We want to be able to specify folders in the KNIME settings which can be used to discover Commands on KNIME startup (or just a single, pre-defined folder in the plugins folder of KNIME, e.g. commands-dropin).
We could simply add these folders to the KNIME URLClassLoader in a special implementation of the ResourceAwareClassLoader. However, we have to make sure that all dependencies are resolved gracefully. Therefore, I suggest the following:
- Check the
pom.xml in the .jar (if any, if not just load Command and hope that all dependencies are available).
- Check all dependencies and find out if we have
OSGi bundles for them available.
- Create OSGi
Fragment from pom.xml but replace all .jars which are available as OSGi bundles with Eclipse-Dependencies on these Bundles.
- The resulting
Fragment should only contain project specific .jars.
The very same mechanism can then later be used to create KNIME update-sites from ImageJ2 update-sites. Parts of the code is available in the current ImageJ2 integration (see https://github.com/knime-ip/knip-imagej2/blob/master/org.knime.knip.imagej2.core/src/org/knime/knip/imagej2/core/FragmentWrapperUtil.java).
We want to be able to specify folders in the KNIME settings which can be used to discover
Commands on KNIME startup (or just a single, pre-defined folder in thepluginsfolder of KNIME, e.g.commands-dropin).We could simply add these folders to the KNIME
URLClassLoaderin a special implementation of theResourceAwareClassLoader. However, we have to make sure that all dependencies are resolved gracefully. Therefore, I suggest the following:pom.xmlin the.jar(if any, if not just loadCommandand hope that all dependencies are available).OSGibundles for them available.Fragmentfrompom.xmlbut replace all.jars which are available as OSGi bundles withEclipse-Dependencieson theseBundles.Fragmentshould only contain project specific.jars.The very same mechanism can then later be used to create KNIME update-sites from
ImageJ2update-sites. Parts of the code is available in the currentImageJ2integration (see https://github.com/knime-ip/knip-imagej2/blob/master/org.knime.knip.imagej2.core/src/org/knime/knip/imagej2/core/FragmentWrapperUtil.java).