public ObjectInfo(IQEventType eventType, IDbContext queryController, IObjectData data, IClassInfo info, object obj)
{
EventType = eventType;
QueryController = queryController;
ObjectData = data;
ClassInfo = info;
Source = obj;
}
public ObjectInfo(IQEventType eventType,IDbContext queryController, IObjectData data, IClassInfo info, object obj)
{
EventType = eventType;
QueryController = queryController;
ObjectData = data;
ClassInfo = info;
Source = obj;
}
protected void AddAventHandlerImpl(IQEventType eventType, MethodInfo method)
{
List <MethodInfo> list;
if (!Events.TryGetValue(eventType, out list))
{
list = new List <MethodInfo>();
Events[eventType] = list;
}
list.Add(method);
}
/// <summary>
/// Call all registered event handlers for an event type. If the "Cancel" property of the argument is set, this
/// will return false with the expectation that the event is halted.
/// </summary>
/// <param name="target"></param>
/// <param name="eventType"></param>
public bool DoEvent(object target, IQEventType eventType, IDbContext controller)
{
var dbData = IQ.MapperCache.GetTrackedObjectData(target);
var parm = new ObjectInfo(
eventType,
controller,
dbData,
this,
target);
List <MethodInfo> list;
object[] args = new object[1] {
parm
};
// mask out the details
if (Events.TryGetValue(eventType, out list))
{
foreach (var method in list)
{
try
{
method.Invoke(target, args);
}
catch (Exception e)
{
if (e.InnerException != null)
{
throw e.InnerException;
}
else
{
throw e;
}
}
}
}
return(!parm.Cancel);
}
public void OnSave(IEventData data)
{
SavedEventData = data;
SavedEventType = data.EventType;
}
/// <summary>
/// Call all registered event handlers for an event type. If the "Cancel" property of the argument is set, this
/// will return false with the expectation that the event is halted.
/// </summary>
/// <param name="target"></param>
/// <param name="eventType"></param>
public bool DoEvent(object target, IQEventType eventType, IDbContext controller)
{
var dbData = IQ.MapperCache.GetTrackedObjectData(target);
var parm = new ObjectInfo(
eventType,
controller,
dbData,
this,
target);
List<MethodInfo> list;
object[] args = new object[1] { parm };
// mask out the details
if (Events.TryGetValue(eventType, out list))
{
foreach (var method in list)
{
try
{
method.Invoke(target, args);
}
catch (Exception e)
{
if (e.InnerException != null)
{
throw e.InnerException;
}
else
{
throw e;
}
}
}
}
return !parm.Cancel;
}
public void AddEventHandler(IQEventType eventType, Action <IEventData> handler)
{
MethodInfo method = handler.Method;
AddAventHandlerImpl(eventType, method);
}
/// <summary>
/// options may include: an IDbConnection, an IDbTransaction, CommandBehavior. Save queries should not
/// include any other parameters
/// </summary>
/// <param name="obj"></param>
/// <param name="options"></param>
/// <returns></returns>
public bool Save(object obj, params object[] options)
{
ParameterParser pp = new ParameterParser("", options);
if (pp.Parameters.Count > 0)
{
throw new IQException("The only allowed parameters for a Save are IDbConnection, IDbTransaction, and CommandBehavior");
}
IDBObjectData dbData = IQ.DBData(obj);
DBClassInfo info = dbData.ClassInfo;
IQEventType eventType = IQEventType.Save;
var eventHandler = dbData.IQEventHandlerFunc;
if (eventHandler != null)
{
eventHandler(eventType | IQEventType.Before, dbData);
}
QueryType queryType = dbData.IsNew() ? QueryType.Insert : QueryType.Update;
ISqlQuery query = IQ.CreateQuery(queryType);
query.AddFieldMap(info.FieldNameMap);
query.TableName = dbData.TableName;
bool isDirty = false;
bool isNew = dbData.IsNew();
string pk = dbData.ClassInfo.PrimaryKey.Name;
foreach (var item in dbData.ClassInfo.FieldInfo)
{
string name = item.Name;
if (!item.IsPrimaryKey && !item.IsReadOnly &&
(isNew || dbData.IsDirty(name)))
{
query.AddUpdateData(name, info[name].GetValue(obj));
isDirty = true;
}
}
bool success = false;
if (isDirty)
{
if (queryType == QueryType.Insert)
{
eventType |= IQEventType.Insert;
int newPK = StorageController.RunQueryInsert(pp.Connection, query.GetQuery(), query.Parameters,
transaction: pp.Transaction);
if (newPK <= 0)
{
throw new Exception("The record could not be inserted.");
}
dbData.ClassInfo[pk].SetValue(obj, newPK);
success = true;
}
else
{
eventType |= IQEventType.Update;
query.AddWhereParam(dbData.ClassInfo.PrimaryKey.Name, dbData.ClassInfo.PrimaryKey.GetValue(obj));
success = StorageController.RunQueryScalar(pp.Connection, query.GetQuery(), query.Parameters,
transaction: pp.Transaction) > 0;
}
}
else
{
success = false;
}
if (eventHandler != null)
{
eventHandler(eventType | IQEventType.After, dbData);
}
if (success)
{
dbData.Clean();
}
if (pp.CommandBehavior == CommandBehavior.CloseConnection)
{
pp.Connection.Close();
}
return(success);
}
