ndboperationdefine.cpp

mysql-5.0.22.tar.gz源码包

/* 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 */

#include <ndb_global.h>
#include <NdbOperation.hpp>
#include "NdbApiSignal.hpp"
#include <NdbTransaction.hpp>
#include <Ndb.hpp>
#include <NdbRecAttr.hpp>
#include "NdbUtil.hpp"
#include "NdbOut.hpp"
#include "NdbImpl.hpp"
#include <NdbIndexScanOperation.hpp>
#include <NdbBlob.hpp>

#include <Interpreter.hpp>

#include <AttributeHeader.hpp>
#include <signaldata/TcKeyReq.hpp>

/*****************************************************************************
 * int insertTuple();
 *****************************************************************************/
int
NdbOperation::insertTuple()
{
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    theOperationType = InsertRequest;
    tNdbCon->theSimpleState = 0;
    theErrorLine = tErrorLine++;
    theLockMode = LM_Exclusive;
    return 0; 
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::insertTuple()
/******************************************************************************
 * int updateTuple();
 *****************************************************************************/
int
NdbOperation::updateTuple()
{  
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    tNdbCon->theSimpleState = 0;
    theOperationType = UpdateRequest;  
    theErrorLine = tErrorLine++;
    theLockMode = LM_Exclusive;
    return 0; 
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::updateTuple()
/*****************************************************************************
 * int writeTuple();
 *****************************************************************************/
int
NdbOperation::writeTuple()
{  
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    tNdbCon->theSimpleState = 0;
    theOperationType = WriteRequest;  
    theErrorLine = tErrorLine++;
    theLockMode = LM_Exclusive;
    return 0; 
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::writeTuple()
/******************************************************************************
 * int readTuple();
 *****************************************************************************/
int
NdbOperation::readTuple(NdbOperation::LockMode lm)
{ 
  switch(lm) {
  case LM_Read:
    return readTuple();
    break;
  case LM_Exclusive:
    return readTupleExclusive();
    break;
  case LM_CommittedRead:
    return committedRead();
    break;
  default:
    return -1;
  };
}
/******************************************************************************
 * int readTuple();
 *****************************************************************************/
int
NdbOperation::readTuple()
{ 
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    tNdbCon->theSimpleState = 0;
    theOperationType = ReadRequest;
    theErrorLine = tErrorLine++;
    theLockMode = LM_Read;
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::readTuple()

/*****************************************************************************
 * int deleteTuple();
 *****************************************************************************/
int
NdbOperation::deleteTuple()
{
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;  
    tNdbCon->theSimpleState = 0;
    theOperationType = DeleteRequest;
    theErrorLine = tErrorLine++;
    theLockMode = LM_Exclusive;
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::deleteTuple()

/******************************************************************************
 * int readTupleExclusive();
 *****************************************************************************/
int
NdbOperation::readTupleExclusive()
{ 
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    tNdbCon->theSimpleState = 0;
    theOperationType = ReadExclusive;
    theErrorLine = tErrorLine++;
    theLockMode = LM_Exclusive;
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::readTupleExclusive()

/*****************************************************************************
 * int simpleRead();
 *****************************************************************************/
int
NdbOperation::simpleRead()
{
  /**
   * Currently/still disabled
   */
  return readTuple();
#if 0
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    theOperationType = ReadRequest;
    theSimpleIndicator = 1;
    theErrorLine = tErrorLine++;
    theLockMode = LM_Read;
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
#endif
}//NdbOperation::simpleRead()

/*****************************************************************************
 * int dirtyRead();
 *****************************************************************************/
int
NdbOperation::dirtyRead()
{
  return committedRead();
}//NdbOperation::dirtyRead()

/*****************************************************************************
 * int committedRead();
 *****************************************************************************/
int
NdbOperation::committedRead()
{
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    theOperationType = ReadRequest;
    theSimpleIndicator = 1;
    theDirtyIndicator = 1;
    theErrorLine = tErrorLine++;
    theLockMode = LM_CommittedRead;
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::committedRead()

/*****************************************************************************
 * int dirtyUpdate();
 ****************************************************************************/
int
NdbOperation::dirtyUpdate()
{
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    theOperationType = UpdateRequest;
    tNdbCon->theSimpleState = 0;
    theSimpleIndicator = 1;
    theDirtyIndicator = 1;
    theErrorLine = tErrorLine++;
    theLockMode = LM_CommittedRead;
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::dirtyUpdate()

/******************************************************************************
 * int dirtyWrite();
 *****************************************************************************/
int
NdbOperation::dirtyWrite()
{
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    theOperationType = WriteRequest;
    tNdbCon->theSimpleState = 0;
    theSimpleIndicator = 1;
    theDirtyIndicator = 1;
    theErrorLine = tErrorLine++;
    theLockMode = LM_CommittedRead;
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::dirtyWrite()

/******************************************************************************
 * int interpretedUpdateTuple();
 ****************************************************************************/
int
NdbOperation::interpretedUpdateTuple()
{
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    tNdbCon->theSimpleState = 0;
    theOperationType = UpdateRequest;
    theAI_LenInCurrAI = 25;
    theLockMode = LM_Exclusive;
    theErrorLine = tErrorLine++;
    initInterpreter();
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::interpretedUpdateTuple()

/*****************************************************************************
 * int interpretedDeleteTuple();
 *****************************************************************************/
int
NdbOperation::interpretedDeleteTuple()
{
  NdbTransaction* tNdbCon = theNdbCon;
  int tErrorLine = theErrorLine;
  if (theStatus == Init) {
    theStatus = OperationDefined;
    tNdbCon->theSimpleState = 0;
    theOperationType = DeleteRequest;

    theErrorLine = tErrorLine++;
    theAI_LenInCurrAI = 25;
    theLockMode = LM_Exclusive;
    initInterpreter();
    return 0;
  } else {
    setErrorCode(4200);
    return -1;
  }//if
}//NdbOperation::interpretedDeleteTuple()



/******************************************************************************
 * int getValue(AttrInfo* tAttrInfo, char* aRef )
 *
 * Return Value   Return 0 : GetValue was successful.
 *                Return -1: In all other case. 
 * Parameters:    tAttrInfo : Attribute object of the retrieved attribute 
 *                            value.
 * Remark:        Define an attribute to retrieve in query.
 *****************************************************************************/
NdbRecAttr*
NdbOperation::getValue_impl(const NdbColumnImpl* tAttrInfo, char* aValue)
{
  NdbRecAttr* tRecAttr;
  if ((tAttrInfo != NULL) &&
      (theStatus != Init)){
    if (theStatus != GetValue) {
      if (theInterpretIndicator == 1) {
	if (theStatus == FinalGetValue) {
	  ; // Simply continue with getValue
	} else if (theStatus == ExecInterpretedValue) {
	  if (insertATTRINFO(Interpreter::EXIT_OK) == -1)
	    return NULL;
	  theInterpretedSize = theTotalCurrAI_Len -
	    (theInitialReadSize + 5);
	} else if (theStatus == SetValueInterpreted) {
	  theFinalUpdateSize = theTotalCurrAI_Len - 
	    (theInitialReadSize + theInterpretedSize + 5);
	} else {
	  setErrorCodeAbort(4230);
	  return NULL;
	}//if
	// MASV - How would execution come here?
	theStatus = FinalGetValue;
      } else {
	setErrorCodeAbort(4230);