xdi2 core

Implementation of the XDI graph model and basic features [.jar]

Topics

• Implementation of the XDI graph model
• Available backend storage for XDI graphs
• How to (de-)serialize XDI graphs
• How to work with multiplicity
• How to work with dictionaries
• How to work with link contracts and policies

Maven Dependency

<dependency>
	<groupId>xdi2</groupId>
	<artifactId>xdi2-core</artifactId>
	<version>0.1-SNAPSHOT</version>
	<scope>compile</scope>
</dependency>

Quick Example

package xdi2.samples;

import xdi2.core.ContextNode;
import xdi2.core.Graph;
import xdi2.core.impl.memory.MemoryGraphFactory;
import xdi2.core.io.XDIWriterRegistry;
import xdi2.core.xri3.impl.XRI3SubSegment;

public class SimpleCoreSample {

    public static void main(String[] args) throws Exception {

        Graph graph = MemoryGraphFactory.getInstance().openGraph();

        ContextNode root = graph.getRootContextNode();
        ContextNode markus = root.createContextNode(new XRI3SubSegment("=markus"));
        ContextNode name = markus.createContextNode(new XRI3SubSegment("+name"));
        ContextNode email = markus.createContextNode(new XRI3SubSegment("+email"));
        name.createLiteral("Markus Sabadello");
        email.createLiteral("markus.sabadello@gmail.com");

        System.out.println("Serialization in XDI/JSON: \n");
        XDIWriterRegistry.forFormat("XDI/JSON", null).write(graph, System.out);
        System.out.println();

        System.out.println("Serialization in XDI statements:\n");
        XDIWriterRegistry.forFormat("XDI DISPLAY", null).write(graph, System.out);
    }
}