public GraphTripliser(
Queryable input,
GraphMapping graphMapping,
GraphNodeTripliserFactory graphNodeTripliserFactory,
TripliserManager tripliserManager,
QueryService queryService,
GraphTagger graphTagger)
throws InvalidGraphMappingException, IgnoredGraphMappingException {
this.input = input;
this.graphMapping = graphMapping;
this.graphNodeTripliserFactory = graphNodeTripliserFactory;
this.tripliserManager = tripliserManager;
this.graphTagger = graphTagger;
List<Node> graphNodeList = new ArrayList<Node>();
graphNodeList.add(null);
if (graphMapping.getQuery() != null) {
try {
graphNodeList =
queryService.getNodes(input, graphMapping, null, tripliserManager.getGraphContext());
} catch (QueryException e) {
throw new InvalidGraphMappingException("Invalid graph query", e);
}
if (graphNodeList.isEmpty()) {
if (graphMapping.isRequired())
throw new InvalidGraphMappingException(
"A required graph's query must return at least one result");
else
throw new IgnoredGraphMappingException(
"A non-required graph's query returned no results");
}
}
graphNodes = graphNodeList.iterator();
}
@Override
public Iterator<TripleGraph> nextNestedIterator() {
tripliserManager.next(Scope.GRAPH);
Node graphNode = graphNodes.next();
try {
graphTagger.tagGraph(
input,
tripliserManager.getTripleGraph(graphMapping, Scope.GRAPH),
graphMapping,
graphNode);
} catch (ScopeException e) {
tripliserManager
.getReporter(graphMapping, Scope.GRAPH)
.addMessage(new ReportEntry(e, Status.WARNING, Scope.GRAPH, graphMapping));
}
return tripliserManager.processNestedIterator(
graphNodeTripliserFactory.createGraphNodeTripliser(
input, graphNode, graphMapping, tripliserManager),
graphMapping,
Scope.GRAPH);
}