"Setting Extension Dependencies"

petar_r

Dear all,

I am trying to build a RapidMiner extension that relies on classes from another extension (the Linked Open Data extension). I followed the instructions for adding extension dependencies given in "How to Extend RapidMiner 5" and also this related thread: http://rapid-i.com/rapidforum/index.php/topic,6500.0.html. Basically, these are the changes I did inside the build.xml:

<fileset id="build.dependentExtensions" dir="..">
		<include name="RapidMiner_Extension_LOD/build.xml" />
</fileset>

and:

<property name="extension.dependencies" value="rmx_lod[1.0]" />

Also, the whole LOD extension project is added as a dependency to my current project, not as a jar.

However, after running RapidMiner, the new extension is not present in the Operators view, even though there are no errors or exceptions in the log (says that the new extension was successfully registered). And also, the operators from the LOD extension are doubled (each LOD operator appears twice).

I have tested the extension without adding dependency to the LOD extension (and of course without the operators that rely on classes from the LOD extension) and everything works just fine.

I will be grateful for any help you can provide!

Best,

Petar

Marco_Boeck

Hi,

usually such errors occur because you are loading extension classes twice. Can you check the following folders for your extensions:

1) USER_HOME/.RapidMiner5/managed (remove from the .xml file as well)
2) IDE_WORKSPACE/RapidMiner/lib/plugins

if you have duplicates, remove all of them except for one version of each extension in the 2) folder. Make sure that the versioning of the LOD extension matches your required extension. If that does not help, please post the full startup log of RapidMiner Studio.

Regards,
Marco