private EmployeeRole AttachWithRelations(EmployeeRole entity, InsertMode insertMode = InsertMode.Attach, MergeOption mergeOption = MergeOption.AppendOnly, List <object> referenceTrackingList = null)
{
#region iteration tracking
if (ReferenceEquals(null, referenceTrackingList))
{
referenceTrackingList = new List <object>();
}
if (referenceTrackingList.Contains(entity))
{
return(_employeeRoles.GetExisting(entity));
}
else
{
referenceTrackingList.Add(entity);
}
#endregion
#region add/attach entity
EmployeeRole existingEntity = null;
switch (insertMode)
{
case InsertMode.Add:
existingEntity = _employeeRoles.Add(entity);
break;
case InsertMode.Attach:
existingEntity = _employeeRoles.Attach(entity);
break;
default:
throw new Exception(string.Format("Implementation Exception: missing action for {0}", insertMode));
}
if (!ReferenceEquals(null, existingEntity) && ReferenceEquals(existingEntity, entity))
{
return(existingEntity);
}
#endregion
#region attach relations recursively
if (!ReferenceEquals(null, entity.Employees))
{
// register relation's collection changed event if entity is new to context
if (ReferenceEquals(null, existingEntity))
{
entity.Employees.CollectionChanged += On_employeeRole_employees_collectionChanged;
}
// attach related entities to context
if (entity.Employees.Count > 0)
{
foreach (var item in entity.Employees.ToArray())
{
var existingRelatedEntity = (Employee)AttachWithRelations(item, insertMode, mergeOption, referenceTrackingList);
// update relation if entity is new to context or relation is new to entity
if (ReferenceEquals(null, existingEntity) || !existingEntity.Employees.Contains(item))
{
if (!ReferenceEquals(null, existingRelatedEntity) && !ReferenceEquals(existingRelatedEntity, item))
{
// check merge options
if (!(mergeOption == MergeOption.PreserveChanges && existingRelatedEntity.ChangeTracker.OriginalValues.ContainsKey("EmployeeRole")))
{
using (entity.ChangeTrackingPrevention())
{
entity.Employees.Replace(item, existingRelatedEntity);
}
using (existingRelatedEntity.ChangeTrackingPrevention())
{
existingRelatedEntity.EmployeeRole = entity;
}
}
}
}
}
}
}
#endregion
#region refresh existing entity based on merge options
if (!ReferenceEquals(null, existingEntity) && !ReferenceEquals(existingEntity, entity))
{
if (EmployeeRoles.MergeOption == MergeOption.OverwriteChanges)
{
Invoke(delegate
{
existingEntity.Refresh(entity, trackChanges: false);
existingEntity.AcceptChanges();
});
}
else if (EmployeeRoles.MergeOption == MergeOption.PreserveChanges)
{
Invoke(delegate
{
existingEntity.Refresh(entity, trackChanges: false, preserveExistingChanges: true);
});
}
}
#endregion
return(existingEntity);
}
private Product AttachWithRelations(Product entity, InsertMode insertMode = InsertMode.Attach, MergeOption mergeOption = MergeOption.AppendOnly, List <object> referenceTrackingList = null)
{
#region iteration tracking
if (ReferenceEquals(null, referenceTrackingList))
{
referenceTrackingList = new List <object>();
}
if (referenceTrackingList.Contains(entity))
{
return(_products.GetExisting(entity));
}
else
{
referenceTrackingList.Add(entity);
}
#endregion
#region add/attach entity
Product existingEntity = null;
switch (insertMode)
{
case InsertMode.Add:
existingEntity = _products.Add(entity);
break;
case InsertMode.Attach:
existingEntity = _products.Attach(entity);
break;
default:
throw new Exception(string.Format("Implementation Exception: missing action for {0}", insertMode));
}
if (!ReferenceEquals(null, existingEntity) && ReferenceEquals(existingEntity, entity))
{
return(existingEntity);
}
#endregion
#region attach relations recursively
// register entity's property changed event if entity is new to context
if (ReferenceEquals(null, existingEntity))
{
entity.PropertyChanged += On_product_propertyChanged;
}
// attach related entity to context
if (!ReferenceEquals(null, entity.ProductCategory))
{
var existingRelatedEntity = AttachWithRelations(entity.ProductCategory, insertMode, mergeOption, referenceTrackingList);
}
#endregion
#region refresh existing entity based on merge options
if (!ReferenceEquals(null, existingEntity) && !ReferenceEquals(existingEntity, entity))
{
if (Products.MergeOption == MergeOption.OverwriteChanges)
{
Invoke(delegate
{
existingEntity.Refresh(entity, trackChanges: false);
existingEntity.AcceptChanges();
});
}
else if (Products.MergeOption == MergeOption.PreserveChanges)
