From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001 From: Karen Arutyunov Date: Thu, 2 Nov 2017 23:11:29 +0300 Subject: Add implementation --- mysql/my_icp.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 mysql/my_icp.h (limited to 'mysql/my_icp.h') diff --git a/mysql/my_icp.h b/mysql/my_icp.h new file mode 100644 index 0000000..8b77b7c --- /dev/null +++ b/mysql/my_icp.h @@ -0,0 +1,48 @@ +/* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ + +#ifndef _my_icp_h +#define _my_icp_h + +#ifdef __cplusplus +extern "C" { +#endif + +/** + Values returned by index_cond_func_xxx functions. +*/ + +typedef enum icp_result { + /** Index tuple doesn't satisfy the pushed index condition (the engine + should discard the tuple and go to the next one) */ + ICP_NO_MATCH, + + /** Index tuple satisfies the pushed index condition (the engine should + fetch and return the record) */ + ICP_MATCH, + + /** Index tuple is out of the range that we're scanning, e.g. if we're + scanning "t.key BETWEEN 10 AND 20" and got a "t.key=21" tuple (the engine + should stop scanning and return HA_ERR_END_OF_FILE right away). */ + ICP_OUT_OF_RANGE + +} ICP_RESULT; + + +#ifdef __cplusplus +} +#endif + +#endif /* _my_icp_h */ -- cgit v1.1