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145 lines
4.6 KiB
145 lines
4.6 KiB
/* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef PARSE_TREE_HANDLER_INCLUDED
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#define PARSE_TREE_HANDLER_INCLUDED
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#include "lex_string.h"
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#include "my_base.h"
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#include "my_dbug.h"
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#include "parse_tree_nodes.h"
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#include "sql/sql_handler.h" // Sql_cmd_handler_open
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class Item;
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class PT_item_list;
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class Sql_cmd;
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class THD;
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class Table_ident;
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struct Parse_context;
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class PT_handler_open final : public Parse_tree_root {
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public:
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PT_handler_open(Table_ident *table, const LEX_CSTRING &opt_table_alias)
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: m_table(table), m_opt_table_alias(opt_table_alias.str) {}
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Sql_cmd *make_cmd(THD *thd) override;
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private:
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Table_ident *const m_table;
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const char *const m_opt_table_alias;
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Sql_cmd_handler_open m_cmd;
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};
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class PT_handler_close final : public Parse_tree_root {
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public:
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explicit PT_handler_close(const LEX_CSTRING &table) : m_table(table) {}
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Sql_cmd *make_cmd(THD *thd) override;
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private:
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const LEX_CSTRING m_table;
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Sql_cmd_handler_close m_cmd;
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};
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class PT_handler_read_base : public Parse_tree_root {
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public:
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virtual ~PT_handler_read_base() = 0; // force abstract class
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PT_handler_read_base(const LEX_CSTRING &table, Item *opt_where_clause,
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PT_limit_clause *opt_limit_clause)
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: m_table(table),
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m_opt_where_clause(opt_where_clause),
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m_opt_limit_clause(opt_limit_clause) {}
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protected:
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bool contextualize(Parse_context *pc);
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private:
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const LEX_CSTRING m_table;
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Item *m_opt_where_clause;
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PT_limit_clause *const m_opt_limit_clause;
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};
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inline PT_handler_read_base::~PT_handler_read_base() {}
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class PT_handler_table_scan final : public PT_handler_read_base {
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typedef PT_handler_read_base super;
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public:
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PT_handler_table_scan(const LEX_CSTRING &table, enum_ha_read_modes direction,
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Item *opt_where_clause,
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PT_limit_clause *opt_limit_clause)
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: super(table, opt_where_clause, opt_limit_clause),
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m_direction(direction) {}
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Sql_cmd *make_cmd(THD *thd) override;
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private:
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const enum_ha_read_modes m_direction;
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};
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class PT_handler_index_scan final : public PT_handler_read_base {
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typedef PT_handler_read_base super;
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public:
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PT_handler_index_scan(const LEX_CSTRING &table, const LEX_CSTRING &index,
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enum_ha_read_modes direction, Item *opt_where_clause,
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PT_limit_clause *opt_limit_clause)
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: super(table, opt_where_clause, opt_limit_clause),
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m_index(index.str),
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m_direction(direction) {
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DBUG_ASSERT(direction != enum_ha_read_modes::RKEY);
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}
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Sql_cmd *make_cmd(THD *thd) override;
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private:
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const char *const m_index;
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const enum_ha_read_modes m_direction;
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};
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class PT_handler_index_range_scan final : public PT_handler_read_base {
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typedef PT_handler_read_base super;
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public:
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PT_handler_index_range_scan(const LEX_CSTRING &table,
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const LEX_CSTRING &index,
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ha_rkey_function key_function,
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PT_item_list *keypart_values,
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Item *opt_where_clause,
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PT_limit_clause *opt_limit_clause)
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: super(table, opt_where_clause, opt_limit_clause),
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m_index(index.str),
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m_key_function(key_function),
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m_keypart_values(keypart_values) {}
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Sql_cmd *make_cmd(THD *thd) override;
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private:
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const char *const m_index;
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const ha_rkey_function m_key_function;
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PT_item_list *const m_keypart_values;
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};
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#endif // PARSE_TREE_HANDLER_INCLUDED
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