diff options
Diffstat (limited to 'heap/hp_rfirst.c')
| -rw-r--r-- | heap/hp_rfirst.c | 39 |
1 files changed, 32 insertions, 7 deletions
diff --git a/heap/hp_rfirst.c b/heap/hp_rfirst.c index b20918ff3a7..4b7098745a4 100644 --- a/heap/hp_rfirst.c +++ b/heap/hp_rfirst.c @@ -20,14 +20,39 @@ int heap_rfirst(HP_INFO *info, byte *record) { + HP_SHARE *share = info->s; + HP_KEYDEF *keyinfo = share->keydef + info->lastinx; + DBUG_ENTER("heap_rfirst"); - if (!(info->s->records)) + if (keyinfo->algorithm == HA_KEY_ALG_BTREE) { - my_errno=HA_ERR_END_OF_FILE; - DBUG_RETURN(my_errno); + byte *pos; + + if ((pos = tree_search_edge(&keyinfo->rb_tree, info->parents, + &info->last_pos, offsetof(TREE_ELEMENT, left)))) + { + memcpy(&pos, pos + keyinfo->ref_offs, sizeof(byte*)); + info->current_ptr = pos; + memcpy(record, pos, (size_t)share->reclength); + info->update = HA_STATE_AKTIV; + } + else + { + my_errno = HA_ERR_END_OF_FILE; + DBUG_RETURN(my_errno); + } + DBUG_RETURN(0); + } + else + { + if (!(info->s->records)) + { + my_errno=HA_ERR_END_OF_FILE; + DBUG_RETURN(my_errno); + } + info->current_record=0; + info->current_hash_ptr=0; + info->update=HA_STATE_PREV_FOUND; + DBUG_RETURN(heap_rnext(info,record)); } - info->current_record=0; - info->current_hash_ptr=0; - info->update=HA_STATE_PREV_FOUND; - DBUG_RETURN(heap_rnext(info,record)); } |