public override void ElementPropertyChanged(ElementPropertyChangedEventArgs e)
{
base.ElementPropertyChanged(e);
ModelAttribute element = (ModelAttribute)e.ModelElement;
if (element.IsDeleted)
{
return;
}
ModelClass modelClass = element.ModelClass;
ModelRoot modelRoot = element.Store.ModelRoot();
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();
switch (e.DomainProperty.Name)
{
case "AutoProperty":
{
if (element.AutoProperty)
{
element.PersistencePoint = PersistencePointType.Property;
element.ImplementNotify = false;
}
}
break;
case "IdentityType":
{
if (element.IsIdentity)
{
if (element.IdentityType == IdentityType.None)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: Identity properties must have an identity type defined");
}
}
else
{
element.IdentityType = IdentityType.None;
}
}
break;
case "ImplementNotify":
{
if (element.IsIdentity)
{
element.ImplementNotify = false;
}
if (element.ImplementNotify)
{
element.AutoProperty = false;
}
}
break;
case "Indexed":
{
if (element.IsIdentity)
{
element.Indexed = true;
}
if (element.IsConcurrencyToken)
{
element.Indexed = false;
}
if (element.Indexed)
{
element.Persistent = true;
}
}
break;
case "InitialValue":
{
string newInitialValue = (string)e.NewValue;
// if the property is an Enum and the user just typed the name of the Enum value without the Enum type name, help them out
if (element.ModelClass.ModelRoot.Enums.Any(x => x.Name == element.Type) && !newInitialValue.Contains("."))
{
newInitialValue = element.InitialValue = $"{element.Type}.{newInitialValue}";
}
if (!element.IsValidInitialValue(null, newInitialValue))
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: {newInitialValue} isn't a valid value for {element.Type}");
}
}
break;
case "IsConcurrencyToken":
{
bool newIsConcurrencyToken = (bool)e.NewValue;
if (newIsConcurrencyToken)
{
element.IsIdentity = false;
element.Persistent = true;
element.Required = true;
element.Type = "Binary";
}
}
break;
case "IsIdentity":
{
bool newIsIdentity = (bool)e.NewValue;
if (newIsIdentity)
{
if (element.ModelClass.IsDependentType)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: Can't make {element.Name} an identity because {modelClass.Name} is a dependent type and can't have an identity property.");
}
else
{
if (!modelRoot.ValidIdentityAttributeTypes.Contains(element.Type))
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: Properties of type {element.Type} can't be used as identity properties.");
}
else
{
element.IsConcurrencyToken = false;
element.Indexed = true;
element.IndexedUnique = true;
element.Persistent = true;
element.Required = true;
if (element.IdentityType == IdentityType.None)
{
element.IdentityType = IdentityType.AutoGenerated;
}
}
}
}
else
{
element.IdentityType = IdentityType.None;
}
}
break;
case "MinLength":
{
int minLengthValue = (int)e.NewValue;
if (element.Type != "String")
{
element.MinLength = 0;
}
else if (minLengthValue < 0)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: MinLength must be zero or a positive number");
}
else if (element.MaxLength > 0 && minLengthValue > element.MaxLength)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: MinLength cannot be greater than MaxLength");
}
}
break;
case "MaxLength":
{
if (element.Type != "String")
{
element.MaxLength = null;
}
else
{
int?maxLengthValue = (int?)e.NewValue;
if (maxLengthValue > 0 && element.MinLength > maxLengthValue)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: MinLength cannot be greater than MaxLength");
}
}
}
break;
case "Name":
{
string newName = (string)e.NewValue;
if (string.IsNullOrEmpty(newName))
{
errorMessages.Add("Name must be a valid .NET identifier");
}
else
{
ParseResult fragment;
try
{
fragment = ModelAttribute.Parse(modelRoot, newName);
if (fragment == null)
{
errorMessages.Add($"{modelClass.Name}: Could not parse entry '{newName}'");
}
else
{
if (string.IsNullOrEmpty(fragment.Name) || !CodeGenerator.IsValidLanguageIndependentIdentifier(fragment.Name))
{
errorMessages.Add($"{modelClass.Name}: Property name '{fragment.Name}' isn't a valid .NET identifier");
}
else if (modelClass.AllAttributes.Except(new[] { element }).Any(x => x.Name == fragment.Name))
{
errorMessages.Add($"{modelClass.Name}: Property name '{fragment.Name}' already in use");
}
else if (modelClass.AllNavigationProperties().Any(p => p.PropertyName == fragment.Name))
{
errorMessages.Add($"{modelClass.Name}: Property name '{fragment.Name}' already in use");
}
else
{
element.Name = fragment.Name;
