TableInfoPs.hpp
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上传日期:2022-05-23
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- /* Copyright (C) 2003 MySQL AB
- 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; either version 2 of the License, or
- (at your option) any later version.
- 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef TABLEINFO_PS_HPP
- #define TABLEINFO_PS_HPP
- #include <Vector.hpp>
- #include <ndb_types.h>
- #include <string.h>
- #include <NdbMem.h>
- struct TableInfo {
- Uint32 tableId;
- char* tableName;
- };
- /**
- * @class TableInfoPS
- * @brief Meta information about tables stored on PS
- */
- class TableInfoPs {
- public:
- inline void insert(const Uint32 tableId, const char * tableName);
- inline bool del(const Uint32 tableId);
- inline char * getTableName(const Uint32 tableId) const;
- private:
- Vector<struct TableInfo*> tableInfo;
- inline TableInfo * lookup(const Uint32 tableId) const;
- inline TableInfo * lookup(const Uint32 tableId , Uint32 * pos) const;
- };
- inline
- TableInfo *
- TableInfoPs::lookup(const Uint32 tableId) const{
- TableInfo * table;
- Uint32 i=0;
-
- while(i<tableInfo.size()) {
- table=tableInfo[i];
- if(table->tableId == tableId)
- return table;
- i++;
- }
- return 0;
- }
- inline
- TableInfo *
- TableInfoPs::lookup(const Uint32 tableId, Uint32 * pos ) const{
- TableInfo * table;
- Uint32 i=0;
- while(i<tableInfo.size()) {
- table=tableInfo[i];
- if(table->tableId == tableId) {
- *pos=i;
- return table;
- }
- i++;
- }
- return 0;
- }
- inline
- char *
- TableInfoPs::getTableName(const Uint32 tableId) const{
- TableInfo * table;
- table=lookup(tableId);
- if(table!=0)
- return table->tableName;
- return 0;
- }
- inline
- void
- TableInfoPs::insert(const Uint32 tableId, const char * tableName) {
- TableInfo * table = new TableInfo;
- table->tableId=tableId;
- table->tableName=strdup(tableName);
- tableInfo.push_back(table);
- }
- inline
- bool
- TableInfoPs::del(const Uint32 tableId) {
- TableInfo * table;
- Uint32 i=0;
- table = lookup(tableId, &i);
-
- if(table!=0) {
- NdbMem_Free(table->tableName);
- delete table;
- tableInfo.erase(i);
- return true;
- }
- return false;
- }
- #endif