private QueryIterator variableSubject( Binding binding, Node s, Node score, Node literal, StrMatch match, ExecutionContext execCxt) { ListMultimap<String, TextHit> results = query(match.getProperty(), match.getQueryString(), match.getLimit(), execCxt); Collection<TextHit> r = results.values(); return resultsToQueryIterator(binding, s, score, literal, r, execCxt); }
private ListMultimap<String, TextHit> query( Node property, String queryString, int limit, ExecutionContext execCxt) { // use the graph information in the text index if possible if (textIndex.getDocDef().getGraphField() != null && execCxt.getActiveGraph() instanceof GraphView) { GraphView activeGraph = (GraphView) execCxt.getActiveGraph(); if (!Quad.isUnionGraph(activeGraph.getGraphName())) { String uri = activeGraph.getGraphName() != null ? TextQueryFuncs.graphNodeToString(activeGraph.getGraphName()) : Quad.defaultGraphNodeGenerated.getURI(); String escaped = QueryParserBase.escape(uri); String qs2 = textIndex.getDocDef().getGraphField() + ":" + escaped; queryString = "(" + queryString + ") AND " + qs2; } } // for language-based search extension if (textIndex.getDocDef().getLangField() != null) { String field = textIndex.getDocDef().getLangField(); if (langArg != null) { String qs2 = !"none".equals(langArg) ? field + ":" + langArg : "-" + field + ":*"; queryString = "(" + queryString + ") AND " + qs2; } } Explain.explain(execCxt.getContext(), "Text query: " + queryString); if (log.isDebugEnabled()) log.debug("Text query: {} ({})", queryString, limit); String cacheKey = limit + " " + property + " " + queryString; Cache<String, ListMultimap<String, TextHit>> queryCache = (Cache<String, ListMultimap<String, TextHit>>) execCxt.getContext().get(cacheSymbol); if (queryCache == null) { /* doesn't yet exist, need to create it */ queryCache = CacheFactory.createCache(CACHE_SIZE); execCxt.getContext().put(cacheSymbol, queryCache); } final String queryStr = queryString; // final needed for the lambda function ListMultimap<String, TextHit> results = queryCache.getOrFill( cacheKey, () -> { List<TextHit> resultList = textIndex.query(property, queryStr, limit); ListMultimap<String, TextHit> resultMultimap = LinkedListMultimap.create(); for (TextHit result : resultList) { resultMultimap.put(result.getNode().getURI(), result); } return resultMultimap; }); return results; }
private QueryIterator concreteSubject( Binding binding, Node s, Node score, Node literal, StrMatch match, ExecutionContext execCxt) { if (!s.isURI()) { log.warn("Subject not a URI: " + s); return IterLib.noResults(execCxt); } String qs = match.getQueryString(); ListMultimap<String, TextHit> x = query(match.getProperty(), match.getQueryString(), -1, execCxt); if (x == null) // null return value - empty result return IterLib.noResults(execCxt); List<TextHit> r = x.get(s.getURI()); return resultsToQueryIterator(binding, s, score, literal, r, execCxt); }