/*
* __curfile_equals --
* WT_CURSOR->equals method for the btree cursor type.
*/
static int
__curfile_equals(WT_CURSOR *a, WT_CURSOR *b, int *equalp)
{
WT_CURSOR_BTREE *cbt;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbt = (WT_CURSOR_BTREE *)a;
CURSOR_API_CALL(a, session, equals, cbt->btree);
/*
* Check both cursors are a "file:" type then call the underlying
* function, it can handle cursors pointing to different objects.
*/
if (!WT_PREFIX_MATCH(a->internal_uri, "file:") ||
!WT_PREFIX_MATCH(b->internal_uri, "file:"))
WT_ERR_MSG(session, EINVAL,
"Cursors must reference the same object");
WT_ERR(__cursor_checkkey(a));
WT_ERR(__cursor_checkkey(b));
ret = __wt_btcur_equals(
(WT_CURSOR_BTREE *)a, (WT_CURSOR_BTREE *)b, equalp);
err: API_END_RET(session, ret);
}
/*
* __curfile_modify --
* WT_CURSOR->modify method for the btree cursor type.
*/
static int
__curfile_modify(WT_CURSOR *cursor, WT_MODIFY *entries, int nentries)
{
WT_CURSOR_BTREE *cbt;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbt = (WT_CURSOR_BTREE *)cursor;
CURSOR_UPDATE_API_CALL_BTREE(cursor, session, modify, cbt->btree);
WT_ERR(__cursor_checkkey(cursor));
/* Check for a rational modify vector count. */
if (nentries <= 0)
WT_ERR_MSG(session, EINVAL,
"Illegal modify vector with %d entries", nentries);
WT_ERR(__wt_btcur_modify(cbt, entries, nentries));
/*
* Modify maintains a position, key and value. Unlike update, it's not
* always an internal value.
*/
WT_ASSERT(session,
F_MASK(cursor, WT_CURSTD_KEY_SET) == WT_CURSTD_KEY_INT);
WT_ASSERT(session, F_MASK(cursor, WT_CURSTD_VALUE_SET) != 0);
err: CURSOR_UPDATE_API_END(session, ret);
return (ret);
}
/*
* __curfile_remove --
* WT_CURSOR->remove method for the btree cursor type.
*/
static int
__curfile_remove(WT_CURSOR *cursor)
{
WT_CURSOR_BTREE *cbt;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbt = (WT_CURSOR_BTREE *)cursor;
CURSOR_REMOVE_API_CALL(cursor, session, cbt->btree);
WT_ERR(__cursor_checkkey(cursor));
WT_ERR(__wt_btcur_remove(cbt));
/*
* Remove with a search-key is fire-and-forget, no position and no key.
* Remove starting from a position maintains the position and a key.
* We don't know which it was at this layer, so can only assert the key
* is not set at all, or internal. There's never a value.
*/
WT_ASSERT(session,
F_MASK(cursor, WT_CURSTD_KEY_SET) == 0 ||
F_MASK(cursor, WT_CURSTD_KEY_SET) == WT_CURSTD_KEY_INT);
WT_ASSERT(session, F_MASK(cursor, WT_CURSTD_VALUE_SET) == 0);
err: CURSOR_UPDATE_API_END(session, ret);
return (ret);
}
/*
* __curfile_insert --
* WT_CURSOR->insert method for the btree cursor type.
*/
static int
__curfile_insert(WT_CURSOR *cursor)
{
WT_CURSOR_BTREE *cbt;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbt = (WT_CURSOR_BTREE *)cursor;
CURSOR_UPDATE_API_CALL_BTREE(cursor, session, insert, cbt->btree);
if (!F_ISSET(cursor, WT_CURSTD_APPEND))
WT_ERR(__cursor_checkkey(cursor));
WT_ERR(__cursor_checkvalue(cursor));
WT_ERR(__wt_btcur_insert(cbt));
/*
* Insert maintains no position, key or value (except for column-store
* appends, where we are returning a key).
*/
WT_ASSERT(session,
(F_ISSET(cursor, WT_CURSTD_APPEND) &&
F_MASK(cursor, WT_CURSTD_KEY_SET) == WT_CURSTD_KEY_INT) ||
(!F_ISSET(cursor, WT_CURSTD_APPEND) &&
F_MASK(cursor, WT_CURSTD_KEY_SET) == 0));
err: CURSOR_UPDATE_API_END(session, ret);
return (ret);
}
/*
* __curindex_compare --
* WT_CURSOR->compare method for the index cursor type.
