/// <summary>
///
/// </summary>
public MonetDbDataReader(MapiHdl queryHandle, MonetDbConnection connection)
{
_queryHandle = queryHandle;
_connHandle = connection.GetConnectionHandle();
Init();
}
/// <summary>
///
/// </summary>
/// <param name="connectionHandle"></param>
/// <exception cref="MonetDbException"></exception>
public static void DieConnectionError(MapiConnection connectionHandle)
{
if (connectionHandle.Ptr == IntPtr.Zero ||
MapiLib.MapiError(connectionHandle).Ptr != IntPtr.Zero)
{
throw new MonetDbException(MapiLib.MapiErrorString(connectionHandle));
}
}
/// <summary>
///
/// </summary>
/// <param name="connectionHandle"></param>
/// <exception cref="MonetDbException"></exception>
public static void DieConnectionError(MapiConnection connectionHandle)
{
if (connectionHandle.Ptr == IntPtr.Zero ||
MapiLib.MapiError(connectionHandle).Ptr != IntPtr.Zero)
{
throw new MonetDbException(MapiLib.MapiErrorString(connectionHandle));
}
}
/// <summary>
///
/// </summary>
/// <param name="connection"></param>
/// <param name="query"></param>
/// <returns></returns>
/// <exception cref="MonetDbException"></exception>
public static MapiHdl GetQueryHandle(MapiConnection connection, string query)
{
var queryHandle = MapiLib.MapiQuery(connection, query);
DieQueryError(connection, queryHandle);
return(queryHandle);
}
/// <summary>
/// Return a list of accessible tables fields. This can also be obtained by
/// inspecting the field descriptor returned by mapi_fetch_field().
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static string[] MapiFields(MapiConnection mid)
{
var pptr = CMapiLib.mapi_fields(mid.Ptr);
var ptr = Marshal.ReadIntPtr(pptr);
var exploded = new List <string>();
do
{
exploded.Add(Marshal.PtrToStringAnsi(ptr));
pptr = new IntPtr((int)pptr + IntPtr.Size);
ptr = Marshal.ReadIntPtr(pptr);
} while (ptr != IntPtr.Zero);
return(exploded.ToArray());
}
/// <summary>
/// Send the Command to the database server represented by mid.
/// This function returns a query handle with which the results of the
/// query can be retrieved. The handle should be closed with mapi_close_handle().
/// The command response is buffered for consumption, c.f. mapi\_fetch\_row().
/// </summary>
/// <param name="mapi"></param>
/// <param name="command"></param>
/// <returns></returns>
public static MapiHdl MapiQuery(MapiConnection mapi, string command)
{
return new MapiHdl(CMapiLib.mapi_query(mapi.Ptr, command));
}
/// <summary>
/// Similar to mapi_query_array(), except that the response of the
/// server is not analyzed, but shipped immediately to the file indicated.
/// </summary>
/// <param name="mid"></param>
/// <param name="command"></param>
/// <param name="args"></param>
/// <param name="fs"></param>
/// <returns></returns>
public static MapiHdl MapiQuickQueryArray(MapiConnection mid, string command, string[] args, FileStream fs)
{
return new MapiHdl(CMapiLib.mapi_quick_query_array(mid.Ptr, command, args, fs.SafeFileHandle));
}
/// <summary>
/// Return the current value of the trace flag.
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static int MapiGetTrace(MapiConnection mid)
{
return CMapiLib.mapi_get_trace(mid.Ptr);
}
/// <summary>
/// Test availability of the server. Returns zero upon success.
/// </summary>
/// <param name="mapi"></param>
/// <returns></returns>
public static MapiMsg MapiPing(MapiConnection mapi)
{
return new MapiMsg(CMapiLib.mapi_ping(mapi.Ptr));
}
/// <summary>
/// Close the current channel (if still open) and re-establish a fresh connection.
/// This will remove all global session variables.
/// </summary>
/// <param name="mapi"></param>
/// <returns></returns>
public static MapiMsg MapiReconnect(MapiConnection mapi)
{
return(new MapiMsg(CMapiLib.mapi_reconnect(mapi.Ptr)));
}
/// <summary>
///
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static string MapiGetDbName(MapiConnection mid)
{
return Marshal.PtrToStringAnsi(CMapiLib.mapi_get_dbname(mid.Ptr));
}
/// <summary>
/// A limited number of tuples are pre-fetched after each execute().
/// If maxrows is negative, all rows will be fetched before the application is
/// permitted to continue. Once the cache is filled, a number of tuples are shuffled to
/// make room for new ones, but taking into account non-read elements.
