public static Dictionary <string, string> GetLookupPropertiesMappingDictionary(this Edmx edmx, Type entityClrType)
{
string entityName = entityClrType.Name;
Dictionary <string, string> mappingDictionary = new Dictionary <string, string>();
foreach (NavigationProperty navigationProperty in edmx.GetLookupProperties(entityClrType))
{
string relationship = GetAdjustedText(navigationProperty.Relationship);
string fromRole = navigationProperty.FromRole;
string toRole = navigationProperty.ToRole;
LinqToEdmx.Model.Conceptual.Association association = edmx.GetConceptualAssociation(relationship);
LinqToEdmx.Model.Conceptual.AssociationEnd fromAssociation = edmx.GetConceptualAssociationEnd(relationship, fromRole);
LinqToEdmx.Model.Conceptual.AssociationEnd toAssociation = edmx.GetConceptualAssociationEnd(relationship, toRole);
AssociationSetMapping entityTypesMappingAssociation = edmx.GetMappingAssociationSet(entityName, relationship);
foreach (EndProperty endProperty in entityTypesMappingAssociation.EndProperties)
{
if (endProperty.Name == toRole)
{
string columnName = endProperty.ScalarProperties[0].ColumnName;
mappingDictionary.Add(navigationProperty.Name, columnName);
}
}
}
return(mappingDictionary);
}
public static EndProperty GetParentChildRelationEndProperty(this Edmx edmx, string parentEntityName, string childPropertyName)
{
NavigationProperty navigationProperty = edmx.GetNavigationProperty(parentEntityName, childPropertyName);
string relationship = GetAdjustedText(navigationProperty.Relationship);
string fromRole = navigationProperty.FromRole;
string toRole = navigationProperty.ToRole;
LinqToEdmx.Model.Conceptual.Association association = edmx.GetConceptualAssociation(relationship);
LinqToEdmx.Model.Conceptual.AssociationEnd fromAssociation = edmx.GetConceptualAssociationEnd(relationship, fromRole);
LinqToEdmx.Model.Conceptual.AssociationEnd toAssociation = edmx.GetConceptualAssociationEnd(relationship, toRole);
string childEntityName = GetAdjustedText(toAssociation.Type);
AssociationSetMapping entityTypesMappingAssociation = edmx.GetMappingAssociationSet(childEntityName, relationship);
return(entityTypesMappingAssociation.EndProperties.Where(e => e.Name == fromRole).Single());
}
private AssociationEnd CreateConceptualAssociationEnd(IEntity entity, string role, LinqToEdmx.Model.Conceptual.Association assocication, bool isCascadeDelete)
{
// <End Role="Category" Type="PetShopModel1.Category" Multiplicity="1">
// <OnDelete Action="Cascade" />
// </End>
// <End Role="Product" Type="PetShopModel1.Product" Multiplicity="*" />
var end = new AssociationEnd()
{
Role = role,
Type = String.Concat(ConceptualSchema.Namespace, ".", ResolveEntityMappedName(entity.EntityKey(), entity.Name))
};
if (isCascadeDelete)
{
end.OnDelete.Add(new OnAction() { Action = EdmxConstants.OnDeleteActionCascade });
}
assocication.Ends.Add(end);
return end;
}
private static void UpdateConceptualAssociationEndMultiplicity(IAssociation association, AssociationEnd principalEnd, AssociationEnd dependentEnd)
{
switch (association.AssociationType)
{
case AssociationType.OneToMany:
principalEnd.Multiplicity = MultiplicityConstants.One;
dependentEnd.Multiplicity = MultiplicityConstants.Many;
break;
case AssociationType.OneToOne:
principalEnd.Multiplicity = MultiplicityConstants.One;
dependentEnd.Multiplicity = MultiplicityConstants.One;
break;
case AssociationType.OneToZeroOrOne:
principalEnd.Multiplicity = MultiplicityConstants.One;
dependentEnd.Multiplicity = MultiplicityConstants.ZeroToOne;
break;
case AssociationType.ZeroOrOneToMany:
case AssociationType.ManyToZeroOrOne:
principalEnd.Multiplicity = MultiplicityConstants.ZeroToOne;
dependentEnd.Multiplicity = MultiplicityConstants.Many;
break;
case AssociationType.ManyToMany:
principalEnd.Multiplicity = MultiplicityConstants.Many;
dependentEnd.Multiplicity = MultiplicityConstants.Many;
break;
default:
principalEnd.Multiplicity = MultiplicityConstants.One;
dependentEnd.Multiplicity = MultiplicityConstants.Many;
break;
}
}
