Dear all,
I need to pass around the results of my coverage processing (a
Coverage2D, or a geotiff, both are acceptable) through an XML (as a
xsd:base64Binary). The coverages will be VERY small.
In order to do that, I need to serialize the object (the coverage). I
have found some code doing something like that:
public static byte[] toBytes(Object object){
java.io.ByteArrayOutputStream baos = new
java.io.ByteArrayOutputStream();
try{
java.io.ObjectOutputStream oos = new
java.io.ObjectOutputStream(baos);
oos.writeObject(object);
}catch(java.io.IOException ioe){
}
return baos.toByteArray();
}
But it does not seem to work with coverages:
Exception in thread "main" java.lang.IllegalArgumentException: No
Serializers available for the ColorModel.
at
javax.media.jai.remote.SerializableRenderedImage.<init>(SerializableRenderedImage.java:507)
at
javax.media.jai.remote.SerializableRenderedImage.<init>(SerializableRenderedImage.java:390)
at
org.geotools.coverage.grid.GridCoverage2D.writeObject(GridCoverage2D.java:1034)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at ch.uzh.geo.tomko.service.VService.toBytes(VService.java:492)
It seems that specific serializers are invoked for the rendered image.
Can anyone please point me to a solution? Note that my coverage
currently does not have a color model assigned (it has only 6 values -
In general I need it for DEMs etc...). I tried to set the coverage
ViewType to Geophysics or Rendered, but that did not help.
I need the actual values of the cells to be preserved in the output.
Thank for any help,
Martin
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