mirror of
https://github.com/MariaDB/server.git
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740c0d3a87
Remove dead and unused code. Update to reflect the code review requests. include/thr_lock.h: Remove declarations for THR_LOCK_OWNER, added along with the patch for sensitive cursors. mysys/thr_lock.c: Remove support for multiple thr_lock requestors per THD. sql/lock.cc: Revert the patch that added support for sensitive cursors. sql/sp_rcontext.cc: Updated the use of mysql_open_cursor(). sql/sql_class.cc: Move the instance of Server_side_cursor from class Prepared_statement to class Statement. sql/sql_class.h: Move the isntance of Server_side_cursor from class Prepared_statement to class Statement. Remove multiple lock_ids of thr_lock. sql/sql_cursor.cc: Remove Sensitive_cursor implementation. sql/sql_cursor.h: Remove declarations for sensitive cursors. sql/sql_prepare.cc: Move the declaration of instance of Server_side_cursor from class Statement to class Prepared_statement, where it's used. sql/sql_select.cc: Remove sensitive cursor support. sql/sql_select.h: Remove sensitive cursor support. sql/sql_union.cc: Remove sensitive cursor support.
66 lines
2 KiB
C++
66 lines
2 KiB
C++
/* Copyright (C) 2005 MySQL AB
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef _sql_cursor_h_
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#define _sql_cursor_h_
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#ifdef USE_PRAGMA_INTERFACE
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#pragma interface /* gcc class interface */
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#endif
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#include "sql_class.h" /* Query_arena */
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class JOIN;
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/**
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@file
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Declarations for implementation of server side cursors. Only
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read-only non-scrollable cursors are currently implemented.
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*/
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/**
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Server_side_cursor -- an interface for materialized
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implementation of cursors. All cursors are self-contained
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(created in their own memory root). For that reason they must
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be deleted only using a pointer to Server_side_cursor, not to
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its base class.
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*/
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class Server_side_cursor: protected Query_arena, public Sql_alloc
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{
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protected:
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/** Row destination used for fetch */
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select_result *result;
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public:
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Server_side_cursor(MEM_ROOT *mem_root_arg, select_result *result_arg)
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:Query_arena(mem_root_arg, INITIALIZED), result(result_arg)
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{}
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virtual bool is_open() const= 0;
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virtual int open(JOIN *top_level_join)= 0;
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virtual void fetch(ulong num_rows)= 0;
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virtual void close()= 0;
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virtual ~Server_side_cursor();
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static void operator delete(void *ptr, size_t size);
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};
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int mysql_open_cursor(THD *thd, select_result *result,
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Server_side_cursor **res);
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#endif /* _sql_cusor_h_ */
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