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Maven Central

Metreeca/Link

Metreeca/Link is a model-driven Java framework for rapid REST/JSON-LD backend development.

Its engine automatically converts high-level declarative JSON-LD models into extended REST APIs supporting CRUD operations, faceted search, data validation and fine‑grained role‑based access control, relieving backend developers from low-level chores and completely shielding frontend developers from linked data technicalities.

Metreeca/Link is server and storage-agnostic and may be easily connected to your solution of choice.

Getting Started

  1. Add the framework to your Maven configuration
<project>

    <dependencyManagement>
        <dependencies>

            <dependency>
                <groupId>com.metreeca</groupId>
                <artifactId>metreeca-link</artifactId>
                <version>${link.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

        </dependencies>
    </dependencyManagement>

    <dependencies>

        <dependency> <!-- server connector -->
            <groupId>com.metreeca</groupId>
            <artifactId>metreeca-jse</artifactId>
        </dependency>

        <dependency> <!-- storage connector -->
            <groupId>com.metreeca</groupId>
            <artifactId>metreeca-rdf4j</artifactId>
        </dependency>

    </dependencies>

</project>
  1. Write your first server and launch it
import com.metreeca.jse.JSEServer;

import static com.metreeca.rest.Response.OK;
import static com.metreeca.rest.formats.TextFormat.text;

public final class Hello {

  public static void main(final String... args) {
    new JSEServer()

        .delegate(context -> request ->
            request.reply(response -> response
                .status(OK)
                .body(text(), "Hello world!")
            )
        )

        .start();
  }

}
  1. Access you API
% curl -i http://localhost:8080/

HTTP/1.1 200 OK
Content-Type: text/plain
Content-Length: 12

Hello world!
  1. Delve into the the docs to learn how to publish and consume your data as model-driven REST/JSON‑LD APIs…

Modules

area javadocs description
core metreeca‑json shape-based JSON modelling framework
metreeca‑rest model-driven REST publishing framework
data metreeca‑xml XML/HTML codecs and utilities
metreeca‑rdf RDF codecs and utilities
server metreeca‑jse Jave SE HTTP server connector
metreeca‑jee Servlet 3.1 containers connector
storage metreeca‑rdf4j RDF4J-based SPARQL repository connector

Support

  • open an issue to report a problem or to suggest a new feature
  • start a conversation to ask a how-to question or to share an open-ended idea

License

This project is licensed under the Apache 2.0 License – see LICENSE file for details.

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A model-driven Java framework for rapid REST/JSON-LD backend development.

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