[geotk] Explicit TIFF plugin register

[sorel johann]

Hello

I agree It's a problem.
ImageIO do not use the usual meta-inf/service configuration for 
discovery of new readers. It uses somekind of predecessor.

Here is what I use in Puzzle-GIS for the geotoolkit module (In the 
installer class):
//force netbeans platform classloader to load image readers.
Registry.setDefaultCodecPreferences();
WorldFileImageReader.Spi.registerDefaults(null);
WorldFileImageWriter.Spi.registerDefaults(null);
ImageIO.scanForPlugins();

Hints.putSystemDefault(Hints.LENIENT_DATUM_SHIFT, Boolean.TRUE);

//force netbeans platform classloader to load the derby and postgres driver
//often use for EPSG databases
try {
        Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
        Class.forName("org.postgresql.Driver").newInstance();
} catch (Exception ex) {
        Exceptions.printStackTrace(ex);
}


And when I have additional module with image reader/writer I have :
ImageIO.scanForPlugins();
GeoTiffImageReader.Spi.registerDefaults(null);
DimapImageReader.Spi.registerDefaults(null);


Perhaps Martin Desruisseaux will give more details on this behavior.


johann



On 11/07/2011 08:48, Thys Meintjes wrote:
> Hi  All,
>
> I'm writing a Netbeans RCP based app and had a bad time loading 
> GeoTIFF's. After trolling through the mailing list, especially
> this thread: 
> http://lists.osgeo.org/pipermail/geotoolkit/2011-January/000466.html, 
> I fixed the problem by explicitly registering
> the TIFF readers as follows:
>
>    private void explicitRegisterTIFF() {
>         ImageIO.scanForPlugins();
>         IIORegistry.getDefaultInstance().registerServiceProvider(new 
> com.sun.media.imageioimpl.plugins.tiff.TIFFImageReaderSpi(), 
> ImageReaderSpi.class);
>         IIORegistry.getDefaultInstance().registerServiceProvider(new 
> GeoTiffImageReader.Spi("TIFF"), ImageReaderSpi.class);
>     }
>
>
> While this works I'm concerned that it point to a deeper problem 
> within the app. I would like the service discovery mechanism to work
> as intended. Especially if I ever needed any other readers to work 
> "out of the box".
>
> Any thought on this ?
>
> thanks and regards
>
> -- 
> Thys Meintjes
>
>
>
> _______________________________________________
> Geotoolkit mailing list
> Geotoolkit at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/geotoolkit

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