private static DbContextInitializerBase CreateInitializer(DbContextInitializerConfig config)
{
Type initializerType = config.InitializerType;
DbContextInitializerBase initializer = Activator.CreateInstance(initializerType) as DbContextInitializerBase;
if (initializer == null)
{
throw new InvalidOperationException("类型“{0}”不是有效的上下文初始化类型".FormatWith(initializerType));
}
foreach (Assembly mapperAssembly in config.EntityMapperAssemblies)
{
if (initializer.MapperAssemblies.Contains(mapperAssembly))
{
continue;
}
initializer.MapperAssemblies.Add(mapperAssembly);
}
dynamic dynamicInitializer = initializer;
if (config.CreateDatabaseInitializerType != null)
{
dynamic createDatabaseInitializer = Activator.CreateInstance(config.CreateDatabaseInitializerType);
dynamicInitializer.CreateDatabaseInitializer = createDatabaseInitializer;
}
return((DbContextInitializerBase)dynamicInitializer);
}
/// <summary>
/// 注册上下文初始化器
/// </summary>
/// <param name="contextType">上下文类型</param>
/// <param name="initializer">上下文初始化器</param>
public void RegisterInitializer(Type contextType, DbContextInitializerBase initializer)
{
if (_contextInitializerDict.ContainsKey(contextType))
{
return;
}
_contextInitializerDict[contextType] = initializer;
}
/// <summary>
/// 注册上下文初始化器
/// </summary>
/// <param name="contextType">上下文类型</param>
/// <param name="initializer">上下文初始化器</param>
public void RegisterInitializer(Type contextType, DbContextInitializerBase initializer)
{
if (_contextInitializerDict.ContainsKey(contextType))
{
return;
}
_contextInitializerDict[contextType] = initializer;
initializer.Initialize();
}
/// <summary>
/// 初始化数据上下文
/// </summary>
/// <param name="config">数据上下文配置信息</param>
private static void DbContextInit(DbContextConfig config)
{
if (!config.Enabled)
{
return;
}
DbContextInitializerBase initializer = CreateInitializer(config.InitializerConfig);
DbContextManager.Instance.RegisterInitializer(config.ContextType, initializer);
}