internal void RemoveRole(DynamicObject association, IDynamicRoleType roleType, DynamicObject role)
{
IDynamicAssociationType associationType = roleType.AssociationType;
this.GetAssociation(role, associationType, out object previousAssociation);
this.GetRole(association, roleType, out object previousRole);
if (previousRole != null)
{
// Role
var changedRoleByAssociation = this.ChangedRoleByAssociation(roleType);
changedRoleByAssociation[association] = NullableArraySet.Remove(previousRole, role);
// Association
var changedAssociationByRole = this.ChangedAssociationByRole(associationType);
if (associationType.IsOne)
{
// One to Many
changedAssociationByRole[role] = null;
}
else
{
// Many to Many
changedAssociationByRole[role] = NullableArraySet.Add(previousAssociation, association);
}
}
}
internal void AddRole(DynamicObject association, IDynamicRoleType roleType, DynamicObject role)
{
IDynamicAssociationType associationType = roleType.AssociationType;
this.GetAssociation(role, associationType, out object previousAssociation);
// Role
var changedRoleByAssociation = this.ChangedRoleByAssociation(roleType);
this.GetRole(association, roleType, out object previousRole);
DynamicObject[] roleArray = (DynamicObject[])previousRole;
roleArray = NullableArraySet.Add(roleArray, role);
changedRoleByAssociation[association] = roleArray;
// Association
var changedAssociationByRole = this.ChangedAssociationByRole(associationType);
if (associationType.IsOne)
{
// One to Many
DynamicObject previousAssociationObject = (DynamicObject)previousAssociation;
if (previousAssociationObject != null)
{
this.GetRole(previousAssociationObject, roleType, out object previousAssociationRole);
changedRoleByAssociation[previousAssociationObject] = NullableArraySet.Remove(previousAssociationRole, role);
}
changedAssociationByRole[role] = association;
}
else
{
// Many to Many
changedAssociationByRole[role] = NullableArraySet.Add(previousAssociation, association);
}
}
internal void SetRole(dynamic association, IDynamicRoleType roleType, object role)
{
var normalizedRole = roleType.Normalize(role);
if (roleType.IsUnit)
{
// Role
this.ChangedRoleByAssociation(roleType)[association] = normalizedRole;
}
else
{
var associationType = roleType.AssociationType;
this.GetRole(association, roleType, out object previousRole);
if (roleType.IsOne)
{
var roleObject = (DynamicObject)normalizedRole;
this.GetAssociation(roleObject, associationType, out object previousAssociation);
// Role
var changedRoleByAssociation = this.ChangedRoleByAssociation(roleType);
changedRoleByAssociation[association] = roleObject;
// Association
var changedAssociationByRole = this.ChangedAssociationByRole(associationType);
if (associationType.IsOne)
{
// One to One
var previousAssociationObject = (DynamicObject)previousAssociation;
if (previousAssociationObject != null)
{
changedRoleByAssociation[previousAssociationObject] = null;
}
if (previousRole != null)
{
var previousRoleObject = (DynamicObject)previousRole;
changedAssociationByRole[previousRoleObject] = null;
}
changedAssociationByRole[roleObject] = association;
}
else
{
changedAssociationByRole[roleObject] = NullableArraySet.Remove(previousAssociation, roleObject);
}
}
else
{
DynamicObject[] roles = ((IEnumerable <DynamicObject>)normalizedRole)?.ToArray() ?? Array.Empty <DynamicObject>();
DynamicObject[] previousRoles = (DynamicObject[])previousRole ?? Array.Empty <DynamicObject>();
// Use Diff (Add/Remove)
IEnumerable <DynamicObject> addedRoles = roles.Except(previousRoles);
IEnumerable <DynamicObject> removedRoles = previousRoles.Except(roles);
foreach (DynamicObject addedRole in addedRoles)
{
this.AddRole(association, roleType, addedRole);
}
foreach (DynamicObject removeRole in removedRoles)
{
this.RemoveRole(association, roleType, removeRole);
}
}
}
}
internal void AddObject(DynamicObject newObject)
{
this.Objects = NullableArraySet.Add(this.Objects, newObject);
}