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Hi Moda:
GeoTools uses the Java "Factory SPI" system to find the different factories on the classpath. OSGi mangles classpaths so that the contents are only "published" by package; and what is being used by FactorySPI to wire things up is the META_INF/services directory.
The only solution we found for uDig was to place all the geotools jars into a single OSGi bundle. A member of our community repackaged GeoTools with the correct OSGi manifests to wire things up but did not have a mandate to help push that back into the core library.
You will find these topics covered in our user guide:
And the proposal to fix the manifests in geotools:
If you would like to arrange a patch for the above we would be glad to review; right now it is too big a job to tackle without interested users testing and/or paying for the work to be done :-(
Jody
On 05/09/2009, at 7:03 AM, Moda, Frank wrote:
Hello,
I am currently using Geotools in a project that is to be deployed into Apache Servicemix as an OSGI bundle. As part of the program, it creates a ReferencingFactoryFinder to get a MathTransformFactory. This Factory uses the Lambert_Azimuth_Equal_Area Projection to perform transform operations.
When running from the command line (using commands like “mvn jetty:run” or “mvn camel:run”), the program executes correctly. It is able to discover about 25 different Projections, one of which is the Lambert_Azimuth_Equal_Area Projection that I am using. I believe it is able to find these by looking in the gt-referencing package, under the META-INF/services directory, where it specifies an implementation of MathTransformFactory and providers for MathTransformProvider.
However, when I turn the project into an OSGI bundle, and place it in servicemix, it finds no projections, and fails on FactoryException: org.opengis.referencing.NoSuchIdentifierException: No transform for classification "Lambert_Azimuthal_Equal_Area". My belief is that is not seeing the META-INF/services directory that is included within a geotools osgi bundle I created as a combination of gt-referencing and gt-metadata. I was wondering if anyone has been able to successfully use this referencing technique within servicemix, and if so, how do I set up the geotools in servicemix for it to be seen correctly? For reference, I am using version 2.5.3 of geotools.
Thanks in advance,
Frank
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