Initial revision of NDB Cluster files

BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted

ndb/include/ndbapi/NdbCursorOperation.hpp

@@ -0,0 +1,93 @@
+/* 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 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