List of usage examples for org.apache.solr.common.util NamedList clear
public void clear()
From source file:de.uni_tuebingen.ub.ixTheo.handler.component.FacetPrefixSortComponent.java
License:Apache License
/** * Actually run the query/*from w w w. j a v a2 s .c o m*/ */ @Override public void process(ResponseBuilder rb) throws IOException { if (rb.doFacets) { final ModifiableSolrParams params = new ModifiableSolrParams(); final SolrParams origParams = rb.req.getParams(); final Iterator<String> iter = origParams.getParameterNamesIterator(); setCollator(origParams.get("lang")); while (iter.hasNext()) { final String paramName = iter.next(); // Deduplicate the list with LinkedHashSet, but _only_ for facet // params. if (!paramName.startsWith(FacetParams.FACET)) { params.add(paramName, origParams.getParams(paramName)); continue; } final HashSet<String> deDupe = new LinkedHashSet<>(Arrays.asList(origParams.getParams(paramName))); params.add(paramName, deDupe.toArray(new String[deDupe.size()])); } final SimplePrefixSortFacets facets = new SimplePrefixSortFacets(rb.req, rb.getResults().docSet, params, rb); final NamedList<Object> counts = org.apache.solr.handler.component.FacetComponent .getFacetCounts(facets); final String[] pivots = params.getParams(FacetParams.FACET_PIVOT); if (pivots != null && pivots.length > 0) { PivotFacetProcessor pivotProcessor = new PivotFacetProcessor(rb.req, rb.getResults().docSet, params, rb); SimpleOrderedMap<List<NamedList<Object>>> v = pivotProcessor.process(pivots); if (v != null) { counts.add(PIVOT_KEY, v); } } // Check whether we have to reorder out results // according to prefix final String sort = params.get(FacetParams.FACET_SORT); if (FacetPrefixSortParams.FACET_SORT_PREFIX.equals(sort)) { // Determine a score relative to the original query // Determine the query and make it compatible with our metric // class // by splitting the single terms String[] queryTerms = params.getParams(CommonParams.Q); final Collection<String> queryTermsCollection = new ArrayList<>(); for (String s : queryTerms) { // Split at whitespace except we have a quoted term Matcher matcher = WHITE_SPACES_WITH_QUOTES_SPLITTING_PATTERN.matcher(s); while (matcher.find()) { queryTermsCollection.add(matcher.group().replaceAll("^\"|\"$", "")); } } // In some contexts, i.e. in KWC that are derived from ordinary // keywords or if // wildcards occur, also add all the query terms as a single // phrase term // with stripped wildcards StringBuilder sb = new StringBuilder(); for (String s : queryTermsCollection) { s = s.replace("*", ""); sb.append(s); sb.append(" "); } queryTermsCollection.add(sb.toString().trim()); final ArrayList<String> queryList = new ArrayList<>(queryTermsCollection); final String facetfield = params.get(FacetParams.FACET_FIELD); // Get the current facet entry and make it compatible with our // metric class // "facet_fields" itself contains a NamedList with the // facet.field as key final NamedList<Object> facetFieldsNamedList = (NamedList<Object>) counts.get("facet_fields"); final NamedList<Object> facetFields = (NamedList<Object>) facetFieldsNamedList.get(facetfield); final List<Entry<Entry<String, Object>, Double>> facetPrefixListScored = new ArrayList<>(); for (final Entry<String, Object> entry : facetFields) { final String facetTerms = entry.getKey(); // Split up each KWC and calculate the scoring ArrayList<String> facetList = new ArrayList<>( Arrays.asList(facetTerms.split("(?<!" + Pattern.quote("\\") + ")/"))); // For usability reasons sort the result facets according to // the order of the search facetList = KeywordSort.sortToReferenceChain(queryList, facetList); final double score = KeywordChainMetric.calculateSimilarityScore(queryList, facetList); // Collect the result in a sorted list and throw away // garbage if (score > 0) { String facetTermsSorted = StringUtils.join(facetList, "/"); Map.Entry<String, Object> sortedEntry = new AbstractMap.SimpleEntry<>(facetTermsSorted, entry.getValue()); facetPrefixListScored.add(new AbstractMap.SimpleEntry<>(sortedEntry, score)); } } Collections.sort(facetPrefixListScored, ENTRY_COMPARATOR); // Extract all the values wrap it back to NamedList again and // replace in the original structure facetFieldsNamedList.clear(); NamedList<Object> facetNamedListSorted = new NamedList<>(); // We had to disable all limits and offsets sort according // Handle this accordingly now int offset = (params.getInt(FacetParams.FACET_OFFSET) != null) ? params.getInt(FacetParams.FACET_OFFSET) : 0; int limit = (params.getInt(FacetParams.FACET_LIMIT) != null) ? params.getInt(FacetParams.FACET_LIMIT) : 100; // Strip uneeded elements int s = facetPrefixListScored.size(); int off = (offset < s) ? offset : 0; limit = (limit < 0) ? s : limit; // Handle a negative limit // param, i.e. unlimited results int lim = (offset + limit <= s) ? (offset + limit) : s; final List<Entry<Entry<String, Object>, Double>> facetPrefixListScoredTruncated = facetPrefixListScored .subList(off, lim); for (Entry<Entry<String, Object>, Double> e : facetPrefixListScoredTruncated) { facetNamedListSorted.add(e.getKey().getKey(), e.getKey().getValue()); } facetFieldsNamedList.add(facetfield, facetNamedListSorted); NamedList<Object> countList = new NamedList<>(); countList.add("count", facetPrefixListScored.size()); facetFieldsNamedList.add(facetfield + "-count", countList); counts.remove("facet_fields"); counts.add("facet_fields", facetFieldsNamedList); } rb.rsp.add("facet_counts", counts); } }