Processing codes describe database links and data manipulation rules.
The D3 dictionary defines file layouts and data structures. Processing codes are stored in dictionaries to further describe database links and data manipulation rules. These processing codes are used by various D3 system processors such as the Update processor, FlashBASIC, and the List processor.
Processing codes are stored in attribute-defining and file-defining items in file dictionaries. They are found in:
| Attribute | Processing Code Type |
|---|---|
| 7 | Output-Conversion |
| 8 | Correlative |
| 14 | Input-Conversion |
| Correlative Processing Codes (FDI) | Correlative processing codes define processing that takes
place during the item selection process and during data input and
output. Codes in the correlative attribute of the file-defining item are processed when the item is filed. Available codes include subroutines calls, bridge correlatives, ID assignments, update stamps, and indexes. When an item is filed using the Update processor, all processing codes defined in the correlative attribute of the file-defining item are processed. Items not filed using the Update processor use the bridge, index, and callx processing codes only. |
| Correlative Processing Codes (ADI) | Codes defined in the correlative attribute of the attribute-defining
item are processed during input and output processing. Many processing codes can be called on the output-conversion attribute of the attribute-defining item, including FlashBASIC subroutines. Note: Called FlashBASIC
subroutines may be Flashed to improve performance.
|
| Input-Conversion processing codes | Input-conversion codes are used to perform preprocessing functions
such as inserting default data. The subroutine is executed after the item is retrieved from the file, but before the item displays on the screen. |
| Output-Conversion processing codes | Codes defined in the output-conversion attribute are processed during input and output processing. |
a (algebraic) processing code, b (bridge) processing code, break-on modifier, c (Concatenate) processing code, c (controlling) processing code, call processing code, callx (write trigger) processing code, Conversion, Correlative, cu (character update) processing code, d (date) processing code, d (dependent value) processing code, Defining attributes, External format, f (f-correlative) processing code, clearfile statement, g (group extract) processing code, i (local index) processing code, i (remote index) processing code, id (item ID) processing code, input-conversion, l (length) processing code, m (mask) processing code, mc (mask character) processing code, mi (must input) processing code, mp (mask packed decimal) processing code, ms (mask alter sort) processing code, mt (mask time) processing code, mx (mask ASCII to hexadecimal) processing code, my (mask hexadecimal to ASCII) processing code, nframe-index command, o (sort values ascending) processing code, output-conversion, p (pattern match) processing code, r (range) processing code, Retrieval of items from files, s (substitution) processing code, t (text extraction) processing code, t (translate) processing code, AQL user exits, v (value limit) processing code, v (within) processing code, x (Display Only) processing code, x (update stamp) processing code, za (assembly code format) processing code, zc (zip code) processing code