private void BeginExecuteQueryCallback(IAsyncResult state)
{
ExecuteQueryDelegate del = (ExecuteQueryDelegate)state.AsyncState;
this._dtResult = del.EndInvoke(state);
this.RaiseExecuteStopped();
}
public void BeginExecuteQuery()
{
ExecuteQueryDelegate del = new ExecuteQueryDelegate(this.DoQueryExec);
//del.BeginInvoke(this._db, new AsyncCallback(this.BeginExecuteQueryCallback), del);
del.BeginInvoke(this._dbType, this._cnStr, this._qrStr, this._timeOut, new AsyncCallback(this.BeginExecuteQueryCallback), del);
}
public void BeginExecuteQuery()
{
ExecuteQueryDelegate del = new ExecuteQueryDelegate(this.DoQueryExec);
//del.BeginInvoke(this._db, new AsyncCallback(this.BeginExecuteQueryCallback), del);
del.BeginInvoke(this._connStr, this._qryStr, this._provType, new AsyncCallback(this.BeginExecuteQueryCallback), del);
}
/// <summary>
/// Функция запуска хранимых процедур или текстовых запросов.
/// В процессе работы вызываются события QueryExecuteStartedEvent и QueryExecuteFinishedEvent
/// </summary>
/// <param name="CommandText">Текст команды или имя процедуры</param>
/// <param name="CommandResultType">Тип возвращаемого результата</param>
/// <param name="CommandType">Тип команды</param>
/// <param name="ResultColumnName">Имя колонки с результатом</param>
/// <param name="CommandTimeOut">Таймаут для команды (в секундах)</param>
/// <returns>Структура с описанием результата</returns>
public CommandResult ExecuteQuery(string CommandText, CommandResultTypes CommandResultType, CommandType CommandType, string ResultColumnName, int CommandTimeOut)
{
ExecuteQueryDelegate executeQueryDelegate = new ExecuteQueryDelegate(ExecuteQueryWork);
/// Асинхронный запуск Запроса
IAsyncResult ar = executeQueryDelegate.BeginInvoke(
CommandText, CommandResultType, CommandType, ResultColumnName,CommandTimeOut, null, null);
/// Событие: запрос начал исполнение
if (QueryExecuteStartedEvent != null) {
QueryExecuteStartedEvent(this, EventArgs.Empty);
}
/// Ожидание окончания
CommandResult cr = executeQueryDelegate.EndInvoke(ar);
/// Событие: запрос завершил выполнение
if (QueryExecuteFinishedEvent != null) {
QueryExecuteFinishedEvent(this, EventArgs.Empty);
}
return cr;
}
public unsafe QueryFunctions(LibraryHandle handle)
{
Create = handle.GetUnmanagedDelegate <CreateQueryDelegate>();
Delete = handle.GetUnmanagedDelegate <DeleteQueryDelegate>();
Execute = handle.GetUnmanagedDelegate <ExecuteQueryDelegate>();
DeleteCursor = handle.GetUnmanagedDelegate <DeleteCursorDelegate>();
SetHints = handle.GetUnmanagedDelegate <SetHintsDelegate>();
AddOr = handle.GetUnmanagedDelegate <AddOrDelegate>();
CursorResult = handle.GetUnmanagedDelegate <CursorResultDelegate>();
NewBuffer = handle.GetUnmanagedDelegate <QueryFunctions.NewBufferDelegate>();
DeleteBuffer = handle.GetUnmanagedDelegate <QueryFunctions.DeleteBufferDelegate>();
BufferSize = handle.GetUnmanagedDelegate <GetSizeDelegate>();
BufferToString = handle.GetUnmanagedDelegate <ToStringDelegate>();
}
public QueryHandle(Collection collection, byte[] queryAsBson)
: base(true)
{
Collection = collection;
var database = collection.Database;
var libraryHandle = database.Library.LibraryHandle;
var createQuery = libraryHandle.GetUnmanagedDelegate<CreateQueryDelegate>();
handle = createQuery(database.DatabaseHandle, queryAsBson);
if (IsInvalid)
{
EjdbException.FromDatabase(database, "Failed to create query");
}
_delete = libraryHandle.GetUnmanagedDelegate<DeleteQueryDelegate>();
_execute = libraryHandle.GetUnmanagedDelegate<ExecuteQueryDelegate>();
_deleteCursor = libraryHandle.GetUnmanagedDelegate<DeleteCursorDelegate>();
_setHints = libraryHandle.GetUnmanagedDelegate<SetHintsDelegate>();
_addOr = libraryHandle.GetUnmanagedDelegate<AddOrDelegate>();
}
protected override bool ReleaseHandle()
{
_delete(handle);
_execute = null;
_setHints = null;
_deleteCursor = null;
_addOr = null;
return true;
}