence(element);
break;
case "TargetPropertyName":
errorMessages.Add(ValidateAssociationIdentifier(element, element.Source, element.Target, (string)e.NewValue));
break;
case "SourcePropertyName":
errorMessages.Add(ValidateAssociationIdentifier(element, element.Target, element.Source, (string)e.NewValue));
break;
case "SourceMultiplicity":
Multiplicity newSourceMultiplicity = (Multiplicity)e.NewValue;
if ((newSourceMultiplicity == Multiplicity.One && element.TargetMultiplicity == Multiplicity.One) ||
(newSourceMultiplicity == Multiplicity.ZeroOne && element.TargetMultiplicity == Multiplicity.ZeroOne))
{
element.SourceRole = EndpointRole.NotSet;
element.TargetRole = EndpointRole.NotSet;
}
else
{
SetEndpointRoles(element);
}
UpdateDisplayForCascadeDelete(element, null, null, newSourceMultiplicity);
break;
case "TargetMultiplicity":
Multiplicity newTargetMultiplicity = (Multiplicity)e.NewValue;
if ((element.SourceMultiplicity == Multiplicity.One && newTargetMultiplicity == Multiplicity.One) ||
(element.SourceMultiplicity == Multiplicity.ZeroOne && newTargetMultiplicity == Multiplicity.ZeroOne))
{
element.SourceRole = EndpointRole.NotSet;
element.TargetRole = EndpointRole.NotSet;
}
else
{
SetEndpointRoles(element);
}
UpdateDisplayForCascadeDelete(element, null, null, null, newTargetMultiplicity);
break;
case "SourceRole":
EndpointRole newSourceRole = (EndpointRole)e.NewValue;
if (element.TargetRole == EndpointRole.NotSet && newSourceRole == EndpointRole.Dependent)
{
element.TargetRole = EndpointRole.Principal;
}
else if (element.TargetRole == EndpointRole.NotSet && newSourceRole == EndpointRole.Principal)
{
element.TargetRole = EndpointRole.Dependent;
}
break;
case "TargetRole":
EndpointRole newTargetRole = (EndpointRole)e.NewValue;
if (element.SourceRole == EndpointRole.NotSet && newTargetRole == EndpointRole.Dependent)
{
element.SourceRole = EndpointRole.Principal;
}
else if (element.SourceRole == EndpointRole.NotSet && newTargetRole == EndpointRole.Principal)
{
element.SourceRole = EndpointRole.Dependent;
}
break;
case "SourceDeleteAction":
DeleteAction sourceDeleteAction = (DeleteAction)e.NewValue;
UpdateDisplayForCascadeDelete(element, sourceDeleteAction);
break;
case "TargetDeleteAction":
DeleteAction targetDeleteAction = (DeleteAction)e.NewValue;
UpdateDisplayForCascadeDelete(element, null, targetDeleteAction);
break;
}
errorMessages = errorMessages.Where(m => m != null).ToList();
if (errorMessages.Any())
{
current.Rollback();
MessageBox.Show(string.Join("; ", errorMessages));
}
}
public static void AdjustEFCoreProperties(PropertyDescriptorCollection propertyDescriptors, Association element)
{
ModelRoot modelRoot = element.Source.ModelRoot;
for (int index = 0; index < propertyDescriptors.Count; index++)
{
bool shouldRemove = false;
switch (propertyDescriptors[index].Name)
{
case "TargetPersistencePoint":
shouldRemove = element.TargetAutoProperty || modelRoot.EntityFrameworkVersion == EFVersion.EF6;
break;
case "SourcePersistencePoint":
if (element is BidirectionalAssociation bidirectionalAssociation)
{
shouldRemove = bidirectionalAssociation.SourceAutoProperty || modelRoot.EntityFrameworkVersion == EFVersion.EF6;
}
break;
default:
break;
}
if (shouldRemove)
{
propertyDescriptors.Remove(propertyDescriptors[index--]);
}
}
}
public override void ElementPropertyChanged(ElementPropertyChangedEventArgs e)
{
base.ElementPropertyChanged(e);
Association element = (Association)e.ModelElement;
Store store = element.Store;
Transaction current = store.TransactionManager.CurrentTransaction;
if (current.IsSerializing)
{
return;
}
if (Equals(e.NewValue, e.OldValue))
{
return;
}
List <string> errorMessages = EFCoreValidator.GetErrors(element).ToList();
switch (e.DomainProperty.Name)
{
case "Persistent":
UpdateDisplayForPersistence(element);
break;
case "SourceDeleteAction":
DeleteAction sourceDeleteAction = (DeleteAction)e.NewValue;
UpdateDisplayForCascadeDelete(element, sourceDeleteAction);
break;
case "SourceMultiplicity":
Multiplicity sourceMultiplicity = (Multiplicity)e.NewValue;
