public static void CheckSchema(IEntitySchema view)
{
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
var dbProvider = DbConnectionManager.Gain(view.ConnectKey, true);
if (dbProvider.AccessLevel == AccessLevel.ReadOnly)
{
throw new InvalidOperationException("DbProvider key:" + view.ConnectKey + ", read only!");
}
var tables = view.Tables;
if (tables.Count == 0)
{
throw new InvalidOperationException("no entity schema table!");
}
if (!tables.All(p => CheckTableChanged(p, dbProvider)))
{
return;
}
if (tables.Count >= 2)
{
CheckViewChanged(view, dbProvider);
}
if (view.Attributes.HasFlag(EntitySchemaAttributes.CreateProcedure))
{
CheckProcedureChanged(view, ProcedureUsage.Insert, dbProvider);
CheckProcedureChanged(view, ProcedureUsage.Update, dbProvider);
if (view.Attributes.HasFlag(EntitySchemaAttributes.CreateType))
{
if (ProcedureExists(view, ProcedureUsage.TypeInsert, dbProvider))
{
var strComm = string.Format("Drop Procedure [dbo].[Insert{0}Type]", view.Name);
dbProvider.ExecuteNonQuery(strComm);
}
if (ProcedureExists(view, ProcedureUsage.TypeUpdate, dbProvider))
{
var strComm = string.Format("Drop Procedure [dbo].[Update{0}Type]", view.Name);
dbProvider.ExecuteNonQuery(strComm);
}
CheckTypeChanged(view, dbProvider);
CheckProcedureChanged(view, ProcedureUsage.TypeInsert, dbProvider);
CheckProcedureChanged(view, ProcedureUsage.TypeUpdate, dbProvider);
}
}
}
public static bool CheckTableChanged(ISchemaTable table)
{
if (table == null)
{
throw new ArgumentNullException(nameof(table));
}
if (!DbConnectionManager.TryGet(table.Schema.ConnectKey, out DbConnectionProvider connectionProvider))
{
throw new KeyNotFoundException("not found DbProvider key:" + table.Schema.ConnectKey);
}
if (connectionProvider.AccessLevel == AccessLevel.ReadOnly)
{
throw new InvalidOperationException("DbProvider key:" + table.Schema.ConnectKey + ", read only!");
}
return(CheckTableChanged(table, connectionProvider));
}
public static bool CheckViewChanged(IEntitySchema entitySchema)
{
if (entitySchema == null)
{
throw new ArgumentNullException(nameof(entitySchema));
}
if (!DbConnectionManager.TryGet(entitySchema.ConnectKey, out DbConnectionProvider connectionProvider))
{
throw new KeyNotFoundException("not found DbProvider key:" + entitySchema.ConnectKey);
}
if (connectionProvider.AccessLevel == AccessLevel.ReadOnly)
{
throw new InvalidOperationException("DbProvider key:" + entitySchema.ConnectKey + ", read only!");
}
return(CheckViewChanged(entitySchema, connectionProvider));
}
public static bool CheckProcedureChanged(IEntitySchema view, ProcedureUsage usage)
{
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
if (!DbConnectionManager.TryGet(view.ConnectKey, out DbConnectionProvider connectionProvider))
{
throw new KeyNotFoundException("not found DbProvider key:" + view.ConnectKey);
}
if (connectionProvider.AccessLevel == AccessLevel.ReadOnly)
{
throw new InvalidOperationException("DbProvider key:" + view.ConnectKey + ", read only!");
}
return(CheckProcedureChanged(view, usage, connectionProvider));
}
/// <summary>
/// 根据数据库的逻辑名称创建Database实例
/// </summary>
/// <param name="name">数据库逻辑名称</param>
/// <returns>Database实例</returns>
public static Database Create(string name)
{
ExceptionHelper.CheckStringIsNullOrEmpty(name, "name");
//// 根据数据驱动名称对应的数据库实体
//// 如果以后需要开放DeluxeWorks.Db提供自动加载第三方Database类型的话，也仅需要修改这个方法
//switch (DbConnectionManager.GetDbProviderName(name))
//{
// case "System.Data.SqlClient":
// return new SqlDatabase(name);
// case "System.Data.OracleClient":
// return new OracleDatabase(name);
// //case "Oracle.DataAccess.Client":
// // return new ODP.OracleDatabase(name);
// default:
// throw new NotSupportedException(name + " 所定义的数据驱动不支持");
//}
return(DbConnectionManager.GetDataProvider(name) as Database);
}
/// <summary>
/// 根据名称得到当前引用的连接
/// </summary>
/// <param name="connName">数据库连接名称</param>
/// <returns>连接对象</returns>
protected ReferenceConnection GetRefConnectionWithoutTx(string connName)
{
ReferenceConnection refConnection = null;
GraphWithoutTransaction connections = GraphWithoutTx;
lock (connections)
{
if (connections.TryGetValue(connName, out refConnection) == false)
{
DbConnection connection = DbConnectionManager.GetConnection(connName);
this.isConnectionCreator = true;
refConnection = new ReferenceConnection(connName, connection);
connections.Add(connName, refConnection);
}
else
{
refConnection.ReferenceCount++;
}
}
return(refConnection);
}