if (fragment.Type != null)
{
element.Type = fragment.Type;
}
if (fragment.Required != null)
{
element.Required = fragment.Required.Value;
}
element.MaxLength = fragment.MaxLength;
element.MinLength = fragment.MinLength ?? 0;
if (fragment.InitialValue != null)
{
element.InitialValue = fragment.InitialValue;
}
if (fragment.IsIdentity)
{
element.IsIdentity = true; // don't reset to false if not entered as part of name
}
}
}
}
catch (Exception exception)
{
errorMessages.Add($"{modelClass.Name}: Could not parse entry '{newName}': {exception.Message}");
}
}
}
break;
case "PersistencePoint":
{
if ((PersistencePointType)e.NewValue == PersistencePointType.Field)
{
element.AutoProperty = false;
}
}
break;
case "Persistent":
{
bool newPersistent = (bool)e.NewValue;
if (!newPersistent)
{
element.IsIdentity = false;
element.Indexed = false;
element.IndexedUnique = false;
element.IdentityType = IdentityType.None;
element.IsConcurrencyToken = false;
element.Virtual = false;
}
}
break;
case "ReadOnly":
{
if (!element.Persistent || element.SetterVisibility != SetterAccessModifier.Public)
{
element.ReadOnly = false;
}
}
break;
case "Required":
{
bool newRequired = (bool)e.NewValue;
if (!newRequired)
{
if (element.IsIdentity || element.IsConcurrencyToken)
{
element.Required = true;
}
}
}
break;
case "Type":
{
string newType = (string)e.NewValue;
if (element.IsIdentity)
{
if (!modelRoot.ValidIdentityAttributeTypes.Contains(ModelAttribute.ToCLRType(newType)))
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: Properties of type {newType} can't be used as identity properties.");
}
else
{
element.Required = true;
element.Persistent = true;
}
}
if (newType != "String")
{
element.MaxLength = null;
element.MinLength = 0;
element.StringType = HTML5Type.None;
}
else
{
if (!element.IsValidInitialValue(newType))
{
element.InitialValue = null;
}
}
if (element.IsConcurrencyToken)
{
element.Type = "Binary";
}
if (!element.SupportsInitialValue)
{
element.InitialValue = null;
}
}
break;
}
errorMessages = errorMessages.Where(m => m != null).ToList();
if (errorMessages.Any())
{
current.Rollback();
ErrorDisplay.Show(string.Join("\n", errorMessages));
}
}
/// <inheritdoc />
public override void ElementPropertyChanged(ElementPropertyChangedEventArgs e)
{
base.ElementPropertyChanged(e);
ModelAttribute element = (ModelAttribute)e.ModelElement;
if (element.IsDeleted)
{
return;
}
ModelClass modelClass = element.ModelClass;
ModelRoot modelRoot = element.Store.ModelRoot();
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 = new List <string>();
switch (e.DomainProperty.Name)
{
case "AutoProperty":
{
if (element.AutoProperty)
{
//element.PersistencePoint = PersistencePointType.Property;
element.ImplementNotify = false;
}
else
{
if (string.IsNullOrEmpty(element.BackingFieldName))
{
element.BackingFieldName = $"_{element.Name.ToCamelCase()}";
}
}
}
break;
case "IdentityType":
{
if (element.IsIdentity)
{
if (element.IdentityType == IdentityType.None)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: Identity properties must have an identity type defined");
}
foreach (Association association in element.ModelClass.LocalNavigationProperties()
.Where(nav => nav.AssociationObject.Dependent == element.ModelClass)
.Select(nav => nav.AssociationObject)
.Where(a => !string.IsNullOrWhiteSpace(a.FKPropertyName) &&
a.FKPropertyName.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Any(n => n.Trim() == element.Name)))
{
foreach (ModelAttribute attribute in association.GetFKAutoIdentityErrors())
{
errorMessages.Add($"{association.Source.Name} <=> {association.Target.Name}: FK property {attribute.Name} in {association.Dependent.FullName} is an auto-generated identity. Migration will fail.");
}
}
}
else
{
element.IdentityType = IdentityType.None;
}
}
break;
case "ImplementNotify":
{
if (element.IsIdentity)
{
element.ImplementNotify = false;
}
if (element.ImplementNotify)
{
element.AutoProperty = false;
}
}
break;
case "Indexed":
{
if (element.IsIdentity)
{
element.Indexed = true;
}
if (element.IsConcurrencyToken)
{
element.Indexed = false;
}
if (element.Indexed)
{
element.Persistent = true;
}
}
break;
case "InitialValue":
{
string newInitialValue = (string)e.NewValue;
if (string.IsNullOrEmpty(newInitialValue))
{
break;
}
// if the property is an Enum and the user just typed the name of the Enum value without the Enum type name, help them out
if (element.ModelClass.ModelRoot.Enums.Any(x => x.Name == element.Type) && !newInitialValue.Contains("."))
