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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 */
/*****************************************************************************
* Name: NdbScanOperation.hpp
* Include:
* Link:
* Author: Martin Sköld
* Date: 2002-04-01
* Version: 0.1
* Description: Table scan support
* Documentation:
* Adjust: 2002-04-01 Martin Sköld First version.
****************************************************************************/
#ifndef NdbScanOperation_H
#define NdbScanOperation_H
#include <NdbOperation.hpp>
#include <NdbCursorOperation.hpp>
class NdbBlob;
/**
* @class NdbScanOperation
* @brief Class of scan operations for use in transactions.
*/
class NdbScanOperation : public NdbCursorOperation
{
friend class Ndb;
friend class NdbConnection;
friend class NdbResultSet;
friend class NdbOperation;
public:
/**
* readTuples returns a NdbResultSet where tuples are stored.
* Tuples are not stored in NdbResultSet until execute(NoCommit)
* has been executed and nextResult has been called.
*
* @param parallel Scan parallelism
* @param LockMode Scan lock handling
* @returns NdbResultSet.
*/
virtual NdbResultSet* readTuples(unsigned parallel = 0,
LockMode = LM_Read );
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
int updateTuples();
int updateTuples(Uint32 parallelism);
int deleteTuples();
int deleteTuples(Uint32 parallelism);
// Overload setValue for updateTuples
int setValue(const char* anAttrName, const char* aValue, Uint32 len = 0);
int setValue(const char* anAttrName, Int32 aValue);
int setValue(const char* anAttrName, Uint32 aValue);
int setValue(const char* anAttrName, Int64 aValue);
int setValue(const char* anAttrName, Uint64 aValue);
int setValue(const char* anAttrName, float aValue);
int setValue(const char* anAttrName, double aValue);
int setValue(Uint32 anAttrId, const char* aValue, Uint32 len = 0);
int setValue(Uint32 anAttrId, Int32 aValue);
int setValue(Uint32 anAttrId, Uint32 aValue);
int setValue(Uint32 anAttrId, Int64 aValue);
int setValue(Uint32 anAttrId, Uint64 aValue);
int setValue(Uint32 anAttrId, float aValue);
int setValue(Uint32 anAttrId, double aValue);
#endif
NdbBlob* getBlobHandle(const char* anAttrName);
NdbBlob* getBlobHandle(Uint32 anAttrId);
private:
NdbScanOperation(Ndb* aNdb);
~NdbScanOperation();
NdbCursorOperation::CursorType cursorType();
virtual int nextResult(bool fetchAllowed = true);
virtual void release();
void closeScan();
// Overloaded methods from NdbCursorOperation
int executeCursor(int ProcessorId);
// Overloaded private methods from NdbOperation
int init(NdbTableImpl* tab, NdbConnection* myConnection);
int prepareSend(Uint32 TC_ConnectPtr, Uint64 TransactionId);
int doSend(int ProcessorId);
virtual void setErrorCode(int aErrorCode);
virtual void setErrorCodeAbort(int aErrorCode);
virtual int equal_impl(const NdbColumnImpl* anAttrObject,
const char* aValue,
Uint32 len);
private:
NdbConnection *m_transConnection;
bool m_autoExecute;
bool m_updateOp;
bool m_writeOp;
bool m_deleteOp;
class SetValueRecList* m_setValueList;
};
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
class AttrInfo;
class SetValueRecList;
class SetValueRec {
friend class SetValueRecList;
public:
SetValueRec();
~SetValueRec();
enum SetValueType {
SET_STRING_ATTR1 = 0,
SET_INT32_ATTR1 = 1,
SET_UINT32_ATTR1 = 2,
SET_INT64_ATTR1 = 3,
SET_UINT64_ATTR1 = 4,
SET_FLOAT_ATTR1 = 5,
SET_DOUBLE_ATTR1 = 6,
SET_STRING_ATTR2 = 7,
SET_INT32_ATTR2 = 8,
SET_UINT32_ATTR2 = 9,
SET_INT64_ATTR2 = 10,
SET_UINT64_ATTR2 = 11,
SET_FLOAT_ATTR2 = 12,
SET_DOUBLE_ATTR2 = 13
};
SetValueType stype;
union {
char* anAttrName;
Uint32 anAttrId;
};
struct String {
char* aStringValue;
Uint32 len;
};
union {
String stringStruct;
Int32 anInt32Value;
Uint32 anUint32Value;
Int64 anInt64Value;
Uint64 anUint64Value;
float aFloatValue;
double aDoubleValue;
};
private:
SetValueRec* next;
};
inline
SetValueRec::SetValueRec() :
next(0)
{
}
class SetValueRecList {
public:
SetValueRecList();
~SetValueRecList();
void add(const char* anAttrName, const char* aValue, Uint32 len = 0);
void add(const char* anAttrName, Int32 aValue);
void add(const char* anAttrName, Uint32 aValue);
void add(const char* anAttrName, Int64 aValue);
void add(const char* anAttrName, Uint64 aValue);
void add(const char* anAttrName, float aValue);
void add(const char* anAttrName, double aValue);
void add(Uint32 anAttrId, const char* aValue, Uint32 len = 0);
void add(Uint32 anAttrId, Int32 aValue);
void add(Uint32 anAttrId, Uint32 aValue);
void add(Uint32 anAttrId, Int64 aValue);
void add(Uint32 anAttrId, Uint64 aValue);
void add(Uint32 anAttrId, float aValue);
void add(Uint32 anAttrId, double aValue);
typedef void(* IterateFn)(SetValueRec&, NdbOperation&);
static void callSetValueFn(SetValueRec&, NdbOperation&);
void iterate(IterateFn nextfn, NdbOperation&);
private:
SetValueRec* first;
SetValueRec* last;
};
inline
SetValueRecList::SetValueRecList() :
first(0),
last(0)
{
}
inline
SetValueRecList::~SetValueRecList() {
if (first) delete first;
first = last = 0;
}
inline
void SetValueRecList::iterate(SetValueRecList::IterateFn nextfn, NdbOperation& oper)
{
SetValueRec* recPtr = first;
while(recPtr) {
(*nextfn)(*recPtr, oper);
recPtr = recPtr->next; // Move to next in list - MASV
}
}
#endif
#endif
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