/// <summary>
/// Register (add) a type handler for a type and dbType
/// </summary>
/// <param name="type">the type</param>
/// <param name="dbType">the dbType (optional, if dbType is null the handler will be used for all dbTypes)</param>
/// <param name="handler">the handler instance</param>
public void Register(Type type, string dbType, ITypeHandler handler)
{
IDictionary <string, ITypeHandler> map = null;
typeHandlerMap.TryGetValue(type, out map);
if (map == null)
{
map = new Dictionary <string, ITypeHandler>();
typeHandlerMap.Add(type, map);
}
if (dbType == null)
{
if (logger.IsInfoEnabled)
{
// notify the user that they are no longer using one of the built-in type handlers
ITypeHandler oldTypeHandler = null;
map.TryGetValue(NULL, out oldTypeHandler);
if (oldTypeHandler != null)
{
// the replacement will always(?) be a CustomTypeHandler
CustomTypeHandler customTypeHandler = handler as CustomTypeHandler;
string replacement = string.Empty;
if (customTypeHandler != null)
{
// report the underlying type
replacement = customTypeHandler.Callback.ToString();
}
else
{
replacement = handler.ToString();
}
// should oldTypeHandler be checked if its a CustomTypeHandler and if so report the Callback property ???
logger.Info("Replacing type handler [" + oldTypeHandler + "] with [" + replacement + "].");
}
}
map[NULL] = handler;
}
else
{
map.Add(dbType, handler);
}
}
/// <summary>
/// Register (add) a type handler for a type and dbType
/// </summary>
/// <param name="type">the type</param>
/// <param name="dbType">the dbType (optional, if dbType is null the handler will be used for all dbTypes)</param>
/// <param name="handler">the handler instance</param>
public void Register(Type type, string dbType, ITypeHandler handler)
{
HybridDictionary map = (HybridDictionary)_typeHandlerMap[type];
if (map == null)
{
map = new HybridDictionary();
_typeHandlerMap.Add(type, map);
}
if (dbType == null)
{
if (_logger.IsDebugEnabled)
{
// notify the user that they are no longer using one of the built-in type handlers
ITypeHandler oldTypeHandler = (ITypeHandler)map[NULL];
if (oldTypeHandler != null)
{
// the replacement will always(?) be a CustomTypeHandler
CustomTypeHandler customTypeHandler = handler as CustomTypeHandler;
string replacement = string.Empty;
if (customTypeHandler != null)
{
// report the underlying type
replacement = customTypeHandler.Callback.ToString();
}
else
{
replacement = handler.ToString();
}
// should oldTypeHandler be checked if its a CustomTypeHandler and if so report the Callback property ???
_logger.Debug("Replacing type handler [" + oldTypeHandler.ToString() + "] with [" + replacement + "].");
}
}
map[NULL] = handler;
}
else
{
map.Add(dbType, handler);
}
}
public void Register(Type type, string dbType, ITypeHandler handler)
{
HybridDictionary dictionary = (HybridDictionary)this._typeHandlerMap[type];
if (dictionary == null)
{
dictionary = new HybridDictionary();
this._typeHandlerMap.Add(type, dictionary);
}
if (dbType == null)
{
if (_logger.IsInfoEnabled)
{
ITypeHandler handler2 = (ITypeHandler)dictionary["_NULL_TYPE_"];
if (handler2 != null)
{
CustomTypeHandler handler3 = handler as CustomTypeHandler;
string str = string.Empty;
if (handler3 != null)
{
str = handler3.Callback.ToString();
}
else
{
str = handler.ToString();
}
_logger.Info("Replacing type handler [" + handler2.ToString() + "] with [" + str + "].");
}
}
dictionary["_NULL_TYPE_"] = handler;
}
else
{
dictionary.Add(dbType, handler);
}
}
/// <summary>
/// Register (add) a type handler for a type and dbType
/// </summary>
/// <param name="type">the type</param>
/// <param name="dbType">the dbType (optional, if dbType is null the handler will be used for all dbTypes)</param>
/// <param name="handler">the handler instance</param>
public void Register(Type type, string dbType, ITypeHandler handler)
{
HybridDictionary map = (HybridDictionary)_typeHandlerMap[type];
if (map == null)
{
map = new HybridDictionary();
_typeHandlerMap.Add(type, map);
}
if (dbType == null)
{
if (_logger.IsInfoEnabled)
{
// notify the user that they are no longer using one of the built-in type handlers
ITypeHandler oldTypeHandler = (ITypeHandler)map[NULL];
if (oldTypeHandler != null)
{
// the replacement will always(?) be a CustomTypeHandler
CustomTypeHandler customTypeHandler = handler as CustomTypeHandler;
string replacement = string.Empty;
if (customTypeHandler != null)
{
// report the underlying type
replacement = customTypeHandler.Callback.ToString();
}
else
{
replacement = handler.ToString();
}
// should oldTypeHandler be checked if its a CustomTypeHandler and if so report the Callback property ???
_logger.Info("Replacing type handler [" + oldTypeHandler.ToString() + "] with [" + replacement + "].");
}
}
map[NULL] = handler;
}
else
{
map.Add(dbType, handler);
}
}
/// <summary>
/// Register (add) a type handler for a type and dbType
/// 根据前两个参数 分两次获取数据 最后把dbType加入字典当中
/// </summary>
/// <param name="type">the type</param>
/// <param name="dbType">the dbType (optional, if dbType is null the handler will be used for all dbTypes)</param>
/// <param name="handler">the handler instance</param>
public void Register(Type type, string dbType, ITypeHandler handler)
{
IDictionary<string, ITypeHandler> map = null;
typeHandlerMap.TryGetValue(type, out map);
if (map == null) //如果type不存在，则加入当前对象
{
map = new Dictionary<string, ITypeHandler>();
typeHandlerMap.Add(type, map) ;
}
if (dbType==null)
{
if (logger.IsInfoEnabled)
{
// notify the user that they are no longer using one of the built-in type handlers
ITypeHandler oldTypeHandler = null;
map.TryGetValue(NULL, out oldTypeHandler);
if (oldTypeHandler != null)
{
// the replacement will always(?) be a CustomTypeHandler
CustomTypeHandler customTypeHandler = handler as CustomTypeHandler;
string replacement = string.Empty;
if (customTypeHandler != null)
{
// report the underlying type
replacement = customTypeHandler.Callback.ToString();
}
else
{
replacement = handler.ToString();
}
// should oldTypeHandler be checked if its a CustomTypeHandler and if so report the Callback property ???
logger.Info("Replacing type handler [" + oldTypeHandler + "] with [" + replacement + "].");
}
}
map[NULL] = handler;//意味着dbType默认的null类型 对应当前
}
else
{
map.Add(dbType, handler);//最后加入字典当中ITypeHandler处理类对象
}
}