> Which programming language is this? Kotlin.
"companyIds.head" is equivalent to "companyIds.getHead()". > Does your code compile? I'm asking because there is just a getHead() > method on an RDFList object. And this one returns an RDFNode object, > thus, remove should be impossible here. It does compile, but I haven't tested it manually yet. Could you point me to an analog of org.apache.jena.rdf.model.Statement#changeLiteralObject(...) for lists? Dmitri 16.03.2017, 12:18, "Lorenz B." <[email protected]>: >> Hello! >> >> I have an application, which creates an individual called batch. A batch >> has a list of company IDs (strings). Add the property like this: >> >> open fun addCompanyIdsList( >> batch: Resource, >> companyIds: List<String>, >> model: Model) { >> val prop = model.createProperty(Bp2BatchCompanyIds) >> val list = model.createList() >> companyIds >> .filter { it.isNumeric() } >> .map { it.toInt() } >> .map { id -> model.createTypedLiteral(id) } >> .forEach { literal -> list.add(literal) } >> batch.addProperty(prop, list) >> } >> >> In another operation I want to remove the first element of the list so that >> this change is saved in Jena. For primitive data types like integers, there >> is the method >> >> org.apache.jena.rdf.model.Statement#changeLiteralObject(boolean) >> >> and its analogs. >> >> How do I change the list? Is it sufficient to just remove an element from >> the list like in the code snippet below? >> >> ds.begin(ReadWrite.WRITE) >> val query = createQuery("""SELECT ?x >> WHERE { ?x $Bp2BatchNumber >> $batchId }""") >> val qexec = createQueryExecution(ds, query) >> val rs = qexec.execSelect() >> val sol = rs.nextSolution() >> val rec = sol["x"] >> val prop = findStatement(Bp2BatchCompanyIds, rec as Resource) >> val companyIds = prop.`object` as RDFList >> val head = companyIds.head >> companyIds.remove(result) >> ds.end() > > Which programming language is this? > Does your code compile? I'm asking because there is just a getHead() > method on an RDFList object. And this one returns an RDFNode object, > thus, remove should be impossible here. >> Thanks in advance >> >> Dmitri Pisarenko > -- > Lorenz Bühmann > AKSW group, University of Leipzig > Group: http://aksw.org - semantic web research center
