Examples with FacetProcessor org.apache.solr.search.facet.FacetProcessor used on opensource projects

Example 1 with FacetProcessor

use of org.apache.solr.search.facet.FacetProcessor in project lucene-solr by apache.

the class SimpleFacets method getTermCounts.

/**
   * Term counts for use in field faceting that resepcts the specified mincount - 
   * if mincount is null, the "zeros" param is consulted for the appropriate backcompat 
   * default
   *
   * @see FacetParams#FACET_ZEROS
   */
private NamedList<Integer> getTermCounts(String field, Integer mincount, ParsedParams parsed) throws IOException {
    final SolrParams params = parsed.params;
    final DocSet docs = parsed.docs;
    final int threads = parsed.threads;
    int offset = params.getFieldInt(field, FacetParams.FACET_OFFSET, 0);
    int limit = params.getFieldInt(field, FacetParams.FACET_LIMIT, 100);
    if (limit == 0)
        return new NamedList<>();
    if (mincount == null) {
        Boolean zeros = params.getFieldBool(field, FacetParams.FACET_ZEROS);
        // mincount = (zeros!=null && zeros) ? 0 : 1;
        mincount = (zeros != null && !zeros) ? 1 : 0;
    // current default is to include zeros.
    }
    boolean missing = params.getFieldBool(field, FacetParams.FACET_MISSING, false);
    // default to sorting if there is a limit.
    String sort = params.getFieldParam(field, FacetParams.FACET_SORT, limit > 0 ? FacetParams.FACET_SORT_COUNT : FacetParams.FACET_SORT_INDEX);
    String prefix = params.getFieldParam(field, FacetParams.FACET_PREFIX);
    final Predicate<BytesRef> termFilter = newBytesRefFilter(field, params);
    boolean exists = params.getFieldBool(field, FacetParams.FACET_EXISTS, false);
    NamedList<Integer> counts;
    SchemaField sf = searcher.getSchema().getField(field);
    if (sf.getType().isPointField() && !sf.hasDocValues()) {
        throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Can't facet on a PointField without docValues");
    }
    FieldType ft = sf.getType();
    // determine what type of faceting method to use
    final String methodStr = params.getFieldParam(field, FacetParams.FACET_METHOD);
    final FacetMethod requestedMethod;
    if (FacetParams.FACET_METHOD_enum.equals(methodStr)) {
        requestedMethod = FacetMethod.ENUM;
    } else if (FacetParams.FACET_METHOD_fcs.equals(methodStr)) {
        requestedMethod = FacetMethod.FCS;
    } else if (FacetParams.FACET_METHOD_fc.equals(methodStr)) {
        requestedMethod = FacetMethod.FC;
    } else if (FacetParams.FACET_METHOD_uif.equals(methodStr)) {
        requestedMethod = FacetMethod.UIF;
    } else {
        requestedMethod = null;
    }
    final boolean multiToken = sf.multiValued() || ft.multiValuedFieldCache();
    FacetMethod appliedFacetMethod = selectFacetMethod(field, sf, requestedMethod, mincount, exists);
    RTimer timer = null;
    if (fdebug != null) {
        fdebug.putInfoItem("requestedMethod", requestedMethod == null ? "not specified" : requestedMethod.name());
        fdebug.putInfoItem("appliedMethod", appliedFacetMethod.name());
        fdebug.putInfoItem("inputDocSetSize", docs.size());
        fdebug.putInfoItem("field", field);
        timer = new RTimer();
    }
    if (params.getFieldBool(field, GroupParams.GROUP_FACET, false)) {
        counts = getGroupedCounts(searcher, docs, field, multiToken, offset, limit, mincount, missing, sort, prefix, termFilter);
    } else {
        assert appliedFacetMethod != null;
        switch(appliedFacetMethod) {
            case ENUM:
                assert TrieField.getMainValuePrefix(ft) == null;
                counts = getFacetTermEnumCounts(searcher, docs, field, offset, limit, mincount, missing, sort, prefix, termFilter, exists);
                break;
            case FCS:
                assert ft.isPointField() || !multiToken;
                if (ft.isPointField() || (ft.getNumberType() != null && !sf.multiValued())) {
                    if (prefix != null) {
                        throw new SolrException(ErrorCode.BAD_REQUEST, FacetParams.FACET_PREFIX + " is not supported on numeric types");
                    }
                    if (termFilter != null) {
                        throw new SolrException(ErrorCode.BAD_REQUEST, "BytesRef term filters (" + FacetParams.FACET_CONTAINS + ", " + FacetParams.FACET_EXCLUDETERMS + ") are not supported on numeric types");