*/
static int
__curindex_compare(WT_CURSOR *a, WT_CURSOR *b, int *cmpp)
{
WT_CURSOR_INDEX *cindex;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cindex = (WT_CURSOR_INDEX *)a;
JOINABLE_CURSOR_API_CALL(a, session, compare, NULL);
/* Check both cursors are "index:" type. */
if (!WT_PREFIX_MATCH(a->uri, "index:") ||
strcmp(a->uri, b->uri) != 0)
WT_ERR_MSG(session, EINVAL,
"Cursors must reference the same object");
WT_ERR(__cursor_checkkey(a));
WT_ERR(__cursor_checkkey(b));
ret = __wt_compare(
session, cindex->index->collator, &a->key, &b->key, cmpp);
err: API_END_RET(session, ret);
}
/*
* __wt_curfile_insert_check --
* WT_CURSOR->insert_check method for the btree cursor type.
*/
int
__wt_curfile_insert_check(WT_CURSOR *cursor)
{
WT_CURSOR_BTREE *cbt;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbt = (WT_CURSOR_BTREE *)cursor;
CURSOR_UPDATE_API_CALL_BTREE(cursor, session, update, cbt->btree);
WT_ERR(__cursor_checkkey(cursor));
ret = __wt_btcur_insert_check(cbt);
err: CURSOR_UPDATE_API_END(session, ret);
return (ret);
}
/*
* __curfile_search_near --
* WT_CURSOR->search_near method for the btree cursor type.
*/
static int
__curfile_search_near(WT_CURSOR *cursor, int *exact)
{
WT_CURSOR_BTREE *cbt;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbt = (WT_CURSOR_BTREE *)cursor;
CURSOR_API_CALL(cursor, session, search_near, cbt->btree);
WT_ERR(__cursor_checkkey(cursor));
WT_ERR(__wt_btcur_search_near(cbt, exact));
/* Search-near maintains a position, key and value. */
WT_ASSERT(session,
F_MASK(cursor, WT_CURSTD_KEY_SET) == WT_CURSTD_KEY_INT &&
F_MASK(cursor, WT_CURSTD_VALUE_SET) == WT_CURSTD_VALUE_INT);
err: API_END_RET(session, ret);
}
/*
* __curfile_update --
* WT_CURSOR->update method for the btree cursor type.
*/
static int
__curfile_update(WT_CURSOR *cursor)
{
WT_CURSOR_BTREE *cbt;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbt = (WT_CURSOR_BTREE *)cursor;
CURSOR_UPDATE_API_CALL_BTREE(cursor, session, update, cbt->btree);
WT_ERR(__cursor_checkkey(cursor));
WT_ERR(__cursor_checkvalue(cursor));
WT_ERR(__wt_btcur_update(cbt));
/* Update maintains a position, key and value. */
WT_ASSERT(session,
F_MASK(cursor, WT_CURSTD_KEY_SET) == WT_CURSTD_KEY_INT &&
F_MASK(cursor, WT_CURSTD_VALUE_SET) == WT_CURSTD_VALUE_INT);
err: CURSOR_UPDATE_API_END(session, ret);
return (ret);
}
/*
* __curfile_reserve --
* WT_CURSOR->reserve method for the btree cursor type.
*/
static int
__curfile_reserve(WT_CURSOR *cursor)
{
WT_CURSOR_BTREE *cbt;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cbt = (WT_CURSOR_BTREE *)cursor;
CURSOR_UPDATE_API_CALL_BTREE(cursor, session, reserve, cbt->btree);
WT_ERR(__cursor_checkkey(cursor));
WT_ERR(__wt_txn_context_check(session, true));
WT_ERR(__wt_btcur_reserve(cbt));
/*
* Reserve maintains a position and key, which doesn't match the library
* API, where reserve maintains a value. Fix the API by searching after
* each successful reserve operation.
*/
WT_ASSERT(session,
F_MASK(cursor, WT_CURSTD_KEY_SET) == WT_CURSTD_KEY_INT);
WT_ASSERT(session, F_MASK(cursor, WT_CURSTD_VALUE_SET) == 0);
err: CURSOR_UPDATE_API_END(session, ret);
/*
* The application might do a WT_CURSOR.get_value call when we return,
* so we need a value and the underlying functions didn't set one up.
* For various reasons, those functions may not have done a search and
* any previous value in the cursor might race with WT_CURSOR.reserve
* (and in cases like LSM, the reserve never encountered the original
* key). For simplicity, repeat the search here.
*/
return (ret == 0 ? cursor->search(cursor) : ret);
}
