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-rw-r--r--isam/rsame.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/isam/rsame.c b/isam/rsame.c
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index 00000000000..fe617cf258c
--- /dev/null
+++ b/isam/rsame.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
+
+/* L{ser nuvarande record med direktl{sning */
+/* Klarar b}de poster l{sta med nyckel och rrnd. */
+
+#include "isamdef.h"
+
+ /* Funktionen ger som resultat:
+ 0 = Ok.
+ 1 = Posten borttagen
+ -1 = EOF (eller motsvarande: se errno) */
+
+
+int nisam_rsame(N_INFO *info, byte *record, int inx)
+
+
+ /* If inx >= 0 find record using key */
+{
+ DBUG_ENTER("nisam_rsame");
+
+ if (inx >= (int) info->s->state.keys || inx < -1)
+ {
+ my_errno=HA_ERR_WRONG_INDEX;
+ DBUG_RETURN(-1);
+ }
+ if (info->lastpos == NI_POS_ERROR || info->update & HA_STATE_DELETED)
+ {
+ my_errno=HA_ERR_KEY_NOT_FOUND; /* No current record */
+ DBUG_RETURN(-1);
+ }
+ info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
+
+ /* L{s record fr}n datafilen */
+
+#ifndef NO_LOCKING
+ if (_nisam_readinfo(info,F_RDLCK,1))
+ DBUG_RETURN(-1);
+#endif
+
+ if (inx >= 0)
+ {
+ info->lastinx=inx;
+ VOID(_nisam_make_key(info,(uint) inx,info->lastkey,record,info->lastpos));
+ VOID(_nisam_search(info,info->s->keyinfo+inx,info->lastkey,0,SEARCH_SAME,
+ info->s->state.key_root[inx]));
+ }
+
+ if ((*info->read_record)(info,info->lastpos,record) == 0)
+ DBUG_RETURN(0);
+ if (my_errno == HA_ERR_RECORD_DELETED)
+ {
+ my_errno=HA_ERR_KEY_NOT_FOUND;
+ DBUG_RETURN(1);
+ }
+ DBUG_RETURN(-1);
+} /* nisam_rsame */