                    }
                    //            We should do this, but mincount=0 is currently the default
                    //            if (ft.isPointField() && mincount <= 0) {
                    //              throw new SolrException(ErrorCode.BAD_REQUEST, FacetParams.FACET_MINCOUNT + " <= 0 is not supported on point types");
                    //            }
                    counts = NumericFacets.getCounts(searcher, docs, field, offset, limit, mincount, missing, sort);
                } else {
                    PerSegmentSingleValuedFaceting ps = new PerSegmentSingleValuedFaceting(searcher, docs, field, offset, limit, mincount, missing, sort, prefix, termFilter);
                    Executor executor = threads == 0 ? directExecutor : facetExecutor;
                    ps.setNumThreads(threads);
                    counts = ps.getFacetCounts(executor);
                }
                break;
            case UIF:
                //Emulate the JSON Faceting structure so we can use the same parsing classes
                Map<String, Object> jsonFacet = new HashMap<>(13);
                jsonFacet.put("type", "terms");
                jsonFacet.put("field", field);
                jsonFacet.put("offset", offset);
                jsonFacet.put("limit", limit);
                jsonFacet.put("mincount", mincount);
                jsonFacet.put("missing", missing);
                jsonFacet.put("prefix", prefix);
                jsonFacet.put("numBuckets", params.getFieldBool(field, "numBuckets", false));
                jsonFacet.put("allBuckets", params.getFieldBool(field, "allBuckets", false));
                jsonFacet.put("method", "uif");
                jsonFacet.put("cacheDf", 0);
                jsonFacet.put("perSeg", false);
                final String sortVal;
                switch(sort) {
                    case FacetParams.FACET_SORT_COUNT_LEGACY:
                        sortVal = FacetParams.FACET_SORT_COUNT;
                        break;
                    case FacetParams.FACET_SORT_INDEX_LEGACY:
                        sortVal = FacetParams.FACET_SORT_INDEX;
                        break;
                    default:
                        sortVal = sort;
                }
                jsonFacet.put(SORT, sortVal);
                Map<String, Object> topLevel = new HashMap<>();
                topLevel.put(field, jsonFacet);
                topLevel.put("processEmpty", true);
                FacetProcessor fproc = // rb.getResults().docSet
                FacetProcessor.createProcessor(// rb.getResults().docSet
                rb.req, // rb.getResults().docSet
                topLevel, docs);
                //TODO do we handle debug?  Should probably already be handled by the legacy code
                fproc.process();
                //Go through the response to build the expected output for SimpleFacets
                Object res = fproc.getResponse();
                counts = new NamedList<Integer>();
                if (res != null) {
                    SimpleOrderedMap<Object> som = (SimpleOrderedMap<Object>) res;
                    SimpleOrderedMap<Object> asdf = (SimpleOrderedMap<Object>) som.get(field);
                    List<SimpleOrderedMap<Object>> buckets = (List<SimpleOrderedMap<Object>>) asdf.get("buckets");
                    for (SimpleOrderedMap<Object> b : buckets) {
                        counts.add(b.get("val").toString(), (Integer) b.get("count"));
                    }
                    if (missing) {
                        SimpleOrderedMap<Object> missingCounts = (SimpleOrderedMap<Object>) asdf.get("missing");
                        counts.add(null, (Integer) missingCounts.get("count"));
                    }
                }
                break;
            case FC:
                counts = DocValuesFacets.getCounts(searcher, docs, field, offset, limit, mincount, missing, sort, prefix, termFilter, fdebug);
                break;
            default:
                throw new AssertionError();
        }
    }
    if (fdebug != null) {
        long timeElapsed = (long) timer.getTime();
        fdebug.setElapse(timeElapsed);
    }
    return counts;
}