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wl1671 - Sorted scan

This commit is contained in:
unknown
2004-05-26 13:24:14 +02:00
parent d887ce18a4
commit 66011d0b8c
78 changed files with 3523 additions and 5330 deletions

View File

@ -17,77 +17,4 @@
#ifndef NdbCursorOperation_H
#define NdbCursorOperation_H
#include <NdbOperation.hpp>
class NdbResultSet;
/**
* @class NdbCursorOperation
* @brief Operation using cursors
*/
class NdbCursorOperation : public NdbOperation
{
friend class NdbResultSet;
friend class NdbConnection;
public:
/**
* Type of cursor
*/
enum CursorType {
NoCursor = 0,
ScanCursor = 1,
IndexCursor = 2
};
/**
* Lock when performing scan
*/
enum LockMode {
LM_Read = 0,
LM_Exclusive = 1,
LM_CommittedRead = 2,
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
LM_Dirty = 2
#endif
};
virtual CursorType cursorType() = 0;
/**
* 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 ) = 0;
inline NdbResultSet* readTuplesExclusive(int parallell = 0){
return readTuples(parallell, LM_Exclusive);
}
protected:
NdbCursorOperation(Ndb* aNdb);
~NdbCursorOperation();
void cursInit();
virtual int executeCursor(int ProcessorId) = 0;
NdbResultSet* getResultSet();
NdbResultSet* m_resultSet;
private:
virtual int nextResult(bool fetchAllowed) = 0;
virtual void closeScan() = 0;
};
#endif