/*
* __col_instantiate --
* Update a column-store page entry based on a lookaside table update list.
*/
static int
__col_instantiate(WT_SESSION_IMPL *session,
uint64_t recno, WT_REF *ref, WT_CURSOR_BTREE *cbt, WT_UPDATE *upd)
{
/* Search the page and add updates. */
WT_RET(__wt_col_search(session, recno, ref, cbt));
WT_RET(__wt_col_modify(session, cbt, recno, NULL, upd, 0));
return (0);
}
/*
* __cursor_col_search --
* Column-store search from an application cursor.
*/
static inline int
__cursor_col_search(WT_SESSION_IMPL *session, WT_CURSOR_BTREE *cbt)
{
WT_DECL_RET;
WT_WITH_PAGE_INDEX(session,
ret = __wt_col_search(session, cbt->iface.recno, NULL, cbt));
return (ret);
}
/*
* __wt_btcur_update --
* Update a record in the tree.
*/
int
__wt_btcur_update(WT_CURSOR_BTREE *cbt)
{
WT_BTREE *btree;
WT_CURSOR *cursor;
WT_SESSION_IMPL *session;
int ret;
btree = cbt->btree;
cursor = &cbt->iface;
session = (WT_SESSION_IMPL *)cursor->session;
WT_BSTAT_INCR(session, cursor_updates);
if (btree->type == BTREE_ROW)
WT_RET(__cursor_size_chk(session, &cursor->key));
WT_RET(__cursor_size_chk(session, &cursor->value));
retry: __cursor_func_init(cbt, 1);
switch (btree->type) {
case BTREE_COL_FIX:
if (cursor->value.size != 1)
WT_RET_MSG(session, EINVAL,
"item size of %" PRIu32 " does not match "
"fixed-length file requirement of 1 byte",
cursor->value.size);
/* FALLTHROUGH */
case BTREE_COL_VAR:
WT_ERR(__wt_col_search(session, cbt, 1));
/*
* Update the record if it exists. Creating a record past the
* end of the tree in a fixed-length column-store implicitly
* fills the gap with empty records. Update the record in that
* case, the record exists.
*/
if ((cbt->compare != 0 || __cursor_invalid(cbt)) &&
!__cursor_fix_implicit(btree, cbt))
ret = WT_NOTFOUND;
else if ((ret = __wt_col_modify(session, cbt, 3)) == WT_RESTART)
goto retry;
break;
case BTREE_ROW:
/* Update the record it it exists. */
WT_ERR(__wt_row_search(session, cbt, 1));
if (cbt->compare != 0 || __cursor_invalid(cbt))
ret = WT_NOTFOUND;
else if ((ret = __wt_row_modify(session, cbt, 0)) == WT_RESTART)
goto retry;
break;
WT_ILLEGAL_VALUE(session);
}
err: __cursor_func_resolve(cbt, ret);
return (ret);
}
/*
* __wt_btcur_remove --
* Remove a record from the tree.
*/
int
__wt_btcur_remove(WT_CURSOR_BTREE *cbt)
{
WT_BTREE *btree;
WT_CURSOR *cursor;
WT_SESSION_IMPL *session;
int ret;
btree = cbt->btree;
cursor = &cbt->iface;
session = (WT_SESSION_IMPL *)cursor->session;
WT_BSTAT_INCR(session, cursor_removes);
if (btree->type == BTREE_ROW)
WT_RET(__cursor_size_chk(session, &cursor->key));
retry: __cursor_func_init(cbt, 1);
switch (btree->type) {
case BTREE_COL_FIX:
case BTREE_COL_VAR:
WT_ERR(__wt_col_search(session, cbt, 1));
/*
* Remove the record if it exists. Creating a record past the
* end of the tree in a fixed-length column-store implicitly
* fills the gap with empty records. Return success in that
* case, the record was deleted successfully.
*/
if (cbt->compare != 0 || __cursor_invalid(cbt))
ret =
__cursor_fix_implicit(btree, cbt) ? 0 : WT_NOTFOUND;
else if ((ret = __wt_col_modify(session, cbt, 2)) == WT_RESTART)
goto retry;
break;
case BTREE_ROW:
/* Remove the record if it exists. */
WT_ERR(__wt_row_search(session, cbt, 1));
if (cbt->compare != 0 || __cursor_invalid(cbt))
ret = WT_NOTFOUND;
else if ((ret = __wt_row_modify(session, cbt, 1)) == WT_RESTART)
goto retry;
break;
WT_ILLEGAL_VALUE(session);
}
err: __cursor_func_resolve(cbt, ret);
return (ret);
}
/*
* __wt_btcur_search --
* Search for a matching record in the tree.
*/
int
__wt_btcur_search(WT_CURSOR_BTREE *cbt)
{
WT_BTREE *btree;
WT_CURSOR *cursor;
WT_ITEM *val;
WT_SESSION_IMPL *session;
int ret;
btree = cbt->btree;
cursor = &cbt->iface;
session = (WT_SESSION_IMPL *)cursor->session;
WT_BSTAT_INCR(session, cursor_read);
if (btree->type == BTREE_ROW)
WT_RET(__cursor_size_chk(session, &cursor->key));
__cursor_func_init(cbt, 1);
WT_ERR(btree->type == BTREE_ROW ?
__wt_row_search(session, cbt, 0) :
__wt_col_search(session, cbt, 0));
if (cbt->compare != 0 || __cursor_invalid(cbt)) {
/*
* Creating a record past the end of the tree in a fixed-length
* column-store implicitly fills the gap with empty records.
