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https://issues.apache.org/jira/browse/CLEREZZA-276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hasan Hasan closed CLEREZZA-276.
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Resolution: Won't Fix
> adding a language to an empty list throws an exception
> ------------------------------------------------------
>
> Key: CLEREZZA-276
> URL: https://issues.apache.org/jira/browse/CLEREZZA-276
> Project: Clerezza
> Issue Type: Bug
> Reporter: Hasan Hasan
> Priority: Major
>
> if the platform language list is empty, for example through removing existing
> ones, then an exception will be thrown (java.util.NoSuchElementException)
> when trying to add a language
> this.code in bundle activation throws the abovementioned error
> final RdfList rdfList = new RdfList(this.getLanguageListNode(),
> systemGraph);
> rdfList.remove(new UriRef(this.lingvoj + "en")); // now list is empty
> this.languageService.addLanguage(new UriRef(this.lingvoj + "de"));
> where getLanguageListNode is:
> private NonLiteral getLanguageListNode() {
> Iterator<Triple> instances = systemGraph.filter(null, RDF.type,
> PLATFORM.Instance);
> if (!instances.hasNext()) {
> throw new RuntimeException("No Platform:Instance in system
> graph.");
> }
> NonLiteral instance = instances.next().getSubject();
> Iterator<Triple> langListIter = systemGraph.filter(instance,
> PLATFORM.languages, null);
> if (langListIter.hasNext()) {
> return (NonLiteral) langListIter.next().getObject();
> }
> BNode listNode = new BNode();
> systemGraph.add(new TripleImpl(instance, PLATFORM.languages,
> listNode));
> return listNode;
> }
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