Difference between revisions of "Primes"
| Line 17: | Line 17: | ||
The program only needs a cobol compile process, which is as follows: |
The program only needs a cobol compile process, which is as follows: |
||
<pre> |
<pre> |
||
| − | /usr/bin/cobc - |
+ | /usr/bin/cobc -m primesgen.cbl -T primesgen.out |
</pre> |
</pre> |
||
This results in the program module file '''primesgen.so''' and the compilation listing [[primesgen.out]]. |
This results in the program module file '''primesgen.so''' and the compilation listing [[primesgen.out]]. |
||
| + | == primesui == |
||
| − | |||
| + | The program source code file is available for download here: [https://wiki.webhuis.nl/images/primesgen.cbl primesui.cbl ]. The program has to be compiled as a module or a subprogram, it cannot be executed directly.<br /> |
||
| − | == Sample database == |
||
| + | The program only needs a cobol compile process, which is as follows: |
||
| − | The [[employee database]] is a very simple database, with one table containing three lines. The pg_dump file is in the link. |
||
| − | === The cobc GNUCobol compilation === |
||
| − | The command invoking the precompile process is as follows: |
||
<pre> |
<pre> |
||
| − | /usr/bin/cobc - |
+ | /usr/bin/cobc -m primesui.cbl -T primesui.out |
</pre> |
</pre> |
||
| − | This results in the |
+ | This results in the program module file '''primesui.so''' and the compilation listing [[primesui.out]]. |
| + | == primes == |
||
| − | |||
| + | The program source code file is available for download here: [https://wiki.webhuis.nl/images/primesgen.cbl primes.cbl ]. The program has to be compiled as a module or a subprogram, it cannot be executed directly.<br /> |
||
| − | |||
| + | The program needs a precompile process, which is as follows: |
||
| + | <pre> |
||
| + | /usr/bin/gixsql primes.cbl primes.cbsql -S -I . -e ".,*.cpy,*.CPY" |
||
| + | </pre> |
||
| + | This results in the cobol program file '''primes.cbsql''' [[primes.cbsql]].<br /> |
||
| + | The next steps is the cobol compilation itself: |
||
| + | <pre> |
||
| + | /usr/bin/cobc -m primes.cbsql -l:libgixsql.so -T primes.out |
||
| + | </pre> |
||
| + | This results in the program module file '''primes.so''' and the compilation listing [[primes.out]]. |
||
<hr/> |
<hr/> |
||
| − | Back to: [[ |
+ | Back to: [[Cobol and PostgreSQL]] |
Revision as of 21:34, 9 December 2025
The primes program is purely for demonstration purposes, it would be nonsensical to generate primes and retrieve the dividers from a database. The subprograms are in fact objects, containing methods and data.
Program structure
The program consists of a main program and three subprograms. The main program primesmain.cbl is invoked by the command 'primesmain report'. The subprograms implementing the objects and methods are:
- primesui, providing the user interface as a print file
- primesgen, manages the proces of primes generation and reporting, it does the prime determination too.
- primes
Only the primes program makes use of the PostgreSQL database and so a good demonstration of three tier design.
primesmain
The program source code file is available for download here: primesmain.cbl . When executed primesmain puts out the file primes.prt.
The program only needs a cobol compile process, which is as follows:
/usr/bin/cobc -x primesmain.cbl -T primesmain.out
This results in the executable program file primesmain and the compilation listing pgcobol.out.
primesgen
The program source code file is available for download here: primesgen.cbl . The program has to be compiled as a module or a subprogram, it cannot be executed directly.
The program only needs a cobol compile process, which is as follows:
/usr/bin/cobc -m primesgen.cbl -T primesgen.out
This results in the program module file primesgen.so and the compilation listing primesgen.out.
primesui
The program source code file is available for download here: primesui.cbl . The program has to be compiled as a module or a subprogram, it cannot be executed directly.
The program only needs a cobol compile process, which is as follows:
/usr/bin/cobc -m primesui.cbl -T primesui.out
This results in the program module file primesui.so and the compilation listing primesui.out.
primes
The program source code file is available for download here: primes.cbl . The program has to be compiled as a module or a subprogram, it cannot be executed directly.
The program needs a precompile process, which is as follows:
/usr/bin/gixsql primes.cbl primes.cbsql -S -I . -e ".,*.cpy,*.CPY"
This results in the cobol program file primes.cbsql primes.cbsql.
The next steps is the cobol compilation itself:
/usr/bin/cobc -m primes.cbsql -l:libgixsql.so -T primes.out
This results in the program module file primes.so and the compilation listing primes.out.
Back to: Cobol and PostgreSQL
