Hi all, I encounter a strange QueryParseException when building my UpdateRequest to add a named model remotely from my Java client application.
I've progressed since my last question regarding inserts to a remote repository [1]. Thanks again Andy and Claude for your kind suggestions. Among other, I've understood that data insert calls should be directed at "http://[servername]/rdf4j-server/repositories/[repo_name]/statements";. I've learned that a model should be serialized in NQUADS format into the request and that TURTLE does not work. Based on this, calling the server works well for dropping graphs and for inserting _unnamed_ models. However, I am unable to insert data for a _named_ model/graph remotely. My approach - which fails when adding the serialized model to the UpdateRequest - is as follows. ... // prepare the model we would like to load Model model = prepareModel(..); // create a dataset and add the model to it with a proper context Dataset dataset = dataset = DatasetFactory.create(); dataset.addNamedModel(modelNameUri, model); // serialise the dataset to an outputStream in NQUADS format RDFDataMgr.write(outputStream, dataset, RDFFormat.NQUADS); // build the full request by adding the prefix, the outputStream and the suffix String insertDataRequest = "INSERT DATA { " + outputStream.toString() + "}"; UpdateRequest updateRequest = UpdateFactory.create(insertDataRequest); // create the processor and fire off the request UpdateProcessor updateProcessor = UpdateExecutionFactory.createRemoteForm(updateRequest, postUrl); updateProcessor.execute(); ... This code fails down in the UpdateFactory where a QueryParseException is thrown that tells that the fourth element (which is the model name / modelNameUri) is not expected. Strange thing is that the serialized NQUADS look ok. When using an alternative approach and trying to build an request with an UpdateBuilder (as Claude suggested), I don't see how I can set the model name/uri for the model. It should be possible to add this either at creation or afterwards (rather than with every added triple), I presume…? What is the recommended approach to add a named model...? Are there perhaps any examples...? Much appreciated. Best, Mark [1] - https://jena.markmail.org/message/oxf5ff4bus67iim4
