Collection of changes per Bar and Serg.

acinclude.m4

@@ -1525,7 +1525,7 @@ AC_DEFUN([MYSQL_CHECK_BLACKHOLEDB], [
 
   case "$blackholedb" in
     yes )
-      AC_DEFINE([HAVE_BLACKHOLE_DB], [1], [Builds Blackhole DB])
+      AC_DEFINE([HAVE_BLACKHOLE_DB], [1], [Builds Blackhole Storage Engine])
       AC_MSG_RESULT([yes])
       [blackholedb=yes]
       ;;

mysql-test/r/blackhole.result

@@ -20,6 +20,8 @@ fld5 char(35) DEFAULT '' NOT NULL,
 fld6 char(4) DEFAULT '' NOT NULL,
 primary key (auto)
 ) ENGINE=blackhole;
+INSERT INTO t2 VALUES (1192,068305,00,'Colombo','hardware','colicky','');
+INSERT INTO t2 VALUES (1193,000000,00,'nondecreasing','implant','thrillingly','');
 select t2.fld3 from t2 where companynr = 58 and fld3 like "%imaginable%";
 fld3
 select fld3 from t2 where fld3 like "%cultivation" ;
@@ -81,3 +83,4 @@ Full-text indexes	are called collections
 Only MyISAM tables	support collections
 select * from t1 where MATCH(a,b) AGAINST ("only");
 a	b
+drop table if exists t1,t2;

sql/ha_blackhole.cc

@@ -88,6 +88,7 @@ int ha_blackhole::rnd_next(byte *buf)
 int ha_blackhole::rnd_pos(byte * buf, byte *pos)
 {
   DBUG_ENTER("ha_blackhole::rnd_pos");
+  DBUG_ASSERT(0);
   DBUG_RETURN(0);
 }
 
@@ -95,6 +96,7 @@ int ha_blackhole::rnd_pos(byte * buf, byte *pos)
 void ha_blackhole::position(const byte *record)
 {
   DBUG_ENTER("ha_blackhole::position");
+  DBUG_ASSERT(0);
   DBUG_VOID_RETURN;
 }
 
@@ -127,38 +129,60 @@ THR_LOCK_DATA **ha_blackhole::store_lock(THD *thd,
                                          THR_LOCK_DATA **to,
                                          enum thr_lock_type lock_type)
 {
-  if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK) 
-  {
-    /* 
-      Here is where we get into the guts of a row level lock.
-      If TL_UNLOCK is set 
-      If we are not doing a LOCK TABLE or DISCARD/IMPORT
-      TABLESPACE, then allow multiple writers 
-    */
-
-    if ((lock_type >= TL_WRITE_CONCURRENT_INSERT &&
-         lock_type <= TL_WRITE) && !thd->in_lock_tables
-        && !thd->tablespace_op)
-      lock_type = TL_WRITE_ALLOW_WRITE;
-
-    /* 
-      In queries of type INSERT INTO t1 SELECT ... FROM t2 ...
-      MySQL would use the lock TL_READ_NO_INSERT on t2, and that
-      would conflict with TL_WRITE_ALLOW_WRITE, blocking all inserts
-      to t2. Convert the lock to a normal read lock to allow
-      concurrent inserts to t2. 
-    */
-
-    if (lock_type == TL_READ_NO_INSERT && !thd->in_lock_tables) 
-      lock_type = TL_READ;
-
-    lock.type=lock_type;
-  }
-
   *to++= &lock;
 
   return to;
 }
 
 
+int ha_blackhole::index_read(byte * buf, const byte * key,
+                             uint key_len, enum ha_rkey_function find_flag)
+{
+  DBUG_ENTER("ha_blackhole::index_read");
+  DBUG_RETURN(0);
+}
+
+
+int ha_blackhole::index_read_idx(byte * buf, uint idx, const byte * key,
+                                 uint key_len, enum ha_rkey_function find_flag)
+{
+  DBUG_ENTER("ha_blackhole::index_read_idx");
+  DBUG_RETURN(HA_ERR_END_OF_FILE);
+}
+
+
+int ha_blackhole::index_read_last(byte * buf, const byte * key, uint key_len)
+{
+  DBUG_ENTER("ha_blackhole::index_read_last");
+  DBUG_RETURN(HA_ERR_END_OF_FILE);
+}
+
+
+int ha_blackhole::index_next(byte * buf)
+{
+  DBUG_ENTER("ha_blackhole::index_next");
+  DBUG_RETURN(HA_ERR_END_OF_FILE);
+}
+
+
+int ha_blackhole::index_prev(byte * buf)
+{
+  DBUG_ENTER("ha_blackhole::index_prev");
+  DBUG_RETURN(HA_ERR_END_OF_FILE);
+}
+
+
+int ha_blackhole::index_first(byte * buf)
+{
+  DBUG_ENTER("ha_blackhole::index_first");
+  DBUG_RETURN(HA_ERR_END_OF_FILE);
+}
+
+
+int ha_blackhole::index_last(byte * buf)
+{
+  DBUG_ENTER("ha_blackhole::index_last");
+  DBUG_RETURN(HA_ERR_END_OF_FILE);
+}
+
 #endif /* HAVE_BLACKHOLE_DB */

sql/ha_blackhole.h

@@ -68,6 +68,15 @@ public:
   int rnd_init(bool scan);
   int rnd_next(byte *buf);
   int rnd_pos(byte * buf, byte *pos);
+  int index_read(byte * buf, const byte * key,
+                 uint key_len, enum ha_rkey_function find_flag);
+  int index_read_idx(byte * buf, uint idx, const byte * key,
+                     uint key_len, enum ha_rkey_function find_flag);
+  int index_read_last(byte * buf, const byte * key, uint key_len);
+  int index_next(byte * buf);
+  int index_prev(byte * buf);
+  int index_first(byte * buf);
+  int index_last(byte * buf);
   void position(const byte *record);
   void info(uint flag);
   int external_lock(THD *thd, int lock_type);