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();
}
public void provideNamesForUnamedMappings(Mapping mapping) throws TripliserException {
Set<String> usedNames = new HashSet<String>();
List<GraphMapping> graphMappings = mapping.getGraphMappings();
for (GraphMapping graphMapping : graphMappings) {
if (graphMapping.getName() == null) {
graphMapping.setName(createNewGraphName("graph", usedNames));
} else {
usedNames.add(graphMapping.getName());
}
List<ResourceMapping> resourceMappings = graphMapping.getResourceMappings();
for (ResourceMapping resourceMapping : resourceMappings) {
if (resourceMapping.getName() == null) {
resourceMapping.setName(createNewResourceName("resource", usedNames));
} else {
usedNames.add(resourceMapping.getName());
}
}
}
}