 | FATS - Fast Access Tree System | ||
| Table of Contents | ||
 | Converting FABS Plus Files to FATS | ||
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Converting FABS Plus Files to FATS
Introduction Parameters Protocol of Processing
Introduction
The FATS Toolkit supports a calling interface that is 100% compatible with the program FABS-Plus Net of Computer Control Systems. There is no need to change your source code. You just need to change obj-/dll files to use FATS in existing projects, for example in the MS-DOS environment you only have to replace the FABSP.OBJ module with the FATS.obj module.
In order to obtain a speed increase, a completely new file structure had to be implemented in FATS. With the enclosed converting program it is possible to convert existing FABS Plus files to the new file format of FATS.
On the FATS disk you find the object file FATSCONV.OBJ that you link together with your version of FABS Plus to create the converting program:
Through it you receive the executable program FATSCONV.EXE.
One of two different steps is necessary to convert the files:
The converting program needs at least 128 KB free memory.
By providing more memory the program makes an additional test of corrupted record numbers, e.g. duplicates.
The converting program is started from the dos command line like this:
Parameters:
| /0 | FABS PLUS files (version 3.x) |
| /1 | FABS PLUS files (version 4.x) |
| /8 | FABS86 files |
| /P{filename} | While converting a protocol is created by FATS.parameter specifies the filename of the protocol. If you leave the parameter out the file is created with the filename FATSCONV.LST. If you do not indicate a file specification, all files with the file name extension KEY are converted (*.KEY). |
Examples:
FATSCONV /0
All FABS Plus files of the version 3.x with the file extension KEY are converted into the FATS file format.
FATSCONV /1
All FABS Plus files of the version 4.x with the file extension KEY are converted into the FATS file format.
FATSCONV *.INX /1
With this command all FABS Plus 4.x index files with the extension .INX are converted into the new format.
FATSCONV ARTICLE.INX /0
Only the FABS Plus 3.x index file ARTICLE.INX is converted.
The following screen display appears after starting the program:
Current drive/directory: F:\DATA\*.*
——————————————————————— files sorted according to size occupies 39,274,496 bytes
POS .KEY 1024 01.05.1993 09:42:32 Arch. 1
TIME .KEY 1024 01.05.1993 09:42:34 Arch. 2
MINORDER.KEY 1024 01.05.1993 09:42:36 Arch. 3
COMMISS .KEY 1024 01.05.1993 09:42:34 Arch. 4
MINDER .KEY 1024 01.05.1993 09:42:34 Arch. 5
PROJECTS.KEY 1024 01.05.1993 09:42:30 Arch. 6
PERSONAL.KEY 1024 01.05.1993 09:46:04 Arch. 7
BUCHUNG .KEY 7168 09.01.1992 14:07:50 Arch. 8
CLEARING.KEY 11264 04.07.1993 14:29:32 Arch. 9
PRIZES .KEY 12288 27.06.1993 12:48:22 Arch. 10
LIEFER .KEY 22528 01.07.1993 10:00:00 Arch. 11
ADDRESS .KEY 24576 27.06.1993 12:56:22 Arch. 12
WARENGRP.KEY 26624 04.07.1993 14:47:56 Arch. 13
LAGER .KEY 150528 03.07.1993 12:26:56 Arch. 14
ORDER .KEY 366592 03.07.1993 19:27:46 Arch. 15
VSTAMM .KEY 992256 04.07.1993 16:40:06 Arch. 16
CUSTOMER.KEY 4345856 08.07.1993 15:49:50 Arch. 17
ARTLONG .KEY 7820288 04.07.1993 19:38:56 Arch. 18
ARTICLES.KEY 25487360 08.07.1993 15:04:12 Arch. 19
————————————————————————————————————————————————————————————————————————————————
Converted: 45945 of 116399
file: ARTICLES.KEY key 2 of 4 Deleted: of 243
Checked: 116399 of 465596
The files are sorted by size, i.e. the biggest file is converted last. Because FATS files need more less disk space than FABS Plus files the available capacity of the hard disk should be sufficient.
The files are converted in three passes:
1) Keys are converted into the new format.
2) The integrity of the keys is checked.
3) Deleted records are noted.
The FABS Plus file gets replaced by the FATS file if all of the three passes executed successfully.
While converting a protocol is created by FATS, that can be read in after processing to localize errors.
The result of processing is summarized in a single record of 80 chars for each file:
| pos. | length | description |
| 1 | 13 | name of file |
| 14 | 10 | blank file was correctly converted *ERROR* file wasn‘t converted *WARNING* file was converted, integrity seems to be doubtful. |
| 24 | 4 | 000 file wasn‘t converted 001 file was converted |
| 28 | 4 | Errorcode of FABS-Plus, e.g. "027 " |
| 32 | 4 | Errorcode of FATS |
| 36 | 43 | Description of error |
| 79 | 2 | ASCII 13, 10 |
By providing more memory the program makes an additional test of corrupted record numbers which are noted in the protocol as *WARNING*. The affected index file should be reorganized.
FABS errorcode 253 indicates a corrupted or incompatible index file. Maybe a wrong value was specified while starting the program (/0 == FABS 3.x, /1 == FABS 4.x).
The meaning of all other possible errorcodes could be read in the previous chapter.
A typical protocol:
POS.KEY 001 000 000
TIME.KEY 001 000 000
MINORDER.KEY 001 000 000
COMMISS.KEY 001 000 000
MINDER.KEY *ERROR* 000 253 000 No FABS-Plus file
PROJECTS.KEY 001 000 000
PERSONAL.KEY 001 000 000
BUCHUNG.KEY 001 000 000
CLEARING.KEY 001 000 000
PRIZES.KEY 001 000 000
LIEFER.KEY 001 000 000
ADDRESS.KEY *WARNING* 001 000 000 record numbers inconsistent !
WARENGRP.KEY 001 000 000
LAGER.KEY 001 000 000
ORDER.KEY 001 000 000
VSTAMM.KEY 001 000 000
CUSTOMER.KEY 001 000 000
ARTLONG.KEY 001 000 000
ARTICLES.KEY 001 000 000
© 2008 
GCS Software, Udo Gertz