{
Invoke(delegate
{
existingEntity.Refresh(entity, trackChanges: false, preserveExistingChanges: true);
});
}
}
#endregion
return(existingEntity);
}
private Person AttachWithRelations(Person entity, InsertMode insertMode = InsertMode.Attach, MergeOption mergeOption = MergeOption.AppendOnly, List <object> referenceTrackingList = null)
{
#region iteration tracking
if (ReferenceEquals(null, referenceTrackingList))
{
referenceTrackingList = new List <object>();
}
if (referenceTrackingList.Contains(entity))
{
return(_people.GetExisting(entity));
}
else
{
referenceTrackingList.Add(entity);
}
#endregion
#region add/attach entity
Person existingEntity = null;
switch (insertMode)
{
case InsertMode.Add:
existingEntity = _people.Add(entity);
break;
case InsertMode.Attach:
existingEntity = _people.Attach(entity);
break;
default:
throw new Exception(string.Format("Implementation Exception: missing action for {0}", insertMode));
}
if (!ReferenceEquals(null, existingEntity) && ReferenceEquals(existingEntity, entity))
{
return(existingEntity);
}
#endregion
#region attach relations recursively
// register entity's property changed event if entity is new to context
if (ReferenceEquals(null, existingEntity))
{
entity.PropertyChanged += On_person_propertyChanged;
}
// attach related entity to context
if (!ReferenceEquals(null, entity.Address1))
{
var existingRelatedEntity = AttachWithRelations(entity.Address1, insertMode, mergeOption, referenceTrackingList);
// update relation if entity is new to context or relation is new to entity
if (ReferenceEquals(null, existingEntity) || !entity.Address1.Equals(existingEntity.Address1))
{
if (!ReferenceEquals(null, existingRelatedEntity) && !ReferenceEquals(existingRelatedEntity, entity.Address1))
{
// check merge options
if (!(mergeOption == MergeOption.PreserveChanges && existingRelatedEntity.ChangeTracker.OriginalValues.ContainsKey("People")))
{
using (entity.ChangeTrackingPrevention())
{
entity.Address1 = existingRelatedEntity;
}
using (existingRelatedEntity.ChangeTrackingPrevention())
{
var entityToReplace = existingRelatedEntity.People.FirstOrDefault(e => e.Equals(entity));
if (!ReferenceEquals(null, entityToReplace))
{
using (entityToReplace.ChangeTrackingPrevention())
{
existingRelatedEntity.People.Remove(entityToReplace);
}
}
existingRelatedEntity.People.Add(entity);
}
}
}
}
}
#endregion
#region refresh existing entity based on merge options
if (!ReferenceEquals(null, existingEntity) && !ReferenceEquals(existingEntity, entity))
{
if (People.MergeOption == MergeOption.OverwriteChanges)
{
Invoke(delegate
{
existingEntity.Refresh(entity, trackChanges: false);
existingEntity.AcceptChanges();
});
}
else if (People.MergeOption == MergeOption.PreserveChanges)
{
Invoke(delegate
{
existingEntity.Refresh(entity, trackChanges: false, preserveExistingChanges: true);
});
}
}
#endregion
return(existingEntity);
}
private CRecord AttachWithRelations(CRecord entity, InsertMode insertMode = InsertMode.Attach, MergeOption mergeOption = MergeOption.AppendOnly, List <object> referenceTrackingList = null)
{
#region iteration tracking
if (ReferenceEquals(null, referenceTrackingList))
{
referenceTrackingList = new List <object>();
}
if (referenceTrackingList.Contains(entity))
{
return(_cRecords.GetExisting(entity));
}
else
{
referenceTrackingList.Add(entity);
}
#endregion
#region add/attach entity
CRecord existingEntity = null;
switch (insertMode)
{
case InsertMode.Add:
existingEntity = _cRecords.Add(entity);
break;
case InsertMode.Attach:
existingEntity = _cRecords.Attach(entity);
break;
default:
throw new Exception(string.Format("Implementation Exception: missing action for {0}", insertMode));
}
if (!ReferenceEquals(null, existingEntity) && ReferenceEquals(existingEntity, entity))
{
return(existingEntity);
}
#endregion
#region attach relations recursively
#endregion
#region refresh existing entity based on merge options
if (!ReferenceEquals(null, existingEntity) && !ReferenceEquals(existingEntity, entity))
{
if (CRecords.MergeOption == MergeOption.OverwriteChanges)
{
Invoke(delegate
{
existingEntity.Refresh(entity, trackChanges: false);
existingEntity.AcceptChanges();
});
}
else if (CRecords.MergeOption == MergeOption.PreserveChanges)
{
Invoke(delegate
{
existingEntity.Refresh(entity, trackChanges: false, preserveExistingChanges: true);
});
}
}
#endregion
return(existingEntity);
}
