On Wed, Jul 11, 2012 at 6:30 PM, Rob Marianski <[email protected]>wrote:
> > If you look into the settings you'll find a threshold at which
> > the current system decides whether to use a memory or a
> > file based imageinputstream (and the same goes for the output).
>
> Just to make sure I'm looking in the right place, these are the jai
> settings in the geoserver admin correct?
>
> http://docs.geoserver.org/stable/en/user/webadmin/server/JAI.html
Nope, it's in "coverage access", the field is "ImageIO cache memory
threshold".
>
>
> > The above system requires image reading/writing code to use
> > the GeoTools ImageIOExt class to get the image input streams,
> > something that the WMSCoverageReader is indeed not doing.
> > That indeed needs fixing, jira + patch welcomed
>
> And the WMSCoverageReader is what handles cascading layers? Does this
> mean that the jai settings mentioned above won't be honored in this
> context currently?
>
Exactly. It's a bug that needs fixing. The modified code should look
something
like the following:
// issue the request and wrap response in a grid coverage
ImageInputStream iis = null;
try {
if(LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("Issuing request: " + mapRequest.getFinalURL());
}
GetMapResponse response = wms.issueRequest(mapRequest);
try {
iis =
ImageIOExt.createImageInputStream(response.getInputStream());
BufferedImage image = ImageIO.read(iis);
if (image == null) {
throw (IOException) new IOException("GetMap failed: "
+ mapRequest.getFinalURL());
}
return gcf.create(layers.get(0).getTitle(), image,
gridEnvelope);
} finally {
response.dispose();
}
} catch (ServiceException e) {
throw (IOException) new IOException("GetMap
failed").initCause(e);
} finally {
if(iis != null) {
iis.close();
}
}
But I had no time to try that out
Cheres
Andrea
--
Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead
Via Poggio alle Viti 1187
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