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https://github.com/exasol/exasol-virtual-schema-lua
Virtual Schema from Exasol to Exasol implemented in Lua
https://github.com/exasol/exasol-virtual-schema-lua
exasol exasol-integration virtual-schema
Last synced: 6 days ago
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Virtual Schema from Exasol to Exasol implemented in Lua
- Host: GitHub
- URL: https://github.com/exasol/exasol-virtual-schema-lua
- Owner: exasol
- License: mit
- Created: 2022-03-01T09:52:07.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-05-31T14:22:19.000Z (6 months ago)
- Last Synced: 2024-05-31T16:21:11.779Z (6 months ago)
- Topics: exasol, exasol-integration, virtual-schema
- Language: Java
- Homepage:
- Size: 244 KB
- Stars: 1
- Watchers: 8
- Forks: 1
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Exasol Virtual Schema (Lua)
[](https://github.com/exasol/exasol-virtual-schema-lua/actions/workflows/ci-build.yml)
Abstract read access from Exasol to Exasol via a Virtual Schema.
## Features
* Access a local Exasol schema through a Virtual Schema
## Table of Contents
### Information for Users
* [User Guide](doc/user_guide/user_guide.md)
* [Changelog](doc/changes/changelog.md)
### Information for Contributors
Requirement, design documents and coverage tags are written in [OpenFastTrace](https://github.com/itsallcode/openfasttrace) format.
* [Developer Guide](doc/developer_guide/developer_guide.md)
### Runtime Dependencies
#### Lua Dependencies
Running the Exasol Virtual Schema (Lua) requires an Exasol database with built-in Lua 5.4 or later.
| Dependency | Purpose | License |
|------------------------------------------|--------------------------------------------------------|-------------------------------|
| [Lua CJSON][luacjson] | JSON parsing and writing | MIT License |
| [remotelog][remotelog] | Logging through a TCP socket | MIT License |
`remotelog` has a transitive dependency to [LuaSocket][luasocket] (MIT License). Note that Lua CSON and LuaSocket are pre-installed on an Exasol database.
For local unit testing you need to install them on the test machine though.
[luacjson]: https://www.kyne.com.au/~mark/software/lua-cjson.php
[luasocket]: https://github.com/diegonehab/luasocket
[remotelog]: https://github.com/exasol/remotelog-lua
### Test Dependencies
#### Unit Test Dependencies
Unit tests are written in Lua.
| Dependency | Purpose | License |
|----------------------|--------------------------------------------------------|-------------------------------|
| [busted][busted] | Unit testing framework | BSD License |
| [Mockagne][mockagne] | Mocking framework | MIT License |
[busted]: https://lunarmodules.github.io/busted/
[mockagne]: https://github.com/vertti/mockagne
#### Integration Test Dependencies
The integration tests require `exasol-testcontainers` to provide an Exasol instance. They are written in Java and require version 11 or later.
See also: Java [Dependencies](dependencies.md).
### Build Dependencies
This project has a complex build setup due to the mixture of Lua and Java. [Apache Maven](https://maven.apache.org/) serves as the main build tool.
Lua build steps are also encapsulated by Maven.
| Dependency | Purpose | License |
|-------------------------------------------|--------------------------------------------------------|-------------------------------|
| [Amalg][amalg] | Bundling Lua modules (and scripts) | MIT License |
| [LuaRocks][luarocks] | Package management | MIT License |
[amalg]: https://github.com/siffiejoe/lua-amalg
[luarocks]: https://luarocks.org/
See also: Java [Dependencies](dependencies.md).