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/*-
* Copyright (c) 2014-2015 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __curbulk_insert_fix --
* Fixed-length column-store bulk cursor insert.
*/
static int
__curbulk_insert_fix(WT_CURSOR *cursor)
{
WT_BTREE *btree;
WT_CURSOR_BULK *cbulk;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbulk = (WT_CURSOR_BULK *)cursor;
btree = cbulk->cbt.btree;
/*
* Bulk cursor inserts are updates, but don't need auto-commit
* transactions because they are single-threaded and not visible
* until the bulk cursor is closed.
*/
CURSOR_API_CALL(cursor, session, insert, btree);
WT_CURSOR_NEEDVALUE(cursor);
WT_ERR(__wt_bulk_insert_fix(session, cbulk));
WT_STAT_FAST_DATA_INCR(session, cursor_insert_bulk);
err: API_END_RET(session, ret);
}
/*
* __curbulk_insert_var --
* Variable-length column-store bulk cursor insert.
*/
static int
__curbulk_insert_var(WT_CURSOR *cursor)
{
WT_BTREE *btree;
WT_CURSOR_BULK *cbulk;
WT_DECL_RET;
WT_SESSION_IMPL *session;
bool duplicate;
cbulk = (WT_CURSOR_BULK *)cursor;
btree = cbulk->cbt.btree;
/*
* Bulk cursor inserts are updates, but don't need auto-commit
* transactions because they are single-threaded and not visible
* until the bulk cursor is closed.
*/
CURSOR_API_CALL(cursor, session, insert, btree);
WT_CURSOR_NEEDVALUE(cursor);
/*
* If this isn't the first value inserted, compare it against the last
* value and increment the RLE count.
*
* Instead of a "first time" variable, I'm using the RLE count, because
* it is only zero before the first row is inserted.
*/
duplicate = false;
if (cbulk->rle != 0) {
if (cbulk->last.size == cursor->value.size &&
memcmp(cbulk->last.data, cursor->value.data,
cursor->value.size) == 0) {
++cbulk->rle;
duplicate = true;
} else
WT_ERR(__wt_bulk_insert_var(session, cbulk));
}
/*
* Save a copy of the value for the next comparison and reset the RLE
* counter.
*/
if (!duplicate) {
WT_ERR(__wt_buf_set(session,
&cbulk->last, cursor->value.data, cursor->value.size));
cbulk->rle = 1;
}
WT_STAT_FAST_DATA_INCR(session, cursor_insert_bulk);
err: API_END_RET(session, ret);
}
/*
* __bulk_row_keycmp_err --
* Error routine when keys inserted out-of-order.
*/
static int
__bulk_row_keycmp_err(WT_CURSOR_BULK *cbulk)
{
WT_CURSOR *cursor;
WT_DECL_ITEM(a);
WT_DECL_ITEM(b);
WT_DECL_RET;
WT_SESSION_IMPL *session;
session = (WT_SESSION_IMPL *)cbulk->cbt.iface.session;
cursor = &cbulk->cbt.iface;
WT_ERR(__wt_scr_alloc(session, 512, &a));
WT_ERR(__wt_scr_alloc(session, 512, &b));
WT_ERR(__wt_buf_set_printable(
session, a, cursor->key.data, cursor->key.size));
WT_ERR(__wt_buf_set_printable(
session, b, cbulk->last.data, cbulk->last.size));
WT_ERR_MSG(session, EINVAL,
"bulk-load presented with out-of-order keys: %.*s compares smaller "
"than previously inserted key %.*s",
(int)a->size, (const char *)a->data,
(int)b->size, (const char *)b->data);
err: __wt_scr_free(session, &a);
__wt_scr_free(session, &b);
return (ret);
}
/*
* __curbulk_insert_row --
* Row-store bulk cursor insert, with key-sort checks.
*/
static int
__curbulk_insert_row(WT_CURSOR *cursor)
{
WT_BTREE *btree;
WT_CURSOR_BULK *cbulk;
WT_DECL_RET;
WT_SESSION_IMPL *session;
int cmp;
cbulk = (WT_CURSOR_BULK *)cursor;
btree = cbulk->cbt.btree;
/*
* Bulk cursor inserts are updates, but don't need auto-commit
* transactions because they are single-threaded and not visible
* until the bulk cursor is closed.
*/
CURSOR_API_CALL(cursor, session, insert, btree);
WT_CURSOR_CHECKKEY(cursor);
WT_CURSOR_CHECKVALUE(cursor);
/*
* If this isn't the first key inserted, compare it against the last key
* to ensure the application doesn't accidentally corrupt the table.
*
* Instead of a "first time" variable, I'm using the RLE count, because
* it is only zero before the first row is inserted.
*/
if (cbulk->rle != 0) {
WT_ERR(__wt_compare(session,
btree->collator, &cursor->key, &cbulk->last, &cmp));
if (cmp <= 0)
WT_ERR(__bulk_row_keycmp_err(cbulk));
}
/*
* Save a copy of the key for the next comparison and set the RLE
* counter.
*/
WT_ERR(__wt_buf_set(session,
&cbulk->last, cursor->key.data, cursor->key.size));
cbulk->rle = 1;
WT_ERR(__wt_bulk_insert_row(session, cbulk));
WT_STAT_FAST_DATA_INCR(session, cursor_insert_bulk);
err: API_END_RET(session, ret);
}
/*
* __curbulk_insert_row_skip_check --
* Row-store bulk cursor insert, without key-sort checks.
*/
static int
__curbulk_insert_row_skip_check(WT_CURSOR *cursor)
{
WT_BTREE *btree;
WT_CURSOR_BULK *cbulk;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbulk = (WT_CURSOR_BULK *)cursor;
btree = cbulk->cbt.btree;
/*
* Bulk cursor inserts are updates, but don't need auto-commit
* transactions because they are single-threaded and not visible
* until the bulk cursor is closed.
*/
CURSOR_API_CALL(cursor, session, insert, btree);
WT_CURSOR_NEEDKEY(cursor);
WT_CURSOR_NEEDVALUE(cursor);
WT_ERR(__wt_bulk_insert_row(session, cbulk));
WT_STAT_FAST_DATA_INCR(session, cursor_insert_bulk);
err: API_END_RET(session, ret);
}
/*
* __wt_curbulk_init --
* Initialize a bulk cursor.
*/
int
__wt_curbulk_init(WT_SESSION_IMPL *session,
WT_CURSOR_BULK *cbulk, bool bitmap, bool skip_sort_check)
{
WT_CURSOR *c;
WT_CURSOR_BTREE *cbt;
c = &cbulk->cbt.iface;
cbt = &cbulk->cbt;
/* Bulk cursors only support insert and close (reset is a no-op). */
__wt_cursor_set_notsup(c);
switch (cbt->btree->type) {
case BTREE_COL_FIX:
c->insert = __curbulk_insert_fix;
break;
case BTREE_COL_VAR:
c->insert = __curbulk_insert_var;
break;
case BTREE_ROW:
c->insert = skip_sort_check ?
__curbulk_insert_row_skip_check : __curbulk_insert_row;
break;
WT_ILLEGAL_VALUE(session);
}
cbulk->bitmap = bitmap;
if (bitmap)
F_SET(c, WT_CURSTD_RAW);
return (__wt_bulk_init(session, cbulk));
}
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