https://github.com/codiepp/pl_lmdb

Prolog interface to LMDB (Lightning Memory-mapped Database)
https://github.com/codiepp/pl_lmdb

hacktoberfest lmdb prolog

Last synced: about 18 hours ago
JSON representation

Prolog interface to LMDB (Lightning Memory-mapped Database)

• Host: GitHub
• URL: https://github.com/codiepp/pl_lmdb
• Owner: CodiePP
• License: gpl-3.0
• Created: 2021-06-25T17:58:13.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2022-06-03T20:29:34.000Z (over 2 years ago)
• Last Synced: 2025-01-20T21:16:48.005Z (1 day ago)
• Topics: hacktoberfest, lmdb, prolog
• Language: C
• Homepage:
• Size: 94.7 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        

# Interfacing to LMDB from Prolog

[![building the package for SWI Prolog](https://github.com/CodiePP/pl_lmdb/actions/workflows/compilation.yml/badge.svg?branch=main)](https://github.com/CodiePP/pl_lmdb/actions/workflows/compilation.yml)

[LMDB](http://www.lmdb.tech/doc/) is a very fast database which maps committed records into memory.

## compilation

```sh

aclocal --force && autoheader --force && autoconf --force

```

then run

```sh

./configure

```

then call `make swi` to compile for SWI Prolog, or `make gp` to compile for GNU Prolog.

A simple `make` will produce both.

## installation (SWI Prolog)

```sh

mkdir -p ${HOME}/lib/sbcl

cp src/lmdb.qlf ~/lib/sbcl/

cp pllmdb-* ~/lib/sbcl/pllmdb

```

add to the search path for SWI Prolog:

```sh

echo ":- assertz(file_search_path(sbcl,'${HOME}/lib/sbcl'))." >> ${HOME}/.config/swi-prolog/init.pl

```

## tests

run `make check` to start all tests using SWI Prolog and GNU Prolog. Note the time to completion.

this test will populate a database with one million of records:

```sh

swipl -l test/t3.pl -g test

```

this test reads them all back and verifies them:

```sh

swipl -l test/t4.pl -g test

```