/* 
+----------------------------------------------------------------------------- 
|  Project :  PHB
|  Modul   :  DBM
+----------------------------------------------------------------------------- 
|  Copyright 2005 Texas Instruments Berlin, AG 
|                 All rights reserved. 
| 
|                 This file is confidential and a trade secret of Texas 
|                 Instruments Berlin, AG 
|                 The receipt of or possession of this file does not convey 
|                 any rights to reproduce or disclose its contents or to 
|                 manufacture, use, or sell anything it may describe, in 
|                 whole, or in part, without the specific written consent of 
|                 Texas Instruments Berlin, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  Internal declarations for DBM module
+----------------------------------------------------------------------------- 
*/ 
#ifndef DB_INT_H
#define DB_INT_H

#include "db.h"

/* This macro allows us to close the file before
   returning from function */
#define FFS_OPEN_PROBLEM_PATCH

/* If this macro is activated, we close earlier activated file
   before opening next file */
#define FFS_CLOSE_BEFORE_OPEN

/* Mutually exclusive macros */
#ifdef FFS_CLOSE_BEFORE_OPEN
#undef FFS_OPEN_PROBLEM_PATCH
#endif

#ifdef FFS_CLOSE_BEFORE_OPEN

  #define MAX_OPEN_READ_PER_DB 2
  #define MAX_OPEN_WRITE_PER_DB 1

#endif

#ifdef _SIMULATION_
  #include "ffs_pc_api.h"
#else
  #include "ffs/ffs.h"
#endif

#include "vsi.h"
#include "aci_mem.h"

#define RECORD_BITMAP_SIZE		  32  /* Based on MAX_NUM_RECORDS 
                                        RECORD_BITMAP_SIZE = MAX_NUM_RECORDS/8*/
#define MAX_LEN_DIRECTORY		    16  /* Assumed to be max 16 characters        */


/* 
    DBM state 
 */
typedef enum
{
  
  DBM_NOT_INITIALISED = 0, 
  DBM_INITIALISED 

} T_DBM_STATE;

/* 
    Database state 
*/
typedef enum
{ 

  CLOSED = 0, 
  OPEN,
  IN_USE,
  UNUSED_ENTRY = 0xFF

} T_DB_STATE;

#ifdef FFS_CLOSE_BEFORE_OPEN

typedef struct
{

  UBYTE    fld_ctr;
  T_FFS_FD filehandle;

} FileHandleRecord;

#endif

/* 
    Field record
 */
typedef struct
{

  USHORT	  FieldID;								                /* Elementary file identifier		                        */
  T_DB_TYPE	DBType;									                /* database type (UNMANAGED, FREELIST)                  */
  USHORT	  RecordSize;								              /* Size of data in data base record	                    */
  UBYTE		  NumOfRecords;							              /* Number of records				                            */
  UBYTE		  UsedRecords;							              /* Number of used records			                          */
  UBYTE		  RecordBitMap [RECORD_BITMAP_SIZE];		  /* Bitmap representing whether record is present or not	*/
  UBYTE		  Clean;          							          /* File consistency: 0x01 => Clean, 0x00 => Not Clean	  */
  UBYTE		  SortIndexList [MAX_NUM_OF_SORT_INDEXS];	/* Number of associated index files                     */
  UBYTE*    SortedLists [MAX_NUM_OF_SORT_INDEXS];	  /* Sorted lists			                                    */

#ifndef FFS_CLOSE_BEFORE_OPEN
  T_FFS_FD  FFSFileHandle;		                      /* FFS File Handle for User file				                */
#endif

  UBYTE     NextRecordNum;                          /* To take care of non-seqential write                  */

} T_DBM_FIELDRECORD;


typedef struct 
{

  UBYTE		            DBDirectory[MAX_LEN_DIRECTORY];	/* Directory path					                              */
  UBYTE		            NumOfFiles;								      /* Maximum files in that database					              */
  UBYTE		            UsedFiles;								      /* Number of used files				                          */
  UBYTE		            Tracked_Clean;								  /* Tracked: History log to be maintained or not
                            									           Clean: Database is consistent or not                 */
  T_DB_STATE          DBState;								        /* Database state					                              */

  T_FFS_FD            FFSFileHandle;                  /* FFS File Handle for DD_<db_handle>                   */

#ifdef FFS_CLOSE_BEFORE_OPEN
  FileHandleRecord READ_OPEN_FIELDS [MAX_OPEN_READ_PER_DB];   /* fields opened for read only                  */
  FileHandleRecord WRITE_OPEN_FIELDS [MAX_OPEN_WRITE_PER_DB]; /* fields opened for read/write both            */
  UBYTE  old_read;                                            /* remeber oldest open                          */
  UBYTE  old_write;                                           /* remeber oldest read                          */
#endif

  T_DBM_FIELDRECORD*  ptrFieldRecord;				          /* pointer to fields		                                */

} T_DBM_MASTERRECORD;


/* 
    Which sort ? 
*/
typedef enum
{ 

  QUICK_SORT = 0, 

#ifdef INSERTION_SORT
  INCREMENTAL_SORT
#endif

} T_DB_SORT;

#endif