hi Andreas,
I may have the same problem last week, and I do some research and find
http://blog.sina.com.cn/s/blog_4d2d1c700100hury.html.
The page is Chinese, here is my translation. Moreover, I think what Dave
means is when you create ontology using protege, you have to save it as the
RDF/XML format.This is an example on read and write from OWL ontology to
MYSQL.I hope it would help.
public static IDBConnection connectDB(String DB_URL, String DB_USER,
String DB_PASSWD, String DB_NAME) {
return new DBConnection(DB_URL, DB_USER, DB_PASSWD, DB_NAME);
}
public static OntModel createDBModelFromFile(IDBConnection con, String name,
String filePath) {
ModelMaker maker = ModelFactory.createModelRDBMaker(con);
Model base = maker.createModel(name);
OntModel newmodel = ModelFactory.createOntologyModel(
getModelSpec(maker), base);
newmodel.read(filePath);
return newmodel;
}
public static OntModel getModelFromDB(IDBConnection con, String name) {
ModelMaker maker = ModelFactory.createModelRDBMaker(con);
Model base = maker.getModel(name);
OntModel newmodel = ModelFactory.createOntologyModel(
getModelSpec(maker), base);
return newmodel;
}
public static OntModelSpec getModelSpec(ModelMaker maker) {
OntModelSpec spec = new OntModelSpec(OntModelSpec.OWL_MEM);
spec.setImportModelMaker(maker);
return spec;
}
//Below is testing code, read from the files and then saved in the DB, and
read from DB.
public static void test() {
String DB_URL = "jdbc:mysql://localhost/expert";
String DB_USER = "root";
String DB_PASSWD = "root";
String DB = "MySQL";
String DB_DRIVER = "com.mysql.jdbc.Driver";
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
String filePath = "file:C://expert//Expert.rdf-xml.owl";
IDBConnection con = JaneUtils.connectDB(DB_URL,DB_USER, DB_PASSWD, DB);
System.out.println(con);
JaneUtils.createDBModelFromFile(con, "expert",filePath);
OntModel model = JaneUtils.getModelFromDB(con, "expert");
JaneUtils.SimpleReadOntology(model);
}
public static void SimpleReadOntology(OntModel model) {
for (Iterator i = model.listClasses(); i.hasNext();) {
OntClass c = (OntClass) i.next();
System.out.println(c.getLocalName());
}
}
source:http://blog.sina.com.cn/s/blog_4d2d1c700100hury.html
2013/4/4 Dave Reynolds <[email protected]>
> On 04/04/13 13:04, Andreas Grünwald wrote:
>
>> Thank you,
>> so as far as I understood, if I want to transform an OWL/XML ontology
>> created via the OWLAPI into Jena SDB and vice versa I have to code this by
>> myself?
>>
>
> No. I believe the OWL API, like protege, can write as well as read the
> various RDF formats including RDF/XML and Turtle.
>
> Dave
>
>
>
> On Thu, Apr 4, 2013 at 9:18 AM, Dave Reynolds <[email protected]>
>> **wrote:
>>
>> On 04/04/13 02:43, Andreas Grünwald wrote:
>>>
>>> Hello,
>>>> I am new to Jena, and I am wondering, if and how it is possible to
>>>> convert
>>>> ontologies between different formats.
>>>>
>>>> At the moment, I am leveraging Protege and the OWLAPI to store concepts,
>>>> properties and individuals in serialized OWL/XML files. I would like to
>>>> reuse the concepts (T-Box, R-Box) from these files and save them within
>>>> the
>>>> new Jena triple store (Jena SDB and MYSQL). I managed to establish a
>>>> connection to the MYSQL data store via the SDB Java API. However, now I
>>>> would like to load the ontology's meta model into the database.
>>>>
>>>> Ideally, it would be also very helpful if it is possible to serialize
>>>> the
>>>> current database entries (either classes and properties, or individuals)
>>>> into OWL/XML format and vice versa.
>>>>
>>>> Is this possible with Jena? Can you give me some hints, and code
>>>> examples?
>>>> Thank you very much,
>>>> Andreas
>>>>
>>>>
>>> Jena does not support OWL/XML. You would need to export your OWL as an
>>> RDF serialization. RDF/XML is the normative serialization for OWL though
>>> Jena handles any of the RDF formats.
>>>
>>> Dave
>>>
>>>
>>>
>>
>