/// Filling the cache quicker than reading leads to an error.
/// </summary>
/// <param name="mid"></param>
/// <param name="maxrows"></param>
/// <returns></returns>
public static MapiMsg MapiCacheLimit(MapiConnection mid, int maxrows)
{
return(new MapiMsg(CMapiLib.mapi_cache_limit(mid.Ptr, maxrows)));
}
/// <summary>
/// Send the Command to the database server replacing the placeholders (?) by the string arguments presented.
/// </summary>
/// <param name="mid"></param>
/// <param name="command"></param>
/// <param name="args"></param>
/// <returns></returns>
public static MapiHdl MapiQueryArray(MapiConnection mid, string command, string[] args)
{
return(new MapiHdl(CMapiLib.mapi_query_array(mid.Ptr, command, args)));
}
/// <summary>
/// Write the error message obtained from mserver to a file.
/// </summary>
/// <param name="mid"></param>
/// <param name="fs"></param>
/// <returns></returns>
public static MapiMsg MapiExplain(MapiConnection mid, FileStream fs)
{
return(new MapiMsg(CMapiLib.mapi_explain(mid.Ptr, fs.SafeFileHandle)));
}
/// <summary>
/// Set the autocommit flag (default is on).
/// This only has an effect when the language is SQL.
/// In that case, the server commits after each statement sent to the server.
/// </summary>
/// <param name="mid"></param>
/// <param name="autocommit"></param>
/// <returns></returns>
public static MapiMsg MapiSetAutocommit(MapiConnection mid, int autocommit)
{
return(new MapiMsg(CMapiLib.mapi_setAutocommit(mid.Ptr, autocommit)));
}
/// <summary>
/// Return a pointer to the last error message.
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static string MapiErrorString(MapiConnection mid)
{
return(Marshal.PtrToStringAnsi(CMapiLib.mapi_error_str(mid.Ptr)));
}
/// <summary>
/// Return the last error code or 0 if there is no error.
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static MapiMsg MapiError(MapiConnection mid)
{
return(new MapiMsg(CMapiLib.mapi_error(mid.Ptr)));
}
/// <summary>
/// Move the query to a newly allocated query handle (which is returned).
/// Possibly interact with the back-end to prepare the query for execution.
/// </summary>
/// <param name="mid"></param>
/// <param name="command"></param>
/// <returns></returns>
public static MapiHdl MapiPrepare(MapiConnection mid, string command)
{
return(new MapiHdl(CMapiLib.mapi_prepare(mid.Ptr, command)));
}
/// <summary>
/// Send the request for processing and fetch a limited number of tuples
/// (determined by the window size) to assess any erroneous situation.
/// Thereafter, prepare for continual reading of tuples from the stream,
/// until an error occurs. Each time a tuple arrives, the cache is shifted one.
/// </summary>
/// <param name="mid"></param>
/// <param name="command"></param>
/// <param name="windowSize"></param>
/// <returns></returns>
public static MapiHdl MapiStreamQuery(MapiConnection mid, string command, int windowSize)
{
return(new MapiHdl(CMapiLib.mapi_stream_query(mid.Ptr, command, windowSize)));
}
/// <summary>
/// Set the trace flag to monitor interaction with the server.
/// </summary>
/// <param name="mid"></param>
/// <param name="flag"></param>
/// <returns></returns>
public static MapiMsg MapiTrace(MapiConnection mid, int flag)
{
return(new MapiMsg(CMapiLib.mapi_trace(mid.Ptr, flag)));
}
/// <summary>
/// Log the interaction between the client and server for offline inspection.
/// Beware that the log file overwrites any previous log. It is not intended for recovery.
/// </summary>
/// <param name="mid"></param>
/// <param name="filename"></param>
/// <returns></returns>
public static MapiMsg MapiTraceLog(MapiConnection mid, string filename)
{
return new MapiMsg(CMapiLib.mapi_trace_log(mid.Ptr, filename));
}
/// <summary>
/// Return the current value of the trace flag.
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static int MapiGetTrace(MapiConnection mid)
{
return(CMapiLib.mapi_get_trace(mid.Ptr));
}
/// <summary>
///
/// </summary>
/// <param name="connection"></param>
/// <param name="query"></param>
/// <returns></returns>
/// <exception cref="MonetDbException"></exception>
public static MapiHdl GetQueryHandle(MapiConnection connection, string query)
{
var queryHandle = MapiLib.MapiQuery(connection, query);
DieQueryError(connection, queryHandle);
return queryHandle;
}
/// <summary>
/// Log the interaction between the client and server for offline inspection.
