otsopack.commons.network.communication.representations.SemanticFormatRepresentation.java Source code

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Here is the source code for otsopack.commons.network.communication.representations.SemanticFormatRepresentation.java

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/*
 * Copyright (C) 2008 onwards University of Deusto
 * 
 * All rights reserved.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution.
 * 
 * This software consists of contributions made by many individuals, 
 * listed below:
 *
 * Author: Pablo Ordua <pablo.orduna@deusto.es>
 */
package otsopack.commons.network.communication.representations;

import java.io.IOException;
import java.io.Writer;

import org.apache.commons.io.IOUtils;
import org.restlet.data.MediaType;
import org.restlet.representation.Representation;
import org.restlet.representation.WriterRepresentation;

import otsopack.commons.data.Graph;
import otsopack.commons.data.SemanticFormat;

public abstract class SemanticFormatRepresentation extends WriterRepresentation {

    private final String data;

    public SemanticFormatRepresentation(MediaType mediaType, String data) {
        super(mediaType);
        this.data = data;
    }

    public SemanticFormatRepresentation(MediaType mediaType, Graph graph) {
        super(mediaType);

        if (!graph.getFormat().equals(getSemanticFormat()))
            throw new IllegalArgumentException("Graph must be in format " + getSemanticFormat()
                    + " a to be supported by " + getClass().getName());

        this.data = graph.getData();
    }

    public SemanticFormatRepresentation(MediaType mediaType, Representation representation) throws IOException {
        super(mediaType);
        this.data = IOUtils.toString(representation.getStream());
    }

    private SemanticFormat getSemanticFormat() {
        return SemanticFormatRepresentationRegistry.getSemanticFormat(getMediaType());
    }

    @Override
    public void write(Writer writer) throws IOException {
        writer.append(this.data);
    }

    public String getData() {
        return this.data;
    }

    @SuppressWarnings("unused")
    public Graph[] getGraphs() throws RepresentationException {
        return new Graph[] { new Graph(this.data, getSemanticFormat()) };
    }
}