private void SetModifiedBySingle <T>(T entity) where T : IEntity
{
ThrowIfModifiedByIsEmpty <T>();
Cache <T> .ModifiedByProp?.SetValue(
entity,
BsonSerializer.Deserialize(ModifiedBy.ToBson(), Cache <T> .ModifiedByProp.PropertyType));
}
private void SetModifiedBySingle <T>(T entity) where T : IEntity
{
ThrowIfModifiedByIsEmpty <T>();
Cache <T> .ModifiedByProp?.SetValue(
entity,
BsonSerializer.Deserialize(ModifiedBy.ToBson(), Cache <T> .ModifiedByProp.PropertyType));
//note: we can't use an IModifiedBy interface because the above line needs a concrete type
// to be able to correctly deserialize a user supplied derived/sub class of ModifiedOn.
}
private void SetModifiedByMultiple <T>(IEnumerable <T> entities) where T : IEntity
{
if (Cache <T> .ModifiedByProp is null)
{
return;
}
ThrowIfModifiedByIsEmpty <T>();
var val = BsonSerializer.Deserialize(ModifiedBy.ToBson(), Cache <T> .ModifiedByProp.PropertyType);
foreach (var e in entities)
{
Cache <T> .ModifiedByProp.SetValue(e, val);
}
}
/// <summary> /// Instantiates a DBContext /// </summary> /// <param name="modifiedBy">An optional ModifiedBy instance. /// When supplied, all save/update operations performed via this DBContext instance will set the value on entities that has a property of type ModifiedBy. /// You can even inherit from the ModifiedBy class and add your own properties to it. /// Only one ModifiedBy property is allowed on a single entity type.</param> public DBContext(ModifiedBy modifiedBy = null) => ModifiedBy = modifiedBy;
/// <summary>
/// Gets a transaction context/scope for a given entity type's database
/// </summary>
/// <typeparam name="T">The entity type to determine the database from for the transaction</typeparam>
/// <param name="options">Client session options (not required)</param>
public static Transaction Transaction <T>(ClientSessionOptions options = null, ModifiedBy modifiedBy = null) where T : IEntity
{
return(new Transaction(DatabaseName <T>(), options, modifiedBy));
}
/// <summary>
/// Gets a transaction context/scope for a given database or the default database if not specified.
/// </summary>
/// <param name="database">The name of the database which this transaction is for (not required)</param>
/// <param name="options">Client session options (not required)</param>
public static Transaction Transaction(string database = default, ClientSessionOptions options = null, ModifiedBy modifiedBy = null)
{
return(new Transaction(database, options, modifiedBy));
}
/// <summary>
/// Instantiates and begins a transaction.
/// </summary>
/// <param name="database">The name of the database to use for this transaction. default db is used if not specified</param>
/// <param name="options">Client session options for this transaction</param>
/// <param name="modifiedBy">An optional ModifiedBy instance.
/// When supplied, all save/update operations performed via this DBContext instance will set the value on entities that has a property of type ModifiedBy.
/// You can inherit from the ModifiedBy class and add your own properties to it.
/// Only one ModifiedBy property is allowed on a single entity type.</param>
public Transaction(string database = default, ClientSessionOptions options = null, ModifiedBy modifiedBy = null)
{
Session = DB.Database(database).Client.StartSession(options);
Session.StartTransaction();
ModifiedBy = modifiedBy;
}