/*
* kvs_cursor_remove --
* WT_CURSOR::remove method.
*/
static int
kvs_cursor_remove(WT_CURSOR *wt_cursor)
{
CURSOR *cursor;
WT_SESSION *session;
int ret;
cursor = (CURSOR *)wt_cursor;
session = cursor->session;
ret = 0;
/*
* WiredTiger's "remove" of a bitfield is really an update with a value
* of a single byte of zero.
*/
if (cursor->config_bitfield) {
wt_cursor->value.size = 1;
wt_cursor->value.data = "\0";
return (kvs_cursor_update(wt_cursor));
}
if ((ret = copyin_key(wt_cursor)) != 0)
return (ret);
if ((ret = kvs_del(cursor->data_source->kvs, &cursor->record)) == 0)
return (0);
if (ret == KVS_E_KEY_NOT_FOUND)
return (WT_NOTFOUND);
ERET(session, WT_ERROR, "kvs_del: %s", kvs_strerror(ret));
}
int kvs_helper_cursor_del(KVS_cursor *const cursor, unsigned const flags) {
if(!cursor) return KVS_EINVAL;
if(flags) return KVS_ENOTSUP;
KVS_txn *txn = NULL;
KVS_val key[1];
int rc = kvs_cursor_txn(cursor, &txn);
if(rc < 0) return rc;
rc = kvs_cursor_current(cursor, key, NULL);
if(rc < 0) return rc;
rc = kvs_del(txn, key, flags);
if(rc < 0) return rc;
kvs_cursor_clear(cursor);
return rc;
}
int kvs_helper_delr(KVS_txn *const txn, KVS_range const *const range, uint64_t *const out) {
KVS_val key[1];
uint64_t n = 0;
KVS_cursor *cursor = NULL;
int rc = kvs_cursor_open(txn, &cursor);
if(rc < 0) goto cleanup;
rc = kvs_cursor_firstr(cursor, range, key, NULL, +1);
for(; rc >= 0; rc = kvs_cursor_nextr(cursor, range, key, NULL, +1)) {
rc = kvs_del(txn, key, 0);
if(rc < 0) goto cleanup;
n++;
}
if(KVS_NOTFOUND == rc) rc = 0;
if(rc < 0) goto cleanup;
if(out) *out = n;
cleanup:
kvs_cursor_close(cursor); cursor = NULL;
return rc;
}
