Examples with SuggestBuilder org.graylog.shaded.elasticsearch6.org.elasticsearch.search.suggest.SuggestBuilder used on opensource projects

Example 6 with SuggestBuilder

use of org.graylog.shaded.elasticsearch6.org.elasticsearch.search.suggest.SuggestBuilder in project graylog2-server by Graylog2.

the class QuerySuggestionsES6 method suggest.

@Override
public SuggestionResponse suggest(SuggestionRequest req) {
    final Set<String> affectedIndices = indexLookup.indexNamesForStreamsInTimeRange(req.streams(), req.timerange());
    final SearchSourceBuilder search = new SearchSourceBuilder().query(QueryBuilders.prefixQuery(req.field(), req.input())).size(0).aggregation(AggregationBuilders.terms("fieldvalues").field(req.field()).size(req.size())).suggest(new SuggestBuilder().addSuggestion("corrections", SuggestBuilders.termSuggestion(req.field()).text(req.input()).size(req.size())));
    final Search.Builder searchBuilder = new Search.Builder(search.toString()).addType(IndexMapping.TYPE_MESSAGE).addIndex(affectedIndices.isEmpty() ? Collections.singleton("") : affectedIndices).allowNoIndices(false).ignoreUnavailable(false);
    try {
        final SearchResult result = JestUtils.execute(jestClient, searchBuilder.build(), () -> "Unable to perform aggregation: ");
        final TermsAggregation aggregation = result.getAggregations().getTermsAggregation("fieldvalues");
        final List<SuggestionEntry> entries = aggregation.getBuckets().stream().map(b -> new SuggestionEntry(b.getKeyAsString(), b.getCount())).collect(Collectors.toList());
        if (!entries.isEmpty()) {
            return SuggestionResponse.forSuggestions(req.field(), req.input(), entries, aggregation.getSumOtherDocCount());
        } else {
            final List<SuggestionEntry> corrections = Optional.of(result.getJsonObject()).map(o -> o.get("suggest")).map(o -> o.get("corrections")).map(o -> o.get(0)).map(o -> o.get("options")).map(options -> StreamSupport.stream(Spliterators.spliteratorUnknownSize(options.elements(), Spliterator.ORDERED), false).map(option -> new SuggestionEntry(option.get("text").textValue(), option.get("freq").longValue())).collect(Collectors.toList())).orElseGet(Collections::emptyList);
            return SuggestionResponse.forSuggestions(req.field(), req.input(), corrections, null);
        }
    } catch (Exception e) {
        final SuggestionError err = SuggestionError.create(e.getClass().getSimpleName(), e.getMessage());
        return SuggestionResponse.forError(req.field(), req.input(), err);
    }
}