Preparing the Extension Template: Issue with Gradle (unresolved dependencies)
Contributor IHi everyone,
It seems to me i'm missing out on something here. I've downloaded the Extension template, but can't get it running properly. When i start gradle.build via Eclipse (or the ./gradlew initializeExtensionProject OR installExtension in a Command prompt), it fails.
This is the Error in Eclipse when i attempt importing the Project:
Synchronize Gradle projects with workspace failed due to an error in the referenced Gradle build. Could not fetch model of type 'ExtensionProject' using Gradle distribution 'https://services.gradle.org/distributions/gradle-2.3-bin.zip'.
A problem occured configuring root project 'extension'. Could not resolve all dependencies for configuration ':provided'. Could not find com.rapidminer.external:vldocking:1.2.2-SNAPSHOT.
Searched in the following locations: [...]
The PowerShell Error is pretty much the same. I've tried changing the Gradle distribution in the Wrapper, but then i get NullPointerExceptions, and i assume that this isn't the correct way to go anyways.
Changing Java Versions seems to have no effect overall either, but i haven't tried every possible combination, obviously.
What comes to mind, is that Gradle is at 4.7+ by now, and the extension template still uses 2.3. Is there a reason for that?
Philipp S.
Best Answer
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jczogalla
Employee-RapidMiner, Member Posts: 144 
RM Engineering
Hello again!
Can you try this again? It should work now. There was a small hickup with the maven dependencies.
Cheers
Jan0
Answers
Hi Philipp!
The problem seems to be the unresolved dependency com.rapidminer.external:vldocking:1.2.2-SNAPSHOT. We are looking into this and give an update shortly.
Cheers
Jan
Hi I met the same problem here. After I implemented a new operator in the template project and run ./gradlew installExtension, I got the following error messages:
What went wrong:
A problem occurred configuring root project 'rapidminer-textminer'.
> Could not resolve all dependencies for configuration ':provided'.
> Could not resolve com.rapidminer.external:vldocking:1.2.2-SNAPSHOT.
Required by:
com.xiaomi.micloud:rapidminer-textminer:1.0.0 > com.rapidminer.studio:rapidminer-studio-core:8.2.0
> Could not resolve com.rapidminer.external:vldocking:1.2.2-SNAPSHOT.
> Unable to load Maven meta-data from https://jcenter.bintray.com/com/rapidminer/external/vldocking/1.2.2-SNAPSHOT/maven-metadata.xml.
> Could not GET 'https://jcenter.bintray.com/com/rapidminer/external/vldocking/1.2.2-SNAPSHOT/maven-metadata.xml'.
> sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
It seems pretty much the same as what Philipp has been through. Can you help me with that?
Hi @yunhaojohn!
It seems there is a problem with this versions dependencies. You can fix that by adding
to the dependencies block of your gradle.build file. I hope this helps!
Cheers,
Jan
It works to me. Thanks!
Kind of a late reply but yeah, it worked shortly after you posted this
also i had to change the gradle version from 2.3 to 2.4 for some reason, haven't testet whether this would be neccessary still, though.
hi all - I'm just curious...what extensions are you trying to build?
Scott
it's a Part-of-Speech-tagger Package. Part of a Bachelor Thesis for the chair for Databases and Information Systems (AI4) at the University in Bayreuth, Germany. There are multiple such projects, in order to build a full NLP library
wow super interesting! Please let me know when you get it all working (I'm sure you will!). I'm tagging my NLP extension builder colleague @mschmitz...perhaps there are some opportunities here?
Scott