1 files changed, 81 insertions, 0 deletions
diff --git a/storage/heap/hp_extra.c b/storage/heap/hp_extra.c
new file mode 100644
index 00000000000..dd41d6c5f19
--- /dev/null
+++ b/storage/heap/hp_extra.c
@@ -0,0 +1,81 @@
+/* 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 */
+
+/* Extra functions we want to do with a database */
+/* - Set flags for quicker databasehandler */
+/* - Set databasehandler to normal */
+/* - Reset recordpointers as after open database */
+
+#include "heapdef.h"
+
+static void heap_extra_keyflag(register HP_INFO *info,
+                               enum ha_extra_function function);
+
+
+	/* set extra flags for database */
+
+int heap_extra(register HP_INFO *info, enum ha_extra_function function)
+{
+  DBUG_ENTER("heap_extra");
+
+  switch (function) {
+  case HA_EXTRA_RESET:
+  case HA_EXTRA_RESET_STATE:
+    info->lastinx= -1;
+    info->current_record= (ulong) ~0L;
+    info->current_hash_ptr=0;
+    info->update=0;
+    break;
+  case HA_EXTRA_NO_READCHECK:
+    info->opt_flag&= ~READ_CHECK_USED;	/* No readcheck */
+    break;
+  case HA_EXTRA_READCHECK:
+    info->opt_flag|= READ_CHECK_USED;
+    break;
+  case HA_EXTRA_CHANGE_KEY_TO_UNIQUE:
+  case HA_EXTRA_CHANGE_KEY_TO_DUP:
+    heap_extra_keyflag(info, function);
+    break;
+  default:
+    break;
+  }
+  DBUG_RETURN(0);
+} /* heap_extra */
+
+
+/*
+    Start/Stop Inserting Duplicates Into a Table, WL#1648.
+ */
+static void heap_extra_keyflag(register HP_INFO *info,
+                               enum ha_extra_function function)
+{
+  uint  idx;
+
+  for (idx= 0; idx< info->s->keys; idx++)
+  {
+    switch (function) {
+    case HA_EXTRA_CHANGE_KEY_TO_UNIQUE:
+      info->s->keydef[idx].flag|= HA_NOSAME;
+      break;
+    case HA_EXTRA_CHANGE_KEY_TO_DUP:
+      info->s->keydef[idx].flag&= ~(HA_NOSAME);
+      break;
+    default:
+      break;
+    }
+  }
+}
+