/// Beware that the log file overwrites any previous log. It is not intended for recovery.
/// </summary>
/// <param name="mid"></param>
/// <param name="filename"></param>
/// <returns></returns>
public static MapiMsg MapiTraceLog(MapiConnection mid, string filename)
{
return(new MapiMsg(CMapiLib.mapi_trace_log(mid.Ptr, filename)));
}
/// <summary>
/// Write the error message obtained from mserver to a file.
/// </summary>
/// <param name="mid"></param>
/// <param name="fs"></param>
/// <returns></returns>
public static MapiMsg MapiExplain(MapiConnection mid, FileStream fs)
{
return new MapiMsg(CMapiLib.mapi_explain(mid.Ptr, fs.SafeFileHandle));
}
/// <summary>
///
/// </summary>
/// <param name="mid"></param>
/// <param name="fnr"></param>
/// <returns></returns>
public static int MapiGetlen(MapiConnection mid, int fnr)
{
return(CMapiLib.mapi_get_len(mid.Ptr, fnr));
}
/// <summary>
///
/// </summary>
/// <param name="mid"></param>
/// <param name="fnr"></param>
/// <returns></returns>
public static int MapiGetlen(MapiConnection mid, int fnr)
{
return CMapiLib.mapi_get_len(mid.Ptr, fnr);
}
/// <summary>
///
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static string MapiGetDbName(MapiConnection mid)
{
return(Marshal.PtrToStringAnsi(CMapiLib.mapi_get_dbname(mid.Ptr)));
}
/// <summary>
///
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static string MapiGetUser(MapiConnection mid)
{
return Marshal.PtrToStringAnsi(CMapiLib.mapi_get_user(mid.Ptr));
}
/// <summary>
///
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static string MapiGetMotd(MapiConnection mid)
{
return(Marshal.PtrToStringAnsi(CMapiLib.mapi_get_motd(mid.Ptr)));
}
/// <summary>
/// Move the query to a newly allocated query handle (which is returned).
/// Possibly interact with the back-end to prepare the query for execution.
/// </summary>
/// <param name="mid"></param>
/// <param name="command"></param>
/// <returns></returns>
public static MapiHdl MapiPrepare(MapiConnection mid, string command)
{
return new MapiHdl(CMapiLib.mapi_prepare(mid.Ptr, command));
}
/// <summary>
/// Set the autocommit flag (default is on).
/// This only has an effect when the language is SQL.
/// In that case, the server commits after each statement sent to the server.
/// </summary>
/// <param name="mid"></param>
/// <param name="autocommit"></param>
/// <returns></returns>
public static MapiMsg MapiSetAutocommit(MapiConnection mid, int autocommit)
{
return new MapiMsg(CMapiLib.mapi_setAutocommit(mid.Ptr, autocommit));
}
/// <summary>
/// Send the Command to the database server replacing the placeholders (?) by the string arguments presented.
/// </summary>
/// <param name="mid"></param>
/// <param name="command"></param>
/// <param name="args"></param>
/// <returns></returns>
public static MapiHdl MapiQueryArray(MapiConnection mid, string command, string[] args)
{
return new MapiHdl(CMapiLib.mapi_query_array(mid.Ptr, command, args));
}
/// <summary>
/// Return a list of accessible database tables.
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static string[] MapiTables(MapiConnection mid)
{
var pptr = CMapiLib.mapi_tables(mid.Ptr);
var ptr = Marshal.ReadIntPtr(pptr);
var exploded = new List<string>();
do
{
exploded.Add(Marshal.PtrToStringAnsi(ptr));
pptr = new IntPtr((int)pptr + IntPtr.Size);
ptr = Marshal.ReadIntPtr(pptr);
} while (ptr != IntPtr.Zero);
return exploded.ToArray();
}
/// <summary>
/// Close the current channel (if still open) and re-establish a fresh connection.
/// This will remove all global session variables.
/// </summary>
/// <param name="mapi"></param>
/// <returns></returns>
public static MapiMsg MapiReconnect(MapiConnection mapi)
{
return new MapiMsg(CMapiLib.mapi_reconnect(mapi.Ptr));
}
/// <summary>
/// Similar to mapi_query_array(), except that the response of the
/// server is not analyzed, but shipped immediately to the file indicated.