// change unidirectional source cardinality
// if target is dependent
// source cardinality is 0..1 or 1
if (element.Target.IsDependentType && sourceMultiplicity == Multiplicity.ZeroMany)
{
errorMessages.Add($"Can't have a 0..* association from {element.Target.Name} to dependent type {element.Source.Name}");
break;
}
if ((sourceMultiplicity == Multiplicity.One && element.TargetMultiplicity == Multiplicity.One) ||
(sourceMultiplicity == Multiplicity.ZeroOne && element.TargetMultiplicity == Multiplicity.ZeroOne))
{
if (element.SourceRole != EndpointRole.NotSet)
{
element.SourceRole = EndpointRole.NotSet;
}
if (element.TargetRole != EndpointRole.NotSet)
{
element.TargetRole = EndpointRole.NotSet;
}
}
else
{
SetEndpointRoles(element);
}
UpdateDisplayForCascadeDelete(element, null, null, sourceMultiplicity);
break;
case "SourcePropertyName":
string sourcePropertyNameErrorMessage = ValidateAssociationIdentifier(element, element.Target, (string)e.NewValue);
if (EFModelDiagram.IsDropping && sourcePropertyNameErrorMessage != null)
{
element.Delete();
}
else
{
errorMessages.Add(sourcePropertyNameErrorMessage);
}
break;
case "SourceRole":
if (element.Source.IsDependentType)
{
element.SourceRole = EndpointRole.Dependent;
element.TargetRole = EndpointRole.Principal;
}
else
{
EndpointRole sourceRole = (EndpointRole)e.NewValue;
if (sourceRole == EndpointRole.Dependent && element.TargetRole != EndpointRole.Principal)
{
element.TargetRole = EndpointRole.Principal;
}
else if (sourceRole == EndpointRole.Principal && element.TargetRole != EndpointRole.Dependent)
{
element.TargetRole = EndpointRole.Dependent;
}
SetEndpointRoles(element);
}
break;
case "TargetDeleteAction":
DeleteAction targetDeleteAction = (DeleteAction)e.NewValue;
UpdateDisplayForCascadeDelete(element, null, targetDeleteAction);
break;
case "TargetMultiplicity":
Multiplicity newTargetMultiplicity = (Multiplicity)e.NewValue;
// change unidirectional target cardinality
// if target is dependent
// target cardinality must be 0..1 or 1
if (element.Target.IsDependentType && newTargetMultiplicity == Multiplicity.ZeroMany)
{
errorMessages.Add($"Can't have a 0..* association from {element.Source.Name} to dependent type {element.Target.Name}");
break;
}
if ((element.SourceMultiplicity == Multiplicity.One && newTargetMultiplicity == Multiplicity.One) ||
(element.SourceMultiplicity == Multiplicity.ZeroOne && newTargetMultiplicity == Multiplicity.ZeroOne))
{
if (element.SourceRole != EndpointRole.NotSet)
{
element.SourceRole = EndpointRole.NotSet;
}
if (element.TargetRole != EndpointRole.NotSet)
{
element.TargetRole = EndpointRole.NotSet;
}
}
else
{
SetEndpointRoles(element);
}
UpdateDisplayForCascadeDelete(element, null, null, null, newTargetMultiplicity);
break;
case "TargetPropertyName":
// if we're creating an association via drag/drop, it's possible the existing property name
// is the same as the default property name. The default doesn't get created until the transaction is
// committed, so the drop's action will cause a name clash. Remove the clashing property, but
// only if drag/drop.
string targetPropertyNameErrorMessage = ValidateAssociationIdentifier(element, element.Source, (string)e.NewValue);
if (EFModelDiagram.IsDropping && targetPropertyNameErrorMessage != null)
{
element.Delete();
}
else
{
errorMessages.Add(targetPropertyNameErrorMessage);
}
break;
case "TargetRole":
if (element.Target.IsDependentType)
{
element.SourceRole = EndpointRole.Principal;
element.TargetRole = EndpointRole.Dependent;
}
else
{
EndpointRole targetRole = (EndpointRole)e.NewValue;
if (targetRole == EndpointRole.Dependent && element.SourceRole != EndpointRole.Principal)
{
element.SourceRole = EndpointRole.Principal;
}
else if (targetRole == EndpointRole.Principal && element.SourceRole != EndpointRole.Dependent)
{
element.SourceRole = EndpointRole.Dependent;
}
SetEndpointRoles(element);
}
break;
}
errorMessages = errorMessages.Where(m => m != null).ToList();
if (errorMessages.Any())
{
current.Rollback();
ErrorDisplay.Show(string.Join("\n", errorMessages));
}
}