Generate code from OWL

[Sabino Pariente Juarez]

Dear all,

I'm working with an ontology that contains a large number of classes  and properties and I want to develop a CRUD system using Stardog-Spring.

Nevertheless, it necessary to have Beans (java classes), which represent the OWL classes, which will persist data from a html form to a Stardog database like happens in a relational database.

Do it is very hard, So my question is whether in Stardog, there are any way to generate java code (or Beans) from an OWL file to handle persistence as does JPA (Java Persistence API)

regards

[Conrad Leonard]

Mike's Empire RDF for JPA library has a bean generator that may be a good starting point for you:

https://github.com/mhgrove/Empire

The project comes with bindings for Stardog too.

[Sabino Pariente Juarez]

Dear Conrad

Thank you for reply, It's a good solution, nevertheless I get an error with the pom.xml when load the Empire project on Netbeans and Eclipse IDE. 

Error is "The project com.clarkparsia.empire:examples:0.8.4 (/home/sabino/Descargas/Empire-master/examples/pom.xml) has 1 error

    Non-resolvable parent POM: Could not find artifact com.complexible.empire:Empire-parent:pom:0.8.4 in central (http://repo.maven.apache.org/maven2) and 'parent.relativePath' points at wrong local POM @ line 9, column 10 -> [Help 2]"

Lines in pom.xml are 

      <parent>

<groupId>com.clarkparsia.empire</groupId>

<artifactId>Empire-parent</artifactId>

<version>0.8.4</version>

</parent>

I searched the Maven's central repository, however, I can't found the Empire project.

attached the images from searches on The central repository

​
​

best regards

Sabino Pariente

MC. Sabino Pariente Juárez

spar...@cenidet.edu.mx

pjsa...@gmail.com

Cel: 7771347513

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[Fernando Hernandez]

Hi Sabino,

On Wed, Apr 1, 2015 at 1:25 PM, Sabino Pariente Juarez <pjsa...@gmail.com> wrote:

Dear Conrad

Thank you for reply, It's a good solution, nevertheless I get an error with the pom.xml when load the Empire project on Netbeans and Eclipse IDE. 

 You should use the gradle project for building Empire. We don't use Netbeans internally but I believe there is a gradle plugin for it as well.

If you just want to install Empire in your system in order to use it in another project you can just run

./gradlew install

and it will install Empire in your local maven repository (in ~./m2/repository/com/clarkparsia/empire). Then you can import it as follows (if you're using maven):

    <dependency>

      <groupId>com.clarkparsia.empire</groupId>

      <artifactId>stardog</artifactId>

      <version>0.9.0</version>

      <scope>compile</scope>

    </dependency>

Cheers,

Fernando

[Sabino Pariente Juarez]

Hi Fernando 

Thaks for the recomendation, nevertheless, I got errors when execute the ./gradlew install command.

I attach a text file with the exceptions thows by ./gradlew install 

regards

MC. Sabino Pariente Juárez

spar...@cenidet.edu.mx

pjsa...@gmail.com

Cel: 7771347513

--

[Michael Grove]

Empire requires a Java 6 compiler.

Cheers,

Mike

[Sabino Pariente Juarez]

Thanks Mike 

I can compile the Empire successfully and I have imported the dependency from a Maven project.

However, When I execute an example to generate java code with class BeanGenerator, I got a Exception

The code is the next:

        String packageName = "beans";

        String ontologyURL = "/home/sabino/owl/ontology.owl";

        String rdfFormat = "rdf/xml";

        String outputDirectory = "src/main/java";

        URL aURL;

        if (NetUtils.isURL(ontologyURL)) {

            aURL = new URL(ontologyURL);

        } else {

            aURL = new File(ontologyURL).toURI().toURL();

        }

        //BeanGenerator bg = new BeanGenerator();

        BeanGenerator.generateSourceFiles(packageName, aURL, RDFFormat.valueOf(rdfFormat), new File(outputDirectory));

The exception thorwn is

Exception in thread "main" java.lang.NoSuchMethodError: com.complexible.common.openrdf.repository.Repositories.createInMemoryRepo()Lorg/openrdf/repository/Repository;

at com.clarkparsia.empire.codegen.BeanGenerator.generateSourceFiles(BeanGenerator.java:441)

at CodeGeneratorBeans.main(CodeGeneratorBeans.java:46)

Somebody know how to fix this exception?

Regards

MC. Sabino Pariente Juárez

spar...@cenidet.edu.mx

pjsa...@gmail.com

Cel: 7771347513

[Michael Grove]

On Mon, Apr 6, 2015 at 4:50 PM, Sabino Pariente Juarez <pjsa...@gmail.com> wrote:

Thanks Mike 

I can compile the Empire successfully and I have imported the dependency from a Maven project.

However, When I execute an example to generate java code with class BeanGenerator, I got a Exception

The code is the next:

        String packageName = "beans";

        String ontologyURL = "/home/sabino/owl/ontology.owl";

        String rdfFormat = "rdf/xml";

        String outputDirectory = "src/main/java";

        URL aURL;

        if (NetUtils.isURL(ontologyURL)) {

            aURL = new URL(ontologyURL);

        } else {

            aURL = new File(ontologyURL).toURI().toURL();

        }

        //BeanGenerator bg = new BeanGenerator();

        BeanGenerator.generateSourceFiles(packageName, aURL, RDFFormat.valueOf(rdfFormat), new File(outputDirectory));

The exception thorwn is

Exception in thread "main" java.lang.NoSuchMethodError: com.complexible.common.openrdf.repository.Repositories.createInMemoryRepo()Lorg/openrdf/repository/Repository;

at com.clarkparsia.empire.codegen.BeanGenerator.generateSourceFiles(BeanGenerator.java:441)

at CodeGeneratorBeans.main(CodeGeneratorBeans.java:46)

Looks like you have some sort of mixup in your class path.  L441 in the current codebase is a blank line.

Cheers,

Mike