/// </summary>
/// <param name="mid"></param>
/// <param name="command"></param>
/// <param name="args"></param>
/// <param name="fs"></param>
/// <returns></returns>
public static MapiHdl MapiQuickQueryArray(MapiConnection mid, string command, string[] args, FileStream fs)
{
return(new MapiHdl(CMapiLib.mapi_quick_query_array(mid.Ptr, command, args, fs.SafeFileHandle)));
}
/// <summary>
/// Send the request for processing and fetch a limited number of tuples
/// (determined by the window size) to assess any erroneous situation.
/// Thereafter, prepare for continual reading of tuples from the stream,
/// until an error occurs. Each time a tuple arrives, the cache is shifted one.
/// </summary>
/// <param name="mid"></param>
/// <param name="command"></param>
/// <param name="windowSize"></param>
/// <returns></returns>
public static MapiHdl MapiStreamQuery(MapiConnection mid, string command, int windowSize)
{
return new MapiHdl(CMapiLib.mapi_stream_query(mid.Ptr, command, windowSize));
}
/// <summary>
/// Test availability of the server. Returns zero upon success.
/// </summary>
/// <param name="mapi"></param>
/// <returns></returns>
public static MapiMsg MapiPing(MapiConnection mapi)
{
return(new MapiMsg(CMapiLib.mapi_ping(mapi.Ptr)));
}
/// <summary>
/// Set the trace flag to monitor interaction with the server.
/// </summary>
/// <param name="mid"></param>
/// <param name="flag"></param>
/// <returns></returns>
public static MapiMsg MapiTrace(MapiConnection mid, int flag)
{
return new MapiMsg(CMapiLib.mapi_trace(mid.Ptr, flag));
}
/// <summary>
///
/// </summary>
/// <param name="connection"></param>
public static void CloseConnectionHandle(MapiConnection connection)
{
MapiLib.MapiDisconnect(connection);
MapiLib.MapiDestroy(connection);
}
/// <summary>
/// A limited number of tuples are pre-fetched after each execute().
/// If maxrows is negative, all rows will be fetched before the application is
/// permitted to continue. Once the cache is filled, a number of tuples are shuffled to
/// make room for new ones, but taking into account non-read elements.
/// Filling the cache quicker than reading leads to an error.
/// </summary>
/// <param name="mid"></param>
/// <param name="maxrows"></param>
/// <returns></returns>
public static MapiMsg MapiCacheLimit(MapiConnection mid, int maxrows)
{
return new MapiMsg(CMapiLib.mapi_cache_limit(mid.Ptr, maxrows));
}
/// <summary>
/// Send the Command to the database server represented by mid.
/// This function returns a query handle with which the results of the
/// query can be retrieved. The handle should be closed with mapi_close_handle().
/// The command response is buffered for consumption, c.f. mapi\_fetch\_row().
/// </summary>
/// <param name="mapi"></param>
/// <param name="command"></param>
/// <returns></returns>
public static MapiHdl MapiQuery(MapiConnection mapi, string command)
{
return(new MapiHdl(CMapiLib.mapi_query(mapi.Ptr, command)));
}
/// <summary>
///
/// </summary>
/// <param name="connection"></param>
public static void CloseConnectionHandle(MapiConnection connection)
{
MapiLib.MapiDisconnect(connection);
MapiLib.MapiDestroy(connection);
}
/// <summary>
/// Terminate the session described by mid if not already done so, and free all resources.
/// The handle cannot be used anymore.
/// </summary>
/// <param name="mapi"></param>
/// <returns></returns>
public static MapiMsg MapiDestroy(MapiConnection mapi)
{
return new MapiMsg(CMapiLib.mapi_destroy(mapi.Ptr));
}
/// <summary>
/// Return the last error code or 0 if there is no error.
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static MapiMsg MapiError(MapiConnection mid)
{
return new MapiMsg(CMapiLib.mapi_error(mid.Ptr));
}
/// <summary>
/// Return a pointer to the last error message.
/// </summary>
/// <param name="mid"></param>
/// <returns></returns>
public static string MapiErrorString(MapiConnection mid)
{
return Marshal.PtrToStringAnsi(CMapiLib.mapi_error_str(mid.Ptr));
}
/// <summary>
///
/// </summary>
public void Open()
{
if (State == ConnectionState.Open)
throw new MonetDbException("Connection already open.");
_connection = MapiFactory.GetConnectionhandle(_database.ConnectionInfo);
State = ConnectionState.Open;
}
/// <summary>
/// Terminate the session described by mid if not already done so, and free all resources.
/// The handle cannot be used anymore.
/// </summary>
/// <param name="mapi"></param>
/// <returns></returns>
public static MapiMsg MapiDestroy(MapiConnection mapi)
{
return(new MapiMsg(CMapiLib.mapi_destroy(mapi.Ptr)));
}
