Stardog not able to find custom extractor

Support
1

Hi there,

I'm creating a custom extractor following this example.

However, I got the following error when adding a document via StardocsConnection.

Unknown extractor name: com.some.package.name.CustomExtractor

I have the file META-INF/service/com.complexible.stardog.docs.extraction.RDFExtractor pointing the custom extractor and the following dependency in the pom.xml file

  <dependency>
  	<groupId>com.complexible.stardog.stardocs</groupId>
  	<artifactId>stardog-stardocs-protocols-embedded</artifactId>
  	<version>${stardog.version}</version>
  	<type>pom</type>
  </dependency>

Please let me know what I'm missing.

Thanks!!

2

Is your com.some.package.name.CustomExtractor available on the classpath of the running Stardog server?

3

Ah, that is it. The example uses an embedded server. Mine does not.

I put the JAR that contains the custom extractor into the <STARDOG_HOME>/server/pack directory; restart Stardog server and it works now.

Thank you!

4

FYI: Stardog will, on startup, look for a STARDOG_EXT environment variable, and will bring in any jars it finds there. This proves useful so that in the future if/when you upgrade you don’t have to remember to put external jars inside the new install directory.

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5

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