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Difference between revisions of "XDI4j Tutorial 2"

(Example)
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{{#eclipseproject:technology.higgins|eclipse_custom_style.css}}
 
{{#eclipseproject:technology.higgins|eclipse_custom_style.css}}
 
[[Image:Higgins_logo_76Wx100H.jpg|right]]
 
[[Image:Higgins_logo_76Wx100H.jpg|right]]
== Example ==
+
This tutorial explains how to serialize and deserialize in any of the XDI serialization formats.
 +
 
 +
One typical application would be to read an XDI graph from a file into memory, perform a few operations on it, and then store it again to file.
 +
 
 +
== Serialization / Deserialization ==
  
 
This example app shows how to output a graph in different serialization formats.
 
This example app shows how to output a graph in different serialization formats.
  
 
<pre>
 
<pre>
 +
/*******************************************************************************
 +
* Copyright (c) 2008 Parity Communications, Inc.
 +
* All rights reserved. This program and the accompanying materials
 +
* are made available under the terms of the Eclipse Public License v1.0
 +
* which accompanies this distribution, and is available at
 +
* http://www.eclipse.org/legal/epl-v10.html
 +
*
 +
* Contributors:
 +
*    Markus Sabadello - Initial API and implementation
 +
*******************************************************************************/
 
package org.eclipse.higgins.xdi4j.tutorial;
 
package org.eclipse.higgins.xdi4j.tutorial;
  
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/**
 
/**
 
  * This example app shows how to output
 
  * This example app shows how to output
  * an graph in different serialization formats.
+
  * a graph in different serialization formats.
 
  *  
 
  *  
 
  * @author msabadello at parityinc dot not
 
  * @author msabadello at parityinc dot not
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graph.createStatement(new XRI3Segment("=markus"), new XRI3Segment("+name"), "Markus");
 
graph.createStatement(new XRI3Segment("=markus"), new XRI3Segment("+name"), "Markus");
 
graph.createStatement(new XRI3Segment("=markus"), new XRI3Segment("+friend"), new XRI3Segment("=giovanni"));
 
graph.createStatement(new XRI3Segment("=markus"), new XRI3Segment("+friend"), new XRI3Segment("=giovanni"));
graph.createStatement(new XRI3Segment("=giovanni"), new XRI3Segment("+friend"), new XRI3Segment("=drummond"));
 
  
 
// output the graph in X3 Simple and XDI/XML
 
// output the graph in X3 Simple and XDI/XML

Revision as of 07:40, 29 January 2010

{{#eclipseproject:technology.higgins|eclipse_custom_style.css}}

Higgins logo 76Wx100H.jpg

This tutorial explains how to serialize and deserialize in any of the XDI serialization formats.

One typical application would be to read an XDI graph from a file into memory, perform a few operations on it, and then store it again to file.

Serialization / Deserialization

This example app shows how to output a graph in different serialization formats.

/*******************************************************************************
 * Copyright (c) 2008 Parity Communications, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Markus Sabadello - Initial API and implementation
 *******************************************************************************/
package org.eclipse.higgins.xdi4j.tutorial;

import org.eclipse.higgins.xdi4j.Graph;
import org.eclipse.higgins.xdi4j.GraphFactory;
import org.eclipse.higgins.xdi4j.impl.memory.MemoryGraphFactory;
import org.eclipse.higgins.xdi4j.io.XDIWriter;
import org.eclipse.higgins.xdi4j.io.XDIWriterRegistry;
import org.eclipse.higgins.xdi4j.xri3.impl.XRI3Segment;

/**
 * This example app shows how to output
 * a graph in different serialization formats.
 * 
 * @author msabadello at parityinc dot not
 *
 */
public class Tutorial2 {

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

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

		// let's create a simple graph

		graph.createStatement(new XRI3Segment("=markus"), new XRI3Segment("+name"), "Markus");
		graph.createStatement(new XRI3Segment("=markus"), new XRI3Segment("+friend"), new XRI3Segment("=giovanni"));

		// output the graph in X3 Simple and XDI/XML

		XDIWriter writer;

		writer = XDIWriterRegistry.forFormat("X3 Simple");
		writer.write(graph, System.out, null);

		writer = XDIWriterRegistry.forFormat("XDI/XML");
		writer.write(graph, System.out, null);

		graph.close();
	}
}

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