93 lines
3.2 KiB
C++
93 lines
3.2 KiB
C++
/*
|
|
Copyright (c) 2000, 2019, 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, version 2.0,
|
|
as published by the Free Software Foundation.
|
|
|
|
This program is also distributed with certain software (including
|
|
but not limited to OpenSSL) that is licensed under separate terms,
|
|
as designated in a particular file or component or in included license
|
|
documentation. The authors of MySQL hereby grant you an additional
|
|
permission to link the program and your derivative works with the
|
|
separately licensed software that they have included with MySQL.
|
|
|
|
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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef SQL_HA_NDBCLUSTER_COND_INCLUDED
|
|
#define SQL_HA_NDBCLUSTER_COND_INCLUDED
|
|
|
|
/*
|
|
This file defines the data structures used by engine condition pushdown in
|
|
the NDB Cluster handler
|
|
*/
|
|
|
|
#include "sql/sql_list.h"
|
|
#include "storage/ndb/include/ndbapi/NdbApi.hpp"
|
|
|
|
class Item;
|
|
struct key_range;
|
|
struct TABLE;
|
|
class Ndb_item;
|
|
|
|
class ha_ndbcluster_cond {
|
|
public:
|
|
ha_ndbcluster_cond();
|
|
~ha_ndbcluster_cond();
|
|
|
|
const Item *cond_push(const Item *cond, TABLE *table,
|
|
const NdbDictionary::Table *ndb_table,
|
|
bool other_tbls_ok, Item *&pushed_cond);
|
|
|
|
void cond_clear();
|
|
int generate_scan_filter_from_cond(NdbScanFilter &filter);
|
|
|
|
static int generate_scan_filter_from_key(NdbScanFilter &filter,
|
|
const class KEY *key_info,
|
|
const key_range *start_key,
|
|
const key_range *end_key);
|
|
|
|
// Get a possibly pre-generated Interpreter code for the pushed condition
|
|
const NdbInterpretedCode &get_interpreter_code() {
|
|
return m_scan_filter_code;
|
|
}
|
|
|
|
void set_condition(const Item *cond);
|
|
bool check_condition() const {
|
|
return (m_unpushed_cond == nullptr || eval_condition());
|
|
}
|
|
|
|
static void add_read_set(TABLE *table, const Item *cond);
|
|
void add_read_set(TABLE *table) { add_read_set(table, m_unpushed_cond); }
|
|
|
|
private:
|
|
int build_scan_filter_predicate(List_iterator<const Ndb_item> &cond,
|
|
NdbScanFilter *filter, bool negated) const;
|
|
int build_scan_filter_group(List_iterator<const Ndb_item> &cond,
|
|
NdbScanFilter *filter, bool negated) const;
|
|
|
|
bool eval_condition() const;
|
|
|
|
// The serialized pushed condition
|
|
List<const Ndb_item> m_ndb_cond;
|
|
|
|
// A pre-generated scan_filter
|
|
NdbInterpretedCode m_scan_filter_code;
|
|
|
|
/**
|
|
* Stores condition which can't be pushed to NDB, need to be evaluated by
|
|
* ha_ndbcluster before returning rows.
|
|
*/
|
|
const Item *m_unpushed_cond;
|
|
};
|
|
|
|
#endif
|