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RMLio / rmlmapper-java

The RMLMapper executes RML rules to generate high quality Linked Data from multiple originally (semi-)structured data sources
http://rml.io
MIT License
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Class Not Found: org.rdfhdt.hdt.options.HDTOptions error in the readmetest.java class #207

Closed mrtylmz closed 9 months ago

mrtylmz commented 1 year ago

Hi, I have added the latest version as of now for rmlmapper-java maven dependency into my project

<dependency>
                <groupId> be.ugent.rml </groupId>
                <artifactId>rmlmapper</artifactId>
                <version>6.1.3</version>
            </dependency>

And followed the readme example here - https://github.com/RMLio/rmlmapper-java/blob/master/src/test/java/be/ugent/rml/readme/ReadmeTest.java

When I run this code I am getting following error
"java.lang.ClassNotFoundException: org.rdfhdt.hdt.options.HDTOptions"

Any idea? Thank you!

bjdmeest commented 1 year ago

Hi,

My first guess would be that the HDT dependency isn't properly found, can you try with including the jitpack repo, cfr https://github.com/RMLio/rmlmapper-java/blob/15c9c02c78aa743df02f7e773c2b1a229c3bc377/pom.xml#L56 ?

Op do 8 jun. 2023 19:26 schreef MURAT YILMAZ @.***>:

Hi, I have added the latest version as of now for rmlmapper-java maven dependency into my project

be.ugent.rml rmlmapper 6.1.3

And followed the readme example here - https://github.com/RMLio/rmlmapper-java/blob/master/src/test/java/be/ugent/rml/readme/ReadmeTest.java

When I run this code I am getting following error "java.lang.ClassNotFoundException: org.rdfhdt.hdt.options.HDTOptions"

Any idea? Thank you!

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mrtylmz commented 1 year ago

Thanks for suggestion @bjdmeest . But it did not work out. I think I need to add associated dependency for HDTOptions , but I 'd assume once I have added rmlmapper all necessary dependencies are loaded.

DylanVanAssche commented 1 year ago

Did adding the dependency to your pom.xml work for you?

mrtylmz commented 1 year ago

Did adding the dependency to your pom.xml work for you?

unfortunately no

DylanVanAssche commented 10 months ago

Probably fixed with b89d5725ce9ea32a2739cfeb52de201578ecff62 Can you maybe verify by using the development branch?

philharveyonline commented 9 months ago

I've got the same problem.

I believe the root cause is that rmlmapper:v6.1.3 depends on com.github.rdfhdt:hdt-java:v3.0.5 but hdt-java:v3.0.5 is not in Maven's default repository at maven.org. The latest version there is v2.1.2.

Unfortunately I work in a tightly controlled organization where we can only use dependencies from maven.org, spring.io and google.com (we have to request that the dependencies are copied to our internal mirror).

So your workaround to use jitpack won't work for me.

Would it be possible for you to change your dependencies such that they're all available in maven.org? I'd be happy to help if you think this is feasible.

DylanVanAssche commented 9 months ago

I believe the root cause is that rmlmapper:v6.1.3 depends on com.github.rdfhdt:hdt-java:v3.0.5 but hdt-java:v3.0.5 is not in Maven's default repository at maven.org. The latest version there is v2.1.2.

It is solved in development, no release yet.

Unfortunately I work in a tightly controlled organization where we can only use dependencies from maven.org, spring.io and google.com (we have to request that the dependencies are copied to our internal mirror).

RMLMapper has more dependencies coming from jitpack.

Would it be possible for you to change your dependencies such that they're all available in maven.org? I'd be happy to help if you think this is feasible.

Would require to upload these packages to maven.org, maintain them and patch the RMLMapper to use the Maven ones. The ones that are not on Maven are also for example the FnO ones which we maintain at https://github.com/fnoio. We might upload them to Maven in the future, however we are at limited capacity as this is a resource for our research which we maintain already for a long time. Feel free to send us an e-mail at info@rml.io to discuss opportunities here. RDFHDT is not maintained by us, you will have to convince the RDFHDT maintainers to upload their packages to Maven.