*/
if (__cursor_fix_implicit(btree, cbt)) {
cbt->v = 0;
val = &cbt->iface.value;
val->data = &cbt->v;
val->size = 1;
} else
ret = WT_NOTFOUND;
} else
ret = __wt_kv_return(session, cbt, 0);
err: __cursor_func_resolve(cbt, ret);
return (ret);
}
/*
* __wt_btcur_insert --
* Insert a record into the tree.
*/
int
__wt_btcur_insert(WT_CURSOR_BTREE *cbt)
{
WT_BTREE *btree;
WT_CURSOR *cursor;
WT_SESSION_IMPL *session;
int ret;
btree = cbt->btree;
cursor = &cbt->iface;
session = (WT_SESSION_IMPL *)cursor->session;
WT_BSTAT_INCR(session, cursor_inserts);
if (btree->type == BTREE_ROW)
WT_RET(__cursor_size_chk(session, &cursor->key));
WT_RET(__cursor_size_chk(session, &cursor->value));
retry: __cursor_func_init(cbt, 1);
switch (btree->type) {
case BTREE_COL_FIX:
case BTREE_COL_VAR:
/*
* If WT_CURSTD_APPEND is set, insert a new record (ignoring
* the application's record number). First we search for the
* maximum possible record number so the search ends on the
* last page. The real record number is assigned by the
* serialized append operation.
* __wt_col_append_serial_func
*/
if (F_ISSET(cursor, WT_CURSTD_APPEND))
cbt->iface.recno = UINT64_MAX;
WT_ERR(__wt_col_search(session, cbt, 1));
if (F_ISSET(cursor, WT_CURSTD_APPEND))
cbt->iface.recno = 0;
/*
* If WT_CURSTD_OVERWRITE set, insert/update the key/value pair.
*
* If WT_CURSTD_OVERWRITE not set, fail if the key exists, else
* insert the key/value pair. Creating a record past the end
* of the tree in a fixed-length column-store implicitly fills
* the gap with empty records. Fail in that case, the record
* exists.
*/
if (!F_ISSET(cursor, WT_CURSTD_OVERWRITE) &&
((cbt->compare == 0 && !__cursor_invalid(cbt)) ||
(cbt->compare != 0 && __cursor_fix_implicit(btree, cbt)))) {
ret = WT_DUPLICATE_KEY;
break;
}
if ((ret = __wt_col_modify(session, cbt, 3)) == WT_RESTART)
goto retry;
if (F_ISSET(cursor, WT_CURSTD_APPEND) && ret == 0)
cbt->iface.recno = cbt->recno;
break;
case BTREE_ROW:
/*
* If WT_CURSTD_OVERWRITE not set, fail if the key exists, else
* insert the key/value pair.
*
* If WT_CURSTD_OVERWRITE set, insert/update the key/value pair.
*/
WT_ERR(__wt_row_search(session, cbt, 1));
if (cbt->compare == 0 &&
!__cursor_invalid(cbt) &&
!F_ISSET(cursor, WT_CURSTD_OVERWRITE)) {
ret = WT_DUPLICATE_KEY;
break;
}
if ((ret = __wt_row_modify(session, cbt, 0)) == WT_RESTART)
goto retry;
break;
WT_ILLEGAL_VALUE(session);
}
err: __cursor_func_resolve(cbt, ret);
return (ret);
}
/*
* __wt_btcur_search_near --
* Search for a record in the tree.
*/
int
__wt_btcur_search_near(WT_CURSOR_BTREE *cbt, int *exact)
{
WT_BTREE *btree;
WT_ITEM *val;
WT_CURSOR *cursor;
WT_SESSION_IMPL *session;
int ret;
btree = cbt->btree;
cursor = &cbt->iface;
session = (WT_SESSION_IMPL *)cursor->session;
WT_BSTAT_INCR(session, cursor_read_near);
if (btree->type == BTREE_ROW)
WT_RET(__cursor_size_chk(session, &cursor->key));
__cursor_func_init(cbt, 1);
WT_ERR(btree->type == BTREE_ROW ?
__wt_row_search(session, cbt, 0) :
__wt_col_search(session, cbt, 0));
/*
* Creating a record past the end of the tree in a fixed-length column-
* store implicitly fills the gap with empty records. In this case, we
* instantiate the empty record, it's an exact match.
*
* Else, if we find a valid key (one that wasn't deleted), return it.
*
* Else, if we found a deleted key, try to move to the next key in the
* tree (bias for prefix searches). Cursor next skips deleted records,
* so we don't have to test for them again.
*
* Else if there's no larger tree key, redo the search and try and find
* an earlier record. If that fails, quit, there's no record to return.
*/
if (cbt->compare != 0 && __cursor_fix_implicit(btree, cbt)) {
cbt->v = 0;
val = &cbt->iface.value;
val->data = &cbt->v;
val->size = 1;
*exact = 0;
} else if (!__cursor_invalid(cbt)) {
*exact = cbt->compare;
ret = __wt_kv_return(session, cbt, cbt->compare == 0 ? 0 : 1);
} else if ((ret = __wt_btcur_next(cbt)) != WT_NOTFOUND)
*exact = 1;
else {
WT_ERR(btree->type == BTREE_ROW ?
__wt_row_search(session, cbt, 0) :
__wt_col_search(session, cbt, 0));
if (!__cursor_invalid(cbt)) {
*exact = cbt->compare;
ret = __wt_kv_return(
session, cbt, cbt->compare == 0 ? 0 : 1);
} else if ((ret = __wt_btcur_prev(cbt)) != WT_NOTFOUND)
*exact = -1;
}
err: __cursor_func_resolve(cbt, ret);
return (ret);
}
