- Temporary fix for MDEV-7304.

modified:
  storage/connect/rcmsg.c

- Avoid Memory copying when reading an ODBC table when the entire table
  is already in the result set.
modified:
  storage/connect/odbconn.cpp
  storage/connect/odbconn.h
  storage/connect/tabodbc.cpp
  storage/connect/tabodbc.h

storage/connect/odbconn.cpp

@@ -922,6 +922,8 @@ ODBConn::ODBConn(PGLOBAL g, TDBODBC *tdbp)
   m_Updatable = true;
   m_Transact = false;
   m_Scrollable = (tdbp) ? tdbp->Scrollable : false;
+  m_First = true;
+  m_Full = false;
   m_IDQuoteChar[0] = '"';
   m_IDQuoteChar[1] = 0;
 //*m_ErrMsg = '\0';
@@ -1509,6 +1511,16 @@ int ODBConn::Fetch()
 
     irc = (rc == SQL_NO_DATA_FOUND) ? 0 : (int)crow;
 
+    if (m_First) {
+      // First fetch. Check whether the full table was read
+      if ((m_Full = irc < (signed)m_RowsetSize)) {
+        m_Tdb->Memory = 0;     // Not needed anymore
+        m_Rows = irc;          // Table size
+        } // endif m_Full
+
+      m_First = false;
+      } // endif m_First
+
     if (m_Tdb->Memory == 1)
       m_Rows += irc;
 
@@ -2441,12 +2453,13 @@ PQRYRES ODBConn::AllocateResult(PGLOBAL g)
 /***********************************************************************/
 int ODBConn::Rewind(char *sql, ODBCCOL *tocols)
   {
-  int rc, rbuf = -1;
+  int rc, rbuf;
 
   if (!m_hstmt)
-    return rbuf;
-
-  if (m_Scrollable) {
+    rbuf = -1;
+  else if (m_Full)
+    rbuf = m_Rows;           // No need to "rewind"
+  else if (m_Scrollable) {
     SQLULEN  crow;
 
     try {
@@ -2458,6 +2471,7 @@ int ODBConn::Rewind(char *sql, ODBCCOL *tocols)
       rbuf = (int)crow;
     } catch(DBX *x) {
       strcpy(m_G->Message, x->GetErrorMessage(0));
+      rbuf = -1;
     } // end try/catch
 
   } else if (ExecDirectSQL(sql, tocols) >= 0)

storage/connect/odbconn.h

@@ -194,5 +194,6 @@ class ODBConn : public BLOCK {
   bool     m_Updatable;
   bool     m_Transact;
   bool     m_Scrollable;
-  bool     m_Memory;
+  bool     m_First;
+  bool     m_Full;
   }; // end of ODBConn class definition

storage/connect/rcmsg.c

@@ -31,6 +31,8 @@ char *GetMsgid(int id)
   {
   char *p = NULL;
 
+  // This conditional until a real fix is found for MDEV-7304
+#if defined(FRENCH)
   if (!stricmp(msglang(), "french"))
     switch (id) {
 #include "frids.h"
@@ -40,6 +42,7 @@ char *GetMsgid(int id)
     } // endswitch(id)
 
   else    // English
+#endif   // FRENCH
     switch (id) {
 #include "enids.h"
 #if defined(NEWMSG)

storage/connect/tabodbc.cpp

@@ -95,7 +95,7 @@ ODBCDEF::ODBCDEF(void)
   {
   Connect= Tabname= Tabschema= Tabcat= Srcdef= Qchar= Qrystr= Sep= NULL;
   Catver = Options = Quoted = Maxerr = Maxres = 0;
-  Scrollable = Xsrc = false;
+  Scrollable = Memory = Xsrc = false;
   }  // end of ODBCDEF constructor
 
 /***********************************************************************/
@@ -880,7 +880,7 @@ int TDBODBC::ReadDB(PGLOBAL g)
   if (To_Kindex) {
     // Direct access of ODBC tables is not implemented yet
     strcpy(g->Message, MSG(NO_ODBC_DIRECT));
-    longjmp(g->jumper[g->jump_level], GetAmType());
+    return RC_FX;
     } // endif To_Kindex
 
   /*********************************************************************/
@@ -1152,7 +1152,7 @@ void ODBCCOL::ReadColumn(PGLOBAL g)
       Name, tdbp->Rows, Bufp, Buf_Type, Value->GetCharString(buf));
     } // endif Trace
 
-put:
+ put:
   if (tdbp->Memory != 2)
     return;
 

storage/connect/tabodbc.h

@@ -1,7 +1,7 @@
 /*************** Tabodbc H Declares Source Code File (.H) **************/
-/*  Name: TABODBC.H   Version 1.6                                      */
+/*  Name: TABODBC.H   Version 1.7                                      */
 /*                                                                     */
-/*  (C) Copyright to the author Olivier BERTRAND          2000-2013    */
+/*  (C) Copyright to the author Olivier BERTRAND          2000-2014    */
 /*                                                                     */
 /*  This file contains the TDBODBC classes declares.                   */
 /***********************************************************************/