Hi Jody, thanks for those ideas but they will not work for our case. Our
extension actually allows GeoServer to provide OWS interfaces for a dynamic
backing coverage store of our own design, containing many coverages that are
not actually published to GeoServer at all, only discovered at runtime. There
is no concept of a namespace, workspace, or prefix in our backing coverage
store, only a coverage id.
For 1.0 DescribeCoverage responses, it was a simple matter of overriding
ResourceInfo.getPrefixedName().
For 2.0, it was just a matter of implementing the
WCS20DescribeCoverageExtension interface.
But for 1.1, because of how the DescribeCoverageTransformer is coded, we can't
get our desired behavior.
It seems that the 1.1 DescribeCoverageTransformer implementation does not
provide the proper encapsulation of behavior for how the coverage id is written
out in the response. I think my proposed code change would remedy that by
making the CoverageInfo object responsible for returning how the coverage id
should come out in the response (in our case, without a prefix).
Thanks,
Scott
________________________________
From: Jody Garnett [[email protected]]
Sent: Saturday, February 21, 2015 1:45 PM
To: Ellis, Scott - Exelis; [email protected]
Subject: Re: [Geoserver-devel] Request for small code change
Are you trying to hide namespace, prefix or workspace?
If you turn off the global WCS and use the per workspace virtual service you
should get what you need. Or look into how default workspace works.
As for the change open up a big ticket / pull request and be sure to include a
test case :)
On Sat, Feb 21, 2015 at 12:24 PM Ellis, Scott - Exelis
<[email protected]<mailto:[email protected]>> wrote:
Hi, we are writing geoserver extensions and trying to hide the concept of a
namespace from client code.
The code that emits the coverage id in DescribeCoverage responses for WCS 1.0
and 2.0 was extensible, and we were able to implement the behavior we need.
However, for WCS 1.1, the fact that a namespace is prepended to a coverage id
with a colon delimeter is hardcoded here:
project: org.geoserver.gs-wcs1_1
org.geoserver.wcs.response.DescribeCoverageTransformer.java
protected void handleCoverageDescription(CoverageInfo ci) throws
Exception {
start("wcs:CoverageDescription");
element("ows:Title", ci.getTitle());
element("ows:Abstract", ci.getDescription());
handleKeywords(ci.getKeywords());
element("wcs:Identifier", ci.getStore().getWorkspace().getName() +
":" + ci.getName());
handleMetadataLinks(ci.getMetadataLinks(), "simple");
handleDomain(ci);
handleRange(ci);
handleSupportedCRSs(ci);
handleSupportedFormats(ci);
end("wcs:CoverageDescription");
}
Could this line be changed to delegate returning the prefixed coverage id to
the CoverageInfo object? i.e.
element("wcs:Identifier", ci.prefixedName());
That way I could implement the behavior I need in my own CoverageInfo object.
Thanks,
Scott
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