internal static async ValueTask DeleteModelCodeAsync(ulong modelId, Transaction txn)
{
IntPtr keyPtr;
int keySize = 9;
unsafe
{
byte *pk = stackalloc byte[keySize];
KeyUtil.WriteModelCodeKey(pk, modelId);
keyPtr = new IntPtr(pk);
}
var req = new ClrDeleteRequire
{
RaftGroupId = KeyUtil.META_RAFTGROUP_ID,
KeyPtr = keyPtr,
KeySize = new IntPtr(keySize),
SchemaVersion = 0,
ReturnExists = false,
DataCF = -1
};
IntPtr reqPtr;
unsafe { reqPtr = new IntPtr(&req); }
await HostApi.ExecKVDeleteAsync(txn.Handle, reqPtr);
}
internal static async ValueTask DeleteViewRoute(string viewName, Transaction txn)
{
IntPtr keyPtr;
int keySize = EntityStoreWriter.CalcStringUtf8Size(viewName) + 1;
unsafe
{
byte *pk = stackalloc byte[keySize];
KeyUtil.WriteViewRouteKey(pk, viewName);
keyPtr = new IntPtr(pk);
}
var req = new ClrDeleteRequire
{
RaftGroupId = KeyUtil.META_RAFTGROUP_ID,
KeyPtr = keyPtr,
KeySize = new IntPtr(keySize),
SchemaVersion = 0,
ReturnExists = false,
DataCF = -1
};
IntPtr reqPtr;
unsafe { reqPtr = new IntPtr(&req); }
await HostApi.ExecKVDeleteAsync(txn.Handle, reqPtr);
}
internal static async ValueTask DeleteModelAsync(ModelBase model, Transaction txn, Func <uint, ApplicationModel> getApp)
{
if (model.ModelType == ModelType.Entity && ((EntityModel)model).SysStoreOptions != null)
{
//TODO:考虑先保存删除状态的实体模型，存储层异步任务完成后会删除相应的实体模型
var app = getApp(model.AppId);
EntityModel em = (EntityModel)model;
var tableId = em.TableId | ((uint)app.StoreId << 24);
//TODO:全局索引入参处理
await HostApi.ExecMetaDropTableAsync(txn.Handle, tableId, model.Id, IntPtr.Zero, IntPtr.Zero, false);
}
else //----以下非系统存储的实体模型直接删除原数据----
{
IntPtr keyPtr;
unsafe
{
byte *pk = stackalloc byte[KeyUtil.MODEL_KEY_SIZE];
KeyUtil.WriteModelKey(pk, model.Id);
keyPtr = new IntPtr(pk);
}
var req = new ClrDeleteRequire
{
RaftGroupId = KeyUtil.META_RAFTGROUP_ID,
KeyPtr = keyPtr,
KeySize = new IntPtr(KeyUtil.MODEL_KEY_SIZE),
SchemaVersion = 0,
ReturnExists = false,
DataCF = -1
};
IntPtr reqPtr;
unsafe { reqPtr = new IntPtr(&req); }
await HostApi.ExecKVDeleteAsync(txn.Handle, reqPtr);
}
}