/// <inheritdoc/>
public IRepository SelectRepository(Type entityType, bool memRepositoryEnabled = true)
{
var mainRepository = _mainRepositoryMapping[entityType];
// 是否启用了 MemoryRepository？
if (memRepositoryEnabled)
{
var isStaticEntity = PersistenceConfig.IsStaticConfigTable(entityType);
var isDynamicEntity = PersistenceConfig.IsDynamicConfigTable(entityType);
// 如果为“静态配置表” || “为动态配置表且此表所在的远程库没有连接”
if (isStaticEntity || (isDynamicEntity && !mainRepository.Connected))
{
return(this.MemoryRepository);
}
else
{
return(_mainRepositoryMapping[entityType]);
}
}
else
{
// 主用库是否连接？
if (mainRepository.Connected)
{
return(mainRepository);
}
else
{
_backupRepositoryMapping.TryGetValue(entityType, out Repository backupRepository);
return(backupRepository);
}
}
}
private void InitializeEnvironment(bool enableRemoteDb)
{
// 数据库日志配置
Database.UseLog(LoggerNames.Persistence);
// 配置SQLite 底层的dll 对应的环境变量（主要是为了加载该底层的dll）
Environment.SetEnvironmentVariable("PreLoadSQLite_BaseDirectory", HelperTools.CurrentDllPath);
// 初始化配置。
PersistenceConfig.Initialize(enableRemoteDb);
}
/// <summary>
/// Close manager.
/// </summary>
public void Close()
{
//
_repositories.Values.ForEach(p => p.Dispose());
_repositories.Clear();
//
DbConnectionMonitor.Current.Close();
PersistenceConfig.Close();
}
/// <summary>
///
/// </summary>
public void Update <T>(object instance, Expression <Func <T, bool> > predicate) where T : Entity
{
// 如果是静态数据，则不允许此操作。
var entityType = typeof(T);
if (PersistenceConfig.IsStaticConfigTable(entityType))
{
throw new InvalidOperationException(string.Format($"{entityType.Name} 为静态配置数据，无法执行Update操作。"));
}
var theRepository = _repositorySelector.SelectRepository(typeof(T));
if (theRepository == null)
{
throw new InvalidOperationException();
}
else
{
theRepository.Update(instance, predicate);
}
}
/// <summary>
///
/// </summary>
public void AsyncInsert <T>(T[] entities, Action <Exception> exceptionHandler) where T : Entity
{
// 如果是静态数据，则不允许此操作。
var entityType = typeof(T);
if (PersistenceConfig.IsStaticConfigTable(entityType))
{
throw new InvalidOperationException(string.Format($"{entityType.Name} 为静态配置数据，无法执行AsyncInsert操作。"));
}
var theRepository = _repositorySelector.SelectRepository(typeof(T));
if (theRepository == null)
{
throw new InvalidOperationException();
}
else
{
theRepository.AsyncInsert(entities, exceptionHandler);
}
}
private void CreateRepositories(bool enableRemoteDb)
{
var dataSources = PersistenceConfig.GetDataSources();
// 是否启用远程数据库？
if (!enableRemoteDb)
{
dataSources = dataSources.Where(p => !PersistenceConfig.IsRemoteDatabase((DataBaseType)p.DbType));
}
// 内置 MemoryRepository。
var memoryDataSource = new DataSource()
{
Name = DataBaseType.Memory.ToString(),
DbType = (int)DataBaseType.Memory,
};
dataSources = dataSources.Union(new DataSource[] { memoryDataSource });
// 创建 Repository。
_repositories = RepositoryFactory.Create(dataSources, _repositorySelector).ToDictionary(p => p.DataSource.Name, q => q);
}