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 void CreateConceptualAssociation(IAssociation association)
{
IEntity principalEntity;
IEntity dependentEntity;
bool isParentEntity;
string key;
string toRole;
string fromRole;
ResolveConceptualAssociationValues(association, out principalEntity, out dependentEntity, out isParentEntity, out key, out toRole, out fromRole);
if (_conceptualAssociations.Contains(key))
return;
//<Association Name="FK__Product__Categor__0CBAE877">
// <End Role="Category" Type="PetShopModel1.Category" Multiplicity="1" />
// <End Role="Product" Type="PetShopModel1.Product" Multiplicity="*" />
// <ReferentialConstraint>
// <Principal Role="Category">
// <PropertyRef Name="CategoryId" />
// </Principal>
// <Dependent Role="Product">
// <PropertyRef Name="CategoryId" />
// </Dependent>
// </ReferentialConstraint>
//</Association>
var assoc = ConceptualSchema.Associations.Where(a => a.Name.Equals(key)).FirstOrDefault();
if (assoc != null) ConceptualSchema.Associations.Remove(assoc);
assoc = new LinqToEdmx.Model.Conceptual.Association()
{
Name = key,
Ends = new List<AssociationEnd>()
};
ConceptualSchema.Associations.Add(assoc);
var principalEnd = CreateConceptualAssociationEnd(principalEntity, toRole, assoc, false);
var dependentEnd = CreateConceptualAssociationEnd(dependentEntity, fromRole, assoc, false);
UpdateConceptualAssociationEndMultiplicity(association, principalEnd, dependentEnd);
#region ReferentialConstraint
if (!association.IsParentManyToMany())
{
assoc.ReferentialConstraint = new Constraint
{
Principal = new ReferentialConstraintRoleElement() { Role = toRole },
Dependent = new ReferentialConstraintRoleElement() { Role = fromRole }
};
CreateStorageAssociationReferentialConstraintProperties(assoc, association.Properties, principalEntity, dependentEntity, false);
}
#endregion
_conceptualAssociations.Add(key);
}
public static LinqToEdmx.Model.Conceptual.AssociationEnd GetConceptualAssociationEnd(this Edmx edmx, string relationship, string role)
{
LinqToEdmx.Model.Conceptual.Association association = edmx.GetConceptualAssociation(relationship);
return(association.Ends.Where(e => e.Role == role).Single());
}
