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147 lines
4 KiB
C++
147 lines
4 KiB
C++
/* Copyright (C) 2003 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; either version 2 of the License, or
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(at your option) any later version.
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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 NdbSchemaCon_H
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#define NdbSchemaCon_H
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#ifndef DOXYGEN_SHOULD_SKIP_DEPRECATED
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#include <ndb_types.h>
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#include "NdbError.hpp"
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#include <NdbSchemaOp.hpp>
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class NdbSchemaOp;
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class Ndb;
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class NdbApiSignal;
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/**
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* @class NdbSchemaCon
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* @brief Represents a schema transaction.
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*
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* When creating a new table,
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* the first step is to get a NdbSchemaCon object to represent
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* the schema transaction.
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* This is done by calling Ndb::startSchemaTransaction.
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*
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* The next step is to get a NdbSchemaOp object by calling
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* NdbSchemaCon::getNdbSchemaOp.
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* The NdbSchemaOp object then has methods to define the table and
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* its attributes.
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*
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* Finally, the NdbSchemaCon::execute method inserts the table
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* into the database.
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*
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* @note Currently only one table can be added per transaction.
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* @note Depricated, use NdbDictionary
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*/
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class NdbSchemaCon
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{
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friend class Ndb;
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friend class NdbSchemaOp;
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public:
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static
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NdbSchemaCon* startSchemaTrans(Ndb* pNdb){
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return new NdbSchemaCon(pNdb);
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}
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static
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void closeSchemaTrans(NdbSchemaCon* pSchCon){
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delete pSchCon;
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}
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/**
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* Execute a schema transaction.
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*
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* @return 0 if successful otherwise -1.
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*/
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int execute();
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/**
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* Get a schemaoperation.
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*
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* @note Currently, only one operation per transaction is allowed.
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*
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* @return Pointer to a NdbSchemaOp or NULL if unsuccessful.
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*/
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NdbSchemaOp* getNdbSchemaOp();
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/**
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* Get the latest error
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*
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* @return Error object.
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*/
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const NdbError & getNdbError() const;
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private:
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/******************************************************************************
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* These are the create and delete methods of this class.
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*****************************************************************************/
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NdbSchemaCon(Ndb* aNdb);
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~NdbSchemaCon();
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/******************************************************************************
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* These are the private methods of this class.
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*****************************************************************************/
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void release(); // Release all schemaop in schemaCon
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/***************************************************************************
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* These methods are service methods to other classes in the NDBAPI.
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***************************************************************************/
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int checkMagicNumber(); // Verify correct object
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int receiveDICTTABCONF(NdbApiSignal* aSignal);
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int receiveDICTTABREF(NdbApiSignal* aSignal);
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int receiveCREATE_INDX_CONF(NdbApiSignal*);
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int receiveCREATE_INDX_REF(NdbApiSignal*);
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int receiveDROP_INDX_CONF(NdbApiSignal*);
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int receiveDROP_INDX_REF(NdbApiSignal*);
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/*****************************************************************************
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* These are the private variables of this class.
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*****************************************************************************/
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NdbError theError; // Errorcode
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Ndb* theNdb; // Pointer to Ndb object
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NdbSchemaOp* theFirstSchemaOpInList; // First operation in operation list.
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int theMagicNumber; // Magic number
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};
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inline
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int
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NdbSchemaCon::checkMagicNumber()
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{
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if (theMagicNumber != 0x75318642)
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return -1;
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return 0;
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}//NdbSchemaCon::checkMagicNumber()
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#endif
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#endif
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