{
newInitialValue = element.InitialValue = $"{element.Type}.{newInitialValue}";
}
if (!element.IsValidInitialValue(null, newInitialValue))
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: {newInitialValue} isn't a valid value for {element.Type}");
}
}
break;
case "IsAbstract":
{
if ((bool)e.NewValue)
{
modelClass.IsAbstract = true;
}
}
break;
case "IsConcurrencyToken":
{
bool newIsConcurrencyToken = (bool)e.NewValue;
if (newIsConcurrencyToken)
{
element.IsIdentity = false;
element.Persistent = true;
element.Required = true;
element.Type = "Binary";
}
}
break;
case "IsIdentity":
{
if ((bool)e.NewValue)
{
if (element.ModelClass.IsDependentType)
{
if (!modelRoot.IsEFCore5Plus)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: Can't make {element.Name} an identity because {modelClass.Name} is a dependent type and can't have an identity property.");
}
}
else
{
if (!modelRoot.IsValidIdentityAttributeType(element.Type))
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: Properties of type {element.Type} can't be used as identity properties.");
}
else
{
element.IsConcurrencyToken = false;
element.Indexed = true;
element.IndexedUnique = true;
element.Persistent = true;
element.Required = true;
if (element.IdentityType == IdentityType.None)
{
element.IdentityType = IdentityType.AutoGenerated;
}
}
}
foreach (Association association in element.ModelClass.LocalNavigationProperties()
.Where(nav => nav.AssociationObject.Dependent == element.ModelClass)
.Select(nav => nav.AssociationObject)
.Where(a => !string.IsNullOrWhiteSpace(a.FKPropertyName) &&
a.FKPropertyName.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Any(n => n.Trim() == element.Name)))
{
association.GetFKAutoIdentityErrors();
}
}
else
{
element.IdentityType = IdentityType.None;
}
}
break;
case "MinLength":
{
int minLengthValue = (int)e.NewValue;
if (element.Type != "String")
{
element.MinLength = 0;
}
else if (minLengthValue < 0)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: MinLength must be zero or a positive number");
}
else if (element.MaxLength > 0 && minLengthValue > element.MaxLength)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: MinLength cannot be greater than MaxLength");
}
}
break;
case "MaxLength":
{
if (element.Type != "String")
{
element.MaxLength = null;
}
else
{
int?maxLengthValue = (int?)e.NewValue;
if (maxLengthValue > 0 && element.MinLength > maxLengthValue)
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: MinLength cannot be greater than MaxLength");
}
}
}
break;
case "Name":
{
if (string.IsNullOrEmpty(element.Name) || !CodeGenerator.IsValidLanguageIndependentIdentifier(element.Name))
{
errorMessages.Add($"{modelClass.Name}: Property name '{element.Name}' isn't a valid .NET identifier");
}
if (modelClass.AllAttributes.Except(new[] { element }).Any(x => x.Name == element.Name) ||
modelClass.AllNavigationProperties().Any(p => p.PropertyName == element.Name))
{
errorMessages.Add($"{modelClass.Name}: Property name '{element.Name}' already in use");
}
}
break;
case "Persistent":
{
bool newPersistent = (bool)e.NewValue;
if (!newPersistent)
{
element.IsIdentity = false;
element.Indexed = false;
element.IndexedUnique = false;
element.IdentityType = IdentityType.None;
element.IsConcurrencyToken = false;
element.Virtual = false;
}
}
break;
case "ReadOnly":
{
if (!element.Persistent || element.SetterVisibility != SetterAccessModifier.Public)
{
element.ReadOnly = false;
}
}
break;
case "Required":
{
bool newRequired = (bool)e.NewValue;
if (!newRequired)
{
if (element.IsIdentity || element.IsConcurrencyToken)
{
element.Required = true;
}
}
}
break;
case "Type":
{
string newType = (string)e.NewValue;
if (element.IsIdentity)
{
if (!modelRoot.IsValidIdentityAttributeType(ModelAttribute.ToCLRType(newType)))
{
errorMessages.Add($"{modelClass.Name}.{element.Name}: Properties of type {newType} can't be used as identity properties.");
}
else
{
element.Required = true;
element.Persistent = true;
// Change type of any foreign key pointing to this class
IEnumerable <Association> participatingAssociations =
element.ModelClass.LocalNavigationProperties()
.Where(nav => nav.AssociationObject.Dependent == element.ModelClass)
.Select(nav => nav.AssociationObject)
.Where(a => !string.IsNullOrWhiteSpace(a.FKPropertyName) &&
a.FKPropertyName.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Any(n => n.Trim() == element.Name));
foreach (Association association in participatingAssociations)
{
AssociationChangedRules.FixupForeignKeys(association);
}
}
}
if (newType != "String")
{
element.MaxLength = null;
element.MinLength = 0;
element.StringType = HTML5Type.None;
}
else
{
if (!element.IsValidInitialValue(newType))
{
element.InitialValue = null;
}
}
if (element.IsConcurrencyToken)
{
element.Type = "Binary";
}
if (!element.SupportsInitialValue)
{
element.InitialValue = null;
}
}
break;
}
errorMessages = errorMessages.Where(m => m != null).ToList();
if (errorMessages.Any())
{
current.Rollback();
ErrorDisplay.Show(store, string.Join("\n", errorMessages));
}
}
