DL provides an environment dependable definition, constraining and validation of data in a consistent and foremost easy readable and understandable language with great error reporting to describe and stream data more easy, safe and performant.
ATTENTION: This is the ALPHA release. Still many changes to come!
After many years working with data driven projects i came to love and hate XML and JSON for its great possibilities, but for the lack of good ways to make sure the data is valid and consistent before my application crashes somewhere somehow. Oh and comments are part of the language! ;)
Have a great day!
Benjamin
"Look up to the stars not down on your feet. Be curious!" Stephen Hawking 1942 - 2018
- Download project
- Download Base 42 https://github.com/studio42gmbh/base42
- Download Log 42 https://github.com/studio42gmbh/log42
- Use in your projects
For details to the language check out the Wiki
Find the Javadoc here
The following example gives a short glimpse into the possibilities of DL.
The full example is contained in the DL Examples. For more examples see the Data Language Examples
Especially the example DL Only Example showcases the possibilites of DL.
In its simple uage DL resembles JS like data structures.
/*
* A simple configuration mapped onto a java class in app
*/
Configuration config @export {
login : "Arthur Smith";
id : 1456745655;
depth : 1.5629345793985692;
active : true;
uuid : "ad232384-4a04-4119-9e95-4753f31e3b09";
tags : modern, simple, flexible;
scores : 1.453, 2.534, 9.232, 4.553;
mapped : a, 1.2, b, 2.7, c, 3.3; // always key, value, ...
}With a few lines of Java code you can load the DL already converted into your POJO Configuration class:
package de.s42.dl.examples.simpleconfiguration;
import de.s42.dl.DLType;
import de.s42.dl.core.DefaultCore;
import de.s42.dl.util.DLHelper;
import java.nio.file.Path;
public class Main
{
protected final static Path CONFIG_PATH = Path.of("de/s42/dl/examples/simpleconfiguration/config.dl");
public static void main(String[] args) throws Exception
{
// Setup dl core and map own POJO class Configuration
DefaultCore core = new DefaultCore();
DLType type = core.defineType(Configuration.class, "Configuration");
// Load config -> as it is a dl file with just a single entity we can use this helper method
Configuration config = DLHelper.readInstanceFromFile(core, CONFIG_PATH);
}
}This is the Data Class Configuration:
package de.s42.dl.examples.simpleconfiguration;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
public class Configuration
{
protected String login;
protected UUID uuid;
protected int id;
protected double depth;
protected boolean active;
protected String[] tags;
protected final List<Double> scores = new ArrayList<>();
protected Map<String, Double> mapped = new HashMap<>();
// ... getters and setters
}Here are some screenshots of projects we have developed internally to test DL. We built a whole data driven opengl test engine on DL already and tried 2 test projects with it.
- Define data JSON-like
- Define types, enums and annotations for describing and validating the structure of your data
- Standardized streamable binary format
- Java integration
- Rich set of existing types, annotations and pragmas
- Extend types, annotations, pragmas
- Define types directly from java classes with DLCore.defineTypeFromClass(...)
The current ALPHA state means that there will still be regular and potentially breaking changes in DL. During the ALPHA phase Java will remain the supported integration language.
The BETA phase will provide a stable DL. The focus will be on stability and performance. In this phase new language integrations will be added.
This are the overall next bigger features:
- Finish DL specification
- Explore expressions in Assignments
- Explore combined annotations (for contracts etc.)
- Improve performance of readers and writers
- Extend the unit tests to cover even more examples and constructs
- Add integration for C++
- Add integration for C#
- Add integration for Python
- Add integration for JS
For more information check out the Wiki