C++ (Cpp) kvs_cursor_update Examples

Example #1

File: memrata.c Project: umerazad/wiredtiger

/*
 * 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));
}

Example #2

File: kvs_bdb.c Project: Machyne/mongo

static int
kvs_cursor_remove(WT_CURSOR *wtcursor)
{
	CURSOR_SOURCE *cursor;
	DBC *dbc;
	DBT *key, *value;
	WT_EXTENSION_API *wt_api;
	WT_SESSION *session;
	int ret = 0;

	session = wtcursor->session;
	cursor = (CURSOR_SOURCE *)wtcursor;
	wt_api = cursor->wt_api;

	dbc = cursor->dbc;
	key = &cursor->key;
	value = &cursor->value;

	/*
	 * WiredTiger's "remove" of a bitfield is really an update with a value
	 * of a single byte of zero.
	 */
	if (cursor->config_bitfield) {
		wtcursor->value.size = 1;
		wtcursor->value.data = "\0";
		return (kvs_cursor_update(wtcursor));
	}

	if ((ret = copyin_key(wtcursor)) != 0)
		return (ret);

	if ((ret = dbc->get(dbc, key, value, DB_SET)) != 0) {
		if (ret == DB_NOTFOUND || ret == DB_KEYEMPTY)
			return (WT_NOTFOUND);
		ERET(wt_api,
		    session, WT_ERROR, "DbCursor.get: %s", db_strerror(ret));
	}
	if ((ret = dbc->del(dbc, 0)) != 0)
		ERET(wt_api,
		    session, WT_ERROR, "DbCursor.del: %s", db_strerror(ret));

	return (0);
}