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78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/*
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Copyright (c) 2019 MariaDB
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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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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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#include "sql_string.h"
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#include "derived_handler.h"
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#include "select_handler.h"
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class federatedx_handler_base
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{
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protected:
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FEDERATEDX_SHARE *share;
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federatedx_txn *txn;
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federatedx_io **iop;
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FEDERATEDX_IO_RESULT *stored_result;
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StringBuffer<512> query;
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TABLE *query_table;
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int next_row_(TABLE *tmp_tbl);
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int init_scan_();
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int end_scan_();
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public:
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federatedx_handler_base(THD *thd_arg, TABLE *tbl_arg);
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};
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/*
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Implementation class of the derived_handler interface for FEDERATEDX:
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class declaration
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*/
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class ha_federatedx_derived_handler: public derived_handler, public federatedx_handler_base
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{
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private:
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public:
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ha_federatedx_derived_handler(THD* thd_arg, TABLE_LIST *tbl, TABLE *tbl_arg);
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~ha_federatedx_derived_handler();
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int init_scan() override { return federatedx_handler_base::init_scan_(); }
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int next_row() override { return federatedx_handler_base::next_row_(table); }
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int end_scan() override { return federatedx_handler_base::end_scan_(); }
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};
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/*
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Implementation class of the select_handler interface for FEDERATEDX:
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class declaration
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*/
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class ha_federatedx_select_handler: public select_handler, public federatedx_handler_base
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{
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public:
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ha_federatedx_select_handler(THD *thd_arg, SELECT_LEX_UNIT *sel_unit,
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TABLE *tbl);
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ha_federatedx_select_handler(THD *thd_arg, SELECT_LEX *sel_lex,
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SELECT_LEX_UNIT *sel_unit, TABLE *tbl);
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~ha_federatedx_select_handler();
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int init_scan() override { return federatedx_handler_base::init_scan_(); }
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int next_row() override { return federatedx_handler_base::next_row_(table); }
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int end_scan() override;
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private:
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static constexpr auto PRINT_QUERY_TYPE=
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enum_query_type(QT_VIEW_INTERNAL | QT_SELECT_ONLY |
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QT_ITEM_ORIGINAL_FUNC_NULLIF | QT_PARSABLE);
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};
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