How to get an image into an SVG document?

[Jan Willem Lokin]

Hi,

Below is some code that I'm trying to use to get an image into a SVG document. 
If I subsequently render the resulting image on a JSVGCanvas, I get an 
exception:

org.apache.batik.bridge.BridgeException: null:-1
The attribute "xlink:href" of the element <image> is required
    at 
org.apache.batik.bridge.SVGImageElementBridge.buildImageGraphicsNode(Unknown 
Source)
    at org.apache.batik.bridge.SVGImageElementBridge.createGraphicsNode(Unknown 
Source)
    at org.apache.batik.bridge.GVTBuilder.buildGraphicsNode(Unknown Source)
    at org.apache.batik.bridge.GVTBuilder.buildComposite(Unknown Source)
    at org.apache.batik.bridge.GVTBuilder.build(Unknown Source)
    at org.apache.batik.swing.svg.GVTTreeBuilder.run(Unknown Source) 

However, if I serialize to document to a file, it will render just fine if I 
read in the file and render it.

I must have missed something somewhere, but what?

-+- Jan Willem Lokin -+-




The code:

package svg;

import org.apache.batik.dom.svg.SVGDOMImplementation;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;

public class SVGPicture {

    private final int height;
    private final int width;
    private final Element svgRoot;
    private final Document document;
    private static final String svgNS = SVGDOMImplementation.SVG_NAMESPACE_URI;

    public SVGPicture(int width, int height) {
        DOMImplementation impl = SVGDOMImplementation.getDOMImplementation();
        document = impl.createDocument(svgNS, "svg", null);
        svgRoot = document.getDocumentElement();

        // Set the width and height attributes on the root 'svg' element.
        svgRoot.setAttributeNS(null, "width", Integer.toString(width));
        svgRoot.setAttributeNS(null, "height", Integer.toString(height));

        this.height = height;
        this.width = width;
    }

    public Document getDocument() {
        return document;
    }

    public void image(String fileName) {
        Element image = document.createElementNS(svgNS, "image");
        image.setAttributeNS(null, "width", Integer.toString(width));
        image.setAttributeNS(null, "height", Integer.toString(height));
        image.setAttributeNS(null, "xlink:href", fileName);
        svgRoot.appendChild(image);
    }
}





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